add initial reward era test

Cargo.lock

@@ -7652,6 +7652,7 @@ dependencies = [
  "parity-scale-codec",
  "scale-info",
  "serai-coins-primitives",
+ "serai-emissions-primitives",
  "serai-genesis-liquidity-primitives",
  "serai-in-instructions-primitives",
  "serai-primitives",
@@ -7817,7 +7818,6 @@ version = "0.1.0"
 dependencies = [
  "frame-support",
  "frame-system",
- "pallet-babe",
  "parity-scale-codec",
  "scale-info",
  "serai-coins-pallet",
@@ -7828,7 +7828,6 @@ dependencies = [
  "serai-validator-sets-pallet",
  "serai-validator-sets-primitives",
  "sp-runtime",
- "sp-session",
  "sp-std",
 ]
 

substrate/abi/Cargo.toml

@@ -32,6 +32,7 @@ serai-primitives = { path = "../primitives", version = "0.1" }
 serai-coins-primitives = { path = "../coins/primitives", version = "0.1" }
 serai-validator-sets-primitives = { path = "../validator-sets/primitives", version = "0.1" }
 serai-genesis-liquidity-primitives = { path = "../genesis-liquidity/primitives", version = "0.1" }
+serai-emissions-primitives = { path = "../emissions/primitives", version = "0.1" }
 serai-in-instructions-primitives = { path = "../in-instructions/primitives", version = "0.1" }
 serai-signals-primitives = { path = "../signals/primitives", version = "0.1" }
 

substrate/abi/src/emissions.rs

@@ -1,3 +1,5 @@
+pub use serai_emissions_primitives as primitives;
+
 #[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))]

substrate/client/src/serai/dex.rs

@@ -7,6 +7,8 @@ use crate::{SeraiError, hex_decode, TemporalSerai};
 
 pub type DexEvent = serai_abi::dex::Event;
 
+const PALLET: &str = "Dex";
+
 #[derive(Clone, Copy)]
 pub struct SeraiDex<'a>(pub(crate) &'a TemporalSerai<'a>);
 impl<'a> SeraiDex<'a> {
@@ -76,4 +78,8 @@ impl<'a> SeraiDex<'a> {
       .map_err(|e| SeraiError::ErrorInResponse(e.to_string()))?;
     Ok(resut.map(|amounts| (Amount(amounts.0), Amount(amounts.1))))
   }
+
+  pub async fn oracle_value(&self, coin: Coin) -> Result<Option<Amount>, SeraiError> {
+    self.0.storage(PALLET, "SecurityOracleValue", coin).await
+  }
 }

