Merge branch 'develop' into HEAD

.github/nightly-version

@@ -1 +1 @@
-nightly-2024-05-01
+nightly-2024-06-01

Cargo.toml

@@ -2,6 +2,8 @@
 resolver = "2"
 members = [
   # Version patches
+  "patches/parking_lot_core",
+  "patches/parking_lot",
   "patches/zstd",
   "patches/rocksdb",
   "patches/proc-macro-crate",
@@ -36,8 +38,11 @@ members = [
   "crypto/schnorrkel",
 
   "coins/bitcoin",
+
   "coins/ethereum/alloy-simple-request-transport",
   "coins/ethereum",
+  "coins/ethereum/relayer",
+
   "coins/monero/generators",
   "coins/monero",
 
@@ -112,6 +117,8 @@ lazy_static = { git = "https://github.com/rust-lang-nursery/lazy-static.rs", rev
 # Needed due to dockertest's usage of `Rc`s when we need `Arc`s
 dockertest = { git = "https://github.com/orcalabs/dockertest-rs", rev = "4dd6ae24738aa6dc5c89444cc822ea4745517493" }
 
+parking_lot_core = { path = "patches/parking_lot_core" }
+parking_lot = { path = "patches/parking_lot" }
 # wasmtime pulls in an old version for this
 zstd = { path = "patches/zstd" }
 # Needed for WAL compression

coins/bitcoin/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/coins/bitcoin"
 authors = ["Luke Parker <lukeparker5132@gmail.com>", "Vrx <vrx00@proton.me>"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true
@@ -23,7 +23,7 @@ thiserror = { version = "1", default-features = false, optional = true }
 zeroize = { version = "^1.5", default-features = false }
 rand_core = { version = "0.6", default-features = false }
 
-bitcoin = { version = "0.31", default-features = false, features = ["no-std"] }
+bitcoin = { version = "0.32", default-features = false }
 
 k256 = { version = "^0.13.1", default-features = false, features = ["arithmetic", "bits"] }
 
@@ -36,7 +36,7 @@ serde_json = { version = "1", default-features = false, optional = true }
 simple-request = { path = "../../common/request", version = "0.1", default-features = false, features = ["tls", "basic-auth"], optional = true }
 
 [dev-dependencies]
-secp256k1 = { version = "0.28", default-features = false, features = ["std"] }
+secp256k1 = { version = "0.29", default-features = false, features = ["std"] }
 
 frost = { package = "modular-frost", path = "../../crypto/frost", features = ["tests"] }
 

coins/bitcoin/src/rpc.rs

@@ -195,13 +195,13 @@ impl Rpc {
         // If this was already successfully published, consider this having succeeded
         if let RpcError::RequestError(Error { code, .. }) = e {
           if code == RPC_VERIFY_ALREADY_IN_CHAIN {
-            return Ok(tx.txid());
+            return Ok(tx.compute_txid());
           }
         }
         Err(e)?
       }
     };
-    if txid != tx.txid() {
+    if txid != tx.compute_txid() {
       Err(RpcError::InvalidResponse("returned TX ID inequals calculated TX ID"))?;
     }
     Ok(txid)
@@ -215,7 +215,7 @@ impl Rpc {
     let tx: Transaction = encode::deserialize(&bytes)
       .map_err(|_| RpcError::InvalidResponse("node sent an improperly serialized transaction"))?;
 
-    let mut tx_hash = *tx.txid().as_raw_hash().as_byte_array();
+    let mut tx_hash = *tx.compute_txid().as_raw_hash().as_byte_array();
     tx_hash.reverse();
     if hash != &tx_hash {
       Err(RpcError::InvalidResponse("node replied with a different transaction"))?;

coins/bitcoin/src/tests/crypto.rs

@@ -39,7 +39,7 @@ fn test_algorithm() {
     .verify_schnorr(
       &Signature::from_slice(&sig)
         .expect("couldn't convert produced signature to secp256k1::Signature"),
-      &Message::from(Hash::hash(MESSAGE)),
+      &Message::from_digest_slice(Hash::hash(MESSAGE).as_ref()).unwrap(),
       &x_only(&keys[&Participant::new(1).unwrap()].group_key()),
     )
     .unwrap()

coins/bitcoin/src/wallet/mod.rs

@@ -4,7 +4,7 @@ use std_shims::{
   io::{self, Write},
 };
 #[cfg(feature = "std")]
-use std_shims::io::Read;
+use std::io::{Read, BufReader};
 
 use k256::{
   elliptic_curve::sec1::{Tag, ToEncodedPoint},
@@ -18,8 +18,8 @@ use frost::{
 };
 
 use bitcoin::{
-  consensus::encode::serialize, key::TweakedPublicKey, address::Payload, OutPoint, ScriptBuf,
+  consensus::encode::serialize, key::TweakedPublicKey, OutPoint, ScriptBuf, TxOut, Transaction,
-  TxOut, Transaction, Block,
+  Block,
 };
 #[cfg(feature = "std")]
 use bitcoin::consensus::encode::Decodable;
@@ -46,12 +46,12 @@ pub fn tweak_keys(keys: &ThresholdKeys<Secp256k1>) -> ThresholdKeys<Secp256k1> {
 /// Return the Taproot address payload for a public key.
 ///
 /// If the key is odd, this will return None.
-pub fn address_payload(key: ProjectivePoint) -> Option<Payload> {
+pub fn p2tr_script_buf(key: ProjectivePoint) -> Option<ScriptBuf> {
   if key.to_encoded_point(true).tag() != Tag::CompressedEvenY {
     return None;
   }
 
-  Some(Payload::p2tr_tweaked(TweakedPublicKey::dangerous_assume_tweaked(x_only(&key))))
+  Some(ScriptBuf::new_p2tr_tweaked(TweakedPublicKey::dangerous_assume_tweaked(x_only(&key))))
 }
 
 /// A spendable output.
@@ -89,11 +89,17 @@ impl ReceivedOutput {
   /// Read a ReceivedOutput from a generic satisfying Read.
   #[cfg(feature = "std")]
   pub fn read<R: Read>(r: &mut R) -> io::Result<ReceivedOutput> {
-    Ok(ReceivedOutput {
+    let offset = Secp256k1::read_F(r)?;
-      offset: Secp256k1::read_F(r)?,
+    let output;
-      output: TxOut::consensus_decode(r).map_err(|_| io::Error::other("invalid TxOut"))?,
+    let outpoint;
-      outpoint: OutPoint::consensus_decode(r).map_err(|_| io::Error::other("invalid OutPoint"))?,
+    {
-    })
+      let mut buf_r = BufReader::with_capacity(0, r);
+      output =
+        TxOut::consensus_decode(&mut buf_r).map_err(|_| io::Error::other("invalid TxOut"))?;
+      outpoint =
+        OutPoint::consensus_decode(&mut buf_r).map_err(|_| io::Error::other("invalid OutPoint"))?;
+    }
+    Ok(ReceivedOutput { offset, output, outpoint })
   }
 
   /// Write a ReceivedOutput to a generic satisfying Write.
@@ -124,7 +130,7 @@ impl Scanner {
   /// Returns None if this key can't be scanned for.
   pub fn new(key: ProjectivePoint) -> Option<Scanner> {
     let mut scripts = HashMap::new();
-    scripts.insert(address_payload(key)?.script_pubkey(), Scalar::ZERO);
+    scripts.insert(p2tr_script_buf(key)?, Scalar::ZERO);
     Some(Scanner { key, scripts })
   }
 
@@ -141,9 +147,8 @@ impl Scanner {
     // chance of being even
     // That means this should terminate within a very small amount of iterations
     loop {
-      match address_payload(self.key + (ProjectivePoint::GENERATOR * offset)) {
+      match p2tr_script_buf(self.key + (ProjectivePoint::GENERATOR * offset)) {
-        Some(address) => {
+        Some(script) => {
-          let script = address.script_pubkey();
           if self.scripts.contains_key(&script) {
             None?;
           }
@@ -166,7 +171,7 @@ impl Scanner {
         res.push(ReceivedOutput {
           offset: *offset,
           output: output.clone(),
-          outpoint: OutPoint::new(tx.txid(), vout),
+          outpoint: OutPoint::new(tx.compute_txid(), vout),
         });
       }
     }

coins/bitcoin/src/wallet/send.rs

@@ -18,12 +18,12 @@ use bitcoin::{
   absolute::LockTime,
   script::{PushBytesBuf, ScriptBuf},
   transaction::{Version, Transaction},
-  OutPoint, Sequence, Witness, TxIn, Amount, TxOut, Address,
+  OutPoint, Sequence, Witness, TxIn, Amount, TxOut,
 };
 
 use crate::{
   crypto::Schnorr,
-  wallet::{ReceivedOutput, address_payload},
+  wallet::{ReceivedOutput, p2tr_script_buf},
 };
 
 #[rustfmt::skip]
@@ -61,7 +61,11 @@ pub struct SignableTransaction {
 }
 
 impl SignableTransaction {
-  fn calculate_weight(inputs: usize, payments: &[(Address, u64)], change: Option<&Address>) -> u64 {
+  fn calculate_weight(
+    inputs: usize,
+    payments: &[(ScriptBuf, u64)],
+    change: Option<&ScriptBuf>,
+  ) -> u64 {
     // Expand this a full transaction in order to use the bitcoin library's weight function
     let mut tx = Transaction {
       version: Version(2),
@@ -86,14 +90,14 @@ impl SignableTransaction {
         // The script pub key is not of a fixed size and does have to be used here
         .map(|payment| TxOut {
           value: Amount::from_sat(payment.1),
-          script_pubkey: payment.0.script_pubkey(),
+          script_pubkey: payment.0.clone(),
         })
         .collect(),
     };
     if let Some(change) = change {
       // Use a 0 value since we're currently unsure what the change amount will be, and since
       // the value is fixed size (so any value could be used here)
-      tx.output.push(TxOut { value: Amount::ZERO, script_pubkey: change.script_pubkey() });
+      tx.output.push(TxOut { value: Amount::ZERO, script_pubkey: change.clone() });
     }
     u64::from(tx.weight())
   }
@@ -121,8 +125,8 @@ impl SignableTransaction {
   /// If data is specified, an OP_RETURN output will be added with it.
   pub fn new(
     mut inputs: Vec<ReceivedOutput>,
-    payments: &[(Address, u64)],
+    payments: &[(ScriptBuf, u64)],
-    change: Option<&Address>,
+    change: Option<ScriptBuf>,
     data: Option<Vec<u8>>,
     fee_per_weight: u64,
   ) -> Result<SignableTransaction, TransactionError> {
@@ -159,10 +163,7 @@ impl SignableTransaction {
     let payment_sat = payments.iter().map(|payment| payment.1).sum::<u64>();
     let mut tx_outs = payments
       .iter()
-      .map(|payment| TxOut {
+      .map(|payment| TxOut { value: Amount::from_sat(payment.1), script_pubkey: payment.0.clone() })
-        value: Amount::from_sat(payment.1),
-        script_pubkey: payment.0.script_pubkey(),
-      })
       .collect::<Vec<_>>();
 
     // Add the OP_RETURN output
@@ -213,12 +214,11 @@ impl SignableTransaction {
 
     // If there's a change address, check if there's change to give it
     if let Some(change) = change {
-      let weight_with_change = Self::calculate_weight(tx_ins.len(), payments, Some(change));
+      let weight_with_change = Self::calculate_weight(tx_ins.len(), payments, Some(&change));
       let fee_with_change = fee_per_weight * weight_with_change;
       if let Some(value) = input_sat.checked_sub(payment_sat + fee_with_change) {
         if value >= DUST {
-          tx_outs
+          tx_outs.push(TxOut { value: Amount::from_sat(value), script_pubkey: change });
-            .push(TxOut { value: Amount::from_sat(value), script_pubkey: change.script_pubkey() });
           weight = weight_with_change;
           needed_fee = fee_with_change;
         }
@@ -248,7 +248,7 @@ impl SignableTransaction {
 
   /// Returns the TX ID of the transaction this will create.
   pub fn txid(&self) -> [u8; 32] {
-    let mut res = self.tx.txid().to_byte_array();
+    let mut res = self.tx.compute_txid().to_byte_array();
     res.reverse();
     res
   }
@@ -288,7 +288,7 @@ impl SignableTransaction {
       transcript.append_message(b"signing_input", u32::try_from(i).unwrap().to_le_bytes());
 
       let offset = keys.clone().offset(self.offsets[i]);
-      if address_payload(offset.group_key())?.script_pubkey() != self.prevouts[i].script_pubkey {
+      if p2tr_script_buf(offset.group_key())? != self.prevouts[i].script_pubkey {
         None?;
       }
 

coins/bitcoin/tests/wallet.rs

@@ -22,11 +22,10 @@ use bitcoin_serai::{
     hashes::Hash as HashTrait,
     blockdata::opcodes::all::OP_RETURN,
     script::{PushBytesBuf, Instruction, Instructions, Script},
-    address::NetworkChecked,
     OutPoint, Amount, TxOut, Transaction, Network, Address,
   },
   wallet::{
-    tweak_keys, address_payload, ReceivedOutput, Scanner, TransactionError, SignableTransaction,
+    tweak_keys, p2tr_script_buf, ReceivedOutput, Scanner, TransactionError, SignableTransaction,
   },
   rpc::Rpc,
 };
@@ -48,7 +47,7 @@ async fn send_and_get_output(rpc: &Rpc, scanner: &Scanner, key: ProjectivePoint)
       "generatetoaddress",
       serde_json::json!([
         1,
-        Address::<NetworkChecked>::new(Network::Regtest, address_payload(key).unwrap())
+        Address::from_script(&p2tr_script_buf(key).unwrap(), Network::Regtest).unwrap()
       ]),
     )
     .await
@@ -69,7 +68,7 @@ async fn send_and_get_output(rpc: &Rpc, scanner: &Scanner, key: ProjectivePoint)
   assert_eq!(outputs, scanner.scan_transaction(&block.txdata[0]));
 
   assert_eq!(outputs.len(), 1);
-  assert_eq!(outputs[0].outpoint(), &OutPoint::new(block.txdata[0].txid(), 0));
+  assert_eq!(outputs[0].outpoint(), &OutPoint::new(block.txdata[0].compute_txid(), 0));
   assert_eq!(outputs[0].value(), block.txdata[0].output[0].value.to_sat());
 
   assert_eq!(
@@ -193,7 +192,7 @@ async_sequential! {
     assert_eq!(output.offset(), Scalar::ZERO);
 
     let inputs = vec![output];
-    let addr = || Address::<NetworkChecked>::new(Network::Regtest, address_payload(key).unwrap());
+    let addr = || p2tr_script_buf(key).unwrap();
     let payments = vec![(addr(), 1000)];
 
     assert!(SignableTransaction::new(inputs.clone(), &payments, None, None, FEE).is_ok());
@@ -206,7 +205,7 @@ async_sequential! {
     // No change
     assert!(SignableTransaction::new(inputs.clone(), &[(addr(), 1000)], None, None, FEE).is_ok());
     // Consolidation TX
-    assert!(SignableTransaction::new(inputs.clone(), &[], Some(&addr()), None, FEE).is_ok());
+    assert!(SignableTransaction::new(inputs.clone(), &[], Some(addr()), None, FEE).is_ok());
     // Data
     assert!(SignableTransaction::new(inputs.clone(), &[], None, Some(vec![]), FEE).is_ok());
     // No outputs
@@ -229,7 +228,7 @@ async_sequential! {
     );
 
     assert_eq!(
-      SignableTransaction::new(inputs.clone(), &[], Some(&addr()), None, 0),
+      SignableTransaction::new(inputs.clone(), &[], Some(addr()), None, 0),
       Err(TransactionError::TooLowFee),
     );
 
