ERC-20
Overview
Max Total Supply
8,085,777.676880881729102216 bpt-sss-gauge
Holders
1,002
Market
Price
-
Onchain Market Cap
-
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
Balance
99.769470063373139049 bpt-sss-gaugeValue
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Minimal Proxy Contract for 0xf00c004d5453bbd71c2267b015516b80add7ce76
Contract Name:
Child Liquidity Gauge
Compiler Version
vyper:0.3.3
Contract Source Code (Vyper language format)
# @version 0.3.3 """ @title Child Liquidity Gauge @license MIT @author Curve Finance """ from vyper.interfaces import ERC20 implements: ERC20 interface ERC20Extended: def symbol() -> String[26]: view interface Minter: def minted(_user: address, _gauge: address) -> uint256: view def getBalancerToken() -> address: view interface ERC1271: def isValidSignature(_hash: bytes32, _signature: Bytes[65]) -> bytes32: view interface AuthorizerAdaptor: def getVault() -> address: view interface VotingEscrowDelegationProxy: def totalSupply() -> uint256: view def adjustedBalanceOf(_account: address) -> uint256: view event Approval: _owner: indexed(address) _spender: indexed(address) _value: uint256 event Transfer: _from: indexed(address) _to: indexed(address) _value: uint256 event Deposit: _user: indexed(address) _value: uint256 event Withdraw: _user: indexed(address) _value: uint256 event UpdateLiquidityLimit: _user: indexed(address) _original_balance: uint256 _original_supply: uint256 _working_balance: uint256 _working_supply: uint256 struct Reward: distributor: address period_finish: uint256 rate: uint256 last_update: uint256 integral: uint256 DOMAIN_TYPE_HASH: constant(bytes32) = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)") PERMIT_TYPE_HASH: constant(bytes32) = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)") ERC1271_MAGIC_VAL: constant(bytes32) = 0x1626ba7e00000000000000000000000000000000000000000000000000000000 MAX_REWARDS: constant(uint256) = 8 TOKENLESS_PRODUCTION: constant(uint256) = 40 WEEK: constant(uint256) = 86400 * 7 BAL: immutable(address) BAL_PSEUDO_MINTER: immutable(address) VE_DELEGATION_PROXY: immutable(address) BAL_VAULT: immutable(address) # BEETS: Since we are not using the authorizer adaptor, we rename the immutable to better reflect the address BEETS_DAO_MULTISIG: immutable(address) DOMAIN_SEPARATOR: public(bytes32) nonces: public(HashMap[address, uint256]) name: public(String[64]) symbol: public(String[32]) _allowance: HashMap[address, HashMap[address, uint256]] balanceOf: public(HashMap[address, uint256]) totalSupply: public(uint256) lp_token: public(address) version: public(String[128]) factory: public(address) working_balances: public(HashMap[address, uint256]) working_supply: public(uint256) period: public(uint256) period_timestamp: public(HashMap[uint256, uint256]) integrate_checkpoint_of: public(HashMap[address, uint256]) integrate_fraction: public(HashMap[address, uint256]) integrate_inv_supply: public(HashMap[uint256, uint256]) integrate_inv_supply_of: public(HashMap[address, uint256]) # For tracking external rewards reward_count: public(uint256) reward_tokens: public(address[MAX_REWARDS]) reward_data: public(HashMap[address, Reward]) # claimant -> default reward receiver rewards_receiver: public(HashMap[address, address]) # reward token -> claiming address -> integral reward_integral_for: public(HashMap[address, HashMap[address, uint256]]) # user -> token -> [uint128 claimable amount][uint128 claimed amount] claim_data: HashMap[address, HashMap[address, uint256]] is_killed: public(bool) inflation_rate: public(HashMap[uint256, uint256]) @external def __init__( _voting_escrow_delegation_proxy: address, _bal_pseudo_minter: address, _beets_dao_multisig: address, _bal_vault: address, _version: String[128] ): self.lp_token = 0x000000000000000000000000000000000000dEaD self.version = _version self.factory = 0x000000000000000000000000000000000000dEaD VE_DELEGATION_PROXY = 0x0000000000000000000000000000000000000000 BAL_PSEUDO_MINTER = 0x0000000000000000000000000000000000000000 BAL = 0x0000000000000000000000000000000000000000 BEETS_DAO_MULTISIG = _beets_dao_multisig BAL_VAULT = _bal_vault @internal def _checkpoint(_user: address): """ @notice Checkpoint a user calculating their BAL entitlement @param _user User address """ period: uint256 = self.period period_time: uint256 = self.period_timestamp[period] integrate_inv_supply: uint256 = self.integrate_inv_supply[period] # If killed, we skip accumulating inflation in `integrate_inv_supply` if block.timestamp > period_time and not self.is_killed: working_supply: uint256 = self.working_supply prev_week_time: uint256 = period_time week_time: uint256 = min((period_time + WEEK) / WEEK * WEEK, block.timestamp) for i in range(256): dt: uint256 = week_time - prev_week_time if working_supply != 0: # we don't have to worry about crossing inflation epochs # and if we miss any weeks, those weeks inflation rates will be 0 for sure # but that means no one interacted with the gauge for that long integrate_inv_supply += self.inflation_rate[prev_week_time / WEEK] * 10 ** 18 * dt / working_supply if week_time == block.timestamp: break prev_week_time = week_time week_time = min(week_time + WEEK, block.timestamp) # BEETS: To ensure this if statement never executes, we set the bal_balance to 0. bal_balance: uint256 = 0 # check BAL balance and increase weekly inflation rate by delta for the rest of the week # bal_balance: uint256 = ERC20(BAL).balanceOf(self) if bal_balance != 0: current_week: uint256 = block.timestamp / WEEK self.inflation_rate[current_week] += bal_balance / ((current_week + 1) * WEEK - block.timestamp) ERC20(BAL).transfer(BAL_PSEUDO_MINTER, bal_balance) period += 1 self.period = period self.period_timestamp[period] = block.timestamp self.integrate_inv_supply[period] = integrate_inv_supply working_balance: uint256 = self.working_balances[_user] self.integrate_fraction[_user] += working_balance * (integrate_inv_supply - self.integrate_inv_supply_of[_user]) / 10 ** 18 self.integrate_inv_supply_of[_user] = integrate_inv_supply self.integrate_checkpoint_of[_user] = block.timestamp @internal def _update_liquidity_limit(_user: address, _user_balance: uint256, _total_supply: uint256): """ @notice Calculate working balances to apply amplification of BAL production. @param _user The user address @param _user_balance User's amount of liquidity (LP tokens) @param _total_supply Total amount of liquidity (LP tokens) """ working_balance: uint256 = _user_balance * TOKENLESS_PRODUCTION / 100 ve: address = VE_DELEGATION_PROXY if ve != ZERO_ADDRESS: ve_ts: uint256 = VotingEscrowDelegationProxy(ve).totalSupply() if ve_ts != 0: ve_user_balance: uint256 = VotingEscrowDelegationProxy(ve).adjustedBalanceOf(_user) working_balance += _total_supply * ve_user_balance / ve_ts * (100 - TOKENLESS_PRODUCTION) / 100 working_balance = min(_user_balance, working_balance) old_working_balance: uint256 = self.working_balances[_user] self.working_balances[_user] = working_balance working_supply: uint256 = self.working_supply + working_balance - old_working_balance self.working_supply = working_supply log UpdateLiquidityLimit(_user, _user_balance, _total_supply, working_balance, working_supply) @view @internal def _all_indexes() -> DynArray[uint256, MAX_REWARDS]: indexes: DynArray[uint256, MAX_REWARDS] = [] for i in range(MAX_REWARDS): if i >= self.reward_count: break indexes.append(i) return indexes @internal def _checkpoint_rewards( _user: address, _total_supply: uint256, _claim: bool, _receiver: address, _input_reward_indexes: DynArray[uint256, MAX_REWARDS] ): """ @notice Claim pending rewards and checkpoint rewards for a user """ user_balance: uint256 = 0 receiver: address = _receiver if _user != ZERO_ADDRESS: user_balance = self.balanceOf[_user] if _claim and _receiver == ZERO_ADDRESS: # if receiver is not explicitly declared, check if a default receiver is set receiver = self.rewards_receiver[_user] if receiver == ZERO_ADDRESS: # if no default receiver is set, direct claims to the user receiver = _user reward_count: uint256 = self.reward_count reward_indexes: DynArray[uint256, MAX_REWARDS] = [] if len(_input_reward_indexes) == 0: reward_indexes = self._all_indexes() else: reward_indexes = _input_reward_indexes for i in reward_indexes: assert i < reward_count, "INVALID_REWARD_INDEX" token: address = self.reward_tokens[i] integral: uint256 = self.reward_data[token].integral last_update: uint256 = min(block.timestamp, self.reward_data[token].period_finish) duration: uint256 = last_update - self.reward_data[token].last_update if duration != 0: self.reward_data[token].last_update = last_update if _total_supply != 0: integral += duration * self.reward_data[token].rate * 10**18 / _total_supply self.reward_data[token].integral = integral if _user != ZERO_ADDRESS: integral_for: uint256 = self.reward_integral_for[token][_user] new_claimable: uint256 = 0 if integral_for < integral: self.reward_integral_for[token][_user] = integral new_claimable = user_balance * (integral - integral_for) / 10**18 