substrate/client/tests/common/genesis_liquidity.rs

@@ -0,0 +1,227 @@
+use std::{time::Duration, collections::HashMap};
+
+use rand_core::{RngCore, OsRng};
+use zeroize::Zeroizing;
+
+use ciphersuite::{Ciphersuite, Ristretto};
+use frost::dkg::musig::musig;
+use schnorrkel::Schnorrkel;
+
+use serai_client::{
+  genesis_liquidity::{
+    primitives::{GENESIS_LIQUIDITY_ACCOUNT, GENESIS_SRI},
+    SeraiGenesisLiquidity,
+  },
+  validator_sets::primitives::{musig_context, Session, ValidatorSet},
+};
+
+use serai_abi::{
+  genesis_liquidity::primitives::{set_initial_price_message, Prices},
+  primitives::COINS,
+};
+
+use sp_core::{sr25519::Signature, Pair as PairTrait};
+
+use serai_client::{
+  primitives::{
+    Amount, NetworkId, Coin, Balance, BlockHash, SeraiAddress, insecure_pair_from_name,
+  },
+  in_instructions::primitives::{InInstruction, InInstructionWithBalance, Batch},
+  Serai,
+};
+
+use crate::common::{in_instructions::provide_batch, tx::publish_tx};
+
+#[allow(dead_code)]
+pub async fn test_genesis_liquidity(serai: Serai) {
+  // amounts
+  let amounts = vec![
+    Amount(5_53246991),
+    Amount(3_14562819),
+    Amount(9_33648912),
+    Amount(150_873639000000),
+    Amount(248_665228000000),
+    Amount(451_765529000000),
+  ];
+
+  // addresses
+  let mut btc_addresses = vec![];
+  let mut xmr_addresses = vec![];
+  let addr_count = amounts.len();
+  for (i, amount) in amounts.into_iter().enumerate() {
+    let mut address = SeraiAddress::new([0; 32]);
+    OsRng.fill_bytes(&mut address.0);
+    if i < addr_count / 2 {
+      btc_addresses.push((address, amount));
+    } else {
+      xmr_addresses.push((address, amount));
+    }
+  }
+  btc_addresses.sort_by(|a1, a2| a1.0.cmp(&a2.0));
+  xmr_addresses.sort_by(|a1, a2| a1.0.cmp(&a2.0));
+
+  // btc batch
+  let mut block_hash = BlockHash([0; 32]);
+  OsRng.fill_bytes(&mut block_hash.0);
+  let btc_ins = btc_addresses
+    .iter()
+    .map(|(addr, amount)| InInstructionWithBalance {
+      instruction: InInstruction::GenesisLiquidity(*addr),
+      balance: Balance { coin: Coin::Bitcoin, amount: *amount },
+    })
+    .collect::<Vec<_>>();
+  let batch =
+    Batch { network: NetworkId::Bitcoin, id: 0, block: block_hash, instructions: btc_ins };
+  provide_batch(&serai, batch).await;
+
+  // xmr batch
+  let mut block_hash = BlockHash([0; 32]);
+  OsRng.fill_bytes(&mut block_hash.0);
+  let xmr_ins = xmr_addresses
+    .iter()
+    .map(|(addr, amount)| InInstructionWithBalance {
+      instruction: InInstruction::GenesisLiquidity(*addr),
+      balance: Balance { coin: Coin::Monero, amount: *amount },
+    })
+    .collect::<Vec<_>>();
+  let batch = Batch { network: NetworkId::Monero, id: 0, block: block_hash, instructions: xmr_ins };
+  provide_batch(&serai, batch).await;
+
+  // set prices
+  let prices = Prices { bitcoin: 10u64.pow(8), monero: 184100, ethereum: 4785000, dai: 1500 };
+  set_prices(&serai, &prices).await;
+
+  // wait until genesis ends..
+  tokio::time::timeout(tokio::time::Duration::from_secs(300), async {
+    while serai.latest_finalized_block().await.unwrap().number() < 25 {
+      tokio::time::sleep(Duration::from_secs(6)).await;
+    }
+  })
+  .await
+  .unwrap();
+
+  // check total SRI supply is +100M
+  let last_block = serai.latest_finalized_block().await.unwrap().hash();
+  let serai = serai.as_of(last_block);
+  // Check balance instead of supply
+  let sri = serai.coins().coin_supply(Coin::Serai).await.unwrap();
+  // there are 6 endowed accounts in dev-net. Take this into consideration when checking
+  // for the total sri minted at this time.
+  let endowed_amount: u64 = 1 << 60;
+  let total_sri = (6 * endowed_amount) + GENESIS_SRI;
+  assert_eq!(sri, Amount(total_sri));
+
+  // check genesis account has no coins, all transferred to pools.
+  for coin in COINS {
+    let amount = serai.coins().coin_balance(coin, GENESIS_LIQUIDITY_ACCOUNT).await.unwrap();
+    assert_eq!(amount.0, 0);
+  }
+
+  // check pools has proper liquidity
+  let pool_btc = btc_addresses.iter().fold(0u128, |acc, value| acc + u128::from(value.1 .0));
+  let pool_xmr = xmr_addresses.iter().fold(0u128, |acc, value| acc + u128::from(value.1 .0));
+
+  let pool_btc_value = (pool_btc * u128::from(prices.bitcoin)) / 10u128.pow(8);
+  let pool_xmr_value = (pool_xmr * u128::from(prices.monero)) / 10u128.pow(12);
+  let total_value = pool_btc_value + pool_xmr_value;
+
+  // calculated distributed SRI. We know that xmr is at the end of COINS array
+  // so it will be approximated to roof instead of floor after integer division.
+  let btc_sri = (pool_btc_value * u128::from(GENESIS_SRI)) / total_value;
+  let xmr_sri = ((pool_xmr_value * u128::from(GENESIS_SRI)) / total_value) + 1;
+
+  let btc_reserves = serai.dex().get_reserves(Coin::Bitcoin, Coin::Serai).await.unwrap().unwrap();
+  assert_eq!(u128::from(btc_reserves.0 .0), pool_btc);
+  assert_eq!(u128::from(btc_reserves.1 .0), btc_sri);
+
+  let xmr_reserves = serai.dex().get_reserves(Coin::Monero, Coin::Serai).await.unwrap().unwrap();
+  assert_eq!(u128::from(xmr_reserves.0 .0), pool_xmr);
+  assert_eq!(u128::from(xmr_reserves.1 .0), xmr_sri);
+
+  // check each btc liq provider got liq tokens proportional to their value
+  let btc_liq_token_supply = u128::from(
+    serai
+      .liquidity_tokens()
+      .token_balance(Coin::Bitcoin, GENESIS_LIQUIDITY_ACCOUNT)
+      .await
+      .unwrap()
+      .0,
+  );
+  let mut total_tokens_this_coin: u128 = 0;
+  for (i, (addr, amount)) in btc_addresses.iter().enumerate() {
+    let addr_value = (u128::from(amount.0) * u128::from(prices.bitcoin)) / 10u128.pow(8);
+    let addr_liq_tokens = if i == btc_addresses.len() - 1 {
+      btc_liq_token_supply - total_tokens_this_coin
+    } else {
+      (addr_value * btc_liq_token_supply) / pool_btc_value
+    };
+
+    let addr_actual_token_amount =
+      serai.genesis_liquidity().liquidity_tokens(addr, Coin::Bitcoin).await.unwrap();
+
+    assert_eq!(addr_liq_tokens, addr_actual_token_amount.0.into());
+    total_tokens_this_coin += addr_liq_tokens;
+  }
+
+  // check each xmr liq provider got liq tokens proportional to their value
+  let xmr_liq_token_supply = u128::from(
+    serai
+      .liquidity_tokens()
+      .token_balance(Coin::Monero, GENESIS_LIQUIDITY_ACCOUNT)
+      .await
+      .unwrap()
+      .0,
+  );
+  total_tokens_this_coin = 0;
+  for (i, (addr, amount)) in xmr_addresses.iter().enumerate() {
+    let addr_value = (u128::from(amount.0) * u128::from(prices.monero)) / 10u128.pow(12);
+    let addr_liq_tokens = if i == xmr_addresses.len() - 1 {
+      xmr_liq_token_supply - total_tokens_this_coin
+    } else {
+      (addr_value * xmr_liq_token_supply) / pool_xmr_value
+    };
+
+    let addr_actual_token_amount =
+      serai.genesis_liquidity().liquidity_tokens(addr, Coin::Monero).await.unwrap();
+
+    assert_eq!(addr_liq_tokens, addr_actual_token_amount.0.into());
+    total_tokens_this_coin += addr_liq_tokens;
+  }
+
+  // TODO: remove the liq before/after genesis ended.
+}
+
+#[allow(dead_code)]
+async fn set_prices(serai: &Serai, prices: &Prices) {
+  // prepare a Musig tx to set the initial prices
+  let pair = insecure_pair_from_name("Alice");
+  let public = pair.public();
+  let set = ValidatorSet { session: Session(0), network: NetworkId::Serai };
+
+  let public_key = <Ristretto as Ciphersuite>::read_G::<&[u8]>(&mut public.0.as_ref()).unwrap();
+  let secret_key = <Ristretto as Ciphersuite>::read_F::<&[u8]>(
+    &mut pair.as_ref().secret.to_bytes()[.. 32].as_ref(),
+  )
+  .unwrap();
+
+  assert_eq!(Ristretto::generator() * secret_key, public_key);
+  let threshold_keys =
+    musig::<Ristretto>(&musig_context(set), &Zeroizing::new(secret_key), &[public_key]).unwrap();
+
+  let sig = frost::tests::sign_without_caching(
+    &mut OsRng,
+    frost::tests::algorithm_machines(
+      &mut OsRng,
+      &Schnorrkel::new(b"substrate"),
+      &HashMap::from([(threshold_keys.params().i(), threshold_keys.into())]),
+    ),
+    &set_initial_price_message(&set, prices),
+  );
+
+  // set initial prices
+  let _ = publish_tx(
+    serai,
+    &SeraiGenesisLiquidity::set_initial_price(*prices, Signature(sig.to_bytes())),
+  )
+  .await;
+}

