Get all processors to compile again

Requires splitting `serai-cosign` into `serai-cosign` and `serai-cosign-types`
so the processor don't require `serai-client/serai` (not correct yet).

.github/workflows/tests.yml

@@ -61,6 +61,7 @@ jobs:
             -p serai-monero-processor \
             -p tendermint-machine \
             -p tributary-sdk \
+            -p serai-cosign-types \
             -p serai-cosign \
             -p serai-coordinator-substrate \
             -p serai-coordinator-tributary \

Cargo.lock

@@ -9706,7 +9706,6 @@ dependencies = [
  "hex",
  "log",
  "modular-frost",
- "parity-scale-codec",
  "rand_core 0.6.4",
  "secp256k1 0.29.1",
  "serai-client",
@@ -9896,11 +9895,21 @@ dependencies = [
  "parity-scale-codec",
  "schnorrkel",
  "serai-client",
+ "serai-cosign-types",
  "serai-db",
  "serai-task",
  "tokio",
 ]
 
+[[package]]
+name = "serai-cosign-types"
+version = "0.1.0"
+dependencies = [
+ "borsh",
+ "schnorrkel",
+ "serai-primitives",
+]
+
 [[package]]
 name = "serai-db"
 version = "0.1.1"
@@ -9999,7 +10008,6 @@ dependencies = [
  "k256",
  "log",
  "modular-frost",
- "parity-scale-codec",
  "rand_core 0.6.4",
  "serai-client",
  "serai-db",
@@ -10136,7 +10144,6 @@ dependencies = [
  "modular-frost",
  "monero-simple-request-rpc",
  "monero-wallet",
- "parity-scale-codec",
  "rand_chacha 0.3.1",
  "rand_core 0.6.4",
  "serai-client",
@@ -10258,6 +10265,7 @@ dependencies = [
  "parity-scale-codec",
  "rand_core 0.6.4",
  "scale-info",
+ "schnorrkel",
  "sp-core",
  "zeroize",
 ]
@@ -10272,8 +10280,7 @@ dependencies = [
  "env_logger",
  "hex",
  "log",
- "parity-scale-codec",
+ "serai-cosign-types",
- "serai-cosign",
  "serai-db",
  "serai-env",
  "serai-message-queue",
@@ -10355,7 +10362,6 @@ dependencies = [
  "futures-util",
  "group",
  "k256",
- "parity-scale-codec",
  "rand_core 0.6.4",
  "revm",
  "serai-client",
@@ -10375,7 +10381,6 @@ dependencies = [
  "borsh",
  "log",
  "modular-frost",
- "parity-scale-codec",
  "rand_core 0.6.4",
  "serai-db",
  "serai-primitives",
@@ -10392,7 +10397,6 @@ dependencies = [
  "dkg-evrf",
  "flexible-transcript",
  "log",
- "parity-scale-codec",
  "rand_chacha 0.3.1",
  "rand_core 0.6.4",
  "serai-db",
@@ -10408,8 +10412,7 @@ dependencies = [
  "borsh",
  "dkg",
  "hex",
- "parity-scale-codec",
+ "serai-cosign-types",
- "serai-cosign",
  "serai-primitives",
 ]
 
@@ -10420,7 +10423,6 @@ dependencies = [
  "borsh",
  "group",
  "log",
- "parity-scale-codec",
  "serai-primitives",
  "serai-task",
  "tokio",
@@ -10435,7 +10437,6 @@ dependencies = [
  "group",
  "hex",
  "log",
- "parity-scale-codec",
  "serai-db",
  "serai-primitives",
  "serai-processor-messages",
@@ -10451,7 +10452,6 @@ dependencies = [
  "borsh",
  "ciphersuite 0.4.2",
  "modular-frost",
- "parity-scale-codec",
  "serai-db",
 ]
 
@@ -10466,9 +10466,8 @@ dependencies = [
  "frost-schnorrkel",
  "log",
  "modular-frost",
- "parity-scale-codec",
  "rand_core 0.6.4",
- "serai-cosign",
+ "serai-cosign-types",
  "serai-db",
  "serai-primitives",
  "serai-processor-frost-attempt-manager",
@@ -10486,7 +10485,6 @@ version = "0.1.0"
 dependencies = [
  "borsh",
  "group",
- "parity-scale-codec",
  "serai-db",
  "serai-processor-primitives",
  "serai-processor-scanner",
@@ -10499,7 +10497,6 @@ version = "0.1.0"
 dependencies = [
  "borsh",
  "group",
- "parity-scale-codec",
  "serai-db",
  "serai-primitives",
  "serai-processor-primitives",
@@ -10514,7 +10511,6 @@ version = "0.1.0"
 dependencies = [
  "borsh",
  "group",
- "parity-scale-codec",
  "serai-db",
  "serai-primitives",
  "serai-processor-primitives",

Cargo.toml

@@ -82,6 +82,7 @@ members = [
 
   "coordinator/tributary-sdk/tendermint",
   "coordinator/tributary-sdk",
+  "coordinator/cosign/types",
   "coordinator/cosign",
   "coordinator/substrate",
   "coordinator/tributary",

coordinator/cosign/Cargo.toml

@@ -31,3 +31,5 @@ tokio = { version = "1", default-features = false }
 
 serai-db = { path = "../../common/db", version = "0.1.1" }
 serai-task = { path = "../../common/task", version = "0.1" }
+
+serai-cosign-types = { path = "./types" }

coordinator/cosign/src/lib.rs

@@ -19,6 +19,8 @@ use serai_client::{
 use serai_db::*;
 use serai_task::*;
 
+use serai_cosign_types::*;
+
 /// The cosigns which are intended to be performed.
 mod intend;
 /// The evaluator of the cosigns.

coordinator/cosign/types/Cargo.toml

@@ -0,0 +1,25 @@
+[package]
+name = "serai-cosign-types"
+version = "0.1.0"
+description = "Evaluator of cosigns for the Serai network"
+license = "AGPL-3.0-only"
+repository = "https://github.com/serai-dex/serai/tree/develop/coordinator/cosign"
+authors = ["Luke Parker <lukeparker5132@gmail.com>"]
+keywords = []
+edition = "2021"
+publish = false
+rust-version = "1.85"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[lints]
+workspace = true
+
+[dependencies]
+schnorrkel = { version = "0.11", default-features = false, features = ["std"] }
+
+borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
+
+serai-primitives = { path = "../../../substrate/primitives", default-features = false, features = ["std"] }

coordinator/cosign/types/LICENSE

@@ -0,0 +1,15 @@
+AGPL-3.0-only license
+
+Copyright (c) 2023-2025 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/>.

coordinator/cosign/types/src/lib.rs

@@ -0,0 +1,72 @@
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![deny(missing_docs)]
+//! Types used when cosigning Serai. For more info, please see `serai-cosign`.
+use borsh::{BorshSerialize, BorshDeserialize};
+
+use serai_primitives::{crypto::Public, network_id::ExternalNetworkId};
+
+/// The schnorrkel context to used when signing a cosign.
+pub const COSIGN_CONTEXT: &[u8] = b"/serai/coordinator/cosign";
+
+/// An intended cosign.
+#[derive(Clone, Copy, PartialEq, Eq, Debug, BorshSerialize, BorshDeserialize)]
+pub struct CosignIntent {
+  /// The global session this cosign is being performed under.
+  pub global_session: [u8; 32],
+  /// The number of the block to cosign.
+  pub block_number: u64,
+  /// The hash of the block to cosign.
+  pub block_hash: [u8; 32],
+  /// If this cosign must be handled before further cosigns are.
+  pub notable: bool,
+}
+
+/// A cosign.
+#[derive(Clone, PartialEq, Eq, Debug, BorshSerialize, BorshDeserialize)]
+pub struct Cosign {
+  /// The global session this cosign is being performed under.
+  pub global_session: [u8; 32],
+  /// The number of the block to cosign.
+  pub block_number: u64,
+  /// The hash of the block to cosign.
+  pub block_hash: [u8; 32],
+  /// The actual cosigner.
+  pub cosigner: ExternalNetworkId,
+}
+
+impl CosignIntent {
+  /// Convert this into a `Cosign`.
+  pub fn into_cosign(self, cosigner: ExternalNetworkId) -> Cosign {
+    let CosignIntent { global_session, block_number, block_hash, notable: _ } = self;
+    Cosign { global_session, block_number, block_hash, cosigner }
+  }
+}
+
+impl Cosign {
+  /// The message to sign to sign this cosign.
+  ///
+  /// This must be signed with schnorrkel, the context set to `COSIGN_CONTEXT`.
+  pub fn signature_message(&self) -> Vec<u8> {
+    // We use a schnorrkel context to domain-separate this
+    borsh::to_vec(self).unwrap()
+  }
+}
+
+/// A signed cosign.
+#[derive(Clone, Debug, BorshSerialize, BorshDeserialize)]
+pub struct SignedCosign {
+  /// The cosign.
+  pub cosign: Cosign,
+  /// The signature for the cosign.
+  pub signature: [u8; 64],
+}
+
+impl SignedCosign {
+  /// Verify a cosign's signature.
+  pub fn verify_signature(&self, signer: Public) -> bool {
+    let Ok(signer) = schnorrkel::PublicKey::from_bytes(&signer.0) else { return false };
+    let Ok(signature) = schnorrkel::Signature::from_bytes(&self.signature) else { return false };
+
+    signer.verify_simple(COSIGN_CONTEXT, &self.cosign.signature_message(), &signature).is_ok()
+  }
+}

processor/bin/Cargo.toml

@@ -20,14 +20,13 @@ workspace = true
 zeroize = { version = "1", default-features = false, features = ["std"] }
 
 hex = { version = "0.4", default-features = false, features = ["std"] }
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 ciphersuite = { path = "../../crypto/ciphersuite", default-features = false, features = ["std"] }
 dkg = { package = "dkg-evrf", path = "../../crypto/dkg/evrf", default-features = false, features = ["std", "ristretto"] }
 
-serai-client = { path = "../../substrate/client", default-features = false }
+serai-primitives = { path = "../../substrate/primitives", default-features = false, features = ["std"] }
-serai-cosign = { path = "../../coordinator/cosign" }
+serai-cosign = { package = "serai-cosign-types", path = "../../coordinator/cosign/types" }
 
 log = { version = "0.4", default-features = false, features = ["std"] }
 env_logger = { version = "0.10", default-features = false, features = ["humantime"] }

processor/bin/src/coordinator.rs

@@ -3,10 +3,10 @@ use std::sync::{LazyLock, Arc, Mutex};
 
 use tokio::sync::mpsc;
 