@@ -261,20 +260,19 @@ async_sequential! {
 
     // Declare payments, change, fee
     let payments = [
-      (Address::<NetworkChecked>::new(Network::Regtest, address_payload(key).unwrap()), 1005),
+      (p2tr_script_buf(key).unwrap(), 1005),
-      (Address::<NetworkChecked>::new(Network::Regtest, address_payload(offset_key).unwrap()), 1007)
+      (p2tr_script_buf(offset_key).unwrap(), 1007)
     ];
 
     let change_offset = scanner.register_offset(Scalar::random(&mut OsRng)).unwrap();
     let change_key = key + (ProjectivePoint::GENERATOR * change_offset);
-    let change_addr =
+    let change_addr = p2tr_script_buf(change_key).unwrap();
-      Address::<NetworkChecked>::new(Network::Regtest, address_payload(change_key).unwrap());
 
     // Create and sign the TX
     let tx = SignableTransaction::new(
       vec![output.clone(), offset_output.clone()],
       &payments,
-      Some(&change_addr),
+      Some(change_addr.clone()),
       None,
       FEE
     ).unwrap();
@@ -287,7 +285,7 @@ async_sequential! {
     // Ensure we can scan it
     let outputs = scanner.scan_transaction(&tx);
     for (o, output) in outputs.iter().enumerate() {
-      assert_eq!(output.outpoint(), &OutPoint::new(tx.txid(), u32::try_from(o).unwrap()));
+      assert_eq!(output.outpoint(), &OutPoint::new(tx.compute_txid(), u32::try_from(o).unwrap()));
       assert_eq!(&ReceivedOutput::read::<&[u8]>(&mut output.serialize().as_ref()).unwrap(), output);
     }
 
@@ -299,7 +297,7 @@ async_sequential! {
     for ((output, scanned), payment) in tx.output.iter().zip(outputs.iter()).zip(payments.iter()) {
       assert_eq!(
         output,
-        &TxOut { script_pubkey: payment.0.script_pubkey(), value: Amount::from_sat(payment.1) },
+        &TxOut { script_pubkey: payment.0.clone(), value: Amount::from_sat(payment.1) },
       );
       assert_eq!(scanned.value(), payment.1 );
     }
@@ -314,13 +312,13 @@ async_sequential! {
       input_value - payments.iter().map(|payment| payment.1).sum::<u64>() - needed_fee;
     assert_eq!(
       tx.output[2],
-      TxOut { script_pubkey: change_addr.script_pubkey(), value: Amount::from_sat(change_amount) },
+      TxOut { script_pubkey: change_addr, value: Amount::from_sat(change_amount) },
     );
 
     // This also tests send_raw_transaction and get_transaction, which the RPC test can't
     // effectively test
     rpc.send_raw_transaction(&tx).await.unwrap();
-    let mut hash = *tx.txid().as_raw_hash().as_byte_array();
+    let mut hash = *tx.compute_txid().as_raw_hash().as_byte_array();
     hash.reverse();
     assert_eq!(tx, rpc.get_transaction(&hash).await.unwrap());
     assert_eq!(expected_id, hash);
@@ -344,7 +342,7 @@ async_sequential! {
       &SignableTransaction::new(
         vec![output],
         &[],
-        Some(&Address::<NetworkChecked>::new(Network::Regtest, address_payload(key).unwrap())),
+        Some(p2tr_script_buf(key).unwrap()),
         Some(data.clone()),
         FEE
       ).unwrap()

coins/ethereum/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/coins/ethereum"
 authors = ["Luke Parker <lukeparker5132@gmail.com>", "Elizabeth Binks <elizabethjbinks@gmail.com>"]
 edition = "2021"
 publish = false
-rust-version = "1.74"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true
@@ -29,21 +29,21 @@ frost = { package = "modular-frost", path = "../../crypto/frost", default-featur
 
 alloy-core = { version = "0.7", default-features = false }
 alloy-sol-types = { version = "0.7", default-features = false, features = ["json"] }
-alloy-consensus = { git = "https://github.com/alloy-rs/alloy", rev = "b79db21734cffddc11753fe62ba571565c896f42", default-features = false, features = ["k256"] }
+alloy-consensus = { version = "0.1", default-features = false, features = ["k256"] }
-alloy-network = { git = "https://github.com/alloy-rs/alloy", rev = "b79db21734cffddc11753fe62ba571565c896f42", default-features = false }
+alloy-network = { version = "0.1", default-features = false }
-alloy-rpc-types = { git = "https://github.com/alloy-rs/alloy", rev = "b79db21734cffddc11753fe62ba571565c896f42", default-features = false }
+alloy-rpc-types-eth = { version = "0.1", default-features = false }
-alloy-rpc-client = { git = "https://github.com/alloy-rs/alloy", rev = "b79db21734cffddc11753fe62ba571565c896f42", default-features = false }
+alloy-rpc-client = { version = "0.1", default-features = false }
 alloy-simple-request-transport = { path = "./alloy-simple-request-transport", default-features = false }
-alloy-provider = { git = "https://github.com/alloy-rs/alloy", rev = "b79db21734cffddc11753fe62ba571565c896f42", default-features = false }
+alloy-provider = { version = "0.1", default-features = false }
 
-alloy-node-bindings = { git = "https://github.com/alloy-rs/alloy", rev = "b79db21734cffddc11753fe62ba571565c896f42", default-features = false, optional = true }
+alloy-node-bindings = { version = "0.1", default-features = false, optional = true }
 
 [dev-dependencies]
 frost = { package = "modular-frost", path = "../../crypto/frost", default-features = false, features = ["tests"] }
 
 tokio = { version = "1", features = ["macros"] }
 
-alloy-node-bindings = { git = "https://github.com/alloy-rs/alloy", rev = "b79db21734cffddc11753fe62ba571565c896f42", default-features = false }
+alloy-node-bindings = { version = "0.1", default-features = false }
 
 [features]
-tests = ["alloy-node-bindings"]
+tests = ["alloy-node-bindings", "frost/tests"]

coins/ethereum/alloy-simple-request-transport/Cargo.toml

@@ -21,8 +21,8 @@ tower = "0.4"
 serde_json = { version = "1", default-features = false }
 simple-request = { path = "../../../common/request", default-features = false }
 
-alloy-json-rpc = { git = "https://github.com/alloy-rs/alloy", rev = "b79db21734cffddc11753fe62ba571565c896f42", default-features = false }
+alloy-json-rpc = { version = "0.1", default-features = false }
-alloy-transport = { git = "https://github.com/alloy-rs/alloy", rev = "b79db21734cffddc11753fe62ba571565c896f42", default-features = false }
+alloy-transport = { version = "0.1", default-features = false }
 
 [features]
 default = ["tls"]

coins/ethereum/relayer/Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "serai-ethereum-relayer"
+version = "0.1.0"
+description = "A relayer for Serai's Ethereum transactions"
+license = "AGPL-3.0-only"
+repository = "https://github.com/serai-dex/serai/tree/develop/coins/ethereum/relayer"
+authors = ["Luke Parker <lukeparker5132@gmail.com>"]
+keywords = []
+edition = "2021"
+publish = false
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[lints]
+workspace = true
+
+[dependencies]
+log = { version = "0.4", default-features = false, features = ["std"] }
+env_logger = { version = "0.10", default-features = false, features = ["humantime"] }
+
+tokio = { version = "1", default-features = false, features = ["rt", "time", "io-util", "net", "macros"] }
+
+serai-env = { path = "../../../common/env" }
+serai-db = { path = "../../../common/db" }
+
+[features]
+parity-db = ["serai-db/parity-db"]
+rocksdb = ["serai-db/rocksdb"]

coins/ethereum/relayer/LICENSE

@@ -0,0 +1,15 @@
+AGPL-3.0-only license
+
+Copyright (c) 2023-2024 Luke Parker
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License Version 3 as
+published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.

coins/ethereum/relayer/README.md

@@ -0,0 +1,4 @@
+# Ethereum Transaction Relayer
+
+This server collects Ethereum router commands to be published, offering an RPC
+to fetch them.

coins/ethereum/relayer/src/main.rs

@@ -0,0 +1,100 @@
+pub(crate) use tokio::{
+  io::{AsyncReadExt, AsyncWriteExt},
+  net::TcpListener,
+};
+
+use serai_db::{Get, DbTxn, Db as DbTrait};
+
+#[tokio::main(flavor = "current_thread")]
+async fn main() {
+  // Override the panic handler with one which will panic if any tokio task panics
+  {
+    let existing = std::panic::take_hook();
+    std::panic::set_hook(Box::new(move |panic| {
+      existing(panic);
+      const MSG: &str = "exiting the process due to a task panicking";
+      println!("{MSG}");
+      log::error!("{MSG}");
+      std::process::exit(1);
+    }));
+  }
+
+  if std::env::var("RUST_LOG").is_err() {
+    std::env::set_var("RUST_LOG", serai_env::var("RUST_LOG").unwrap_or_else(|| "info".to_string()));
+  }
+  env_logger::init();
+
+  log::info!("Starting Ethereum relayer server...");
+
+  // Open the DB
+  #[allow(unused_variables, unreachable_code)]
+  let db = {
+    #[cfg(all(feature = "parity-db", feature = "rocksdb"))]
+    panic!("built with parity-db and rocksdb");
+    #[cfg(all(feature = "parity-db", not(feature = "rocksdb")))]
+    let db =
+      serai_db::new_parity_db(&serai_env::var("DB_PATH").expect("path to DB wasn't specified"));
+    #[cfg(feature = "rocksdb")]
+    let db =
+      serai_db::new_rocksdb(&serai_env::var("DB_PATH").expect("path to DB wasn't specified"));
+    db
+  };
+
+  // Start command recipience server
+  // This should not be publicly exposed
+  // TODO: Add auth
+  tokio::spawn({
+    let db = db.clone();
+    async move {
+      // 5132 ^ ((b'E' << 8) | b'R')
+      let server = TcpListener::bind("0.0.0.0:20830").await.unwrap();
+      loop {
+        let (mut socket, _) = server.accept().await.unwrap();
+        let db = db.clone();
+        tokio::spawn(async move {
+          let mut db = db.clone();
+          loop {
+            let Ok(msg_len) = socket.read_u32_le().await else { break };
+            let mut buf = vec![0; usize::try_from(msg_len).unwrap()];
+            let Ok(_) = socket.read_exact(&mut buf).await else { break };
+
+            if buf.len() < 5 {
+              break;
+            }
+            let nonce = u32::from_le_bytes(buf[.. 4].try_into().unwrap());
+            let mut txn = db.txn();
+            txn.put(nonce.to_le_bytes(), &buf[4 ..]);
+            txn.commit();
+
+            let Ok(()) = socket.write_all(&[1]).await else { break };
+
+            log::info!("received signed command #{nonce}");
+          }
+        });
+      }
+    }
+  });
+
+  // Start command fetch server
+  // 5132 ^ ((b'E' << 8) | b'R') + 1
+  let server = TcpListener::bind("0.0.0.0:20831").await.unwrap();
+  loop {
+    let (mut socket, _) = server.accept().await.unwrap();
+    let db = db.clone();
+    tokio::spawn(async move {
+      let db = db.clone();
+      loop {
+        // Nonce to get the router comamnd for
+        let mut buf = vec![0; 4];
+        let Ok(_) = socket.read_exact(&mut buf).await else { break };
+
+        let command = db.get(&buf[.. 4]).unwrap_or(vec![]);
+        let Ok(()) = socket.write_all(&u32::try_from(command.len()).unwrap().to_le_bytes()).await
+        else {
+          break;
+        };
+        let Ok(()) = socket.write_all(&command).await else { break };
+      }
+    });
+  }
+}

coins/ethereum/src/deployer.rs

@@ -5,7 +5,7 @@ use alloy_consensus::{Signed, TxLegacy};
 
 use alloy_sol_types::{SolCall, SolEvent};
 
-use alloy_rpc_types::{BlockNumberOrTag, Filter};
+use alloy_rpc_types_eth::{BlockNumberOrTag, Filter};
 use alloy_simple_request_transport::SimpleRequest;
 use alloy_provider::{Provider, RootProvider};
 
@@ -58,14 +58,7 @@ impl Deployer {
   /// Construct a new view of the `Deployer`.
   pub async fn new(provider: Arc<RootProvider<SimpleRequest>>) -> Result<Option<Self>, Error> {
     let address = Self::address();
-    #[cfg(not(test))]
+    let code = provider.get_code_at(address.into()).await.map_err(|_| Error::ConnectionError)?;
-    let required_block = BlockNumberOrTag::Finalized;
-    #[cfg(test)]
-    let required_block = BlockNumberOrTag::Latest;
-    let code = provider
-      .get_code_at(address.into(), required_block.into())
-      .await
-      .map_err(|_| Error::ConnectionError)?;
     // Contract has yet to be deployed
     if code.is_empty() {
       return Ok(None);

coins/ethereum/src/erc20.rs

@@ -4,7 +4,7 @@ use alloy_core::primitives::{Address, B256, U256};
 
 use alloy_sol_types::{SolInterface, SolEvent};
 
-use alloy_rpc_types::Filter;
+use alloy_rpc_types_eth::Filter;
 use alloy_simple_request_transport::SimpleRequest;
 use alloy_provider::{Provider, RootProvider};
 

coins/ethereum/src/lib.rs

@@ -7,7 +7,7 @@ pub mod alloy {
 
   pub use alloy_consensus as consensus;
   pub use alloy_network as network;
-  pub use alloy_rpc_types as rpc_types;
+  pub use alloy_rpc_types_eth as rpc_types;
   pub use alloy_simple_request_transport as simple_request_transport;
   pub use alloy_rpc_client as rpc_client;
   pub use alloy_provider as provider;

coins/ethereum/src/router.rs

@@ -12,9 +12,9 @@ use alloy_consensus::TxLegacy;
 
 use alloy_sol_types::{SolValue, SolConstructor, SolCall, SolEvent};
 
-use alloy_rpc_types::Filter;
+use alloy_rpc_types_eth::Filter;
 #[cfg(test)]
-use alloy_rpc_types::{BlockId, TransactionRequest, TransactionInput};
+use alloy_rpc_types_eth::{BlockId, TransactionRequest, TransactionInput};
 use alloy_simple_request_transport::SimpleRequest;
 use alloy_provider::{Provider, RootProvider};
 

coins/ethereum/src/tests/mod.rs

@@ -11,7 +11,7 @@ use alloy_core::{
 };
 use alloy_consensus::{SignableTransaction, TxLegacy};
 