claim_data: uint256 = self.claim_data[_user][token] total_claimable: uint256 = shift(claim_data, -128) + new_claimable if total_claimable > 0: total_claimed: uint256 = claim_data % 2**128 if _claim: response: Bytes[32] = raw_call( token, _abi_encode( receiver, total_claimable, method_id=method_id("transfer(address,uint256)") ), max_outsize=32, ) if len(response) != 0: assert convert(response, bool), "TRANSFER_FAILURE" self.claim_data[_user][token] = total_claimed + total_claimable elif new_claimable > 0: self.claim_data[_user][token] = total_claimed + shift(total_claimable, 128) @internal def _transfer(_from: address, _to: address, _value: uint256): if _value == 0: return total_supply: uint256 = self.totalSupply has_rewards: bool = self.reward_count != 0 for addr in [_from, _to]: self._checkpoint(addr) # We need to checkpoint all of the rewards before affecting the gauge token balance for a user, # but to do it safely we need to skip making external calls. Therefore, we set _claim to False. self._checkpoint_rewards(addr, total_supply, False, ZERO_ADDRESS, []) new_balance: uint256 = self.balanceOf[_from] - _value self.balanceOf[_from] = new_balance self._update_liquidity_limit(_from, new_balance, total_supply) new_balance = self.balanceOf[_to] + _value self.balanceOf[_to] = new_balance self._update_liquidity_limit(_to, new_balance, total_supply) log Transfer(_from, _to, _value) @external @nonreentrant("lock") def deposit(_value: uint256, _user: address = msg.sender): """ @notice Deposit `_value` LP tokens @param _value Number of tokens to deposit @param _user The account to send gauge tokens to """ self._checkpoint(_user) if _value == 0: return total_supply: uint256 = self.totalSupply new_balance: uint256 = self.balanceOf[_user] + _value if self.reward_count != 0: # We need to checkpoint all of the rewards before affecting the gauge token balance for a user, # but to do it safely we need to skip making external calls. Therefore, we set _claim to False. self._checkpoint_rewards(_user, total_supply, False, ZERO_ADDRESS, []) total_supply += _value self.balanceOf[_user] = new_balance self.totalSupply = total_supply self._update_liquidity_limit(_user, new_balance, total_supply) ERC20(self.lp_token).transferFrom(msg.sender, self, _value) log Deposit(_user, _value) log Transfer(ZERO_ADDRESS, _user, _value) @external @nonreentrant("lock") def withdraw(_value: uint256, _user: address = msg.sender): """ @notice Withdraw `_value` LP tokens @param _value Number of tokens to withdraw @param _user The account to send LP tokens to """ self._checkpoint(_user) if _value == 0: return total_supply: uint256 = self.totalSupply new_balance: uint256 = self.balanceOf[msg.sender] - _value if self.reward_count != 0: # We need to checkpoint all of the rewards before affecting the gauge token balance for a user, # but to do it safely we need to skip making external calls. Therefore, we set _claim to False. self._checkpoint_rewards(_user, total_supply, False, ZERO_ADDRESS, []) total_supply -= _value self.balanceOf[msg.sender] = new_balance self.totalSupply = total_supply self._update_liquidity_limit(msg.sender, new_balance, total_supply) ERC20(self.lp_token).transfer(_user, _value) log Withdraw(_user, _value) log Transfer(msg.sender, ZERO_ADDRESS, _value) @view @internal def _get_allowance(owner: address, spender: address) -> uint256: """ @dev Override to grant the Vault infinite allowance, causing for Gauge Tokens to not require approval. This is sound as the Vault already provides authorization mechanisms when initiating token transfers, which this contract inherits. """ if (spender == BAL_VAULT): return MAX_UINT256 return self._allowance[owner][spender] @external @nonreentrant("lock") def transferFrom(_from: address, _to: address, _value: uint256) -> bool: """ @notice Transfer tokens from one address to another @param _from The address which you want to send tokens from @param _to The address which you want to transfer to @param _value the amount of tokens to be transferred @return bool success """ allowance: uint256 = self._get_allowance(_from, msg.sender) if allowance != MAX_UINT256: self._allowance[_from][msg.sender] = allowance - _value self._transfer(_from, _to, _value) return True @external def approve(_spender: address, _value: uint256) -> bool: """ @notice Approve the passed address to transfer the specified amount of tokens on behalf of msg.sender @dev Beware that changing an allowance via this method brings the risk that someone may use both the old and