-use serai_client::{
+use serai_primitives::{
-  primitives::Signature,
+  crypto::Signature,
-  validator_sets::primitives::{Session, SlashReport},
+  validator_sets::{Session, SlashReport},
-  in_instructions::primitives::SignedBatch,
+  instructions::SignedBatch,
 };
 
 use serai_cosign::SignedCosign;

processor/bin/src/lib.rs

@@ -8,7 +8,7 @@ use ciphersuite::{
 };
 use dkg::{Curves, Ristretto};
 
-use serai_client::validator_sets::primitives::Session;
+use serai_primitives::validator_sets::Session;
 
 use serai_env as env;
 use serai_db::{Get, DbTxn, Db as DbTrait, create_db, db_channel};

processor/bitcoin/Cargo.toml

@@ -20,7 +20,6 @@ workspace = true
 rand_core = { version = "0.6", default-features = false }
 
 hex = { version = "0.4", default-features = false, features = ["std"] }
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 ciphersuite = { path = "../../crypto/ciphersuite", default-features = false, features = ["std"] }

processor/bitcoin/src/primitives/output.rs

@@ -10,12 +10,15 @@ use bitcoin_serai::{
   wallet::ReceivedOutput as WalletOutput,
 };
 
-use scale::{Encode, Decode, IoReader};
 use borsh::{BorshSerialize, BorshDeserialize};
 use serai_db::Get;
 
 use serai_client::{
-  primitives::{ExternalCoin, Amount, ExternalBalance, ExternalAddress},
+  primitives::{
+    coin::ExternalCoin,
+    balance::{Amount, ExternalBalance},
+    address::ExternalAddress,
+  },
   networks::bitcoin::Address,
 };
 
@@ -26,7 +29,7 @@ use crate::{
   scan::{offsets_for_key, presumed_origin, extract_serai_data},
 };
 
-#[derive(Clone, PartialEq, Eq, Hash, Debug, Encode, Decode, BorshSerialize, BorshDeserialize)]
+#[derive(Clone, PartialEq, Eq, Hash, Debug, BorshSerialize, BorshDeserialize)]
 pub(crate) struct OutputId([u8; 36]);
 impl Default for OutputId {
   fn default() -> Self {
@@ -139,7 +142,7 @@ impl ReceivedOutput<<Secp256k1 as Ciphersuite>::G, Address> for Output {
   fn write<W: io::Write>(&self, writer: &mut W) -> io::Result<()> {
     self.kind.write(writer)?;
     let presumed_origin: Option<ExternalAddress> = self.presumed_origin.clone().map(Into::into);
-    writer.write_all(&presumed_origin.encode())?;
+    presumed_origin.serialize(writer)?;
     self.output.write(writer)?;
     writer.write_all(&u16::try_from(self.data.len()).unwrap().to_le_bytes())?;
     writer.write_all(&self.data)
@@ -149,7 +152,7 @@ impl ReceivedOutput<<Secp256k1 as Ciphersuite>::G, Address> for Output {
     Ok(Output {
       kind: OutputType::read(reader)?,
       presumed_origin: {
-        Option::<ExternalAddress>::decode(&mut IoReader(&mut reader))
+        Option::<ExternalAddress>::deserialize_reader(&mut reader)
           .map_err(|e| io::Error::other(format!("couldn't decode ExternalAddress: {e:?}")))?
           .map(|address| {
             Address::try_from(address)

processor/bitcoin/src/rpc.rs

@@ -2,7 +2,7 @@ use core::future::Future;
 
 use bitcoin_serai::rpc::{RpcError, Rpc as BRpc};
 
-use serai_client::primitives::{ExternalNetworkId, ExternalCoin, Amount};
+use serai_client::primitives::{network_id::ExternalNetworkId, coin::ExternalCoin, balance::Amount};
 
 use serai_db::Db;
 use scanner::ScannerFeed;

processor/bitcoin/src/scheduler.rs

@@ -9,7 +9,7 @@ use bitcoin_serai::{
 };
 
 use serai_client::{
-  primitives::{ExternalCoin, Amount},
+  primitives::{coin::ExternalCoin, balance::Amount},
   networks::bitcoin::Address,
 };
 

processor/ethereum/Cargo.toml

@@ -21,7 +21,6 @@ rand_core = { version = "0.6", default-features = false }
 
 const-hex = { version = "1", default-features = false, features = ["std"] }
 hex = { version = "0.4", default-features = false, features = ["std"] }
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 ciphersuite = { path = "../../crypto/ciphersuite", default-features = false, features = ["std"] }

processor/ethereum/router/Cargo.toml

@@ -41,7 +41,6 @@ ethereum-primitives = { package = "serai-processor-ethereum-primitives", path =
 ethereum-deployer = { package = "serai-processor-ethereum-deployer", path = "../deployer", default-features = false }
 erc20 = { package = "serai-processor-ethereum-erc20", path = "../erc20", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 serai-client = { path = "../../../substrate/client", default-features = false, features = ["ethereum"] }
 
 futures-util = { version = "0.3", default-features = false, features = ["std"] }

processor/ethereum/router/contracts/IRouter.sol

@@ -19,7 +19,7 @@ interface IRouterWithoutCollisions {
   /// @param from The address which called `inInstruction` and caused this event to be emitted
   /// @param coin The coin transferred in
   /// @param amount The amount of the coin transferred in
-  /// @param instruction The Shorthand-encoded InInstruction for Serai to decode and handle
+  /// @param instruction The encoded `RefundableInInstruction` for Serai to decode and handle
   event InInstruction(
     address indexed from, address indexed coin, uint256 amount, bytes instruction
   );
@@ -81,7 +81,7 @@ interface IRouterWithoutCollisions {
   /// @param coin The coin to transfer in (address(0) if Ether)
   /// @param amount The amount to transfer in (msg.value if Ether)
   /**
-   * @param instruction The Shorthand-encoded InInstruction for Serai to associate with this
+   * @param instruction The encoded `RefundableInInstruction` for Serai to associate with this
    *  transfer in
    */
   // Re-entrancy doesn't bork this function

processor/ethereum/router/contracts/Router.sol

@@ -293,7 +293,7 @@ contract Router is IRouterWithoutCollisions {
   /// @param coin The coin to transfer in (address(0) if Ether)
   /// @param amount The amount to transfer in (msg.value if Ether)
   /**
-   * @param instruction The Shorthand-encoded InInstruction for Serai to associate with this
+   * @param instruction The encoded `RefundableInInstruction` for Serai to associate with this
    *  transfer in
    */
   // This function doesn't require nonReentrant as re-entrancy isn't an issue with this function

processor/ethereum/router/src/lib.rs

@@ -21,9 +21,8 @@ use alloy_rpc_types_eth::{BlockId, Log, Filter, TransactionInput, TransactionReq
 use alloy_transport::{TransportErrorKind, RpcError};
 use alloy_provider::{Provider, RootProvider};
 
-use scale::Encode;
 use serai_client::{
-  in_instructions::primitives::Shorthand, networks::ethereum::Address as SeraiAddress,
+  primitives::instructions::RefundableInInstruction, networks::ethereum::Address as SeraiAddress,
 };
 
 use ethereum_primitives::LogIndex;
@@ -351,18 +350,27 @@ impl Router {
     }
   }
 
-  /// Construct a transaction to send coins with an InInstruction to Serai.
+  /// Construct a transaction to send coins with an `InInstruction` to Serai.
   ///
   /// If coin is an ERC20, this will not create a transaction calling the Router but will create a
   /// top-level transfer of the ERC20 to the Router. This avoids needing to call `approve` before
   /// publishing the transaction calling the Router.
   ///
   /// The gas limit and gas price are not set and are left to the caller.
-  pub fn in_instruction(&self, coin: Coin, amount: U256, in_instruction: &Shorthand) -> TxLegacy {
+  pub fn in_instruction(
+    &self,
+    coin: Coin,
+    amount: U256,
+    in_instruction: &RefundableInInstruction,
+  ) -> TxLegacy {
     match coin {
       Coin::Ether => TxLegacy {
         to: self.address.into(),
-        input: abi::inInstructionCall::new((coin.into(), amount, in_instruction.encode().into()))
+        input: abi::inInstructionCall::new((
+          coin.into(),
+          amount,
+          borsh::to_vec(&in_instruction).unwrap().into(),
+        ))
         .abi_encode()
         .into(),
         value: amount,
@@ -373,7 +381,7 @@ impl Router {
         input: erc20::transferWithInInstructionCall::new((
           self.address,
           amount,
-          in_instruction.encode().into(),
+          borsh::to_vec(&in_instruction).unwrap().into(),
         ))
         .abi_encode()
         .into(),

processor/ethereum/router/src/tests/in_instruction.rs

@@ -5,12 +5,9 @@ use alloy_sol_types::SolCall;
 
 use alloy_consensus::{TxLegacy, Signed};
 
-use scale::Encode;
 use serai_client::{
   primitives::SeraiAddress,
-  in_instructions::primitives::{
+  primitives::instructions::{InInstruction as SeraiInInstruction, RefundableInInstruction},
-    InInstruction as SeraiInInstruction, RefundableInInstruction, Shorthand,
-  },
 };
 
 use ethereum_primitives::LogIndex;
@@ -18,14 +15,14 @@ use ethereum_primitives::LogIndex;
 use crate::{InInstruction, tests::*};
 
 impl Test {
-  pub(crate) fn in_instruction() -> Shorthand {
+  pub(crate) fn in_instruction() -> RefundableInInstruction {
-    Shorthand::Raw(RefundableInInstruction {
+    RefundableInInstruction {
       origin: None,
       instruction: SeraiInInstruction::Transfer(SeraiAddress([0xff; 32])),
-    })
+    }
   }
 
-  pub(crate) fn eth_in_instruction_tx(&self) -> (Coin, U256, Shorthand, TxLegacy) {
+  pub(crate) fn eth_in_instruction_tx(&self) -> (Coin, U256, RefundableInInstruction, TxLegacy) {
     let coin = Coin::Ether;
     let amount = U256::from(1);
     let shorthand = Self::in_instruction();
@@ -42,7 +39,7 @@ impl Test {
     tx: Signed<TxLegacy>,
     coin: Coin,
     amount: U256,
-    shorthand: &Shorthand,
+    shorthand: &RefundableInInstruction,
   ) {
     let receipt = ethereum_test_primitives::publish_tx(&self.provider, tx.clone()).await;
     assert!(receipt.status());
@@ -81,7 +78,7 @@ impl Test {
         from: tx.recover_signer().unwrap(),
         coin,
         amount,
-        data: shorthand.encode(),
+        data: borsh::to_vec(&shorthand).unwrap(),
       }
     );
   }
@@ -140,7 +137,11 @@ async fn test_erc20_router_in_instruction() {
     gas_limit: 1_000_000,
     to: test.router.address().into(),
     value: U256::ZERO,
-    input: crate::abi::inInstructionCall::new((coin.into(), amount, shorthand.encode().into()))
+    input: crate::abi::inInstructionCall::new((
+      coin.into(),
+      amount,
+      borsh::to_vec(shorthand).unwrap().into(),
+    ))
     .abi_encode()
     .into(),
   };

processor/ethereum/src/main.rs

@@ -14,7 +14,7 @@ use alloy_simple_request_transport::SimpleRequest;
 use alloy_rpc_client::ClientBuilder;
 use alloy_provider::{Provider, RootProvider};
 