-use alloy_rpc_types::{BlockNumberOrTag, TransactionReceipt};
+use alloy_rpc_types_eth::TransactionReceipt;
 use alloy_simple_request_transport::SimpleRequest;
 use alloy_provider::{Provider, RootProvider};
 
@@ -57,15 +57,14 @@ pub async fn send(
   // let chain_id = provider.get_chain_id().await.unwrap();
   // tx.chain_id = Some(chain_id);
   tx.chain_id = None;
-  tx.nonce =
+  tx.nonce = provider.get_transaction_count(address).await.unwrap();
-    provider.get_transaction_count(address, BlockNumberOrTag::Latest.into()).await.unwrap();
   // 100 gwei
   tx.gas_price = 100_000_000_000u128;
 
   let sig = wallet.sign_prehash_recoverable(tx.signature_hash().as_ref()).unwrap();
   assert_eq!(address, tx.clone().into_signed(sig.into()).recover_signer().unwrap());
   assert!(
-    provider.get_balance(address, BlockNumberOrTag::Latest.into()).await.unwrap() >
+    provider.get_balance(address).await.unwrap() >
       ((U256::from(tx.gas_price) * U256::from(tx.gas_limit)) + tx.value)
   );
 

coins/ethereum/src/tests/router.rs

@@ -14,6 +14,7 @@ use frost::{
 use alloy_core::primitives::{Address, U256};
 
 use alloy_simple_request_transport::SimpleRequest;
+use alloy_rpc_types_eth::BlockTransactionsKind;
 use alloy_rpc_client::ClientBuilder;
 use alloy_provider::{Provider, RootProvider};
 
@@ -84,7 +85,7 @@ async fn setup_test() -> (
 
 async fn latest_block_hash(client: &RootProvider<SimpleRequest>) -> [u8; 32] {
   client
-    .get_block(client.get_block_number().await.unwrap().into(), false)
+    .get_block(client.get_block_number().await.unwrap().into(), BlockTransactionsKind::Hashes)
     .await
     .unwrap()
     .unwrap()

coins/ethereum/src/tests/schnorr.rs

@@ -15,7 +15,7 @@ use alloy_core::primitives::Address;
 
 use alloy_sol_types::SolCall;
 
-use alloy_rpc_types::{TransactionInput, TransactionRequest};
+use alloy_rpc_types_eth::{TransactionInput, TransactionRequest};
 use alloy_simple_request_transport::SimpleRequest;
 use alloy_rpc_client::ClientBuilder;
 use alloy_provider::{Provider, RootProvider};

coins/monero/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/coins/monero"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true

coins/monero/src/wallet/scan.rs

@@ -105,13 +105,13 @@ pub struct Metadata {
   /// but the payment ID will be returned here anyway:
   ///
   /// 1) If the payment ID is tied to an output received by a subaddress account
-  /// that spent Monero in the transaction (the received output is considered
+  ///    that spent Monero in the transaction (the received output is considered
-  /// "change" and is not considered a "payment" in this case). If there are multiple
+  ///    "change" and is not considered a "payment" in this case). If there are multiple
-  /// spending subaddress accounts in a transaction, the highest index spent key image
+  ///    spending subaddress accounts in a transaction, the highest index spent key image
-  /// is used to determine the spending subaddress account.
+  ///    is used to determine the spending subaddress account.
   ///
   /// 2) If the payment ID is the unencrypted variant and the block's hf version is
-  /// v12 or higher (https://github.com/serai-dex/serai/issues/512)
+  ///    v12 or higher (https://github.com/serai-dex/serai/issues/512)
   pub payment_id: Option<PaymentId>,
   /// Arbitrary data encoded in TX extra.
   pub arbitrary_data: Vec<Vec<u8>>,

coins/monero/src/wallet/send/mod.rs

@@ -364,8 +364,8 @@ impl Change {
   /// 1) The change in the tx is shunted to the fee (fingerprintable fee).
   ///
   /// 2) If there are 2 outputs in the tx, there would be no payment ID as is the case when the
-  /// reference wallet creates 2 output txs, since monero-serai doesn't know which output
+  ///    reference wallet creates 2 output txs, since monero-serai doesn't know which output
-  /// to tie the dummy payment ID to.
+  ///    to tie the dummy payment ID to.
   pub fn fingerprintable(address: Option<MoneroAddress>) -> Change {
     Change { address, view: None }
   }

common/zalloc/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/common/zalloc"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = []
 edition = "2021"
-rust-version = "1.60"
+rust-version = "1.77.0"
 
 [package.metadata.docs.rs]
 all-features = true
@@ -19,8 +19,10 @@ workspace = true
 [dependencies]
 zeroize = { version = "^1.5", default-features = false }
 
+[build-dependencies]
+rustversion = { version = "1", default-features = false }
+
 [features]
 std = ["zeroize/std"]
 default = ["std"]
-# Commented for now as it requires nightly and we don't use nightly
+allocator = []
-# allocator = []

common/zalloc/build.rs

@@ -0,0 +1,10 @@
+#[rustversion::nightly]
+fn main() {
+  println!("cargo::rustc-check-cfg=cfg(zalloc_rustc_nightly)");
+  println!("cargo::rustc-cfg=zalloc_rustc_nightly");
+}
+
+#[rustversion::not(nightly)]
+fn main() {
+  println!("cargo::rustc-check-cfg=cfg(zalloc_rustc_nightly)");
+}

common/zalloc/src/lib.rs

@@ -1,6 +1,6 @@
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
-#![cfg_attr(feature = "allocator", feature(allocator_api))]
+#![cfg_attr(all(zalloc_rustc_nightly, feature = "allocator"), feature(allocator_api))]
 
 //! Implementation of a Zeroizing Allocator, enabling zeroizing memory on deallocation.
 //! This can either be used with Box (requires nightly and the "allocator" feature) to provide the
@@ -17,12 +17,12 @@ use zeroize::Zeroize;
 /// An allocator wrapper which zeroizes its memory on dealloc.
 pub struct ZeroizingAlloc<T>(pub T);
 
-#[cfg(feature = "allocator")]
+#[cfg(all(zalloc_rustc_nightly, feature = "allocator"))]
 use core::{
   ptr::NonNull,
   alloc::{AllocError, Allocator},
 };
-#[cfg(feature = "allocator")]
+#[cfg(all(zalloc_rustc_nightly, feature = "allocator"))]
 unsafe impl<T: Allocator> Allocator for ZeroizingAlloc<T> {
   fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError> {
     self.0.allocate(layout)

coordinator/src/db.rs

@@ -122,7 +122,7 @@ impl QueuedBatchesDb {
 
   pub fn take(txn: &mut impl DbTxn, set: ValidatorSet) -> Vec<Transaction> {
     let batches_vec = Self::get(txn, set).unwrap_or_default();
-    txn.del(&Self::key(set));
+    txn.del(Self::key(set));
 
     let mut batches: &[u8] = &batches_vec;
     let mut res = vec![];

coordinator/src/tributary/scanner.rs

@@ -133,7 +133,13 @@ mod impl_pst_for_serai {
       key_pair: KeyPair,
       signature: Signature,
     ) {
-      let tx = SeraiValidatorSets::set_keys(set.network, removed, key_pair, signature);
+      // TODO: BoundedVec as an arg to avoid this expect
+      let tx = SeraiValidatorSets::set_keys(
+        set.network,
+        removed.try_into().expect("removing more than allowed"),
+        key_pair,
+        signature,
+      );
       async fn check(serai: SeraiValidatorSets<'_>, set: ValidatorSet, (): ()) -> bool {
         if matches!(serai.keys(set).await, Ok(Some(_))) {
           log::info!("another coordinator set key pair for {:?}", set);

coordinator/tributary/tendermint/src/block.rs

@@ -177,14 +177,14 @@ impl<N: Network> BlockData<N> {
       let new_block = last_block_or_round(&mut txn, LATEST_BLOCK_KEY, self.number.0)?;
       if new_block {
         // Delete the latest round key
-        txn.del(&key(LATEST_ROUND_KEY));
+        txn.del(key(LATEST_ROUND_KEY));
       }
       let new_round = last_block_or_round(&mut txn, LATEST_ROUND_KEY, round_number.0.into())?;
       if new_block || new_round {
         // Delete the messages for the old round
-        txn.del(&key(PROPOSE_KEY));
+        txn.del(key(PROPOSE_KEY));
-        txn.del(&key(PEVOTE_KEY));
+        txn.del(key(PEVOTE_KEY));
-        txn.del(&key(PRECOMMIT_KEY));
+        txn.del(key(PRECOMMIT_KEY));
       }
 
       // Check we haven't sent this message within this round

crypto/dkg/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/dkg"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["dkg", "multisig", "threshold", "ff", "group"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/dkg/src/promote.rs

@@ -64,10 +64,7 @@ pub struct GeneratorPromotion<C1: Ciphersuite, C2: Ciphersuite> {
   _c2: PhantomData<C2>,
 }
 
-impl<C1: Ciphersuite, C2: Ciphersuite> GeneratorPromotion<C1, C2>
+impl<C1: Ciphersuite, C2: Ciphersuite<F = C1::F, G = C1::G>> GeneratorPromotion<C1, C2> {
-where
-  C2: Ciphersuite<F = C1::F, G = C1::G>,
-{
   /// Begin promoting keys from one generator to another. Returns a proof this share was properly
   /// promoted.
   pub fn promote<R: RngCore + CryptoRng>(

crypto/dleq/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/crypto/dleq"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/dleq/src/cross_group/aos.rs

@@ -53,11 +53,11 @@ pub(crate) struct Aos<G0: PrimeGroup + Zeroize, G1: PrimeGroup + Zeroize, const
   s: [(G0::Scalar, G1::Scalar); RING_LEN],
 }
 
-impl<G0: PrimeGroup + Zeroize, G1: PrimeGroup + Zeroize, const RING_LEN: usize>
+impl<
-  Aos<G0, G1, RING_LEN>
+    G0: PrimeGroup<Scalar: PrimeFieldBits + Zeroize> + Zeroize,
-where
+    G1: PrimeGroup<Scalar: PrimeFieldBits + Zeroize> + Zeroize,
-  G0::Scalar: PrimeFieldBits + Zeroize,
+    const RING_LEN: usize,
-  G1::Scalar: PrimeFieldBits + Zeroize,
+  > Aos<G0, G1, RING_LEN>
 {
   #[allow(non_snake_case)]
   fn nonces<T: Transcript>(mut transcript: T, nonces: (G0, G1)) -> (G0::Scalar, G1::Scalar) {

crypto/dleq/src/cross_group/bits.rs

@@ -76,14 +76,11 @@ pub(crate) struct Bits<
 }
 
 impl<
-    G0: PrimeGroup + Zeroize,
+    G0: PrimeGroup<Scalar: PrimeFieldBits + Zeroize> + Zeroize,
-    G1: PrimeGroup + Zeroize,
+    G1: PrimeGroup<Scalar: PrimeFieldBits + Zeroize> + Zeroize,
     const SIGNATURE: u8,
     const RING_LEN: usize,
   > Bits<G0, G1, SIGNATURE, RING_LEN>
-where
-  G0::Scalar: PrimeFieldBits + Zeroize,
-  G1::Scalar: PrimeFieldBits + Zeroize,
 {
   fn transcript<T: Transcript>(transcript: &mut T, i: usize, commitments: (G0, G1)) {
     transcript.domain_separate(b"bits");

crypto/dleq/src/cross_group/mod.rs

@@ -112,15 +112,12 @@ pub enum DLEqError {
 // anyone who wants it
 #[derive(Clone, PartialEq, Eq, Debug)]
 pub struct __DLEqProof<
-  G0: PrimeGroup + Zeroize,
+  G0: PrimeGroup<Scalar: PrimeFieldBits> + Zeroize,
-  G1: PrimeGroup + Zeroize,
+  G1: PrimeGroup<Scalar: PrimeFieldBits> + Zeroize,
   const SIGNATURE: u8,
   const RING_LEN: usize,
   const REMAINDER_RING_LEN: usize,
-> where
+> {
-  G0::Scalar: PrimeFieldBits,
-  G1::Scalar: PrimeFieldBits,
-{
   bits: Vec<Bits<G0, G1, SIGNATURE, RING_LEN>>,
   remainder: Option<Bits<G0, G1, SIGNATURE, REMAINDER_RING_LEN>>,
   poks: (SchnorrPoK<G0>, SchnorrPoK<G1>),
@@ -200,15 +197,12 @@ dleq!(
 );
 
 impl<
-    G0: PrimeGroup + Zeroize,
+    G0: PrimeGroup<Scalar: PrimeFieldBits + Zeroize> + Zeroize,
-    G1: PrimeGroup + Zeroize,
+    G1: PrimeGroup<Scalar: PrimeFieldBits + Zeroize> + Zeroize,
     const SIGNATURE: u8,
     const RING_LEN: usize,
     const REMAINDER_RING_LEN: usize,
   > __DLEqProof<G0, G1, SIGNATURE, RING_LEN, REMAINDER_RING_LEN>
-where
-  G0::Scalar: PrimeFieldBits + Zeroize,
-  G1::Scalar: PrimeFieldBits + Zeroize,
 {
   pub(crate) fn transcript<T: Transcript>(
     transcript: &mut T,

crypto/dleq/src/cross_group/schnorr.rs

@@ -28,10 +28,7 @@ pub(crate) struct SchnorrPoK<G: PrimeGroup + Zeroize> {
   s: G::Scalar,
 }
 
-impl<G: PrimeGroup + Zeroize> SchnorrPoK<G>
+impl<G: PrimeGroup<Scalar: PrimeFieldBits + Zeroize> + Zeroize> SchnorrPoK<G> {
-where
-  G::Scalar: PrimeFieldBits + Zeroize,
-{
   // Not HRAm due to the lack of m
   #[allow(non_snake_case)]
   fn hra<T: Transcript>(transcript: &mut T, generator: G, R: G, A: G) -> G::Scalar {

crypto/dleq/src/lib.rs

@@ -105,19 +105,13 @@ pub enum DLEqError {
 
 /// A proof that points have the same discrete logarithm across generators.
 #[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
-pub struct DLEqProof<G: PrimeGroup>
+pub struct DLEqProof<G: PrimeGroup<Scalar: Zeroize>> {
-where
-  G::Scalar: Zeroize,
-{
   c: G::Scalar,
   s: G::Scalar,
 }
 