substrate/client/tests/common/mod.rs

@@ -2,6 +2,7 @@ pub mod tx;
 pub mod validator_sets;
 pub mod in_instructions;
 pub mod dex;
+pub mod genesis_liquidity;
 
 #[macro_export]
 macro_rules! serai_test {

substrate/client/tests/emissions.rs

@@ -0,0 +1,141 @@
+use std::{time::Duration, collections::HashMap};
+
+use serai_client::TemporalSerai;
+
+use serai_abi::{
+  emissions::primitives::INITIAL_REWARD_PER_BLOCK,
+  primitives::{Coin, COINS, NETWORKS},
+};
+
+use serai_client::{
+  primitives::{Amount, NetworkId, Balance},
+  Serai,
+};
+
+mod common;
+use common::genesis_liquidity::test_genesis_liquidity;
+
+serai_test_fast_epoch!(
+  emissions: (|serai: Serai| async move {
+    test_emissions(serai).await;
+  })
+);
+
+async fn test_emissions(serai: Serai) {
+  // provide some genesis liquidity
+  test_genesis_liquidity(serai.clone()).await;
+
+  let mut current_stake = HashMap::new();
+  for n in NETWORKS {
+    let stake = serai
+      .as_of_latest_finalized_block()
+      .await
+      .unwrap()
+      .validator_sets()
+      .total_allocated_stake(n)
+      .await
+      .unwrap()
+      .unwrap_or(Amount(0))
+      .0;
+    current_stake.insert(n, stake);
+  }
+
+  // wait until we have at least 1 session, epoch time is half an hour with the fast epoch
+  // feature, so lets wait double that.
+  tokio::time::timeout(tokio::time::Duration::from_secs(60 * 3), async {
+    while serai
+      .as_of_latest_finalized_block()
+      .await
+      .unwrap()
+      .validator_sets()
+      .session(NetworkId::Serai)
+      .await
+      .unwrap()
+      .unwrap()
+      .0 <
+      1
+    {
+      tokio::time::sleep(Duration::from_secs(6)).await;
+    }
+  })
+  .await
+  .unwrap();
+
+  let last_block = serai.latest_finalized_block().await.unwrap();
+  let serai_latest = serai.as_of(last_block.hash());
+
+  // we should be in the initial period, so calculate how much each network supposedly get..
+  // we can check the supply to see how much coin hence liability we have.
+  let mut distances: HashMap<NetworkId, u64> = HashMap::new();
+  let mut total_distance = 0;
+  for coin in COINS {
+    if coin == Coin::Serai {
+      continue;
+    }
+
+    let amount = serai_latest.coins().coin_supply(coin).await.unwrap();
+    let required = required_stake(&serai_latest, Balance { coin, amount }).await;
+    let mut current = *current_stake.get(&coin.network()).unwrap();
+    if current > required {
+      current = required;
+    }
+
+    let distance = required - current;
+    total_distance += distance;
+
+    distances.insert(
+      coin.network(),
+      distances.get(&coin.network()).unwrap_or(&0).saturating_add(distance),
+    );
+  }
+
+  // add serai network portion(20%)
+  let new_total_distance = total_distance.saturating_mul(10) / 8;
+  distances.insert(NetworkId::Serai, new_total_distance - total_distance);
+  total_distance = new_total_distance;
+
+  // since we should be in the first block after the first epoch, block number should also
+  // give us the block count.
+  let block_count = last_block.number();
+  let reward_this_epoch = block_count * INITIAL_REWARD_PER_BLOCK;
+
+  let reward_per_network = distances
+    .into_iter()
+    .map(|(n, distance)| {
+      let reward = u64::try_from(
+        u128::from(reward_this_epoch).saturating_mul(u128::from(distance)) /
+          u128::from(total_distance),
+      )
+      .unwrap();
+      (n, reward)
+    })
+    .collect::<HashMap<NetworkId, u64>>();
+
+  for (n, reward) in reward_per_network {
+    let stake =
+      serai_latest.validator_sets().total_allocated_stake(n).await.unwrap().unwrap_or(Amount(0)).0;
+
+    // the reward should have been automatically staked for the network
+    assert_eq!(stake, *current_stake.get(&n).unwrap() + reward);
+  }
+
+  // TODO: check stake per address
+}
+
+/// Returns the required stake in terms SRI for a given `Balance`.
+async fn required_stake(serai: &TemporalSerai<'_>, balance: Balance) -> u64 {
+  // This is inclusive to an increase in accuracy
+  let sri_per_coin = serai.dex().oracle_value(balance.coin).await.unwrap().unwrap_or(Amount(0));
+
+  // See dex-pallet for the reasoning on these
+  let coin_decimals = balance.coin.decimals().max(5);
+  let accuracy_increase = u128::from(u64::pow(10, coin_decimals));
+
+  let total_coin_value =
+    u64::try_from(u128::from(balance.amount.0) * u128::from(sri_per_coin.0) / accuracy_increase)
+      .unwrap_or(u64::MAX);
+
+  // required stake formula (COIN_VALUE * 1.5) + margin(20%)
+  let required_stake = total_coin_value.saturating_mul(3).saturating_div(2);
+  required_stake.saturating_add(total_coin_value.saturating_div(5))
+}