-use serai_client::validator_sets::primitives::Session;
+use serai_client::primitives::validator_sets::Session;
 
 use serai_env as env;
 use serai_db::{Get, DbTxn, create_db};

processor/ethereum/src/primitives/mod.rs

@@ -1,6 +1,6 @@
 use alloy_core::primitives::{FixedBytes, Address};
 
-use serai_client::primitives::Amount;
+use serai_client::primitives::balance::Amount;
 
 pub(crate) mod output;
 pub(crate) mod transaction;

processor/ethereum/src/primitives/output.rs

@@ -5,11 +5,14 @@ use ciphersuite_kp256::Secp256k1;
 
 use alloy_core::primitives::U256;
 
-use scale::{Encode, Decode};
 use borsh::{BorshSerialize, BorshDeserialize};
 
 use serai_client::{
-  primitives::{ExternalNetworkId, ExternalCoin, Amount, ExternalBalance},
+  primitives::{
+    network_id::ExternalNetworkId,
+    coin::ExternalCoin,
+    balance::{Amount, ExternalBalance},
+  },
   networks::ethereum::Address,
 };
 
@@ -39,9 +42,7 @@ fn amount_to_serai_amount(coin: ExternalCoin, amount: U256) -> Amount {
   Amount(u64::try_from(amount / divisor).unwrap())
 }
 
-#[derive(
+#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, BorshSerialize, BorshDeserialize)]
-  Clone, Copy, PartialEq, Eq, Hash, Debug, Encode, Decode, BorshSerialize, BorshDeserialize,
-)]
 pub(crate) struct OutputId(pub(crate) [u8; 40]);
 impl Default for OutputId {
   fn default() -> Self {

processor/ethereum/src/rpc.rs

@@ -6,7 +6,7 @@ use alloy_rpc_types_eth::{Header, BlockNumberOrTag};
 use alloy_transport::{RpcError, TransportErrorKind};
 use alloy_provider::{Provider, RootProvider};
 
-use serai_client::primitives::{ExternalNetworkId, ExternalCoin, Amount};
+use serai_client::primitives::{network_id::ExternalNetworkId, coin::ExternalCoin, balance::Amount};
 
 use tokio::task::JoinSet;
 

processor/ethereum/src/scheduler.rs

@@ -3,7 +3,7 @@ use std::collections::HashMap;
 use alloy_core::primitives::U256;
 
 use serai_client::{
-  primitives::{ExternalNetworkId, ExternalCoin, ExternalBalance},
+  primitives::{network_id::ExternalNetworkId, coin::ExternalCoin, balance::ExternalBalance},
   networks::ethereum::Address,
 };
 

processor/frost-attempt-manager/Cargo.toml

@@ -15,7 +15,7 @@ all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
 [package.metadata.cargo-machete]
-ignored = ["borsh", "scale"]
+ignored = ["borsh"]
 
 [lints]
 workspace = true
@@ -29,7 +29,6 @@ serai-primitives = { path = "../../substrate/primitives", default-features = fal
 
 log = { version = "0.4", default-features = false, features = ["std"] }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 serai-db = { path = "../../common/db" }
 

processor/frost-attempt-manager/src/individual.rs

@@ -7,7 +7,7 @@ use frost::{
   sign::{Writable, PreprocessMachine, SignMachine, SignatureMachine},
 };
 
-use serai_validator_sets_primitives::Session;
+use serai_primitives::validator_sets::Session;
 
 use serai_db::{Get, DbTxn, Db, create_db};
 use messages::sign::{VariantSignId, SignId, ProcessorMessage};

processor/frost-attempt-manager/src/lib.rs

@@ -6,7 +6,7 @@ use std::collections::HashMap;
 
 use frost::{Participant, sign::PreprocessMachine};
 
-use serai_validator_sets_primitives::Session;
+use serai_primitives::validator_sets::Session;
 
 use serai_db::{DbTxn, Db};
 use messages::sign::{VariantSignId, ProcessorMessage, CoordinatorMessage};

processor/key-gen/Cargo.toml

@@ -14,9 +14,6 @@ rust-version = "1.89"
 all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
-[package.metadata.cargo-machete]
-ignored = ["scale"]
-
 [lints]
 workspace = true
 
@@ -38,7 +35,6 @@ dkg = { package = "dkg-evrf", path = "../../crypto/dkg/evrf", default-features =
 serai-primitives = { path = "../../substrate/primitives", default-features = false, features = ["std"] }
 
 # Encoders
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 # Application

processor/key-gen/src/db.rs

@@ -6,7 +6,7 @@ use zeroize::Zeroizing;
 use ciphersuite::{group::GroupEncoding, Ciphersuite};
 use dkg::*;
 
-use serai_validator_sets_primitives::Session;
+use serai_primitives::validator_sets::Session;
 
 use borsh::{BorshSerialize, BorshDeserialize};
 use serai_db::{Get, DbTxn};
@@ -36,7 +36,7 @@ pub(crate) struct Participations {
 }
 
 mod _db {
-  use serai_validator_sets_primitives::Session;
+  use serai_primitives::validator_sets::Session;
 
   use serai_db::{Get, DbTxn, create_db};
 

processor/key-gen/src/generators.rs

@@ -6,7 +6,7 @@ use std::{
 
 use dkg::*;
 
-use serai_validator_sets_primitives::MAX_KEY_SHARES_PER_SET;
+use serai_primitives::constants::MAX_KEY_SHARES_PER_SET;
 
 /// A cache of the generators used by the eVRF DKG.
 ///

processor/key-gen/src/lib.rs

@@ -17,7 +17,7 @@ use ciphersuite::{
 };
 use dkg::*;
 
-use serai_validator_sets_primitives::Session;
+use serai_primitives::validator_sets::Session;
 use messages::key_gen::*;
 
 use serai_db::{Get, DbTxn};

processor/messages/Cargo.toml

@@ -20,11 +20,10 @@ workspace = true
 [dependencies]
 hex = { version = "0.4", default-features = false, features = ["std"] }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 dkg = { path = "../../crypto/dkg", default-features = false, features = ["std", "borsh"] }
 
 serai-primitives = { path = "../../substrate/primitives", default-features = false, features = ["std"] }
 
-serai-cosign = { path = "../../coordinator/cosign", default-features = false }
+serai-cosign = { package = "serai-cosign-types", path = "../../coordinator/cosign/types" }

processor/messages/src/lib.rs

@@ -1,15 +1,16 @@
 use core::fmt;
 use std::collections::HashMap;
 
-use scale::{Encode, Decode};
 use borsh::{BorshSerialize, BorshDeserialize};
 
 use dkg::Participant;
 
-use serai_primitives::BlockHash;
+use serai_primitives::{
-use validator_sets_primitives::{Session, KeyPair, SlashReport};
+  BlockHash,
-use coins_primitives::OutInstructionWithBalance;
+  crypto::KeyPair,
-use in_instructions_primitives::SignedBatch;
+  validator_sets::{Session, SlashReport},
+  instructions::{SignedBatch, OutInstructionWithBalance},
+};
 
 use serai_cosign::{Cosign, SignedCosign};
 
@@ -87,7 +88,7 @@ pub mod key_gen {
 pub mod sign {
   use super::*;
 
-  #[derive(Clone, Copy, PartialEq, Eq, Hash, Encode, Decode, BorshSerialize, BorshDeserialize)]
+  #[derive(Clone, Copy, PartialEq, Eq, Hash, BorshSerialize, BorshDeserialize)]
   pub enum VariantSignId {
     Cosign(u64),
     Batch([u8; 32]),
@@ -111,9 +112,7 @@ pub mod sign {
     }
   }
 
-  #[derive(
+  #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, BorshSerialize, BorshDeserialize)]
-    Clone, Copy, PartialEq, Eq, Hash, Debug, Encode, Decode, BorshSerialize, BorshDeserialize,
-  )]
   pub struct SignId {
     pub session: Session,
     pub id: VariantSignId,
@@ -295,7 +294,7 @@ impl CoordinatorMessage {
         let (sub, id) = match msg {
           // Unique since we only have one attempt per session
           key_gen::CoordinatorMessage::GenerateKey { session, .. } => {
-            (0, borsh::to_vec(session).unwrap())
+            (0, borsh::to_vec(&session).unwrap())
           }
           // Unique since one participation per participant per session
           key_gen::CoordinatorMessage::Participation { session, participant, .. } => {
@@ -316,17 +315,19 @@ impl CoordinatorMessage {
         };
 
         let mut res = vec![COORDINATOR_UID, TYPE_SIGN_UID, sub];
-        res.extend(id.encode());
+        res.extend(borsh::to_vec(&id).unwrap());
         res
       }
       CoordinatorMessage::Coordinator(msg) => {
         let (sub, id) = match msg {
           // We only cosign a block once, and Reattempt is a separate message
           coordinator::CoordinatorMessage::CosignSubstrateBlock { cosign, .. } => {
-            (0, cosign.block_number.encode())
+            (0, borsh::to_vec(&cosign.block_number).unwrap())
           }
           // We only sign one slash report, and Reattempt is a separate message
-          coordinator::CoordinatorMessage::SignSlashReport { session, .. } => (1, session.encode()),
+          coordinator::CoordinatorMessage::SignSlashReport { session, .. } => {
+            (1, borsh::to_vec(&session).unwrap())
+          }
         };
 
         let mut res = vec![COORDINATOR_UID, TYPE_COORDINATOR_UID, sub];
@@ -335,10 +336,14 @@ impl CoordinatorMessage {
       }
       CoordinatorMessage::Substrate(msg) => {
         let (sub, id) = match msg {
-          substrate::CoordinatorMessage::SetKeys { session, .. } => (0, session.encode()),
+          substrate::CoordinatorMessage::SetKeys { session, .. } => {
-          substrate::CoordinatorMessage::SlashesReported { session } => (1, session.encode()),
+            (0, borsh::to_vec(&session).unwrap())
+          }
+          substrate::CoordinatorMessage::SlashesReported { session } => {
+            (1, borsh::to_vec(&session).unwrap())
+          }
           substrate::CoordinatorMessage::Block { serai_block_number, .. } => {
-            (2, serai_block_number.encode())
+            (2, borsh::to_vec(&serai_block_number).unwrap())
           }
         };
 