 #[allow(non_snake_case)]
-impl<G: PrimeGroup> DLEqProof<G>
+impl<G: PrimeGroup<Scalar: Zeroize>> DLEqProof<G> {
-where
-  G::Scalar: Zeroize,
-{
   fn transcript<T: Transcript>(transcript: &mut T, generator: G, nonce: G, point: G) {
     transcript.append_message(b"generator", generator.to_bytes());
     transcript.append_message(b"nonce", nonce.to_bytes());
@@ -213,20 +207,14 @@ where
 /// across some generators, yet with a smaller overall proof size.
 #[cfg(feature = "std")]
 #[derive(Clone, PartialEq, Eq, Debug, Zeroize)]
-pub struct MultiDLEqProof<G: PrimeGroup>
+pub struct MultiDLEqProof<G: PrimeGroup<Scalar: Zeroize>> {
-where
-  G::Scalar: Zeroize,
-{
   c: G::Scalar,
   s: Vec<G::Scalar>,
 }
 
 #[cfg(feature = "std")]
 #[allow(non_snake_case)]
-impl<G: PrimeGroup> MultiDLEqProof<G>
+impl<G: PrimeGroup<Scalar: Zeroize>> MultiDLEqProof<G> {
-where
-  G::Scalar: Zeroize,
-{
   /// Prove for each scalar that the series of points created by multiplying it against its
   /// matching generators share a discrete logarithm.
   /// This function panics if `generators.len() != scalars.len()`.

crypto/dleq/src/tests/cross_group/schnorr.rs

@@ -14,10 +14,7 @@ use transcript::{Transcript, RecommendedTranscript};
 
 use crate::cross_group::schnorr::SchnorrPoK;
 
-fn test_schnorr<G: PrimeGroup + Zeroize>()
+fn test_schnorr<G: PrimeGroup<Scalar: PrimeFieldBits + Zeroize> + Zeroize>() {
-where
-  G::Scalar: PrimeFieldBits + Zeroize,
-{
   let transcript = RecommendedTranscript::new(b"Schnorr Test");
 
   let mut batch = BatchVerifier::new(10);

crypto/ed448/src/backend.rs

@@ -34,7 +34,7 @@ macro_rules! math_op {
     impl $Op<$Other> for $Value {
       type Output = $Value;
       fn $op_fn(self, other: $Other) -> Self::Output {
-        Self($function(self.0, other.0))
+        $Value($function(self.0, other.0))
       }
     }
     impl $Assign<$Other> for $Value {
@@ -45,7 +45,7 @@ macro_rules! math_op {
     impl<'a> $Op<&'a $Other> for $Value {
       type Output = $Value;
       fn $op_fn(self, other: &'a $Other) -> Self::Output {
-        Self($function(self.0, other.0))
+        $Value($function(self.0, other.0))
       }
     }
     impl<'a> $Assign<&'a $Other> for $Value {
@@ -60,7 +60,7 @@ macro_rules! from_wrapper {
   ($wrapper: ident, $inner: ident, $uint: ident) => {
     impl From<$uint> for $wrapper {
       fn from(a: $uint) -> $wrapper {
-        Self(Residue::new(&$inner::from(a)))
+        $wrapper(Residue::new(&$inner::from(a)))
       }
     }
   };
@@ -127,7 +127,7 @@ macro_rules! field {
     impl Neg for $FieldName {
       type Output = $FieldName;
       fn neg(self) -> $FieldName {
-        Self(self.0.neg())
+        $FieldName(self.0.neg())
       }
     }
 
@@ -141,13 +141,13 @@ macro_rules! field {
     impl $FieldName {
       /// Perform an exponentiation.
       pub fn pow(&self, other: $FieldName) -> $FieldName {
-        let mut table = [Self(Residue::ONE); 16];
+        let mut table = [$FieldName(Residue::ONE); 16];
         table[1] = *self;
         for i in 2 .. 16 {
           table[i] = table[i - 1] * self;
         }
 
-        let mut res = Self(Residue::ONE);
+        let mut res = $FieldName(Residue::ONE);
         let mut bits = 0;
         for (i, mut bit) in other.to_le_bits().iter_mut().rev().enumerate() {
           bits <<= 1;
@@ -170,8 +170,8 @@ macro_rules! field {
     }
 
     impl Field for $FieldName {
-      const ZERO: Self = Self(Residue::ZERO);
+      const ZERO: Self = $FieldName(Residue::ZERO);
-      const ONE: Self = Self(Residue::ONE);
+      const ONE: Self = $FieldName(Residue::ONE);
 
       fn random(mut rng: impl RngCore) -> Self {
         let mut bytes = [0; 112];
@@ -188,12 +188,12 @@ macro_rules! field {
 
       fn invert(&self) -> CtOption<Self> {
         const NEG_2: $FieldName =
-          Self($ResidueType::sub(&$ResidueType::ZERO, &$ResidueType::new(&U448::from_u8(2))));
+          $FieldName($ResidueType::sub(&$ResidueType::ZERO, &$ResidueType::new(&U448::from_u8(2))));
         CtOption::new(self.pow(NEG_2), !self.is_zero())
       }
 
       fn sqrt(&self) -> CtOption<Self> {
-        const MOD_1_4: $FieldName = Self($ResidueType::new(
+        const MOD_1_4: $FieldName = $FieldName($ResidueType::new(
           &$MODULUS.saturating_add(&U448::ONE).wrapping_div(&U448::from_u8(4)),
         ));
 
@@ -217,14 +217,14 @@ macro_rules! field {
       const TWO_INV: Self = $FieldName($ResidueType::new(&U448::from_u8(2)).invert().0);
 
       const MULTIPLICATIVE_GENERATOR: Self =
-        Self(Residue::new(&U448::from_u8($MULTIPLICATIVE_GENERATOR)));
+        $FieldName(Residue::new(&U448::from_u8($MULTIPLICATIVE_GENERATOR)));
       // True for both the Ed448 Scalar field and FieldElement field
       const S: u32 = 1;
 
       // Both fields have their root of unity as -1
       const ROOT_OF_UNITY: Self =
-        Self($ResidueType::sub(&$ResidueType::ZERO, &$ResidueType::new(&U448::ONE)));
+        $FieldName($ResidueType::sub(&$ResidueType::ZERO, &$ResidueType::new(&U448::ONE)));
-      const ROOT_OF_UNITY_INV: Self = Self(Self::ROOT_OF_UNITY.0.invert().0);
+      const ROOT_OF_UNITY_INV: Self = $FieldName(Self::ROOT_OF_UNITY.0.invert().0);
 
       const DELTA: Self = $FieldName(Residue::new(&U448::from_le_hex($DELTA)));
 

crypto/ff-group-tests/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/ff-group-te
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["ff", "group", "ecc"]
 edition = "2021"
-rust-version = "1.60"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/ff-group-tests/src/group.rs

@@ -178,10 +178,7 @@ pub fn test_prime_group<R: RngCore, G: PrimeGroup>(rng: &mut R) {
 }
 
 /// Run all tests offered by this crate on the group.
-pub fn test_prime_group_bits<R: RngCore, G: PrimeGroup>(rng: &mut R)
+pub fn test_prime_group_bits<R: RngCore, G: PrimeGroup<Scalar: PrimeFieldBits>>(rng: &mut R) {
-where
-  G::Scalar: PrimeFieldBits,
-{
   test_prime_field_bits::<R, G::Scalar>(rng);
   test_prime_group::<R, G>(rng);
 }

crypto/frost/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/frost"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["frost", "multisig", "threshold"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/frost/README.md

@@ -10,7 +10,7 @@ integrating with existing systems.
 
 This library offers ciphersuites compatible with the
 [IETF draft](https://github.com/cfrg/draft-irtf-cfrg-frost). Currently, version
-11 is supported.
+15 is supported.
 
 This library was
 [audited by Cypher Stack in March 2023](https://github.com/serai-dex/serai/raw/e1bb2c191b7123fd260d008e31656d090d559d21/audits/Cypher%20Stack%20crypto%20March%202023/Audit.pdf),

crypto/frost/src/sign.rs

@@ -362,9 +362,7 @@ impl<C: Curve, A: Algorithm<C>> SignMachine<A::Signature> for AlgorithmSignMachi
       rho_transcript.append_message(b"message", C::hash_msg(msg));
       rho_transcript.append_message(
         b"preprocesses",
-        &C::hash_commitments(
+        C::hash_commitments(self.params.algorithm.transcript().challenge(b"preprocesses").as_ref()),
-          self.params.algorithm.transcript().challenge(b"preprocesses").as_ref(),
-        ),
       );
 
       // Generate the per-signer binding factors

crypto/multiexp/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/multiexp"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["multiexp", "ff", "group"]
 edition = "2021"
-rust-version = "1.70"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/multiexp/src/batch.rs

@@ -12,27 +12,21 @@ use crate::{multiexp, multiexp_vartime};
 // Flatten the contained statements to a single Vec.
 // Wrapped in Zeroizing in case any of the included statements contain private values.
 #[allow(clippy::type_complexity)]
-fn flat<Id: Copy + Zeroize, G: Group + Zeroize>(
+fn flat<Id: Copy + Zeroize, G: Group<Scalar: PrimeFieldBits + Zeroize> + Zeroize>(
   slice: &[(Id, Vec<(G::Scalar, G)>)],
-) -> Zeroizing<Vec<(G::Scalar, G)>>
+) -> Zeroizing<Vec<(G::Scalar, G)>> {
-where
-  <G as Group>::Scalar: PrimeFieldBits + Zeroize,
-{
   Zeroizing::new(slice.iter().flat_map(|pairs| pairs.1.iter()).copied().collect::<Vec<_>>())
 }
 
 /// A batch verifier intended to verify a series of statements are each equivalent to zero.
 #[allow(clippy::type_complexity)]
 #[derive(Clone, Zeroize)]
-pub struct BatchVerifier<Id: Copy + Zeroize, G: Group + Zeroize>(
+pub struct BatchVerifier<Id: Copy + Zeroize, G: Group<Scalar: PrimeFieldBits + Zeroize> + Zeroize>(
   Zeroizing<Vec<(Id, Vec<(G::Scalar, G)>)>>,
-)
+);
-where
-  <G as Group>::Scalar: PrimeFieldBits + Zeroize;
 
-impl<Id: Copy + Zeroize, G: Group + Zeroize> BatchVerifier<Id, G>
+impl<Id: Copy + Zeroize, G: Group<Scalar: PrimeFieldBits + Zeroize> + Zeroize>
-where
+  BatchVerifier<Id, G>
-  <G as Group>::Scalar: PrimeFieldBits + Zeroize,
 {
   /// Create a new batch verifier, expected to verify the following amount of statements.
   ///

crypto/multiexp/src/lib.rs

@@ -49,10 +49,10 @@ fn u8_from_bool(bit_ref: &mut bool) -> u8 {
 
 // Convert scalars to `window`-sized bit groups, as needed to index a table
 // This algorithm works for `window <= 8`
-pub(crate) fn prep_bits<G: Group>(pairs: &[(G::Scalar, G)], window: u8) -> Vec<Vec<u8>>
+pub(crate) fn prep_bits<G: Group<Scalar: PrimeFieldBits>>(
-where
+  pairs: &[(G::Scalar, G)],
-  G::Scalar: PrimeFieldBits,
+  window: u8,
-{
+) -> Vec<Vec<u8>> {
   let w_usize = usize::from(window);
 
   let mut groupings = vec![];
@@ -175,10 +175,7 @@ fn algorithm(len: usize) -> Algorithm {
 
 /// Performs a multiexponentiation, automatically selecting the optimal algorithm based on the
 /// amount of pairs.
-pub fn multiexp<G: Group>(pairs: &[(G::Scalar, G)]) -> G
+pub fn multiexp<G: Group<Scalar: PrimeFieldBits + Zeroize>>(pairs: &[(G::Scalar, G)]) -> G {
-where
-  G::Scalar: PrimeFieldBits + Zeroize,
-{
   match algorithm(pairs.len()) {
     Algorithm::Null => Group::identity(),
     Algorithm::Single => pairs[0].1 * pairs[0].0,
@@ -190,10 +187,7 @@ where
 
 /// Performs a multiexponentiation in variable time, automatically selecting the optimal algorithm
 /// based on the amount of pairs.
-pub fn multiexp_vartime<G: Group>(pairs: &[(G::Scalar, G)]) -> G
+pub fn multiexp_vartime<G: Group<Scalar: PrimeFieldBits>>(pairs: &[(G::Scalar, G)]) -> G {
-where
-  G::Scalar: PrimeFieldBits,
-{
   match algorithm(pairs.len()) {
     Algorithm::Null => Group::identity(),
     Algorithm::Single => pairs[0].1 * pairs[0].0,

crypto/multiexp/src/pippenger.rs

@@ -7,10 +7,10 @@ use crate::prep_bits;
 
 // Pippenger's algorithm for multiexponentiation, as published in the SIAM Journal on Computing
 // DOI: 10.1137/0209022
-pub(crate) fn pippenger<G: Group>(pairs: &[(G::Scalar, G)], window: u8) -> G
+pub(crate) fn pippenger<G: Group<Scalar: PrimeFieldBits>>(
-where
+  pairs: &[(G::Scalar, G)],
-  G::Scalar: PrimeFieldBits,
+  window: u8,
-{
+) -> G {
   let mut bits = prep_bits(pairs, window);
 
   let mut res = G::identity();
@@ -37,10 +37,10 @@ where
   res
 }
 
-pub(crate) fn pippenger_vartime<G: Group>(pairs: &[(G::Scalar, G)], window: u8) -> G
+pub(crate) fn pippenger_vartime<G: Group<Scalar: PrimeFieldBits>>(
-where
+  pairs: &[(G::Scalar, G)],
-  G::Scalar: PrimeFieldBits,
+  window: u8,
-{
+) -> G {
   let bits = prep_bits(pairs, window);
 
   let mut res = G::identity();

crypto/multiexp/src/straus.rs

@@ -24,10 +24,10 @@ fn prep_tables<G: Group>(pairs: &[(G::Scalar, G)], window: u8) -> Vec<Vec<G>> {
 
 // Straus's algorithm for multiexponentiation, as published in The American Mathematical Monthly
 // DOI: 10.2307/2310929
-pub(crate) fn straus<G: Group>(pairs: &[(G::Scalar, G)], window: u8) -> G
+pub(crate) fn straus<G: Group<Scalar: PrimeFieldBits + Zeroize>>(
-where
+  pairs: &[(G::Scalar, G)],
-  G::Scalar: PrimeFieldBits + Zeroize,
+  window: u8,
-{
+) -> G {
   let mut groupings = prep_bits(pairs, window);
   let tables = prep_tables(pairs, window);
 
@@ -48,10 +48,10 @@ where
   res
 }
 
-pub(crate) fn straus_vartime<G: Group>(pairs: &[(G::Scalar, G)], window: u8) -> G
+pub(crate) fn straus_vartime<G: Group<Scalar: PrimeFieldBits>>(
-where
+  pairs: &[(G::Scalar, G)],
-  G::Scalar: PrimeFieldBits,
+  window: u8,
-{
+) -> G {
   let groupings = prep_bits(pairs, window);
   let tables = prep_tables(pairs, window);
 

crypto/multiexp/src/tests/batch.rs

@@ -9,10 +9,7 @@ use group::Group;
 
 use crate::BatchVerifier;
 