substrate/client/tests/genesis_liquidity.rs

@@ -1,232 +1,10 @@
-use std::{time::Duration, collections::HashMap};
-
-use rand_core::{RngCore, OsRng};
-use zeroize::Zeroizing;
-
-use ciphersuite::{Ciphersuite, Ristretto};
-use frost::dkg::musig::musig;
-use schnorrkel::Schnorrkel;
-
-use serai_client::{
-  genesis_liquidity::{
-    primitives::{GENESIS_LIQUIDITY_ACCOUNT, GENESIS_SRI},
-    SeraiGenesisLiquidity,
-  },
-  validator_sets::primitives::{musig_context, Session, ValidatorSet},
-};
-
-use serai_abi::{
-  genesis_liquidity::primitives::{set_initial_price_message, Prices},
-  primitives::COINS,
-};
-
-use sp_core::{sr25519::Signature, Pair as PairTrait};
-
-use serai_client::{
-  primitives::{
-    Amount, NetworkId, Coin, Balance, BlockHash, SeraiAddress, insecure_pair_from_name,
-  },
-  in_instructions::primitives::{InInstruction, InInstructionWithBalance, Batch},
-  Serai,
-};
+use serai_client::Serai;
 
 mod common;
-use common::{in_instructions::provide_batch, tx::publish_tx};
+use common::genesis_liquidity::test_genesis_liquidity;
 