@@ -363,10 +368,10 @@ impl ProcessorMessage {
         let (sub, id) = match msg {
           // Unique since we only have one participation per session (due to no re-attempts)
           key_gen::ProcessorMessage::Participation { session, .. } => {
-            (0, borsh::to_vec(session).unwrap())
+            (0, borsh::to_vec(&session).unwrap())
           }
           key_gen::ProcessorMessage::GeneratedKeyPair { session, .. } => {
-            (1, borsh::to_vec(session).unwrap())
+            (1, borsh::to_vec(&session).unwrap())
           }
           // Unique since we only blame a participant once (as this is fatal)
           key_gen::ProcessorMessage::Blame { session, participant } => {
@@ -382,11 +387,11 @@ impl ProcessorMessage {
         let (sub, id) = match msg {
           // Unique since we'll only fatally slash a a participant once
           sign::ProcessorMessage::InvalidParticipant { session, participant } => {
-            (0, (session, u16::from(*participant)).encode())
+            (0, borsh::to_vec(&(session, u16::from(*participant))).unwrap())
           }
           // Unique since SignId
-          sign::ProcessorMessage::Preprocesses { id, .. } => (1, id.encode()),
+          sign::ProcessorMessage::Preprocesses { id, .. } => (1, borsh::to_vec(&id).unwrap()),
-          sign::ProcessorMessage::Shares { id, .. } => (2, id.encode()),
+          sign::ProcessorMessage::Shares { id, .. } => (2, borsh::to_vec(&id).unwrap()),
         };
 
         let mut res = vec![PROCESSOR_UID, TYPE_SIGN_UID, sub];
@@ -396,10 +401,14 @@ impl ProcessorMessage {
       ProcessorMessage::Coordinator(msg) => {
         let (sub, id) = match msg {
           coordinator::ProcessorMessage::CosignedBlock { cosign } => {
-            (0, cosign.cosign.block_hash.encode())
+            (0, borsh::to_vec(&cosign.cosign.block_hash).unwrap())
+          }
+          coordinator::ProcessorMessage::SignedBatch { batch, .. } => {
+            (1, borsh::to_vec(&batch.batch.id()).unwrap())
+          }
+          coordinator::ProcessorMessage::SignedSlashReport { session, .. } => {
+            (2, borsh::to_vec(&session).unwrap())
           }
-          coordinator::ProcessorMessage::SignedBatch { batch, .. } => (1, batch.batch.id.encode()),
-          coordinator::ProcessorMessage::SignedSlashReport { session, .. } => (2, session.encode()),
         };
 
         let mut res = vec![PROCESSOR_UID, TYPE_COORDINATOR_UID, sub];
@@ -408,7 +417,9 @@ impl ProcessorMessage {
       }
       ProcessorMessage::Substrate(msg) => {
         let (sub, id) = match msg {
-          substrate::ProcessorMessage::SubstrateBlockAck { block, .. } => (0, block.encode()),
+          substrate::ProcessorMessage::SubstrateBlockAck { block, .. } => {
+            (0, borsh::to_vec(&block).unwrap())
+          }
         };
 
         let mut res = vec![PROCESSOR_UID, TYPE_SUBSTRATE_UID, sub];

processor/monero/Cargo.toml

@@ -21,7 +21,6 @@ rand_core = { version = "0.6", default-features = false }
 rand_chacha = { version = "0.3", default-features = false, features = ["std"] }
 zeroize = { version = "1", default-features = false, features = ["std"] }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 ciphersuite = { path = "../../crypto/ciphersuite", default-features = false, features = ["std"] }

processor/monero/src/primitives/output.rs

@@ -5,11 +5,13 @@ use dalek_ff_group::Ed25519;
 
 use monero_wallet::WalletOutput;
 
-use scale::{Encode, Decode};
 use borsh::{BorshSerialize, BorshDeserialize};
 
 use serai_client::{
-  primitives::{ExternalCoin, Amount, ExternalBalance},
+  primitives::{
+    coin::ExternalCoin,
+    balance::{Amount, ExternalBalance},
+  },
   networks::monero::Address,
 };
 
@@ -17,10 +19,7 @@ use primitives::{OutputType, ReceivedOutput};
 
 use crate::{EXTERNAL_SUBADDRESS, BRANCH_SUBADDRESS, CHANGE_SUBADDRESS, FORWARDED_SUBADDRESS};
 
-#[rustfmt::skip]
+#[derive(Clone, Copy, PartialEq, Eq, Default, Hash, Debug, BorshSerialize, BorshDeserialize)]
-#[derive(
-  Clone, Copy, PartialEq, Eq, Default, Hash, Debug, Encode, Decode, BorshSerialize, BorshDeserialize,
-)]
 pub(crate) struct OutputId(pub(crate) [u8; 32]);
 impl AsRef<[u8]> for OutputId {
   fn as_ref(&self) -> &[u8] {

processor/monero/src/rpc.rs

@@ -3,7 +3,7 @@ use core::future::Future;
 use monero_wallet::rpc::{RpcError, Rpc as RpcTrait};
 use monero_simple_request_rpc::SimpleRequestRpc;
 
-use serai_client::primitives::{ExternalNetworkId, ExternalCoin, Amount};
+use serai_client::primitives::{network_id::ExternalNetworkId, coin::ExternalCoin, balance::Amount};
 
 use scanner::ScannerFeed;
 use signers::TransactionPublisher;

processor/monero/src/scheduler.rs

@@ -10,7 +10,7 @@ use dalek_ff_group::Ed25519;
 use monero_wallet::rpc::{FeeRate, RpcError};
 
 use serai_client::{
-  primitives::{ExternalCoin, Amount},
+  primitives::{coin::ExternalCoin, balance::Amount},
   networks::monero::Address,
 };
 

processor/primitives/Cargo.toml

@@ -22,7 +22,6 @@ group = { version = "0.13", default-features = false }
 
 serai-primitives = { path = "../../substrate/primitives", default-features = false, features = ["std"] }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 log = { version = "0.4", default-features = false, features = ["std"] }

processor/primitives/src/lib.rs

@@ -6,7 +6,6 @@ use core::{hash::Hash, fmt::Debug};
 
 use group::GroupEncoding;
 
-use scale::{Encode, Decode};
 use borsh::{BorshSerialize, BorshDeserialize};
 
 /// A module for task-related structs and functionality.
@@ -40,8 +39,6 @@ pub trait Id:
   + AsRef<[u8]>
   + AsMut<[u8]>
   + Debug
-  + Encode
-  + Decode
   + BorshSerialize
   + BorshDeserialize
 {
@@ -57,22 +54,15 @@ impl<
       + AsRef<[u8]>
       + AsMut<[u8]>
       + Debug
-      + Encode
-      + Decode
       + BorshSerialize
       + BorshDeserialize,
   > Id for I
 {
 }
 
-/// A wrapper for a group element which implements the scale/borsh traits.
+/// A wrapper for a group element which implements the `borsh` traits.
 #[derive(Clone, Copy, PartialEq, Eq, Debug)]
 pub struct EncodableG<G: GroupEncoding>(pub G);
-impl<G: GroupEncoding> Encode for EncodableG<G> {
-  fn using_encoded<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R {
-    f(self.0.to_bytes().as_ref())
-  }
-}
 impl<G: GroupEncoding> BorshSerialize for EncodableG<G> {
   fn serialize<W: borsh::io::Write>(&self, writer: &mut W) -> borsh::io::Result<()> {
     writer.write_all(self.0.to_bytes().as_ref())

processor/primitives/src/output.rs

@@ -5,7 +5,7 @@ use group::GroupEncoding;
 
 use borsh::{BorshSerialize, BorshDeserialize};
 
-use serai_primitives::{ExternalAddress, ExternalBalance};
+use serai_primitives::{address::ExternalAddress, balance::ExternalBalance};
 
 use crate::Id;
 

processor/primitives/src/payment.rs

@@ -1,10 +1,11 @@
 use std::io;
 
-use scale::{Encode, Decode, IoReader};
 use borsh::{BorshSerialize, BorshDeserialize};
 
-use serai_primitives::ExternalBalance;
+use serai_primitives::{
-use serai_coins_primitives::OutInstructionWithBalance;
+  balance::ExternalBalance,
+  instructions::{OutInstruction, OutInstructionWithBalance},
+};
 
 use crate::Address;
 
@@ -18,9 +19,11 @@ pub struct Payment<A: Address> {
 impl<A: Address> TryFrom<OutInstructionWithBalance> for Payment<A> {
   type Error = ();
   fn try_from(out_instruction_with_balance: OutInstructionWithBalance) -> Result<Self, ()> {
-    Ok(Payment {
+    Ok(match out_instruction_with_balance.instruction {
-      address: out_instruction_with_balance.instruction.address.try_into().map_err(|_| ())?,
+      OutInstruction::Transfer(address) => Payment {
+        address: address.try_into().map_err(|_| ())?,
         balance: out_instruction_with_balance.balance,
+      },
     })
   }
 }
@@ -43,14 +46,12 @@ impl<A: Address> Payment<A> {
   /// Read a Payment.
   pub fn read(reader: &mut impl io::Read) -> io::Result<Self> {
     let address = A::deserialize_reader(reader)?;
-    let reader = &mut IoReader(reader);
+    let balance = ExternalBalance::deserialize_reader(reader).map_err(io::Error::other)?;
-    let balance = ExternalBalance::decode(reader).map_err(io::Error::other)?;
     Ok(Self { address, balance })
   }
   /// Write the Payment.
   pub fn write(&self, writer: &mut impl io::Write) -> io::Result<()> {
     self.address.serialize(writer)?;
-    self.balance.encode_to(writer);
+    self.balance.serialize(writer)
-    Ok(())
   }
 }

processor/scanner/Cargo.toml

@@ -20,7 +20,6 @@ workspace = true
 [dependencies]
 # Encoders
 hex = { version = "0.4", default-features = false, features = ["std"] }
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 # Cryptography

processor/scanner/src/batch/db.rs

@@ -3,12 +3,10 @@ use std::io::{Read, Write};
 
 use group::GroupEncoding;
 