-pub(crate) fn test_batch<G: Group + Zeroize>()
+pub(crate) fn test_batch<G: Group<Scalar: PrimeFieldBits + Zeroize> + Zeroize>() {
-where
-  G::Scalar: PrimeFieldBits + Zeroize,
-{
   let valid = |batch: BatchVerifier<_, G>| {
     assert!(batch.verify());
     assert!(batch.verify_vartime());

crypto/multiexp/src/tests/mod.rs

@@ -18,10 +18,7 @@ mod batch;
 use batch::test_batch;
 
 #[allow(dead_code)]
-fn benchmark_internal<G: Group>(straus_bool: bool)
+fn benchmark_internal<G: Group<Scalar: PrimeFieldBits + Zeroize>>(straus_bool: bool) {
-where
-  G::Scalar: PrimeFieldBits + Zeroize,
-{
   let runs: usize = 20;
 
   let mut start = 0;
@@ -86,10 +83,7 @@ where
   }
 }
 
-fn test_multiexp<G: Group>()
+fn test_multiexp<G: Group<Scalar: PrimeFieldBits + Zeroize>>() {
-where
-  G::Scalar: PrimeFieldBits + Zeroize,
-{
   let test = |pairs: &[_], sum| {
     // These should automatically determine the best algorithm
     assert_eq!(multiexp(pairs), sum);

crypto/schnorr/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/schnorr"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["schnorr", "ff", "group"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/schnorr/src/tests/rfc8032.rs

@@ -52,7 +52,7 @@ fn test_rfc8032() {
       SchnorrSignature::<Ed25519>::read::<&[u8]>(&mut hex::decode(vector.2).unwrap().as_ref())
         .unwrap();
     let hram = Sha512::new_with_prefix(
-      &[sig.R.to_bytes().as_ref(), &key.to_bytes(), &hex::decode(vector.1).unwrap()].concat(),
+      [sig.R.to_bytes().as_ref(), &key.to_bytes(), &hex::decode(vector.1).unwrap()].concat(),
     );
     assert!(sig.verify(key, Scalar::from_hash(hram)));
   }

crypto/schnorrkel/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/schnorrkel"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["frost", "multisig", "threshold", "schnorrkel"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/transcript/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/transcript"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["transcript"]
 edition = "2021"
-rust-version = "1.73"
+rust-version = "1.79"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/transcript/README.md

@@ -3,9 +3,9 @@
 Flexible Transcript is a crate offering:
 - `Transcript`, a trait offering functions transcripts should implement.
 - `DigestTranscript`, a competent transcript format instantiated against a
-provided hash function.
+  provided hash function.
 - `MerlinTranscript`, a wrapper of `merlin` into the trait (available via the
-`merlin` feature).
+  `merlin` feature).
 - `RecommendedTranscript`, a transcript recommended for usage in applications.
   Currently, this is `DigestTranscript<Blake2b512>` (available via the
   `recommended` feature).

crypto/transcript/src/tests.rs

@@ -1,10 +1,7 @@
 use crate::Transcript;
 
 /// Test the sanity of a transcript.
-pub fn test_transcript<T: Transcript>()
+pub fn test_transcript<T: Transcript<Challenge: PartialEq>>() {
-where
-  T::Challenge: PartialEq,
-{
   // Ensure distinct names cause distinct challenges
   {
     let mut t1 = T::new(b"1");

deny.toml

@@ -1,19 +1,19 @@
 [advisories]
+version = 2
+
 db-path = "~/.cargo/advisory-db"
 db-urls = ["https://github.com/rustsec/advisory-db"]
 
-vulnerability = "deny"
 yanked = "deny"
-notice = "warn"
-unmaintained = "warn"
 
 ignore = [
+  "RUSTSEC-2020-0168", # mach is unmaintained
   "RUSTSEC-2021-0139", # https://github.com/serai-dex/serai/228
   "RUSTSEC-2022-0061", # https://github.com/serai-dex/serai/227
 ]
 
 [licenses]
-unlicensed = "deny"
+version = 2
 
 allow = [
   # Effective public domain
@@ -36,14 +36,11 @@ allow = [
   "GPL-3.0 WITH Classpath-exception-2.0",
 ]
 
-copyleft = "deny"
-allow-osi-fsf-free = "neither"
-default = "deny"
-
 exceptions = [
   { allow = ["AGPL-3.0"], name = "serai-env" },
 
   { allow = ["AGPL-3.0"], name = "ethereum-serai" },
+  { allow = ["AGPL-3.0"], name = "serai-ethereum-relayer" },
 
   { allow = ["AGPL-3.0"], name = "serai-message-queue" },
 
@@ -101,7 +98,6 @@ allow-git = [
   "https://github.com/rust-lang-nursery/lazy-static.rs",
   "https://github.com/serai-dex/substrate-bip39",
   "https://github.com/serai-dex/substrate",
-  "https://github.com/alloy-rs/alloy",
   "https://github.com/monero-rs/base58-monero",
   "https://github.com/orcalabs/dockertest-rs",
 ]

docs/Gemfile.lock

@@ -13,7 +13,7 @@ GEM
     forwardable-extended (2.6.0)
     google-protobuf (3.25.3-x86_64-linux)
     http_parser.rb (0.8.0)
-    i18n (1.14.4)
+    i18n (1.14.5)
       concurrent-ruby (~> 1.0)
     jekyll (4.3.3)
       addressable (~> 2.4)
@@ -55,17 +55,19 @@ GEM
     mercenary (0.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (5.0.4)
+    public_suffix (5.0.5)
-    rake (13.1.0)
+    rake (13.2.1)
     rb-fsevent (0.11.2)
-    rb-inotify (0.10.1)
+    rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.2.6)
+    rexml (3.2.8)
-    rouge (4.2.0)
+      strscan (>= 3.0.9)
+    rouge (4.2.1)
     safe_yaml (1.0.5)
     sass-embedded (1.63.6)
       google-protobuf (~> 3.23)
       rake (>= 13.0.0)
+    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     unicode-display_width (2.5.0)

orchestration/dev/coins/ethereum-relayer/.folder

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+RPC_USER="${RPC_USER:=serai}"
+RPC_PASS="${RPC_PASS:=seraidex}"
+
+# Run Monero
+monerod --non-interactive --regtest --offline --fixed-difficulty=1 \
+  --no-zmq --rpc-bind-ip=0.0.0.0 --rpc-bind-port=18081 --confirm-external-bind \
+  --rpc-access-control-origins "*" --disable-rpc-ban \
+  --rpc-login=$RPC_USER:$RPC_PASS \
+  $1

orchestration/runtime/Dockerfile

@@ -1,5 +1,5 @@
-# rust:1.77.0-slim-bookworm as of March 22nd, 2024 (GMT)
+# rust:1.79.0-slim-bookworm as of June 14th, 2024 (GMT)
-FROM --platform=linux/amd64 rust@sha256:e785e4aa81f87bc1ee02fa2026ffbc491e0410bdaf6652cea74884373f452664 as deterministic
+FROM --platform=linux/amd64 rust@sha256:fa189cd885739dd17fc6bb4e132687fce43f2bf42983c0ac39b60e4943201e9c as deterministic
 
 # Move to a Debian package snapshot
 RUN rm -rf /etc/apt/sources.list.d/debian.sources && \

orchestration/src/coordinator.rs

@@ -17,6 +17,7 @@ pub fn coordinator(
   let longer_reattempts = if network == Network::Dev { "longer-reattempts" } else { "" };
   let setup = mimalloc(Os::Debian).to_string() +
     &build_serai_service(
+      "",
       network.release(),
       &format!("{db} {longer_reattempts}"),
       "serai-coordinator",

orchestration/src/ethereum_relayer.rs

@@ -0,0 +1,39 @@
+use std::path::Path;
+
+use crate::{Network, Os, mimalloc, os, build_serai_service, write_dockerfile};
+
+pub fn ethereum_relayer(orchestration_path: &Path, network: Network) {
+  let setup = mimalloc(Os::Debian).to_string() +
+    &build_serai_service("", network.release(), network.db(), "serai-ethereum-relayer");
+
+  let env_vars = [
+    ("DB_PATH", "/volume/ethereum-relayer-db".to_string()),
+    ("RUST_LOG", "info,serai_ethereum_relayer=trace".to_string()),
+  ];
+  let mut env_vars_str = String::new();
+  for (env_var, value) in env_vars {
+    env_vars_str += &format!(r#"{env_var}=${{{env_var}:="{value}"}} "#);
+  }
+
+  let run_ethereum_relayer = format!(
+    r#"
+# Copy the relayer server binary and relevant license
+COPY --from=builder --chown=ethereumrelayer /serai/bin/serai-ethereum-relayer /bin
+
+# Run ethereum-relayer
+EXPOSE 20830
+EXPOSE 20831
+CMD {env_vars_str} serai-ethereum-relayer
+"#
+  );
+
+  let run = os(Os::Debian, "", "ethereumrelayer") + &run_ethereum_relayer;
+  let res = setup + &run;
+
+  let mut ethereum_relayer_path = orchestration_path.to_path_buf();
+  ethereum_relayer_path.push("coins");
+  ethereum_relayer_path.push("ethereum-relayer");
+  ethereum_relayer_path.push("Dockerfile");
+
+  write_dockerfile(ethereum_relayer_path, &res);
+}

orchestration/src/main.rs

@@ -32,6 +32,9 @@ use mimalloc::mimalloc;
 mod coins;
 use coins::*;
 
+mod ethereum_relayer;
+use ethereum_relayer::ethereum_relayer;
+
 mod message_queue;
 use message_queue::message_queue;
 
@@ -137,13 +140,13 @@ WORKDIR /home/{user}
   }
 }
 
-fn build_serai_service(release: bool, features: &str, package: &str) -> String {
+fn build_serai_service(prelude: &str, release: bool, features: &str, package: &str) -> String {
   let profile = if release { "release" } else { "debug" };
   let profile_flag = if release { "--release" } else { "" };
 
   format!(
     r#"
-FROM rust:1.77-slim-bookworm as builder
+FROM rust:1.79-slim-bookworm as builder
 
 COPY --from=mimalloc-debian libmimalloc.so /usr/lib
 RUN echo "/usr/lib/libmimalloc.so" >> /etc/ld.so.preload
@@ -159,6 +162,8 @@ RUN apt install -y make protobuf-compiler
 # Add the wasm toolchain
 RUN rustup target add wasm32-unknown-unknown
 
+{prelude}
+
 # Add files for build
 ADD patches /serai/patches
 ADD common /serai/common
@@ -278,6 +283,8 @@ fn dockerfiles(network: Network) {
   let ethereum_key = infrastructure_keys.remove("ethereum").unwrap();
   let monero_key = infrastructure_keys.remove("monero").unwrap();
 
+  ethereum_relayer(&orchestration_path, network);
+
   message_queue(
     &orchestration_path,
     network,
@@ -361,6 +368,7 @@ fn start(network: Network, services: HashSet<String>) {
     let name = match service.as_ref() {
       "serai" => "serai",
       "coordinator" => "coordinator",
+      "ethereum-relayer" => "ethereum-relayer",
       "message-queue" => "message-queue",
       "bitcoin-daemon" => "bitcoin",
       "bitcoin-processor" => "bitcoin-processor",
@@ -374,23 +382,17 @@ fn start(network: Network, services: HashSet<String>) {
     let serai_runtime_volume = format!("serai-{}-runtime-volume", network.label());
     if name == "serai" {
       // Check if it's built by checking if the volume has the expected runtime file
+      let wasm_build_container_name = format!("serai-{}-runtime", network.label());
       let built = || {
-        if let Ok(path) = Command::new("docker")
+        if let Ok(state_and_status) = Command::new("docker")
-          .arg("volume")
           .arg("inspect")
           .arg("-f")
-          .arg("{{ .Mountpoint }}")
+          .arg("{{.State.Status}}:{{.State.ExitCode}}")
-          .arg(&serai_runtime_volume)
+          .arg(&wasm_build_container_name)
           .output()
         {
-          if let Ok(path) = String::from_utf8(path.stdout) {
+          if let Ok(state_and_status) = String::from_utf8(state_and_status.stdout) {
-            if let Ok(iter) = std::fs::read_dir(PathBuf::from(path.trim())) {
+            return state_and_status.trim() == "exited:0";
-              for item in iter.flatten() {
-                if item.file_name() == "serai.wasm" {
-                  return true;
-                }
-              }
-            }
           }
         }
         false
@@ -493,6 +495,10 @@ fn start(network: Network, services: HashSet<String>) {
             command
           }
         }
+        "ethereum-relayer" => {
+          // Expose the router command fetch server
+          command.arg("-p").arg("20831:20831")
+        }
         "monero" => {
           // Expose the RPC for tests
           if network == Network::Dev {
@@ -559,6 +565,9 @@ Commands:
     - `message-queue`
     - `bitcoin-daemon`
     - `bitcoin-processor`
+    - `ethereum-daemon`
+    - `ethereum-processor`
+    - `ethereum-relayer`
     - `monero-daemon`
     - `monero-processor`
     - `monero-wallet-rpc` (if "dev")
@@ -591,6 +600,9 @@ Commands:
     Some("start") => {
       let mut services = HashSet::new();
       for arg in args {
+        if arg == "ethereum-processor" {
+          services.insert("ethereum-relayer".to_string());
+        }
         if let Some(ext_network) = arg.strip_suffix("-processor") {
           services.insert(ext_network.to_string() + "-daemon");
         }

orchestration/src/message_queue.rs

@@ -13,7 +13,7 @@ pub fn message_queue(
   monero_key: <Ristretto as Ciphersuite>::G,
 ) {
   let setup = mimalloc(Os::Debian).to_string() +
-    &build_serai_service(network.release(), network.db(), "serai-message-queue");
+    &build_serai_service("", network.release(), network.db(), "serai-message-queue");
 
   let env_vars = [
     ("COORDINATOR_KEY", hex::encode(coordinator_key.to_bytes())),

orchestration/src/processor.rs

@@ -17,6 +17,15 @@ pub fn processor(
 ) {
   let setup = mimalloc(Os::Debian).to_string() +
     &build_serai_service(
+      if coin == "ethereum" {
+        r#"
+RUN cargo install svm-rs
+RUN svm install 0.8.25
+RUN svm use 0.8.25
+"#
+      } else {
+        ""
+      },
       network.release(),
       &format!("binaries {} {coin}", network.db()),
       "serai-processor",
@@ -32,24 +41,32 @@ RUN apt install -y ca-certificates
   const RPC_PASS: &str = "seraidex";
   // TODO: Isolate networks
   let hostname = format!("serai-{}-{coin}", network.label());
-  let port = match coin {
+  let port = format!(
-    "bitcoin" => 8332,
+    "{}",
-    "ethereum" => return, // TODO
+    match coin {
-    "monero" => 18081,
+      "bitcoin" => 8332,
-    _ => panic!("unrecognized external network"),
+      "ethereum" => 8545,
-  };
+      "monero" => 18081,
+      _ => panic!("unrecognized external network"),
+    }
+  );
 