 serai_test_fast_epoch!(
   genesis_liquidity: (|serai: Serai| async move {
     test_genesis_liquidity(serai).await;
   })
 );
-
-async fn test_genesis_liquidity(serai: Serai) {
-  // amounts
-  let amounts = vec![
-    Amount(5_53246991),
-    Amount(3_14562819),
-    Amount(9_33648912),
-    Amount(150_873639000000),
-    Amount(248_665228000000),
-    Amount(451_765529000000),
-  ];
-
-  // addresses
-  let mut btc_addresses = vec![];
-  let mut xmr_addresses = vec![];
-  let addr_count = amounts.len();
-  for (i, amount) in amounts.into_iter().enumerate() {
-    let mut address = SeraiAddress::new([0; 32]);
-    OsRng.fill_bytes(&mut address.0);
-    if i < addr_count / 2 {
-      btc_addresses.push((address, amount));
-    } else {
-      xmr_addresses.push((address, amount));
-    }
-  }
-  btc_addresses.sort_by(|a1, a2| a1.0.cmp(&a2.0));
-  xmr_addresses.sort_by(|a1, a2| a1.0.cmp(&a2.0));
-
-  // btc batch
-  let mut block_hash = BlockHash([0; 32]);
-  OsRng.fill_bytes(&mut block_hash.0);
-  let btc_ins = btc_addresses
-    .iter()
-    .map(|(addr, amount)| InInstructionWithBalance {
-      instruction: InInstruction::GenesisLiquidity(*addr),
-      balance: Balance { coin: Coin::Bitcoin, amount: *amount },
-    })
-    .collect::<Vec<_>>();
-  let batch =
-    Batch { network: NetworkId::Bitcoin, id: 0, block: block_hash, instructions: btc_ins };
-  provide_batch(&serai, batch).await;
-
-  // xmr batch
-  let mut block_hash = BlockHash([0; 32]);
-  OsRng.fill_bytes(&mut block_hash.0);
-  let xmr_ins = xmr_addresses
-    .iter()
-    .map(|(addr, amount)| InInstructionWithBalance {
-      instruction: InInstruction::GenesisLiquidity(*addr),
-      balance: Balance { coin: Coin::Monero, amount: *amount },
-    })
-    .collect::<Vec<_>>();
-  let batch = Batch { network: NetworkId::Monero, id: 0, block: block_hash, instructions: xmr_ins };
-  provide_batch(&serai, batch).await;
-
-  // set prices
-  let prices = Prices { bitcoin: 10u64.pow(8), monero: 184100, ethereum: 4785000, dai: 1500 };
-  set_prices(&serai, &prices).await;
-
-  // wait until genesis ends..
-  tokio::time::timeout(tokio::time::Duration::from_secs(300), async {
-    while serai.latest_finalized_block().await.unwrap().number() < 25 {
-      tokio::time::sleep(Duration::from_secs(6)).await;
-    }
-  })
-  .await
-  .unwrap();
-
-  // check total SRI supply is +100M
-  let last_block = serai.latest_finalized_block().await.unwrap().hash();
-  let serai = serai.as_of(last_block);
-  // Check balance instead of supply
-  let sri = serai.coins().coin_supply(Coin::Serai).await.unwrap();
-  // there are 6 endowed accounts in dev-net. Take this into consideration when checking
-  // for the total sri minted at this time.
-  let endowed_amount: u64 = 1 << 60;
-  let total_sri = (6 * endowed_amount) + GENESIS_SRI;
-  assert_eq!(sri, Amount(total_sri));
-
-  // check genesis account has no coins, all transferred to pools.
-  for coin in COINS {
-    let amount = serai.coins().coin_balance(coin, GENESIS_LIQUIDITY_ACCOUNT).await.unwrap();
-    assert_eq!(amount.0, 0);
-  }
-
-  // check pools has proper liquidity
-  let pool_btc = btc_addresses.iter().fold(0u128, |acc, value| acc + u128::from(value.1 .0));
-  let pool_xmr = xmr_addresses.iter().fold(0u128, |acc, value| acc + u128::from(value.1 .0));
-
-  let pool_btc_value = (pool_btc * u128::from(prices.bitcoin)) / 10u128.pow(8);
-  let pool_xmr_value = (pool_xmr * u128::from(prices.monero)) / 10u128.pow(12);
-  let total_value = pool_btc_value + pool_xmr_value;
-
-  // calculated distributed SRI. We know that xmr is at the end of COINS array
-  // so it will be approximated to roof instead of floor after integer division.
-  let btc_sri = (pool_btc_value * u128::from(GENESIS_SRI)) / total_value;
-  let xmr_sri = ((pool_xmr_value * u128::from(GENESIS_SRI)) / total_value) + 1;
-
-  let btc_reserves = serai.dex().get_reserves(Coin::Bitcoin, Coin::Serai).await.unwrap().unwrap();
-  assert_eq!(u128::from(btc_reserves.0 .0), pool_btc);
-  assert_eq!(u128::from(btc_reserves.1 .0), btc_sri);
-
-  let xmr_reserves = serai.dex().get_reserves(Coin::Monero, Coin::Serai).await.unwrap().unwrap();
-  assert_eq!(u128::from(xmr_reserves.0 .0), pool_xmr);
-  assert_eq!(u128::from(xmr_reserves.1 .0), xmr_sri);
-
-  // check each btc liq provider got liq tokens proportional to their value
-  let btc_liq_token_supply = u128::from(
-    serai
-      .liquidity_tokens()
-      .token_balance(Coin::Bitcoin, GENESIS_LIQUIDITY_ACCOUNT)
-      .await
-      .unwrap()
-      .0,
-  );
-  let mut total_tokens_this_coin: u128 = 0;
-  for (i, (addr, amount)) in btc_addresses.iter().enumerate() {
-    let addr_value = (u128::from(amount.0) * u128::from(prices.bitcoin)) / 10u128.pow(8);
-    let addr_liq_tokens = if i == btc_addresses.len() - 1 {
-      btc_liq_token_supply - total_tokens_this_coin
-    } else {
-      (addr_value * btc_liq_token_supply) / pool_btc_value
-    };
-
-    let addr_actual_token_amount =
-      serai.genesis_liquidity().liquidity_tokens(addr, Coin::Bitcoin).await.unwrap();
-
-    assert_eq!(addr_liq_tokens, addr_actual_token_amount.0.into());
-    total_tokens_this_coin += addr_liq_tokens;
-  }
-
-  // check each xmr liq provider got liq tokens proportional to their value
-  let xmr_liq_token_supply = u128::from(
-    serai
-      .liquidity_tokens()
-      .token_balance(Coin::Monero, GENESIS_LIQUIDITY_ACCOUNT)
-      .await
-      .unwrap()
-      .0,
-  );
-  total_tokens_this_coin = 0;
-  for (i, (addr, amount)) in xmr_addresses.iter().enumerate() {
-    let addr_value = (u128::from(amount.0) * u128::from(prices.monero)) / 10u128.pow(12);
-    let addr_liq_tokens = if i == xmr_addresses.len() - 1 {
-      xmr_liq_token_supply - total_tokens_this_coin
-    } else {
-      (addr_value * xmr_liq_token_supply) / pool_xmr_value
-    };
-
-    let addr_actual_token_amount =
-      serai.genesis_liquidity().liquidity_tokens(addr, Coin::Monero).await.unwrap();
-
-    assert_eq!(addr_liq_tokens, addr_actual_token_amount.0.into());
-    total_tokens_this_coin += addr_liq_tokens;
-  }
-
-  // TODO: remove the liq before/after genesis ended.
-}
-
-async fn set_prices(serai: &Serai, prices: &Prices) {
-  // prepare a Musig tx to set the initial prices
-  let pair = insecure_pair_from_name("Alice");
-  let public = pair.public();
-  let set = ValidatorSet { session: Session(0), network: NetworkId::Serai };
-
-  let public_key = <Ristretto as Ciphersuite>::read_G::<&[u8]>(&mut public.0.as_ref()).unwrap();
-  let secret_key = <Ristretto as Ciphersuite>::read_F::<&[u8]>(
-    &mut pair.as_ref().secret.to_bytes()[.. 32].as_ref(),
-  )
-  .unwrap();
-
-  assert_eq!(Ristretto::generator() * secret_key, public_key);
-  let threshold_keys =
-    musig::<Ristretto>(&musig_context(set), &Zeroizing::new(secret_key), &[public_key]).unwrap();
-
-  let sig = frost::tests::sign_without_caching(
-    &mut OsRng,
-    frost::tests::algorithm_machines(
-      &mut OsRng,
-      &Schnorrkel::new(b"substrate"),
-      &HashMap::from([(threshold_keys.params().i(), threshold_keys.into())]),
-    ),
-    &set_initial_price_message(&set, prices),
-  );
-
-  // set initial prices
-  let _ = publish_tx(
-    serai,
-    &SeraiGenesisLiquidity::set_initial_price(*prices, Signature(sig.to_bytes())),
-  )
-  .await;
-}

substrate/emissions/pallet/Cargo.toml

@@ -27,11 +27,8 @@ frame-system = { git = "https://github.com/serai-dex/substrate", default-feature
 frame-support = { git = "https://github.com/serai-dex/substrate", default-features = false }
 
 sp-std = { git = "https://github.com/serai-dex/substrate", default-features = false }
-sp-session = { git = "https://github.com/serai-dex/substrate", default-features = false }
 sp-runtime = { git = "https://github.com/serai-dex/substrate", default-features = false }
 