-use scale::{Encode, Decode, IoReader};
 use borsh::{BorshSerialize, BorshDeserialize};
 use serai_db::{Get, DbTxn, create_db};
 
-use serai_primitives::ExternalBalance;
+use serai_primitives::{balance::ExternalBalance, validator_sets::Session};
-use serai_validator_sets_primitives::Session;
 
 use primitives::EncodableG;
 use crate::{ScannerFeed, KeyFor, AddressFor};
@@ -94,7 +92,7 @@ impl<S: ScannerFeed> BatchDb<S> {
       if let Some(ReturnInformation { address, balance }) = return_information {
         buf.write_all(&[1]).unwrap();
         address.serialize(&mut buf).unwrap();
-        balance.encode_to(&mut buf);
+        balance.serialize(&mut buf).unwrap();
       } else {
         buf.write_all(&[0]).unwrap();
       }
@@ -116,7 +114,7 @@ impl<S: ScannerFeed> BatchDb<S> {
 
       res.push((opt[0] == 1).then(|| {
         let address = AddressFor::<S>::deserialize_reader(&mut buf).unwrap();
-        let balance = ExternalBalance::decode(&mut IoReader(&mut buf)).unwrap();
+        let balance = ExternalBalance::deserialize_reader(&mut buf).unwrap();
         ReturnInformation { address, balance }
       }));
     }

processor/scanner/src/batch/mod.rs

@@ -2,11 +2,9 @@ use core::{marker::PhantomData, future::Future};
 
 use blake2::{digest::typenum::U32, Digest, Blake2b};
 
-use scale::Encode;
 use serai_db::{DbTxn, Db};
 
-use serai_primitives::BlockHash;
+use serai_primitives::{BlockHash, instructions::Batch};
-use serai_in_instructions_primitives::{MAX_BATCH_SIZE, Batch};
 
 use primitives::{
   EncodableG,
@@ -111,12 +109,7 @@ impl<D: Db, S: ScannerFeed> ContinuallyRan for BatchTask<D, S> {
           let mut batch_id = BatchDb::<S>::acquire_batch_id(&mut txn);
 
           // start with empty batch
-          let mut batches = vec![Batch {
+          let mut batches = vec![Batch::new(network, batch_id, external_network_block_hash)];
-            network,
-            id: batch_id,
-            external_network_block_hash,
-            instructions: vec![],
-          }];
           // We also track the return information for the InInstructions within a Batch in case
           // they error
           let mut return_information = vec![vec![]];
@@ -125,23 +118,19 @@ impl<D: Db, S: ScannerFeed> ContinuallyRan for BatchTask<D, S> {
             let balance = in_instruction.balance;
 
             let batch = batches.last_mut().unwrap();
-            batch.instructions.push(in_instruction);
 
             // check if batch is over-size
-            if batch.encode().len() > MAX_BATCH_SIZE {
+            if batch.push_instruction(in_instruction.clone()).is_err() {
-              // pop the last instruction so it's back in size
-              let in_instruction = batch.instructions.pop().unwrap();
-
               // bump the id for the new batch
               batch_id = BatchDb::<S>::acquire_batch_id(&mut txn);
 
               // make a new batch with this instruction included
-              batches.push(Batch {
+              let mut batch = Batch::new(network, batch_id, external_network_block_hash);
-                network,
+              batch
-                id: batch_id,
+                .push_instruction(in_instruction)
-                external_network_block_hash,
+                .expect("single InInstruction exceeded Batch size limit");
-                instructions: vec![in_instruction],
+              batches.push(batch);
-              });
+
               // Since we're allocating a new batch, allocate a new set of return addresses for it
               return_information.push(vec![]);
             }
@@ -157,16 +146,16 @@ impl<D: Db, S: ScannerFeed> ContinuallyRan for BatchTask<D, S> {
           // Now that we've finalized the Batches, save the information for each to the database
           assert_eq!(batches.len(), return_information.len());
           for (batch, return_information) in batches.iter().zip(&return_information) {
-            assert_eq!(batch.instructions.len(), return_information.len());
+            assert_eq!(batch.instructions().len(), return_information.len());
             BatchDb::<S>::save_batch_info(
               &mut txn,
-              batch.id,
+              batch.id(),
               block_number,
               session_to_sign_batch,
               external_key_for_session_to_sign_batch,
-              Blake2b::<U32>::digest(batch.instructions.encode()).into(),
+              Blake2b::<U32>::digest(borsh::to_vec(&batch.instructions()).unwrap()).into(),
             );
-            BatchDb::<S>::save_return_information(&mut txn, batch.id, return_information);
+            BatchDb::<S>::save_return_information(&mut txn, batch.id(), return_information);
           }
 
           for batch in batches {

processor/scanner/src/db.rs

@@ -3,13 +3,13 @@ use std::io::{self, Read, Write};
 
 use group::GroupEncoding;
 
-use scale::{Encode, Decode, IoReader};
 use borsh::{BorshSerialize, BorshDeserialize};
 use serai_db::{Get, DbTxn, create_db, db_channel};
 
-use serai_coins_primitives::OutInstructionWithBalance;
+use serai_primitives::{
-use serai_validator_sets_primitives::Session;
+  validator_sets::Session,
-use serai_in_instructions_primitives::{InInstructionWithBalance, Batch};
+  instructions::{InInstructionWithBalance, Batch, OutInstructionWithBalance},
+};
 
 use primitives::{EncodableG, ReceivedOutput};
 
@@ -56,7 +56,7 @@ impl<S: ScannerFeed> OutputWithInInstruction<S> {
       (opt[0] == 1).then(|| AddressFor::<S>::deserialize_reader(reader)).transpose()?
     };
     let in_instruction =
-      InInstructionWithBalance::decode(&mut IoReader(reader)).map_err(io::Error::other)?;
+      InInstructionWithBalance::deserialize_reader(reader).map_err(io::Error::other)?;
     Ok(Self { output, return_address, in_instruction })
   }
   pub(crate) fn write(&self, writer: &mut impl io::Write) -> io::Result<()> {
@@ -67,7 +67,7 @@ impl<S: ScannerFeed> OutputWithInInstruction<S> {
     } else {
       writer.write_all(&[0])?;
     }
-    self.in_instruction.encode_to(writer);
+    self.in_instruction.serialize(writer)?;
     Ok(())
   }
 }
@@ -76,10 +76,10 @@ create_db!(
   ScannerGlobal {
     StartBlock: () -> u64,
 
-    QueuedKey: <K: Encode>(key: K) -> (),
+    QueuedKey: <K: BorshSerialize>(key: K) -> (),
 
     ActiveKeys: <K: Borshy>() -> Vec<SeraiKeyDbEntry<K>>,
-    RetireAt: <K: Encode>(key: K) -> u64,
+    RetireAt: <K: BorshSerialize>(key: K) -> u64,
 
     // Highest acknowledged block
     HighestAcknowledgedBlock: () -> u64,
@@ -294,7 +294,7 @@ impl<S: ScannerFeed> ScannerGlobalDb<S> {
     assert!((opt[0] == 0) || (opt[0] == 1));
 
     let address = (opt[0] == 1).then(|| AddressFor::<S>::deserialize_reader(&mut buf).unwrap());
-    Some((address, InInstructionWithBalance::decode(&mut IoReader(buf)).unwrap()))
+    Some((address, InInstructionWithBalance::deserialize_reader(&mut buf).unwrap()))
   }
 }
 
@@ -357,7 +357,7 @@ impl<S: ScannerFeed> ScanToEventualityDb<S> {
       } else {
         buf.write_all(&[0]).unwrap();
       }
-      forward.in_instruction.encode_to(&mut buf);
+      forward.in_instruction.serialize(&mut buf).unwrap();
 
       SerializedForwardedOutput::set(txn, forward.output.id().as_ref(), &buf);
     }
@@ -454,7 +454,7 @@ impl<S: ScannerFeed> Returnable<S> {
       (opt[0] == 1).then(|| AddressFor::<S>::deserialize_reader(reader)).transpose()?;
 
     let in_instruction =
-      InInstructionWithBalance::decode(&mut IoReader(reader)).map_err(io::Error::other)?;
+      InInstructionWithBalance::deserialize_reader(reader).map_err(io::Error::other)?;
     Ok(Returnable { return_address, in_instruction })
   }
   fn write(&self, writer: &mut impl io::Write) -> io::Result<()> {
@@ -464,7 +464,7 @@ impl<S: ScannerFeed> Returnable<S> {
     } else {
       writer.write_all(&[0])?;
     }
-    self.in_instruction.encode_to(writer);
+    self.in_instruction.serialize(writer)?;
     Ok(())
   }
 }
@@ -494,7 +494,7 @@ impl<S: ScannerFeed> ScanToBatchDb<S> {
     block_number: u64,
     data: &InInstructionData<S>,
   ) {
-    let mut buf = data.session_to_sign_batch.encode();
+    let mut buf = borsh::to_vec(&data.session_to_sign_batch).unwrap();
     buf.extend(data.external_key_for_session_to_sign_batch.to_bytes().as_ref());
     for returnable_in_instruction in &data.returnable_in_instructions {
       returnable_in_instruction.write(&mut buf).unwrap();
@@ -517,7 +517,7 @@ impl<S: ScannerFeed> ScanToBatchDb<S> {
     );
     let mut buf = data.returnable_in_instructions.as_slice();
 
-    let session_to_sign_batch = Session::decode(&mut buf).unwrap();
+    let session_to_sign_batch = Session::deserialize_reader(&mut buf).unwrap();
     let external_key_for_session_to_sign_batch = {
       let mut external_key_for_session_to_sign_batch =
         <KeyFor<S> as GroupEncoding>::Repr::default();
@@ -595,7 +595,7 @@ impl SubstrateToEventualityDb {
 }
 
 mod _public_db {
-  use serai_in_instructions_primitives::Batch;
+  use serai_primitives::instructions::Batch;
 
   use serai_db::{Get, DbTxn, create_db, db_channel};
 

processor/scanner/src/eventuality/db.rs

@@ -1,6 +1,7 @@
 use core::marker::PhantomData;
 
-use scale::Encode;
+use borsh::BorshSerialize;
+
 use serai_db::{Get, DbTxn, create_db};
 
 use primitives::{EncodableG, ReceivedOutput, Eventuality, EventualityTracker};
@@ -14,7 +15,7 @@ create_db!(
     // The latest block this task has handled which was notable
     LatestHandledNotableBlock: () -> u64,
 
-    SerializedEventualities: <K: Encode>(key: K) -> Vec<u8>,
+    SerializedEventualities: <K: BorshSerialize>(key: K) -> Vec<u8>,
 