-  let env_vars = [
+  let mut env_vars = vec![
     ("MESSAGE_QUEUE_RPC", format!("serai-{}-message-queue", network.label())),
     ("MESSAGE_QUEUE_KEY", hex::encode(coin_key.to_repr())),
     ("ENTROPY", hex::encode(entropy.as_ref())),
     ("NETWORK", coin.to_string()),
     ("NETWORK_RPC_LOGIN", format!("{RPC_USER}:{RPC_PASS}")),
     ("NETWORK_RPC_HOSTNAME", hostname),
-    ("NETWORK_RPC_PORT", format!("{port}")),
+    ("NETWORK_RPC_PORT", port),
     ("DB_PATH", "/volume/processor-db".to_string()),
     ("RUST_LOG", "info,serai_processor=debug".to_string()),
   ];
+  if coin == "ethereum" {
+    env_vars
+      .push(("ETHEREUM_RELAYER_HOSTNAME", format!("serai-{}-ethereum-relayer", network.label())));
+    env_vars.push(("ETHEREUM_RELAYER_PORT", "20830".to_string()));
+  }
   let mut env_vars_str = String::new();
   for (env_var, value) in env_vars {
     env_vars_str += &format!(r#"{env_var}=${{{env_var}:="{value}"}} "#);

orchestration/src/serai.rs

@@ -11,9 +11,9 @@ pub fn serai(
   serai_key: &Zeroizing<<Ristretto as Ciphersuite>::F>,
 ) {
   // Always builds in release for performance reasons
-  let setup = mimalloc(Os::Debian).to_string() + &build_serai_service(true, "", "serai-node");
+  let setup = mimalloc(Os::Debian).to_string() + &build_serai_service("", true, "", "serai-node");
   let setup_fast_epoch =
-    mimalloc(Os::Debian).to_string() + &build_serai_service(true, "fast-epoch", "serai-node");
+    mimalloc(Os::Debian).to_string() + &build_serai_service("", true, "fast-epoch", "serai-node");
 
   let env_vars = [("KEY", hex::encode(serai_key.to_repr()))];
   let mut env_vars_str = String::new();

orchestration/testnet/coins/ethereum-relayer/.folder

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+RPC_USER="${RPC_USER:=serai}"
+RPC_PASS="${RPC_PASS:=seraidex}"
+
+# Run Monero
+monerod --non-interactive --regtest --offline --fixed-difficulty=1 \
+  --no-zmq --rpc-bind-ip=0.0.0.0 --rpc-bind-port=18081 --confirm-external-bind \
+  --rpc-access-control-origins "*" --disable-rpc-ban \
+  --rpc-login=$RPC_USER:$RPC_PASS \
+  $1

patches/parking_lot/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "parking_lot"
+version = "0.11.2"
+description = "parking_lot which patches to the latest update"
+license = "MIT"
+repository = "https://github.com/serai-dex/serai/tree/develop/patches/parking_lot"
+authors = ["Luke Parker <lukeparker5132@gmail.com>"]
+keywords = []
+edition = "2021"
+rust-version = "1.70"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[dependencies]
+parking_lot = "0.12"

patches/parking_lot/src/lib.rs

@@ -0,0 +1 @@
+pub use parking_lot::*;

patches/parking_lot_core/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "parking_lot_core"
+version = "0.8.6"
+description = "parking_lot_core which patches to the latest update"
+license = "MIT"
+repository = "https://github.com/serai-dex/serai/tree/develop/patches/parking_lot_core"
+authors = ["Luke Parker <lukeparker5132@gmail.com>"]
+keywords = []
+edition = "2021"
+rust-version = "1.70"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[dependencies]
+parking_lot_core = "0.9"

patches/parking_lot_core/src/lib.rs

@@ -0,0 +1 @@
+pub use parking_lot_core::*;

processor/Cargo.toml

@@ -45,7 +45,7 @@ frost-schnorrkel = { path = "../crypto/schnorrkel", default-features = false }
 k256 = { version = "^0.13.1", default-features = false, features = ["std"], optional = true }
 
 # Bitcoin
-secp256k1 = { version = "0.28", default-features = false, features = ["std", "global-context", "rand-std"], optional = true }
+secp256k1 = { version = "0.29", default-features = false, features = ["std", "global-context", "rand-std"], optional = true }
 bitcoin-serai = { path = "../coins/bitcoin", default-features = false, features = ["std"], optional = true }
 
 # Ethereum

processor/src/key_gen.rs

@@ -512,6 +512,7 @@ impl<N: Network, D: Db> KeyGen<N, D> {
         ProcessorMessage::GeneratedKeyPair {
           id,
           substrate_key: generated_substrate_key.unwrap().to_bytes(),
+          // TODO: This can be made more efficient since tweaked keys may be a subset of keys
           network_key: generated_network_key.unwrap().to_bytes().as_ref().to_vec(),
         }
       }

processor/src/main.rs

@@ -748,7 +748,15 @@ async fn main() {
     #[cfg(feature = "bitcoin")]
     NetworkId::Bitcoin => run(db, Bitcoin::new(url).await, coordinator).await,
     #[cfg(feature = "ethereum")]
-    NetworkId::Ethereum => run(db.clone(), Ethereum::new(db, url).await, coordinator).await,
+    NetworkId::Ethereum => {
+      let relayer_hostname = env::var("ETHEREUM_RELAYER_HOSTNAME")
+        .expect("ethereum relayer hostname wasn't specified")
+        .to_string();
+      let relayer_port =
+        env::var("ETHEREUM_RELAYER_PORT").expect("ethereum relayer port wasn't specified");
+      let relayer_url = relayer_hostname + ":" + &relayer_port;
+      run(db.clone(), Ethereum::new(db, url, relayer_url).await, coordinator).await
+    }
     #[cfg(feature = "monero")]
     NetworkId::Monero => run(db, Monero::new(url).await, coordinator).await,
     _ => panic!("spawning a processor for an unsupported network"),

processor/src/multisigs/db.rs

@@ -231,7 +231,7 @@ impl ForwardedOutputDb {
     let res = InInstructionWithBalance::decode(&mut outputs_ref).unwrap();
     assert!(outputs_ref.len() < outputs.len());
     if outputs_ref.is_empty() {
-      txn.del(&Self::key(balance));
+      txn.del(Self::key(balance));
     } else {
       Self::set(txn, balance, &outputs);
     }

processor/src/multisigs/mod.rs

@@ -63,9 +63,22 @@ fn instruction_from_output<N: Network>(
     return (presumed_origin, None);
   }
 
-  let Ok(shorthand) = Shorthand::decode(&mut data) else { return (presumed_origin, None) };
+  let shorthand = match Shorthand::decode(&mut data) {
-  let Ok(instruction) = RefundableInInstruction::try_from(shorthand) else {
+    Ok(shorthand) => shorthand,
-    return (presumed_origin, None);
+    Err(e) => {
+      info!("data in output {} wasn't valid shorthand: {e:?}", hex::encode(output.id()));
+      return (presumed_origin, None);
+    }
+  };
+  let instruction = match RefundableInInstruction::try_from(shorthand) {
+    Ok(instruction) => instruction,
+    Err(e) => {
+      info!(
+        "shorthand in output {} wasn't convertible to a RefundableInInstruction: {e:?}",
+        hex::encode(output.id())
+      );
+      return (presumed_origin, None);
+    }
   };
 
   let mut balance = output.balance();

processor/src/multisigs/scanner.rs

@@ -279,6 +279,8 @@ impl<N: Network, D: Db> ScannerHandle<N, D> {
     activation_number: usize,
     key: <N::Curve as Ciphersuite>::G,
   ) {
+    info!("Registering key {} in scanner at {activation_number}", hex::encode(key.to_bytes()));
+
     let mut scanner_lock = self.scanner.write().await;
     let scanner = scanner_lock.as_mut().unwrap();
     assert!(
@@ -286,8 +288,6 @@ impl<N: Network, D: Db> ScannerHandle<N, D> {
       "activation block of new keys was already scanned",
     );
 
-    info!("Registering key {} in scanner at {activation_number}", hex::encode(key.to_bytes()));
-
     if scanner.keys.is_empty() {
       assert!(scanner.ram_scanned.is_none());
       scanner.ram_scanned = Some(activation_number);

processor/src/multisigs/scheduler/smart_contract.rs

@@ -116,7 +116,7 @@ impl<N: Network<Scheduler = Self>> SchedulerTrait<N> for Scheduler<N> {
       assert!(self.coins.contains(&utxo.balance().coin));
     }
 
-    let mut nonce = LastNonce::get(txn).map_or(1, |nonce| nonce + 1);
+    let mut nonce = LastNonce::get(txn).unwrap_or(1);
     let mut plans = vec![];
     for chunk in payments.as_slice().chunks(N::MAX_OUTPUTS) {
       // Once we rotate, all further payments should be scheduled via the new multisig

processor/src/multisigs/scheduler/utxo.rs

@@ -432,7 +432,7 @@ impl<N: UtxoNetwork<Scheduler = Self>> Scheduler<N> {
     }
 
     // If there's a UTXO to restore, restore it
-    // This is down now as if there is a to_restore output, and it was inserted into self.utxos
+    // This is done now as if there is a to_restore output, and it was inserted into self.utxos
     // earlier, self.utxos.len() may become `N::MAX_INPUTS + 1`
     // The prior block requires the len to be `<= N::MAX_INPUTS`
     if let Some(to_restore) = to_restore {
@@ -442,9 +442,10 @@ impl<N: UtxoNetwork<Scheduler = Self>> Scheduler<N> {
     txn.put(scheduler_key::<D, _>(&self.key), self.serialize());
 
     log::info!(
-      "created {} plans containing {} payments to sign",
+      "created {} plans containing {} payments to sign, with {} payments pending scheduling",
       plans.len(),
       payments_at_start - self.payments.len(),
+      self.payments.len(),
     );
     plans
   }
@@ -589,7 +590,8 @@ impl<N: UtxoNetwork<Scheduler = Self>> SchedulerTrait<N> for Scheduler<N> {
     output: N::Output,
     refund_to: N::Address,
   ) -> Plan<N> {
-    Plan {
+    let output_id = output.id().as_ref().to_vec();
+    let res = Plan {
       key: output.key(),
       // Uses a payment as this will still be successfully sent due to fee amortization,
       // and because change is currently always a Serai key
@@ -597,7 +599,9 @@ impl<N: UtxoNetwork<Scheduler = Self>> SchedulerTrait<N> for Scheduler<N> {
       inputs: vec![output],
       change: None,
       scheduler_addendum: (),
-    }
+    };
+    log::info!("refund plan for {} has ID {}", hex::encode(output_id), hex::encode(res.id()));
+    res
   }
 
   fn shim_forward_plan(output: N::Output, to: <N::Curve as Ciphersuite>::G) -> Option<Plan<N>> {

processor/src/networks/bitcoin.rs

@@ -20,12 +20,11 @@ use bitcoin_serai::{
     key::{Parity, XOnlyPublicKey},
     consensus::{Encodable, Decodable},
     script::Instruction,
-    address::{NetworkChecked, Address as BAddress},
+    Transaction, Block, ScriptBuf,
-    Transaction, Block, Network as BNetwork, ScriptBuf,
     opcodes::all::{OP_SHA256, OP_EQUALVERIFY},
   },
   wallet::{
-    tweak_keys, address_payload, ReceivedOutput, Scanner, TransactionError,
+    tweak_keys, p2tr_script_buf, ReceivedOutput, Scanner, TransactionError,
     SignableTransaction as BSignableTransaction, TransactionMachine,
   },
   rpc::{RpcError, Rpc},
@@ -175,7 +174,7 @@ pub struct Fee(u64);
 impl TransactionTrait<Bitcoin> for Transaction {
   type Id = [u8; 32];
   fn id(&self) -> Self::Id {
-    let mut hash = *self.txid().as_raw_hash().as_byte_array();
+    let mut hash = *self.compute_txid().as_raw_hash().as_byte_array();
     hash.reverse();
     hash
   }
@@ -243,7 +242,8 @@ impl EventualityTrait for Eventuality {
     buf
   }
   fn read_completion<R: io::Read>(reader: &mut R) -> io::Result<Transaction> {
-    Transaction::consensus_decode(reader).map_err(|e| io::Error::other(format!("{e}")))
+    Transaction::consensus_decode(&mut io::BufReader::with_capacity(0, reader))
+      .map_err(|e| io::Error::other(format!("{e}")))
   }
 }
 
@@ -453,7 +453,7 @@ impl Bitcoin {
     match BSignableTransaction::new(
       inputs.iter().map(|input| input.output.clone()).collect(),
       &payments,
-      change.as_ref().map(AsRef::as_ref),
+      change.clone().map(Into::into),
       None,
       fee.0,
     ) {
@@ -534,12 +534,14 @@ impl Bitcoin {
     input_index: usize,
     private_key: &PrivateKey,
   ) -> ScriptBuf {
+    use bitcoin_serai::bitcoin::{Network as BNetwork, Address as BAddress};
+
     let public_key = PublicKey::from_private_key(SECP256K1, private_key);
-    let main_addr = BAddress::p2pkh(&public_key, BNetwork::Regtest);
+    let main_addr = BAddress::p2pkh(public_key, BNetwork::Regtest);
 
     let mut der = SECP256K1
       .sign_ecdsa_low_r(
-        &Message::from(
+        &Message::from_digest_slice(
           SighashCache::new(tx)
             .legacy_signature_hash(
               input_index,
@@ -547,8 +549,10 @@ impl Bitcoin {
               EcdsaSighashType::All.to_u32(),
             )
             .unwrap()
-            .to_raw_hash(),
+            .to_raw_hash()
-        ),
+            .as_ref(),
+        )
+        .unwrap(),
         &private_key.inner,
       )
       .serialize_der()
@@ -577,8 +581,10 @@ const MAX_INPUTS: usize = 520;
 const MAX_OUTPUTS: usize = 520;
 
 fn address_from_key(key: ProjectivePoint) -> Address {
-  Address::new(BAddress::<NetworkChecked>::new(BNetwork::Bitcoin, address_payload(key).unwrap()))
+  Address::new(
-    .unwrap()
+    p2tr_script_buf(key).expect("creating address from key which isn't properly tweaked"),
+  )
+  .expect("couldn't create Serai-representable address for P2TR script")
 }
 
 #[async_trait]
@@ -724,9 +730,7 @@ impl Network for Bitcoin {
           }
           tx.unwrap().output.swap_remove(usize::try_from(input.previous_output.vout).unwrap())
         };
-        BAddress::from_script(&spent_output.script_pubkey, BNetwork::Bitcoin)
+        Address::new(spent_output.script_pubkey)
-          .ok()
-          .and_then(Address::new)
       };
       let data = Self::extract_serai_data(tx);
       for output in &mut outputs {
@@ -858,7 +862,7 @@ impl Network for Bitcoin {
       Err(RpcError::ConnectionError) => Err(NetworkError::ConnectionError)?,
       // TODO: Distinguish already in pool vs double spend (other signing attempt succeeded) vs
       // invalid transaction
-      Err(e) => panic!("failed to publish TX {}: {e}", tx.txid()),
+      Err(e) => panic!("failed to publish TX {}: {e}", tx.compute_txid()),
     }
     Ok(())
   }
@@ -894,6 +898,8 @@ impl Network for Bitcoin {
 