-pallet-babe = { git = "https://github.com/serai-dex/substrate", default-features = false }
-
 coins-pallet = { package = "serai-coins-pallet", path = "../../coins/pallet", default-features = false }
 validator-sets-pallet = { package = "serai-validator-sets-pallet", path = "../../validator-sets/pallet", default-features = false }
 dex-pallet = { package = "serai-dex-pallet", path = "../../dex/pallet", default-features = false }
@@ -50,11 +47,8 @@ std = [
   "frame-support/std",
 
   "sp-std/std",
-  "sp-session/std",
   "sp-runtime/std",
 
-  "pallet-babe/std",
-
   "coins-pallet/std",
   "validator-sets-pallet/std",
   "dex-pallet/std",

substrate/emissions/pallet/src/lib.rs

@@ -1,6 +1,6 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
-#[allow(clippy::cast_possible_truncation, clippy::no_effect_underscore_binding)]
+#[allow(clippy::cast_possible_truncation, clippy::no_effect_underscore_binding, clippy::empty_docs)]
 #[frame_support::pallet]
 pub mod pallet {
   use super::*;
@@ -8,27 +8,21 @@ pub mod pallet {
   use frame_support::{pallet_prelude::*, sp_runtime::SaturatedConversion};
 
   use sp_std::{vec, vec::Vec, collections::btree_map::BTreeMap};
-  use sp_session::ShouldEndSession;
   use sp_runtime;
 
   use coins_pallet::{Config as CoinsConfig, Pallet as Coins, AllowMint};
   use dex_pallet::{Config as DexConfig, Pallet as Dex};
 
   use validator_sets_pallet::{Pallet as ValidatorSets, Config as ValidatorSetsConfig};
-  use pallet_babe::{Pallet as Babe, Config as BabeConfig};
 
   use serai_primitives::{NetworkId, NETWORKS, *};
-  use validator_sets_primitives::MAX_KEY_SHARES_PER_SET;
+  use validator_sets_primitives::{MAX_KEY_SHARES_PER_SET, Session};
   use genesis_liquidity_primitives::GENESIS_PERIOD_BLOCKS;
   use emissions_primitives::*;
 
   #[pallet::config]
   pub trait Config:
-    frame_system::Config<AccountId = PublicKey>
-    + ValidatorSetsConfig
-    + BabeConfig
-    + CoinsConfig
-    + DexConfig
+    frame_system::Config<AccountId = PublicKey> + ValidatorSetsConfig + CoinsConfig + DexConfig
   {
     type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;
   }
@@ -37,7 +31,7 @@ pub mod pallet {
   #[derive(Clone, PartialEq, Eq, Debug, Encode, Decode)]
   pub struct GenesisConfig<T: Config> {
     /// Networks to spawn Serai with.
-    pub networks: Vec<NetworkId>,
+    pub networks: Vec<(NetworkId, Amount)>,
     /// List of participants to place in the initial validator sets.
     pub participants: Vec<T::AccountId>,
   }
@@ -50,10 +44,7 @@ pub mod pallet {
 
   #[pallet::error]
   pub enum Error<T> {
-    GenesisPeriodEnded,
-    AmountOverflowed,
-    NotEnoughLiquidity,
-    CanOnlyRemoveFullAmount,
+    MintFailed,
   }
 
   #[pallet::event]
@@ -73,13 +64,17 @@ pub mod pallet {
   >;
 
   #[pallet::storage]
-  #[pallet::getter(fn epoch_begin_block)]
-  pub(crate) type EpochBeginBlock<T: Config> = StorageMap<_, Identity, u64, u64, ValueQuery>;
+  #[pallet::getter(fn session_begin_block)]
+  pub(crate) type SessionBeginBlock<T: Config> = StorageMap<_, Identity, u32, u64, ValueQuery>;
+
+  #[pallet::storage]
+  #[pallet::getter(fn session)]
+  pub type CurrentSession<T: Config> = StorageMap<_, Identity, NetworkId, u32, ValueQuery>;
 
   #[pallet::storage]
   #[pallet::getter(fn economic_security_reached)]
   pub(crate) type EconomicSecurityReached<T: Config> =
-    StorageMap<_, Identity, NetworkId, BlockNumberFor<T>, ValueQuery>;
+    StorageMap<_, Identity, NetworkId, bool, ValueQuery>;
 
   #[pallet::storage]
   #[pallet::getter(fn last_swap_volume)]
@@ -88,57 +83,60 @@ pub mod pallet {
   #[pallet::genesis_build]
   impl<T: Config> BuildGenesisConfig for GenesisConfig<T> {
     fn build(&self) {
-      for id in self.networks.clone() {
+      for (id, stake) in self.networks.clone() {
         let mut participants = vec![];
         for p in self.participants.clone() {
-          participants.push((p, 0u64));
+          participants.push((p, stake.0));
         }
         Participants::<T>::set(id, Some(participants.try_into().unwrap()));
+        CurrentSession::<T>::set(id, 0);
+        EconomicSecurityReached::<T>::set(id, false);
       }
 
-      EpochBeginBlock::<T>::set(0, 0);
+      SessionBeginBlock::<T>::set(0, 0);
     }
   }
 