     AccumulatedOutput: (id: &[u8]) -> (),
   }

processor/scanner/src/lib.rs

@@ -10,8 +10,10 @@ use group::GroupEncoding;
 use borsh::{BorshSerialize, BorshDeserialize};
 use serai_db::{Get, DbTxn, Db};
 
-use serai_primitives::{ExternalNetworkId, ExternalCoin, Amount};
+use serai_primitives::{
-use serai_coins_primitives::OutInstructionWithBalance;
+  network_id::ExternalNetworkId, coin::ExternalCoin, balance::Amount,
+  instructions::OutInstructionWithBalance,
+};
 
 use messages::substrate::ExecutedBatch;
 use primitives::{task::*, Address, ReceivedOutput, Block, Payment};

processor/scanner/src/report/db.rs

@@ -1,6 +1,6 @@
 use serai_db::{Get, DbTxn, create_db};
 
-use serai_validator_sets_primitives::Session;
+use serai_primitives::validator_sets::Session;
 
 create_db!(
   ScannerBatch {

processor/scanner/src/report/mod.rs

@@ -2,7 +2,7 @@ use core::{marker::PhantomData, future::Future};
 
 use serai_db::{DbTxn, Db};
 
-use serai_validator_sets_primitives::Session;
+use serai_primitives::validator_sets::Session;
 
 use primitives::task::{DoesNotError, ContinuallyRan};
 use crate::{
@@ -70,12 +70,12 @@ impl<D: Db, S: ScannerFeed> ContinuallyRan for ReportTask<D, S> {
           // Because this boolean was expanded, we lose short-circuiting. That's fine
           let handover_batch = last_session != session_to_sign_batch;
           let batch_after_handover_batch =
-            (last_session == session_to_sign_batch) && ((first_batch + 1) == batch.id);
+            (last_session == session_to_sign_batch) && ((first_batch + 1) == batch.id());
           if handover_batch || batch_after_handover_batch {
             let verified_prior_batch = substrate::last_acknowledged_batch::<S>(&txn)
-              // Since `batch.id = 0` in the Session(0)-never-published-a-Batch case, we don't
+              // Since `batch.id() = 0` in the Session(0)-never-published-a-Batch case, we don't
-              // check `last_acknowledged_batch >= (batch.id - 1)` but instead this
+              // check `last_acknowledged_batch >= (batch.id() - 1)` but instead this
-              .map(|last_acknowledged_batch| (last_acknowledged_batch + 1) >= batch.id)
+              .map(|last_acknowledged_batch| (last_acknowledged_batch + 1) >= batch.id())
               // We've never verified any Batches
               .unwrap_or(false);
             if !verified_prior_batch {
@@ -90,7 +90,7 @@ impl<D: Db, S: ScannerFeed> ContinuallyRan for ReportTask<D, S> {
             BatchDb::set_last_session_to_sign_batch_and_first_batch(
               &mut txn,
               session_to_sign_batch,
-              batch.id,
+              batch.id(),
             );
           }
         }

processor/scanner/src/scan/mod.rs

@@ -1,12 +1,12 @@
 use core::future::Future;
 use std::collections::HashMap;
 
-use scale::Decode;
+use borsh::BorshDeserialize;
+
 use serai_db::{Get, DbTxn, Db};
 
-use serai_in_instructions_primitives::{
+#[rustfmt::skip]
-  Shorthand, RefundableInInstruction, InInstruction, InInstructionWithBalance,
+use serai_primitives::instructions::{RefundableInInstruction, InInstruction, InInstructionWithBalance};
-};
 
 use primitives::{task::ContinuallyRan, OutputType, ReceivedOutput, Block};
 
@@ -55,26 +55,22 @@ fn in_instruction_from_output<S: ScannerFeed>(
   let presumed_origin = output.presumed_origin();
 
   let mut data = output.data();
-  let shorthand = match Shorthand::decode(&mut data) {
+  let instruction = match RefundableInInstruction::deserialize_reader(&mut data) {
-    Ok(shorthand) => shorthand,
-    Err(e) => {
-      log::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) => {
       log::info!(
-        "shorthand in output {} wasn't convertible to a RefundableInInstruction: {e:?}",
+        "data in output {} wasn't a valid `RefundableInInstruction`: {e:?}",
-        hex::encode(output.id())
+        hex::encode(output.id()),
       );
       return (presumed_origin, None);
     }
   };
 
   (
-    instruction.origin.and_then(|addr| AddressFor::<S>::try_from(addr).ok()).or(presumed_origin),
+    instruction
+      .return_address
+      .and_then(|addr| AddressFor::<S>::try_from(addr).ok())
+      .or(presumed_origin),
     Some(instruction.instruction),
   )
 }

processor/scanner/src/substrate/db.rs

@@ -5,7 +5,7 @@ use group::GroupEncoding;
 use borsh::{BorshSerialize, BorshDeserialize};
 use serai_db::{Get, DbTxn, create_db, db_channel};
 
-use serai_coins_primitives::OutInstructionWithBalance;
+use serai_primitives::instructions::OutInstructionWithBalance;
 
 use messages::substrate::ExecutedBatch;
 

processor/scanner/src/substrate/mod.rs

@@ -2,7 +2,7 @@ use core::{marker::PhantomData, future::Future};
 
 use serai_db::{Get, DbTxn, Db};
 
-use serai_coins_primitives::{OutInstruction, OutInstructionWithBalance};
+use serai_primitives::instructions::{OutInstruction, OutInstructionWithBalance};
 
 use messages::substrate::ExecutedBatch;
 use primitives::task::{DoesNotError, ContinuallyRan};
@@ -150,7 +150,7 @@ impl<D: Db, S: ScannerFeed> ContinuallyRan for SubstrateTask<D, S> {
 
                 if let Some(batch::ReturnInformation { address, balance }) = return_information {
                   burns.push(OutInstructionWithBalance {
-                    instruction: OutInstruction { address: address.into() },
+                    instruction: OutInstruction::Transfer(address.into()),
                     balance,
                   });
                 }

processor/scheduler/primitives/Cargo.toml

@@ -15,7 +15,7 @@ all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
 [package.metadata.cargo-machete]
-ignored = ["scale", "borsh"]
+ignored = ["borsh"]
 
 [lints]
 workspace = true
@@ -24,7 +24,6 @@ workspace = true
 ciphersuite = { path = "../../../crypto/ciphersuite", default-features = false, features = ["std"] }
 frost = { package = "modular-frost", path = "../../../crypto/frost", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 serai-db = { path = "../../../common/db" }

processor/scheduler/smart-contract/Cargo.toml

@@ -15,7 +15,7 @@ all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
 [package.metadata.cargo-machete]
-ignored = ["scale", "borsh"]
+ignored = ["borsh"]
 
 [lints]
 workspace = true
@@ -23,7 +23,6 @@ workspace = true
 [dependencies]
 group = { version = "0.13", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 serai-db = { path = "../../../common/db" }

processor/scheduler/utxo/primitives/src/lib.rs

@@ -4,7 +4,7 @@
 
 use core::{fmt::Debug, future::Future};
 
-use serai_primitives::Amount;
+use serai_primitives::balance::Amount;
 
 use primitives::{ReceivedOutput, Payment};
 use scanner::{ScannerFeed, KeyFor, AddressFor, OutputFor, EventualityFor, BlockFor};

processor/scheduler/utxo/primitives/src/tree.rs

@@ -1,6 +1,9 @@
 use borsh::{BorshSerialize, BorshDeserialize};
 
-use serai_primitives::{ExternalCoin, Amount, ExternalBalance};
+use serai_primitives::{
+  coin::ExternalCoin,
+  balance::{Amount, ExternalBalance},
+};
 
 use primitives::{Address, Payment};
 use scanner::ScannerFeed;

processor/scheduler/utxo/standard/Cargo.toml

@@ -15,7 +15,7 @@ all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
 [package.metadata.cargo-machete]
-ignored = ["scale", "borsh"]
+ignored = ["borsh"]
 
 [lints]
 workspace = true
@@ -23,7 +23,6 @@ workspace = true
 [dependencies]
 group = { version = "0.13", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 serai-primitives = { path = "../../../../substrate/primitives", default-features = false, features = ["std"] }

processor/scheduler/utxo/standard/src/db.rs

@@ -2,7 +2,10 @@ use core::marker::PhantomData;
 
 use group::GroupEncoding;
 
-use serai_primitives::{ExternalCoin, Amount, ExternalBalance};
+use serai_primitives::{
+  coin::ExternalCoin,
+  balance::{Amount, ExternalBalance},
+};
 
 use borsh::BorshDeserialize;
 use serai_db::{Get, DbTxn, create_db, db_channel};

processor/scheduler/utxo/standard/src/lib.rs

@@ -7,7 +7,10 @@ use std::collections::HashMap;
 
 use group::GroupEncoding;
 
-use serai_primitives::{ExternalCoin, Amount, ExternalBalance};
+use serai_primitives::{
+  coin::ExternalCoin,
+  balance::{Amount, ExternalBalance},
+};
 
 use serai_db::DbTxn;
 

processor/scheduler/utxo/transaction-chaining/Cargo.toml

@@ -15,7 +15,7 @@ all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
 [package.metadata.cargo-machete]
-ignored = ["scale", "borsh"]
+ignored = ["borsh"]
 
 [lints]
 workspace = true
@@ -23,7 +23,6 @@ workspace = true
 [dependencies]
 group = { version = "0.13", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 serai-primitives = { path = "../../../../substrate/primitives", default-features = false, features = ["std"] }

processor/scheduler/utxo/transaction-chaining/src/db.rs

@@ -2,7 +2,7 @@ use core::marker::PhantomData;
 
 use group::GroupEncoding;
 
-use serai_primitives::{ExternalCoin, Amount};
+use serai_primitives::{coin::ExternalCoin, balance::Amount};
 
 use serai_db::{Get, DbTxn, create_db};
 

processor/scheduler/utxo/transaction-chaining/src/lib.rs

@@ -7,7 +7,7 @@ use std::collections::HashMap;
 
 use group::GroupEncoding;
 
-use serai_primitives::{ExternalCoin, Amount};
+use serai_primitives::{coin::ExternalCoin, balance::Amount};
 
 use serai_db::DbTxn;
 

processor/signers/Cargo.toml

@@ -30,7 +30,6 @@ dalek-ff-group = { path = "../../crypto/dalek-ff-group", default-features = fals
 frost = { package = "modular-frost", path = "../../crypto/frost", default-features = false }
 frost-schnorrkel = { path = "../../crypto/schnorrkel", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["std"] }
 borsh = { version = "1", default-features = false, features = ["std", "derive", "de_strict_order"] }
 
 serai-primitives = { path = "../../substrate/primitives", default-features = false, features = ["std"] }
@@ -39,7 +38,7 @@ serai-db = { path = "../../common/db" }
 log = { version = "0.4", default-features = false, features = ["std"] }
 tokio = { version = "1", default-features = false, features = ["rt-multi-thread", "sync", "time", "macros"] }
 