   #[cfg(test)]
   async fn mine_block(&self) {
+    use bitcoin_serai::bitcoin::{Network as BNetwork, Address as BAddress};
+
     self
       .rpc
       .rpc_call::<Vec<String>>(
@@ -906,10 +912,12 @@ impl Network for Bitcoin {
 
   #[cfg(test)]
   async fn test_send(&self, address: Address) -> Block {
+    use bitcoin_serai::bitcoin::{Network as BNetwork, Address as BAddress};
+
     let secret_key = SecretKey::new(&mut rand_core::OsRng);
     let private_key = PrivateKey::new(secret_key, BNetwork::Regtest);
     let public_key = PublicKey::from_private_key(SECP256K1, &private_key);
-    let main_addr = BAddress::p2pkh(&public_key, BNetwork::Regtest);
+    let main_addr = BAddress::p2pkh(public_key, BNetwork::Regtest);
 
     let new_block = self.get_latest_block_number().await.unwrap() + 1;
     self
@@ -923,14 +931,14 @@ impl Network for Bitcoin {
       version: Version(2),
       lock_time: LockTime::ZERO,
       input: vec![TxIn {
-        previous_output: OutPoint { txid: tx.txid(), vout: 0 },
+        previous_output: OutPoint { txid: tx.compute_txid(), vout: 0 },
         script_sig: Script::new().into(),
         sequence: Sequence(u32::MAX),
         witness: Witness::default(),
       }],
       output: vec![TxOut {
         value: tx.output[0].value - BAmount::from_sat(10000),
-        script_pubkey: address.as_ref().script_pubkey(),
+        script_pubkey: address.clone().into(),
       }],
     };
     tx.input[0].script_sig = Self::sign_btc_input_for_p2pkh(&tx, 0, &private_key);

processor/src/networks/ethereum.rs

@@ -13,7 +13,7 @@ use frost::ThresholdKeys;
 use ethereum_serai::{
   alloy::{
     primitives::U256,
-    rpc_types::{BlockNumberOrTag, Transaction},
+    rpc_types::{BlockTransactionsKind, BlockNumberOrTag, Transaction},
     simple_request_transport::SimpleRequest,
     rpc_client::ClientBuilder,
     provider::{Provider, RootProvider},
@@ -31,6 +31,11 @@ use tokio::{
   time::sleep,
   sync::{RwLock, RwLockReadGuard},
 };
+#[cfg(not(test))]
+use tokio::{
+  io::{AsyncReadExt, AsyncWriteExt},
+  net::TcpStream,
+};
 
 use serai_client::{
   primitives::{Coin, Amount, Balance, NetworkId},
@@ -290,6 +295,8 @@ pub struct Ethereum<D: Db> {
   // address. Accordingly, all methods present are consistent to a Serai chain with a finalized
   // first key (regardless of local state), and this is safe.
   db: D,
+  #[cfg_attr(test, allow(unused))]
+  relayer_url: String,
   provider: Arc<RootProvider<SimpleRequest>>,
   deployer: Deployer,
   router: Arc<RwLock<Option<Router>>>,
@@ -309,9 +316,9 @@ impl<D: Db> fmt::Debug for Ethereum<D> {
   }
 }
 impl<D: Db> Ethereum<D> {
-  pub async fn new(db: D, url: String) -> Self {
+  pub async fn new(db: D, daemon_url: String, relayer_url: String) -> Self {
     let provider = Arc::new(RootProvider::new(
-      ClientBuilder::default().transport(SimpleRequest::new(url), true),
+      ClientBuilder::default().transport(SimpleRequest::new(daemon_url), true),
     ));
 
     let mut deployer = Deployer::new(provider.clone()).await;
@@ -322,7 +329,9 @@ impl<D: Db> Ethereum<D> {
     }
     let deployer = deployer.unwrap().unwrap();
 
-    Ethereum { db, provider, deployer, router: Arc::new(RwLock::new(None)) }
+    dbg!(&relayer_url);
+    dbg!(relayer_url.len());
+    Ethereum { db, relayer_url, provider, deployer, router: Arc::new(RwLock::new(None)) }
   }
 
   // Obtain a reference to the Router, sleeping until it's deployed if it hasn't already been.
@@ -423,10 +432,10 @@ impl<D: Db> Network for Ethereum<D> {
   async fn get_latest_block_number(&self) -> Result<usize, NetworkError> {
     let actual_number = self
       .provider
-      .get_block(BlockNumberOrTag::Finalized.into(), false)
+      .get_block(BlockNumberOrTag::Finalized.into(), BlockTransactionsKind::Hashes)
       .await
       .map_err(|_| NetworkError::ConnectionError)?
-      .expect("no blocks were finalized")
+      .ok_or(NetworkError::ConnectionError)?
       .header
       .number
       .unwrap();
@@ -451,7 +460,7 @@ impl<D: Db> Network for Ethereum<D> {
     } else {
       self
         .provider
-        .get_block(u64::try_from(start - 1).unwrap().into(), false)
+        .get_block(u64::try_from(start - 1).unwrap().into(), BlockTransactionsKind::Hashes)
         .await
         .ok()
         .flatten()
@@ -464,7 +473,7 @@ impl<D: Db> Network for Ethereum<D> {
 
     let end_header = self
       .provider
-      .get_block(u64::try_from(start + 31).unwrap().into(), false)
+      .get_block(u64::try_from(start + 31).unwrap().into(), BlockTransactionsKind::Hashes)
       .await
       .ok()
       .flatten()
@@ -714,8 +723,32 @@ impl<D: Db> Network for Ethereum<D> {
     // Publish this to the dedicated TX server for a solver to actually publish
     #[cfg(not(test))]
     {
-      let _ = completion;
+      let mut msg = vec![];
-      todo!("TODO");
+      match completion.command() {
+        RouterCommand::UpdateSeraiKey { nonce, .. } | RouterCommand::Execute { nonce, .. } => {
+          msg.extend(&u32::try_from(nonce).unwrap().to_le_bytes());
+        }
+      }
+      completion.write(&mut msg).unwrap();
+
+      let Ok(mut socket) = TcpStream::connect(&self.relayer_url).await else {
+        log::warn!("couldn't connect to the relayer server");
+        Err(NetworkError::ConnectionError)?
+      };
+      let Ok(()) = socket.write_all(&u32::try_from(msg.len()).unwrap().to_le_bytes()).await else {
+        log::warn!("couldn't send the message's len to the relayer server");
+        Err(NetworkError::ConnectionError)?
+      };
+      let Ok(()) = socket.write_all(&msg).await else {
+        log::warn!("couldn't write the message to the relayer server");
+        Err(NetworkError::ConnectionError)?
+      };
+      if socket.read_u8().await.ok() != Some(1) {
+        log::warn!("didn't get the ack from the relayer server");
+        Err(NetworkError::ConnectionError)?;
+      }
+
+      Ok(())
     }
 
     // Publish this using a dummy account we fund with magic RPC commands
@@ -774,7 +807,7 @@ impl<D: Db> Network for Ethereum<D> {
   async fn get_block_number(&self, id: &<Self::Block as Block<Self>>::Id) -> usize {
     self
       .provider
-      .get_block(B256::from(*id).into(), false)
+      .get_block(B256::from(*id).into(), BlockTransactionsKind::Hashes)
       .await
       .unwrap()
       .unwrap()

processor/src/tests/literal/mod.rs

@@ -70,7 +70,7 @@ mod bitcoin {
       // btc key pair to send from
       let private_key = PrivateKey::new(SecretKey::new(&mut rand_core::OsRng), BNetwork::Regtest);
       let public_key = PublicKey::from_private_key(SECP256K1, &private_key);
-      let main_addr = BAddress::p2pkh(&public_key, BNetwork::Regtest);
+      let main_addr = BAddress::p2pkh(public_key, BNetwork::Regtest);
 
       // get unlocked coins
       let new_block = btc.get_latest_block_number().await.unwrap() + 1;
@@ -107,7 +107,7 @@ mod bitcoin {
         version: Version(2),
         lock_time: LockTime::ZERO,
         input: vec![TxIn {
-          previous_output: OutPoint { txid: tx.txid(), vout: 0 },
+          previous_output: OutPoint { txid: tx.compute_txid(), vout: 0 },
           script_sig: Script::new().into(),
           sequence: Sequence(u32::MAX),
           witness: Witness::default(),
@@ -128,14 +128,14 @@ mod bitcoin {
         version: Version(2),
         lock_time: LockTime::ZERO,
         input: vec![TxIn {
-          previous_output: OutPoint { txid: tx.txid(), vout: 0 },
+          previous_output: OutPoint { txid: tx.compute_txid(), vout: 0 },
           script_sig: Script::new().into(),
           sequence: Sequence(u32::MAX),
           witness: Witness::new(),
         }],
         output: vec![TxOut {
           value: tx.output[0].value - BAmount::from_sat(10000),
-          script_pubkey: serai_btc_address.as_ref().script_pubkey(),
+          script_pubkey: serai_btc_address.into(),
         }],
       };
 
@@ -143,12 +143,14 @@ mod bitcoin {
       // This is the standard script with an extra argument of the InInstruction
       let mut sig = SECP256K1
         .sign_ecdsa_low_r(
-          &Message::from(
+          &Message::from_digest_slice(
             SighashCache::new(&tx)
               .p2wsh_signature_hash(0, &script, initial_output_value, EcdsaSighashType::All)
               .unwrap()
-              .to_raw_hash(),
+              .to_raw_hash()
-          ),
+              .as_ref(),
+          )
+          .unwrap(),
           &private_key.inner,
         )
         .serialize_der()
@@ -421,7 +423,7 @@ mod ethereum {
           });
         }
 
-        Ethereum::new(db, url.clone()).await
+        Ethereum::new(db, url.clone(), String::new()).await
       })
     }
   }

processor/src/tests/scanner.rs

@@ -115,6 +115,12 @@ pub async fn test_scanner<N: Network>(
 pub async fn test_no_deadlock_in_multisig_completed<N: Network>(
   new_network: impl Fn(MemDb) -> Pin<Box<dyn Send + Future<Output = N>>>,
 ) {
+  // This test scans two blocks then acknowledges one, yet a network with one confirm won't scan
+  // two blocks before the first is acknowledged (due to the look-ahead limit)
+  if N::CONFIRMATIONS <= 1 {
+    return;
+  }
+
   let mut db = MemDb::new();
   let network = new_network(db.clone()).await;
 
@@ -139,6 +145,10 @@ pub async fn test_no_deadlock_in_multisig_completed<N: Network>(
         let mut txn = db.txn();
         NetworkKeyDb::set(&mut txn, Session(0), &key.to_bytes().as_ref().to_vec());
         txn.commit();
+
+        // Sleep for 5 seconds as setting the Network key value will trigger an async task for
+        // Ethereum
+        tokio::time::sleep(Duration::from_secs(5)).await;
       }
       key
     };
@@ -158,6 +168,7 @@ pub async fn test_no_deadlock_in_multisig_completed<N: Network>(
     network.mine_block().await;
   }
 
+  // Block for the second set of keys registered
   let block_id =
     match timeout(Duration::from_secs(30), scanner.events.recv()).await.unwrap().unwrap() {
       ScannerEvent::Block { is_retirement_block, block, outputs: _ } => {
@@ -170,6 +181,7 @@ pub async fn test_no_deadlock_in_multisig_completed<N: Network>(
       }
     };
 
+  // Block for the third set of keys registered
   match timeout(Duration::from_secs(30), scanner.events.recv()).await.unwrap().unwrap() {
     ScannerEvent::Block { .. } => {}
     ScannerEvent::Completed(_, _, _, _, _) => {

rust-toolchain.toml

@@ -1,5 +1,5 @@
 [toolchain]
-channel = "1.77"
+channel = "1.79"
 targets = ["wasm32-unknown-unknown"]
 profile = "minimal"
 components = ["rust-src", "rustfmt", "clippy"]

substrate/abi/Cargo.toml

@@ -16,28 +16,50 @@ rustdoc-args = ["--cfg", "docsrs"]
 workspace = true
 
 [dependencies]
-scale = { package = "parity-scale-codec", version = "3", features = ["derive"] }
+scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
-scale-info = { version = "2", features = ["derive"] }
+scale-info = { version = "2", default-features = false, features = ["derive"] }
 
-borsh = { version = "1", features = ["derive", "de_strict_order"], optional = true }
+borsh = { version = "1", default-features = false, features = ["derive", "de_strict_order"], optional = true }
-serde = { version = "1", features = ["derive", "alloc"], optional = true }
+serde = { version = "1", default-features = false, features = ["derive", "alloc"], optional = true }
 
-sp-core = { git = "https://github.com/serai-dex/substrate" }
+sp-core = { git = "https://github.com/serai-dex/substrate", default-features = false }
-sp-runtime = { git = "https://github.com/serai-dex/substrate" }
+sp-runtime = { git = "https://github.com/serai-dex/substrate", default-features = false }
 
-sp-consensus-babe = { git = "https://github.com/serai-dex/substrate" }
+sp-consensus-babe = { git = "https://github.com/serai-dex/substrate", default-features = false }
-sp-consensus-grandpa = { git = "https://github.com/serai-dex/substrate" }
+sp-consensus-grandpa = { git = "https://github.com/serai-dex/substrate", default-features = false }
 
-serai-primitives = { path = "../primitives", version = "0.1" }
+frame-support = { git = "https://github.com/serai-dex/substrate", default-features = false }
-serai-coins-primitives = { path = "../coins/primitives", version = "0.1" }
+
-serai-validator-sets-primitives = { path = "../validator-sets/primitives", version = "0.1" }
+serai-primitives = { path = "../primitives", version = "0.1", default-features = false }
+serai-coins-primitives = { path = "../coins/primitives", version = "0.1", default-features = false }
+serai-validator-sets-primitives = { path = "../validator-sets/primitives", version = "0.1", default-features = false }
 serai-genesis-liquidity-primitives = { path = "../genesis-liquidity/primitives", version = "0.1" }
-serai-in-instructions-primitives = { path = "../in-instructions/primitives", version = "0.1" }
+serai-in-instructions-primitives = { path = "../in-instructions/primitives", version = "0.1", default-features = false }
-serai-signals-primitives = { path = "../signals/primitives", version = "0.1" }
+serai-signals-primitives = { path = "../signals/primitives", version = "0.1", default-features = false }
-
-frame-support = { git = "https://github.com/serai-dex/substrate" }
 