   #[pallet::hooks]
   impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {
-    /// Since we are on `on_finalize`, session should have already rotated.
-    /// We can distribute the rewards for the last set.
     fn on_finalize(n: BlockNumberFor<T>) {
+      // wait 1 extra block to actually see genesis changes
+      let genesis_ended = n >= (GENESIS_PERIOD_BLOCKS + 1).into();
+
       // we accept we reached economic security once we can mint smallest amount of a network's coin
       for coin in COINS {
-        let existing = EconomicSecurityReached::<T>::get(coin.network());
-        if existing == 0u32.into() &&
-          <T as CoinsConfig>::AllowMint::is_allowed(&Balance { coin, amount: Amount(1) })
+        let check = !Self::economic_security_reached(coin.network()) && genesis_ended;
+        if check && <T as CoinsConfig>::AllowMint::is_allowed(&Balance { coin, amount: Amount(1) })
         {
-          EconomicSecurityReached::<T>::set(coin.network(), n);
+          EconomicSecurityReached::<T>::set(coin.network(), true);
         }
       }
 
-      // emissions start only after genesis period and happens once per epoch
+      // check wif we got a new session
+      let mut session_changed = false;
+      let session = ValidatorSets::<T>::session(NetworkId::Serai).unwrap_or(Session(0)).0;
+      if session > Self::session(NetworkId::Serai) {
+        session_changed = true;
+        CurrentSession::<T>::set(NetworkId::Serai, session);
+      }
+
+      // emissions start only after genesis period and happens once per session.
       // so we don't do anything before that time.
-      if !(n >= GENESIS_PERIOD_BLOCKS.into() && T::ShouldEndSession::should_end_session(n)) {
+      if !(genesis_ended && session_changed) {
         return;
       }
 
-      // figure out the amount of blocks in the last epoch
-      // TODO: we use epoch index here but should we use SessionIndex since this is how we decide
-      // whether time to distribute the rewards or not? Because apparently epochs != Sessions
-      // since we can skip some epochs if the chain is offline more than epoch duration??
-      let epoch = Babe::<T>::current_epoch().epoch_index - 1;
-      let block_count = n.saturated_into::<u64>() - Self::epoch_begin_block(epoch);
+      // figure out the amount of blocks in the last session. Session is at least 1
+      // if we come here.
+      let current_block = n.saturated_into::<u64>();
+      let block_count = current_block - Self::session_begin_block(session - 1);
 
       // get total reward for this epoch
       let pre_ec_security = Self::pre_ec_security();
       let mut distances = BTreeMap::new();
       let mut total_distance: u64 = 0;
-      let reward_this_epoch = if Self::initial_period(n) {
-        // rewards are fixed for initial period
-        block_count * INITIAL_REWARD_PER_BLOCK
-      } else if pre_ec_security {
+      let reward_this_epoch = if pre_ec_security {
         // calculate distance to economic security per network
-        let mut total_required: u64 = 0;
-        let mut total_current: u64 = 0;
         for n in NETWORKS {
           if n == NetworkId::Serai {
             continue;
@@ -150,11 +148,10 @@ pub mod pallet {
             current = required;
           }
 
-          distances.insert(n, required - current);
-          total_required = total_required.saturating_add(required);
-          total_current = total_current.saturating_add(current);
+          let distance = required - current;
+          distances.insert(n, distance);
+          total_distance = total_distance.saturating_add(distance);
         }
-        total_distance = total_required.saturating_sub(total_current);
 
         // add serai network portion(20%)
         let new_total_distance =
@@ -162,10 +159,15 @@ pub mod pallet {
         distances.insert(NetworkId::Serai, new_total_distance - total_distance);
         total_distance = new_total_distance;
 
-        // rewards for pre-economic security is
-        // (STAKE_REQUIRED - CURRENT_STAKE) / blocks_until(SECURE_BY).
-        let block_reward = total_distance / Self::blocks_until(SECURE_BY);
-        block_count * block_reward
+        if Self::initial_period(n) {
+          // rewards are fixed for initial period
+          block_count * INITIAL_REWARD_PER_BLOCK
+        } else {
+          // rewards for pre-economic security is
+          // (STAKE_REQUIRED - CURRENT_STAKE) / blocks_until(SECURE_BY).
+          let block_reward = total_distance / Self::blocks_until(SECURE_BY);
+          block_count * block_reward
+        }
       } else {
         // post ec security
         block_count * REWARD_PER_BLOCK
@@ -201,7 +203,11 @@ pub mod pallet {
         .map(|(n, distance)| {
           let reward = if pre_ec_security {
             // calculate how much each network gets based on distance to ec-security
-            reward_this_epoch.saturating_mul(distance) / total_distance
+            u64::try_from(
+              u128::from(reward_this_epoch).saturating_mul(u128::from(distance)) /
+                u128::from(total_distance),
+            )
+            .unwrap()
           } else {
             // 20% of the reward goes to the Serai network and rest is distributed among others
             // based on swap-volume.
@@ -209,7 +215,12 @@ pub mod pallet {
               reward_this_epoch / 5
             } else {
               let reward = reward_this_epoch - (reward_this_epoch / 5);
-              reward.saturating_mul(*volume_per_network.get(&n).unwrap_or(&0)) / total_volume
+              u64::try_from(
+                u128::from(reward)
+                  .saturating_mul(u128::from(*volume_per_network.get(&n).unwrap_or(&0))) /
+                  u128::from(total_volume),
+              )
+              .unwrap()
             }
           };
           (n, reward)
@@ -218,35 +229,46 @@ pub mod pallet {
 
       // distribute the rewards within the network
       for (n, reward) in rewards_per_network {
-        // calculate pool vs validator share
-        let capacity = ValidatorSets::<T>::total_allocated_stake(n).unwrap_or(Amount(0)).0;
-        let required = ValidatorSets::<T>::required_stake_for_network(n);
-        let unused_capacity = capacity.saturating_sub(required);
+        let (validators_reward, pool_reward) = if n == NetworkId::Serai {
+          (reward, 0)
+        } else {
+          // calculate pool vs validator share
+          let capacity = ValidatorSets::<T>::total_allocated_stake(n).unwrap_or(Amount(0)).0;
+          let required = ValidatorSets::<T>::required_stake_for_network(n);
+          let unused_capacity = capacity.saturating_sub(required);
 