-serai-cosign = { path = "../../coordinator/cosign" }
+serai-cosign = { package = "serai-cosign-types", path = "../../coordinator/cosign/types" }
 messages = { package = "serai-processor-messages", path = "../messages" }
 primitives = { package = "serai-processor-primitives", path = "../primitives" }
 scanner = { package = "serai-processor-scanner", path = "../scanner" }

processor/signers/src/batch/db.rs

@@ -1,5 +1,7 @@
-use serai_validator_sets_primitives::Session;
+use serai_primitives::{
-use serai_in_instructions_primitives::{Batch, SignedBatch};
+  validator_sets::Session,
+  instructions::{Batch, SignedBatch},
+};
 
 use serai_db::{Get, DbTxn, create_db};
 

processor/signers/src/batch/mod.rs

@@ -6,10 +6,7 @@ use ciphersuite::group::GroupEncoding;
 use dalek_ff_group::Ristretto;
 use frost::dkg::ThresholdKeys;
 
-use scale::Encode;
+use serai_primitives::{validator_sets::Session, instructions::SignedBatch};
-
-use serai_validator_sets_primitives::Session;
-use serai_in_instructions_primitives::{SignedBatch, batch_message};
 
 use serai_db::{Get, DbTxn, Db};
 
@@ -74,7 +71,7 @@ impl<D: Db, E: GroupEncoding> BatchSignerTask<D, E> {
         machines.push(WrappedSchnorrkelMachine::new(
           keys.clone(),
           b"substrate",
-          batch_message(&batch),
+          batch.publish_batch_message(),
         ));
       }
       attempt_manager.register(VariantSignId::Batch(id), machines);
@@ -100,14 +97,14 @@ impl<D: Db, E: Send + GroupEncoding> ContinuallyRan for BatchSignerTask<D, E> {
         iterated = true;
 
         // Save this to the database as a transaction to sign
-        let batch_hash = <[u8; 32]>::from(Blake2b::<U32>::digest(batch.encode()));
+        let batch_hash = <[u8; 32]>::from(Blake2b::<U32>::digest(borsh::to_vec(&batch).unwrap()));
         self.active_signing_protocols.insert(batch_hash);
         ActiveSigningProtocols::set(
           &mut txn,
           self.session,
           &self.active_signing_protocols.iter().copied().collect(),
         );
-        BatchHash::set(&mut txn, batch.id, &batch_hash);
+        BatchHash::set(&mut txn, batch.id(), &batch_hash);
         Batches::set(&mut txn, batch_hash, &batch);
 
         let mut machines = Vec::with_capacity(self.keys.len());
@@ -116,7 +113,7 @@ impl<D: Db, E: Send + GroupEncoding> ContinuallyRan for BatchSignerTask<D, E> {
           machines.push(WrappedSchnorrkelMachine::new(
             keys.clone(),
             b"substrate",
-            batch_message(&batch),
+            batch.publish_batch_message(),
           ));
         }
         for msg in self.attempt_manager.register(VariantSignId::Batch(batch_hash), machines) {
@@ -160,8 +157,8 @@ impl<D: Db, E: Send + GroupEncoding> ContinuallyRan for BatchSignerTask<D, E> {
         // Update the last acknowledged Batch
         {
           let last_acknowledged = LastAcknowledgedBatch::get(&txn);
-          if Some(batch.id) > last_acknowledged {
+          if Some(batch.id()) > last_acknowledged {
-            LastAcknowledgedBatch::set(&mut txn, &batch.id);
+            LastAcknowledgedBatch::set(&mut txn, &batch.id());
           }
         }
 
@@ -174,7 +171,7 @@ impl<D: Db, E: Send + GroupEncoding> ContinuallyRan for BatchSignerTask<D, E> {
         );
 
         // Clean up SignedBatches
-        SignedBatches::del(&mut txn, batch.id);
+        SignedBatches::del(&mut txn, batch.id());
 
         // We retire with a txn so we either successfully flag this Batch as acknowledged, and
         // won't re-register it (making this retire safe), or we don't flag it, meaning we will
@@ -203,7 +200,7 @@ impl<D: Db, E: Send + GroupEncoding> ContinuallyRan for BatchSignerTask<D, E> {
             let batch =
               Batches::get(&txn, id).expect("signed a Batch we didn't save to the database");
             let signed_batch = SignedBatch { batch, signature: signature.into() };
-            SignedBatches::set(&mut txn, signed_batch.batch.id, &signed_batch);
+            SignedBatches::set(&mut txn, signed_batch.batch.id(), &signed_batch);
           }
         }
 

processor/signers/src/coordinator/mod.rs

@@ -1,6 +1,6 @@
 use core::future::Future;
 
-use serai_primitives::Signature;
+use serai_primitives::crypto::Signature;
 
 use serai_db::{DbTxn, Db};
 
@@ -140,7 +140,7 @@ impl<D: Db, C: Coordinator> ContinuallyRan for CoordinatorTask<D, C> {
         let mut next_batch = last_batch.map(|id| id + 1).unwrap_or(0);
         while let Some(batch) = crate::batch::signed_batch(&txn, next_batch) {
           iterated = true;
-          db::LastPublishedBatch::set(&mut txn, &batch.batch.id);
+          db::LastPublishedBatch::set(&mut txn, &batch.batch.id());
           self
             .coordinator
             .publish_signed_batch(batch)

processor/signers/src/cosign/db.rs

@@ -1,4 +1,4 @@
-use serai_validator_sets_primitives::Session;
+use serai_primitives::validator_sets::Session;
 
 use serai_db::{Get, DbTxn, create_db};
 

processor/signers/src/cosign/mod.rs

@@ -3,9 +3,7 @@ use core::future::Future;
 use dalek_ff_group::Ristretto;
 use frost::dkg::ThresholdKeys;
 
-use scale::Encode;
+use serai_primitives::{crypto::Signature, validator_sets::Session};
-use serai_primitives::Signature;
-use serai_validator_sets_primitives::Session;
 
 use serai_db::{DbTxn, Db};
 
@@ -127,7 +125,7 @@ impl<D: Db> ContinuallyRan for CosignerTask<D> {
             LatestCosigned::set(&mut txn, self.session, &cosign.block_number);
             let cosign = SignedCosign {
               cosign,
-              signature: Signature::from(signature).encode().try_into().unwrap(),
+              signature: borsh::to_vec(&Signature::from(signature)).unwrap().try_into().unwrap(),
             };
             // Send the cosign
             Cosign::send(&mut txn, self.session, &cosign);

processor/signers/src/db.rs

@@ -1,4 +1,4 @@
-use serai_validator_sets_primitives::{Session, SlashReport as SlashReportStruct};
+use serai_primitives::validator_sets::{Session, SlashReport as SlashReportStruct};
 
 use serai_db::{Get, DbTxn, create_db, db_channel};
 

processor/signers/src/lib.rs

@@ -11,9 +11,11 @@ use ciphersuite::{group::GroupEncoding, Ciphersuite};
 use dalek_ff_group::Ristretto;
 use frost::dkg::ThresholdKeys;
 
-use serai_primitives::Signature;
+use serai_primitives::{
-use serai_validator_sets_primitives::{Session, SlashReport};
+  crypto::Signature,
-use serai_in_instructions_primitives::SignedBatch;
+  validator_sets::{Session, SlashReport},
+  instructions::SignedBatch,
+};
 
 use serai_db::{DbTxn, Db};
 

processor/signers/src/slash_report.rs

@@ -3,8 +3,7 @@ use core::{marker::PhantomData, future::Future};
 use dalek_ff_group::Ristretto;
 use frost::dkg::ThresholdKeys;
 
-use serai_primitives::Signature;
+use serai_primitives::{crypto::Signature, validator_sets::Session};
-use serai_validator_sets_primitives::Session;
 
 use serai_db::{DbTxn, Db};
 

processor/signers/src/transaction/db.rs

@@ -1,4 +1,4 @@
-use serai_validator_sets_primitives::Session;
+use serai_primitives::validator_sets::Session;
 
 use serai_db::{Get, DbTxn, create_db};
 

processor/signers/src/transaction/mod.rs

@@ -6,7 +6,7 @@ use std::{
 
 use frost::dkg::ThresholdKeys;
 
-use serai_validator_sets_primitives::Session;
+use serai_primitives::validator_sets::Session;
 
 use serai_db::{DbTxn, Db};
 

substrate/client/Cargo.toml

@@ -23,7 +23,7 @@ thiserror = { version = "2", default-features = false, optional = true }
 bitvec = { version = "1", default-features = false, features = ["alloc", "serde"] }
 
 hex = "0.4"
-scale = { package = "parity-scale-codec", version = "3" }
+scale = { package = "parity-scale-codec", version = "3", optional = true }
 borsh = { version = "1", features = ["derive"] }
 serde = { version = "1", features = ["derive"], optional = true }
 serde_json = { version = "1", optional = true }
@@ -64,7 +64,7 @@ dockertest = "0.5"
 serai-docker-tests = { path = "../../tests/docker" }
 
 [features]
-serai = ["thiserror/std", "serde", "serde_json", "multiaddr", "sp-core", "sp-runtime", "frame-system", "simple-request"]
+serai = ["thiserror/std", "scale", "serde", "serde_json", "multiaddr", "sp-core", "sp-runtime", "frame-system", "simple-request"]
 
 networks = []
 bitcoin = ["networks", "dep:bitcoin"]
@@ -73,4 +73,4 @@ monero = ["networks", "dalek-ff-group", "ciphersuite", "monero-address"]
 
 # Assumes the default usage is to use Serai as a DEX, which doesn't actually
 # require connecting to a Serai node
-default = ["bitcoin", "monero"]
+default = ["bitcoin", "ethereum", "monero"]

substrate/client/src/lib.rs

@@ -8,20 +8,6 @@ pub use serai::*;
 
 #[cfg(not(feature = "serai"))]
 pub use serai_abi::primitives;
-#[cfg(not(feature = "serai"))]
-mod other_primitives {
-  pub mod coins {
-    pub use serai_abi::coins::primitives;
-  }
-  pub mod validator_sets {
-    pub use serai_abi::validator_sets::primitives;
-  }
-  pub mod in_instructions {
-    pub use serai_abi::in_instructions::primitives;
-  }
-}
-#[cfg(not(feature = "serai"))]
-pub use other_primitives::*;
 