 [features]
+std = [
+  "scale/std",
+  "scale-info/std",
+
+  "borsh?/std",
+  "serde?/std",
+
+  "sp-core/std",
+  "sp-runtime/std",
+
+  "sp-consensus-babe/std",
+  "sp-consensus-grandpa/std",
+
+  "frame-support/std",
+
+  "serai-primitives/std",
+  "serai-coins-primitives/std",
+  "serai-validator-sets-primitives/std",
+  "serai-genesis-liquidity-primitives/std",
+  "serai-in-instructions-primitives/std",
+  "serai-signals-primitives/std",
+]
 borsh = [
   "dep:borsh",
   "serai-primitives/borsh",
@@ -56,3 +78,4 @@ serde = [
   "serai-in-instructions-primitives/serde",
   "serai-signals-primitives/serde",
 ]
+default = ["std"]

substrate/abi/src/babe.rs

@@ -4,7 +4,7 @@ use serai_primitives::{Header, SeraiAddress};
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 pub struct ReportEquivocation {
-  pub equivocation_proof: Box<EquivocationProof<Header>>,
+  pub equivocation_proof: alloc::boxed::Box<EquivocationProof<Header>>,
   pub key_owner_proof: SeraiAddress,
 }
 

substrate/abi/src/coins.rs

@@ -5,7 +5,8 @@ use primitives::OutInstructionWithBalance;
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 #[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize, borsh::BorshDeserialize))]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Call {
   transfer { to: SeraiAddress, balance: Balance },
   burn { balance: Balance },
@@ -14,7 +15,17 @@ pub enum Call {
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 #[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize, borsh::BorshDeserialize))]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
+pub enum LiquidityTokensCall {
+  transfer { to: SeraiAddress, balance: Balance },
+  burn { balance: Balance },
+}
+
+#[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
+#[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize, borsh::BorshDeserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Event {
   Mint { to: SeraiAddress, balance: Balance },
   Burn { from: SeraiAddress, balance: Balance },

substrate/abi/src/dex.rs

@@ -6,7 +6,8 @@ type PoolId = Coin;
 type MaxSwapPathLength = sp_core::ConstU32<3>;
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Call {
   add_liquidity {
     coin: Coin,
@@ -38,7 +39,8 @@ pub enum Call {
 }
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Event {
   PoolCreated {
     pool_id: PoolId,

substrate/abi/src/grandpa.rs

@@ -4,7 +4,7 @@ use serai_primitives::{BlockNumber, SeraiAddress};
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 pub struct ReportEquivocation {
-  pub equivocation_proof: Box<EquivocationProof<[u8; 32], BlockNumber>>,
+  pub equivocation_proof: alloc::boxed::Box<EquivocationProof<[u8; 32], BlockNumber>>,
   pub key_owner_proof: SeraiAddress,
 }
 
@@ -15,10 +15,10 @@ pub enum Call {
 }
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
-#[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize, borsh::BorshDeserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Event {
-  NewAuthorities { authority_set: Vec<(SeraiAddress, u64)> },
+  NewAuthorities { authority_set: alloc::vec::Vec<(SeraiAddress, u64)> },
   // TODO: Remove these
   Paused,
   Resumed,

substrate/abi/src/in_instructions.rs

@@ -5,14 +5,16 @@ use primitives::SignedBatch;
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 #[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize, borsh::BorshDeserialize))]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Call {
   execute_batch { batch: SignedBatch },
 }
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 #[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize, borsh::BorshDeserialize))]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Event {
   Batch { network: NetworkId, id: u32, block: BlockHash, instructions_hash: [u8; 32] },
   InstructionFailure { network: NetworkId, id: u32, index: u32 },

substrate/abi/src/lib.rs

@@ -1,5 +1,12 @@
+#![cfg_attr(docsrs, feature(doc_cfg))]
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![cfg_attr(not(feature = "std"), no_std)]
 #![allow(non_camel_case_types)]
 
+extern crate alloc;
+
+pub use serai_primitives as primitives;
+
 pub mod system;
 
 pub mod timestamp;
@@ -16,15 +23,13 @@ pub mod genesis_liquidity;
 pub mod babe;
 pub mod grandpa;
 
-pub use serai_primitives as primitives;
+pub mod tx;
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 pub enum Call {
-  System,
   Timestamp(timestamp::Call),
-  TransactionPayment,
   Coins(coins::Call),
-  LiquidityTokens(coins::Call),
+  LiquidityTokens(coins::LiquidityTokensCall),
   Dex(dex::Call),
   GenesisLiquidity(genesis_liquidity::Call),
   ValidatorSets(validator_sets::Call),
@@ -57,16 +62,20 @@ pub enum Event {
 }
 
 #[derive(Clone, Copy, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub struct Extra {
   pub era: sp_runtime::generic::Era,
-  pub nonce: scale::Compact<u32>,
+  #[codec(compact)]
-  pub tip: scale::Compact<u64>,
+  pub nonce: u32,
+  #[codec(compact)]
+  pub tip: u64,
 }
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 #[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize, borsh::BorshDeserialize))]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub struct SignedPayloadExtra {
   pub spec_version: u32,
   pub tx_version: u32,
@@ -74,4 +83,4 @@ pub struct SignedPayloadExtra {
   pub mortality_checkpoint: [u8; 32],
 }
 
-pub type Transaction = primitives::Transaction<Call, Extra>;
+pub type Transaction = tx::Transaction<Call, Extra>;

substrate/abi/src/signals.rs

@@ -7,7 +7,8 @@ use primitives::SignalId;
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 #[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize, borsh::BorshDeserialize))]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Call {
   register_retirement_signal { in_favor_of: [u8; 32] },
   revoke_retirement_signal { retirement_signal_id: [u8; 32] },
@@ -18,7 +19,8 @@ pub enum Call {
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 #[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize, borsh::BorshDeserialize))]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Event {
   RetirementSignalRegistered {
     signal_id: [u8; 32],

substrate/abi/src/system.rs

@@ -3,7 +3,6 @@ use frame_support::dispatch::{DispatchInfo, DispatchError};
 use serai_primitives::SeraiAddress;
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum Event {
   ExtrinsicSuccess { dispatch_info: DispatchInfo },
   ExtrinsicFailed { dispatch_error: DispatchError, dispatch_info: DispatchInfo },

substrate/abi/src/timestamp.rs

@@ -1,5 +1,9 @@
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Call {
-  set { now: scale::Compact<u64> },
+  set {
+    #[codec(compact)]
+    now: u64,
+  },
 }

substrate/abi/src/tx.rs

@@ -0,0 +1,183 @@
+use scale::Encode;
+
+use sp_core::sr25519::{Public, Signature};
+use sp_runtime::traits::Verify;
+
+use serai_primitives::SeraiAddress;
+
+use frame_support::dispatch::GetDispatchInfo;
+
+pub trait TransactionMember:
+  Clone + PartialEq + Eq + core::fmt::Debug + scale::Encode + scale::Decode + scale_info::TypeInfo
+{
+}
+impl<
+    T: Clone
+      + PartialEq
+      + Eq
+      + core::fmt::Debug
+      + scale::Encode
+      + scale::Decode
+      + scale_info::TypeInfo,
+  > TransactionMember for T
+{
+}
+
+type TransactionEncodeAs<'a, Extra> =
+  (&'a crate::Call, &'a Option<(SeraiAddress, Signature, Extra)>);
+type TransactionDecodeAs<Extra> = (crate::Call, Option<(SeraiAddress, Signature, Extra)>);
+
+// We use our own Transaction struct, over UncheckedExtrinsic, for more control, a bit more
+// simplicity, and in order to be immune to https://github.com/paritytech/polkadot-sdk/issues/2947
+#[allow(private_bounds)]
+#[derive(Clone, PartialEq, Eq, Debug)]
+pub struct Transaction<
+  Call: 'static + TransactionMember + From<crate::Call>,
+  Extra: 'static + TransactionMember,
+> {
+  call: crate::Call,
+  mapped_call: Call,
+  signature: Option<(SeraiAddress, Signature, Extra)>,
+}
+
+impl<Call: 'static + TransactionMember + From<crate::Call>, Extra: 'static + TransactionMember>
+  Transaction<Call, Extra>
+{
+  pub fn new(call: crate::Call, signature: Option<(SeraiAddress, Signature, Extra)>) -> Self {
+    Self { call: call.clone(), mapped_call: call.into(), signature }
+  }
+
+  pub fn call(&self) -> &crate::Call {
+    &self.call
+  }
+}
+
+impl<Call: 'static + TransactionMember + From<crate::Call>, Extra: 'static + TransactionMember>
+  scale::Encode for Transaction<Call, Extra>
+{
+  fn using_encoded<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R {
+    let tx: TransactionEncodeAs<Extra> = (&self.call, &self.signature);
+    tx.using_encoded(f)
+  }
+}
+impl<Call: 'static + TransactionMember + From<crate::Call>, Extra: 'static + TransactionMember>
+  scale::Decode for Transaction<Call, Extra>
+{
+  fn decode<I: scale::Input>(input: &mut I) -> Result<Self, scale::Error> {
+    let (call, signature) = TransactionDecodeAs::decode(input)?;
+    let mapped_call = Call::from(call.clone());
+    Ok(Self { call, mapped_call, signature })
+  }
+}
+impl<Call: 'static + TransactionMember + From<crate::Call>, Extra: 'static + TransactionMember>
+  scale_info::TypeInfo for Transaction<Call, Extra>
+{
+  type Identity = TransactionDecodeAs<Extra>;
+
+  // Define the type info as the info of the type equivalent to what we encode as
+  fn type_info() -> scale_info::Type {
+    TransactionDecodeAs::<Extra>::type_info()
+  }
+}
+
+#[cfg(feature = "serde")]
+mod _serde {
+  use scale::Encode;
+  use serde::{ser::*, de::*};
+  use super::*;
+  impl<Call: 'static + TransactionMember + From<crate::Call>, Extra: 'static + TransactionMember>
+    Serialize for Transaction<Call, Extra>
+  {
+    fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
+      let encoded = self.encode();
+      serializer.serialize_bytes(&encoded)
+    }
+  }
+  #[cfg(feature = "std")]
+  impl<
+      'a,
+      Call: 'static + TransactionMember + From<crate::Call>,
+      Extra: 'static + TransactionMember,
+    > Deserialize<'a> for Transaction<Call, Extra>
+  {
+    fn deserialize<D: Deserializer<'a>>(de: D) -> Result<Self, D::Error> {
+      let bytes = sp_core::bytes::deserialize(de)?;
+      <Self as scale::Decode>::decode(&mut &bytes[..])
+        .map_err(|e| serde::de::Error::custom(format!("invalid transaction: {e}")))
+    }
+  }
+}
+
+impl<
+    Call: 'static + TransactionMember + From<crate::Call> + TryInto<crate::Call>,
+    Extra: 'static + TransactionMember,
+  > sp_runtime::traits::Extrinsic for Transaction<Call, Extra>
+{
+  type Call = Call;
+  type SignaturePayload = (SeraiAddress, Signature, Extra);
+  fn is_signed(&self) -> Option<bool> {
+    Some(self.signature.is_some())
+  }
+  fn new(call: Call, signature: Option<Self::SignaturePayload>) -> Option<Self> {
+    Some(Self { call: call.clone().try_into().ok()?, mapped_call: call, signature })
+  }
+}
+
+impl<
+    Call: 'static + TransactionMember + From<crate::Call> + TryInto<crate::Call>,
+    Extra: 'static + TransactionMember,
+  > frame_support::traits::ExtrinsicCall for Transaction<Call, Extra>
+{
+  fn call(&self) -> &Call {
+    &self.mapped_call
+  }
+}
+
+impl<
+    Call: 'static + TransactionMember + From<crate::Call>,
+    Extra: 'static + TransactionMember + sp_runtime::traits::SignedExtension,
+  > sp_runtime::traits::ExtrinsicMetadata for Transaction<Call, Extra>
+{
+  type SignedExtensions = Extra;
+
+  const VERSION: u8 = 0;
+}
+
+impl<
+    Call: 'static + TransactionMember + From<crate::Call> + GetDispatchInfo,
+    Extra: 'static + TransactionMember,
+  > GetDispatchInfo for Transaction<Call, Extra>
+{
+  fn get_dispatch_info(&self) -> frame_support::dispatch::DispatchInfo {
+    self.mapped_call.get_dispatch_info()
+  }
+}
+
+impl<
+    Call: 'static + TransactionMember + From<crate::Call>,
+    Extra: 'static + TransactionMember + sp_runtime::traits::SignedExtension,
+  > sp_runtime::traits::BlindCheckable for Transaction<Call, Extra>
+{
+  type Checked = sp_runtime::generic::CheckedExtrinsic<Public, Call, Extra>;
+
+  fn check(
+    self,
+  ) -> Result<Self::Checked, sp_runtime::transaction_validity::TransactionValidityError> {
+    Ok(match self.signature {
+      Some((signer, signature, extra)) => {
+        if !signature.verify(
+          (&self.call, &extra, extra.additional_signed()?).encode().as_slice(),
+          &signer.into(),
+        ) {
+          Err(sp_runtime::transaction_validity::InvalidTransaction::BadProof)?
+        }
+
+        sp_runtime::generic::CheckedExtrinsic {
+          signed: Some((signer.into(), extra)),
+          function: self.mapped_call,
+        }
+      }
+      None => sp_runtime::generic::CheckedExtrinsic { signed: None, function: self.mapped_call },
+    })
+  }
+}

substrate/abi/src/validator_sets.rs

@@ -1,4 +1,4 @@
-use sp_core::{ConstU32, bounded_vec::BoundedVec};
+use sp_core::{ConstU32, bounded::BoundedVec};
 
 pub use serai_validator_sets_primitives as primitives;
 
@@ -6,11 +6,12 @@ use serai_primitives::*;
 use serai_validator_sets_primitives::*;
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Call {
   set_keys {
     network: NetworkId,
-    removed_participants: Vec<SeraiAddress>,
+    removed_participants: BoundedVec<SeraiAddress, ConstU32<{ MAX_KEY_SHARES_PER_SET / 3 }>>,
     key_pair: KeyPair,
     signature: Signature,
   },
@@ -35,7 +36,8 @@ pub enum Call {
 
 #[derive(Clone, PartialEq, Eq, Debug, scale::Encode, scale::Decode, scale_info::TypeInfo)]
 #[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize, borsh::BorshDeserialize))]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize))]
+#[cfg_attr(all(feature = "std", feature = "serde"), derive(serde::Deserialize))]
 pub enum Event {
   NewSet {
     set: ValidatorSet,

substrate/client/Cargo.toml

@@ -36,7 +36,7 @@ async-lock = "3"
 
 simple-request = { path = "../../common/request", version = "0.1", optional = true }
 
-bitcoin = { version = "0.31", optional = true }
+bitcoin = { version = "0.32", optional = true }
 
 ciphersuite = { path = "../../crypto/ciphersuite", version = "0.4", optional = true }
 monero-serai = { path = "../../coins/monero", version = "0.1.4-alpha", optional = true }