-        let distribution = unused_capacity.saturating_mul(ACCURACY_MULTIPLIER) / capacity;
-        let total = DESIRED_DISTRIBUTION.saturating_add(distribution);
+          let distribution = unused_capacity.saturating_mul(ACCURACY_MULTIPLIER) / capacity;
+          let total = DESIRED_DISTRIBUTION.saturating_add(distribution);
 
-        let validators_reward = DESIRED_DISTRIBUTION.saturating_mul(reward) / total;
-        let pool_reward = total - validators_reward;
+          let validators_reward = DESIRED_DISTRIBUTION.saturating_mul(reward) / total;
+          let pool_reward = total - validators_reward;
+          (validators_reward, pool_reward)
+        };
 
         // distribute validators rewards
-        Self::distribute_to_validators(n, validators_reward);
+        if Self::distribute_to_validators(n, validators_reward).is_err() {
+          // TODO: log the failure
+          continue;
+        }
 
         // send the rest to the pool
         let coin_count = u64::try_from(n.coins().len()).unwrap();
         for c in n.coins() {
-          // TODO: we just print a warning here instead of unwrap?
           // assumes reward is equally distributed between network coins.
-          Coins::<T>::mint(
+          if Coins::<T>::mint(
             Dex::<T>::get_pool_account(*c),
             Balance { coin: Coin::Serai, amount: Amount(pool_reward / coin_count) },
           )
-          .unwrap();
+          .is_err()
+          {
+            // TODO: log the failure
+            continue;
+          }
         }
       }
 
       // set the begin block and participants
-      EpochBeginBlock::<T>::set(epoch, n.saturated_into::<u64>());
+      SessionBeginBlock::<T>::set(session, current_block);
       for n in NETWORKS {
         // TODO: `participants_for_latest_decided_set` returns keys with key shares but we
         // store keys with actual stake amounts. Pr https://github.com/serai-dex/serai/pull/518
@@ -273,14 +295,14 @@ pub mod pallet {
           continue;
         }
 
-        if Self::economic_security_reached(n) == 0u32.into() {
+        if !Self::economic_security_reached(n) {
           return true;
         }
       }
       false
     }
 
-    fn distribute_to_validators(n: NetworkId, reward: u64) {
+    fn distribute_to_validators(n: NetworkId, reward: u64) -> DispatchResult {
       // distribute among network's set based on
       // -> (key shares * stake per share) + ((stake % stake per share) / 2)
       let stake_per_share = ValidatorSets::<T>::allocation_per_key_share(n).unwrap().0;
@@ -296,10 +318,17 @@ pub mod pallet {
 
       // stake the rewards
       for (p, score) in scores {
-        let p_reward = reward.saturating_mul(score) / total_score;
-        // TODO: print a warning here?
-        let _ = ValidatorSets::<T>::deposit_stake(n, p, Amount(p_reward));
+        let p_reward = u64::try_from(
+          u128::from(reward).saturating_mul(u128::from(score)) / u128::from(total_score),
+        )
+        .unwrap();
+
+        Coins::<T>::mint(p, Balance { coin: Coin::Serai, amount: Amount(p_reward) })
+          .map_err(|_| Error::<T>::MintFailed)?;
+        ValidatorSets::<T>::deposit_stake(n, p, Amount(p_reward))?;
       }
+
+      Ok(())
     }
   }
 }

substrate/node/src/chain_spec.rs

@@ -58,7 +58,15 @@ fn devnet_genesis(
     },
     genesis_liquidity: GenesisLiquidityConfig { participants: validators.clone() },
     emissions: EmissionsConfig {
-      networks: serai_runtime::primitives::NETWORKS.to_vec(),
+      networks: serai_runtime::primitives::NETWORKS
+        .iter()
+        .map(|network| match network {
+          NetworkId::Serai => (NetworkId::Serai, Amount(50_000 * 10_u64.pow(8))),
+          NetworkId::Bitcoin => (NetworkId::Bitcoin, Amount(1_000_000 * 10_u64.pow(8))),
+          NetworkId::Ethereum => (NetworkId::Ethereum, Amount(1_000_000 * 10_u64.pow(8))),
+          NetworkId::Monero => (NetworkId::Monero, Amount(100_000 * 10_u64.pow(8))),
+        })
+        .collect(),
       participants: validators.clone(),
     },
     signals: SignalsConfig::default(),
@@ -109,7 +117,15 @@ fn testnet_genesis(wasm_binary: &[u8], validators: Vec<&'static str>) -> Runtime
     },
     genesis_liquidity: GenesisLiquidityConfig { participants: validators.clone() },
     emissions: EmissionsConfig {
-      networks: serai_runtime::primitives::NETWORKS.to_vec(),
+      networks: serai_runtime::primitives::NETWORKS
+        .iter()
+        .map(|network| match network {
+          NetworkId::Serai => (NetworkId::Serai, Amount(50_000 * 10_u64.pow(8))),
+          NetworkId::Bitcoin => (NetworkId::Bitcoin, Amount(1_000_000 * 10_u64.pow(8))),
+          NetworkId::Ethereum => (NetworkId::Ethereum, Amount(1_000_000 * 10_u64.pow(8))),
+          NetworkId::Monero => (NetworkId::Monero, Amount(100_000 * 10_u64.pow(8))),
+        })
+        .collect(),
       participants: validators.clone(),
     },
     signals: SignalsConfig::default(),