 #[cfg(test)]
 mod tests;

substrate/client/src/networks/bitcoin.rs

@@ -1,6 +1,5 @@
 use core::{str::FromStr, fmt};
 
-use scale::{Encode, Decode};
 use borsh::{BorshSerialize, BorshDeserialize};
 
 use bitcoin::{
@@ -11,10 +10,10 @@ use bitcoin::{
   address::{AddressType, NetworkChecked, Address as BAddress},
 };
 
-use crate::primitives::ExternalAddress;
+use crate::primitives::address::ExternalAddress;
 
 // SCALE-encodable representation of Bitcoin addresses, used internally.
-#[derive(Clone, PartialEq, Eq, Debug, Encode, Decode, BorshSerialize, BorshDeserialize)]
+#[derive(Clone, PartialEq, Eq, Debug, BorshSerialize, BorshDeserialize)]
 enum EncodedAddress {
   P2PKH([u8; 20]),
   P2SH([u8; 20]),
@@ -124,7 +123,7 @@ impl TryFrom<ExternalAddress> for Address {
   fn try_from(data: ExternalAddress) -> Result<Address, ()> {
     // Decode as an EncodedAddress, then map to a ScriptBuf
     let mut data = data.as_ref();
-    let encoded = EncodedAddress::decode(&mut data).map_err(|_| ())?;
+    let encoded = EncodedAddress::deserialize_reader(&mut data).map_err(|_| ())?;
     if !data.is_empty() {
       Err(())?
     }
@@ -141,8 +140,8 @@ impl From<Address> for EncodedAddress {
 
 impl From<Address> for ExternalAddress {
   fn from(addr: Address) -> ExternalAddress {
-    // Safe since all variants are fixed-length and fit into MAX_ADDRESS_LEN
+    // Safe since all variants are fixed-length and fit into `MAX_ADDRESS_LEN`
-    ExternalAddress::new(EncodedAddress::from(addr).encode()).unwrap()
+    ExternalAddress::try_from(borsh::to_vec(&EncodedAddress::from(addr)).unwrap()).unwrap()
   }
 }
 

substrate/client/src/networks/ethereum.rs

@@ -3,7 +3,7 @@ use std::io::Read;
 
 use borsh::{BorshSerialize, BorshDeserialize};
 
-use crate::primitives::{MAX_ADDRESS_LEN, ExternalAddress};
+use crate::primitives::address::ExternalAddress;
 
 /// THe maximum amount of gas an address is allowed to specify as its gas limit.
 ///
@@ -33,7 +33,8 @@ impl ContractDeployment {
     }
 
     // The max address length, minus the type byte, minus the size of the gas
-    const MAX_CODE_LEN: usize = (MAX_ADDRESS_LEN as usize) - (1 + core::mem::size_of::<u32>());
+    const MAX_CODE_LEN: usize =
+      (ExternalAddress::MAX_LEN as usize) - (1 + core::mem::size_of::<u32>());
     if code.len() > MAX_CODE_LEN {
       None?;
     }
@@ -111,7 +112,7 @@ impl From<Address> for ExternalAddress {
       }
     }
     // We only construct addresses whose code is small enough this can safely be constructed
-    ExternalAddress::new(res).unwrap()
+    ExternalAddress::try_from(res).unwrap()
   }
 }
 

substrate/client/src/networks/monero.rs

@@ -5,7 +5,7 @@ use ciphersuite::Ciphersuite;
 
 use monero_address::{Network, AddressType as MoneroAddressType, MoneroAddress};
 
-use crate::primitives::ExternalAddress;
+use crate::primitives::address::ExternalAddress;
 
 #[derive(Clone, Copy, PartialEq, Eq, Debug)]
 enum AddressType {
@@ -123,7 +123,7 @@ impl TryFrom<ExternalAddress> for Address {
 impl From<Address> for ExternalAddress {
   fn from(address: Address) -> ExternalAddress {
     // This is 65 bytes which is less than MAX_ADDRESS_LEN
-    ExternalAddress::new(borsh::to_vec(&address).unwrap()).unwrap()
+    ExternalAddress::try_from(borsh::to_vec(&address).unwrap()).unwrap()
   }
 }
 

substrate/primitives/Cargo.toml

@@ -25,16 +25,18 @@ scale-info = { version = "2", default-features = false, features = ["derive"], o
 sp-core = { git = "https://github.com/serai-dex/patch-polkadot-sdk", rev = "2bfdaed4b3614de2fe7d10e4ece3e6a912833e90", default-features = false }
 
 ciphersuite = { path = "../../crypto/ciphersuite", default-features = false, features = ["alloc"] }
-dalek-ff-group = { path = "../../crypto/dalek-ff-group", default-features = false }
+dalek-ff-group = { path = "../../crypto/dalek-ff-group", default-features = false, features = ["alloc"] }
 dkg = { package = "dkg-musig", path = "../../crypto/dkg/musig", default-features = false }
 
+schnorrkel = { version = "0.11", default-features = false }
+
 bech32 = { version = "0.11", default-features = false }
 
 [dev-dependencies]
 rand_core = { version = "0.6", default-features = false, features = ["std"] }
 
 [features]
-std = ["zeroize/std", "borsh/std", "bitvec/std", "scale/std", "scale-info/std", "sp-core/std", "ciphersuite/std", "dalek-ff-group/std", "dkg/std", "bech32/std"]
+std = ["zeroize/std", "borsh/std", "bitvec/std", "scale?/std", "scale-info?/std", "sp-core/std", "ciphersuite/std", "dalek-ff-group/std", "dkg/std", "schnorrkel/std", "bech32/std"]
 serde = []
 non_canonical_scale_derivations = ["scale", "scale-info"]
 default = ["std"]

substrate/primitives/src/address.rs

@@ -1,3 +1,4 @@
+use core::convert::AsRef;
 use alloc::vec::Vec;
 
 use zeroize::Zeroize;
@@ -150,13 +151,18 @@ impl TryFrom<Vec<u8>> for ExternalAddress {
     vec.try_into().map(ExternalAddress).map_err(|_| FromVecError::TooLong)
   }
 }
-
 impl From<ExternalAddress> for Vec<u8> {
   fn from(ext: ExternalAddress) -> Vec<u8> {
     ext.0.into_inner()
   }
 }
 
+impl AsRef<[u8]> for ExternalAddress {
+  fn as_ref(&self) -> &[u8] {
+    self.0.as_ref()
+  }
+}
+
 impl zeroize::Zeroize for ExternalAddress {
   fn zeroize(&mut self) {
     self.0.as_mut().zeroize();

substrate/primitives/src/crypto.rs

@@ -40,6 +40,11 @@ impl From<Public> for sp_core::sr25519::Public {
   )
 )]
 pub struct Signature(pub [u8; 64]);
+impl From<schnorrkel::Signature> for Signature {
+  fn from(signature: schnorrkel::Signature) -> Self {
+    Self(signature.to_bytes())
+  }
+}
 impl From<sp_core::sr25519::Signature> for Signature {
   fn from(signature: sp_core::sr25519::Signature) -> Self {
     Self(signature.0)
@@ -71,6 +76,12 @@ pub struct ExternalKey(
   pub BoundedVec<u8, ConstU32<{ ExternalKey::MAX_LEN }>>,
 );
 
+impl AsRef<[u8]> for ExternalKey {
+  fn as_ref(&self) -> &[u8] {
+    self.0.as_ref()
+  }
+}
+
 impl Zeroize for ExternalKey {
   fn zeroize(&mut self) {
     self.0.as_mut().zeroize();

substrate/primitives/src/instructions/in/batch.rs

@@ -93,6 +93,7 @@ impl BorshDeserialize for Batch {
 }
 
 /// An error incurred while pushing an instruction onto a `Batch`.
+#[derive(Debug)]
 pub enum PushInstructionError {
   /// The Batch's max size was exceeded.
   MaxSizeExceeded,

substrate/primitives/src/instructions/in/mod.rs

@@ -80,7 +80,7 @@ pub struct RefundableInInstruction {
 #[derive(Clone, PartialEq, Eq, Debug, Zeroize, BorshSerialize, BorshDeserialize)]
 pub struct InInstructionWithBalance {
   /// The instruction on how to handle coins in.
-  pub instruction: OutInstruction,
+  pub instruction: InInstruction,
   /// The coins in.
   pub balance: ExternalBalance,
 }

substrate/primitives/src/instructions/mod.rs

@@ -1,5 +1,8 @@
 mod r#in;
-pub use r#in::{InInstruction, InInstructionWithBalance, PushInstructionError, Batch, SignedBatch};
+pub use r#in::{
+  InInstruction, InInstructionWithBalance, RefundableInInstruction, PushInstructionError, Batch,
+  SignedBatch,
+};
 
 mod out;
 pub use out::{OutInstruction, OutInstructionWithBalance};

substrate/primitives/src/network_id.rs

@@ -62,11 +62,11 @@ impl ExternalNetworkId {
   }
 
   /// The coins native to this network.
-  pub fn coins(&self) -> &'static [ExternalCoin] {
+  pub fn coins(&self) -> impl Iterator<Item = ExternalCoin> {
     match self {
-      Self::Bitcoin => &[ExternalCoin::Bitcoin],
+      Self::Bitcoin => [ExternalCoin::Bitcoin].as_slice().iter().copied(),
-      Self::Ethereum => &[ExternalCoin::Ether, ExternalCoin::Dai],
+      Self::Ethereum => [ExternalCoin::Ether, ExternalCoin::Dai].as_slice().iter().copied(),
-      Self::Monero => &[ExternalCoin::Monero],
+      Self::Monero => [ExternalCoin::Monero].as_slice().iter().copied(),
     }
   }
 }
@@ -119,11 +119,11 @@ impl NetworkId {
 
   /// The coins native to this network.
   pub fn coins(self) -> impl Iterator<Item = Coin> {
-    let (coins, external_coins): (&[Coin], &[ExternalCoin]) = match self {
+    let (coins, external_coins): (&[Coin], _) = match self {
-      NetworkId::Serai => (&[Coin::Serai], &[]),
+      NetworkId::Serai => (&[Coin::Serai], None),
-      NetworkId::External(ext) => (&[], ext.coins()),
+      NetworkId::External(ext) => (&[], Some(ext.coins())),
     };
-    coins.iter().copied().chain(external_coins.iter().copied().map(Into::into))
+    coins.iter().copied().chain(external_coins.into_iter().flatten().map(Into::into))
   }
 }