new allowance by unfortunate transaction ordering. This may be mitigated with the use of {increaseAllowance} and {decreaseAllowance}. https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 @param _spender The address which will transfer the funds @param _value The amount of tokens that may be transferred @return bool success """ self._allowance[msg.sender][_spender] = _value log Approval(msg.sender, _spender, _value) return True @external def permit( _owner: address, _spender: address, _value: uint256, _deadline: uint256, _v: uint8, _r: bytes32, _s: bytes32 ) -> bool: """ @notice Approves spender by owner's signature to expend owner's tokens. See https://eips.ethereum.org/EIPS/eip-2612. @dev Inspired by https://github.com/yearn/yearn-vaults/blob/main/contracts/Vault.vy#L753-L793 @dev Supports smart contract wallets which implement ERC1271 https://eips.ethereum.org/EIPS/eip-1271 @param _owner The address which is a source of funds and has signed the Permit. @param _spender The address which is allowed to spend the funds. @param _value The amount of tokens to be spent. @param _deadline The timestamp after which the Permit is no longer valid. @param _v The bytes[64] of the valid secp256k1 signature of permit by owner @param _r The bytes[0:32] of the valid secp256k1 signature of permit by owner @param _s The bytes[32:64] of the valid secp256k1 signature of permit by owner @return True, if transaction completes successfully """ assert _owner != ZERO_ADDRESS, "INVALID_OWNER" assert block.timestamp <= _deadline, "DEADLINE_EXPIRED" nonce: uint256 = self.nonces[_owner] digest: bytes32 = keccak256( concat( b"\x19\x01", self.DOMAIN_SEPARATOR, keccak256(_abi_encode(PERMIT_TYPE_HASH, _owner, _spender, _value, nonce, _deadline)) ) ) if _owner.is_contract: sig: Bytes[65] = concat(_abi_encode(_r, _s), slice(convert(_v, bytes32), 31, 1)) assert ERC1271(_owner).isValidSignature(digest, sig) == ERC1271_MAGIC_VAL, "INVALID_SIG" else: recovered_address: address = ecrecover(digest, convert(_v, uint256), convert(_r, uint256), convert(_s, uint256)) assert recovered_address == _owner,"INVALID_SIG" self._allowance[_owner][_spender] = _value self.nonces[_owner] = nonce + 1 log Approval(_owner, _spender, _value) return True @external @nonreentrant("lock") def transfer(_to: address, _value: uint256) -> bool: """ @notice Transfer token to a specified address @param _to The address to transfer to @param _value The amount to be transferred @return bool success """ self._transfer(msg.sender, _to, _value) return True @external def increaseAllowance(_spender: address, _added_value: uint256) -> bool: """ @notice Increase the allowance granted to `_spender` by the caller @dev This is alternative to {approve} that can be used as a mitigation for the potential race condition @param _spender The address which will transfer the funds @param _added_value The amount of to increase the allowance @return bool success """ allowance: uint256 = self._get_allowance(msg.sender, _spender) + _added_value self._allowance[msg.sender][_spender] = allowance log Approval(msg.sender, _spender, allowance) return True @external def decreaseAllowance(_spender: address, _subtracted_value: uint256) -> bool: """ @notice Decrease the allowance granted to `_spender` by the caller @dev This is alternative to {approve} that can be used as a mitigation for the potential race condition @param _spender The address which will transfer the funds @param _subtracted_value The amount of to decrease the allowance @return bool success """ allowance: uint256 = self._get_allowance(msg.sender, _spender) - _subtracted_value self._allowance[msg.sender][_spender] = allowance log Approval(msg.sender, _spender, allowance) return True @external def user_checkpoint(addr: address) -> bool: """ @notice Record a checkpoint for `addr` @param addr User address @return bool success """ self._checkpoint(addr) self._update_liquidity_limit(addr, self.balanceOf[addr], self.totalSupply) return True @external def claimable_tokens(addr: address) -> uint256: """ @notice Get the number of claimable tokens per user @dev This function should be manually changed to "view" in the ABI @return uint256 number of claimable tokens per user """ self._checkpoint(addr) # BEETS: Since we don't support the pseudo minter and BAL emissions, we return 0. # This function is left for interface compatibility with balancer gauges # return self.integrate_fraction[addr] - Minter(BAL_PSEUDO_MINTER).minted(addr, self) return 0 @view @external def claimed_reward(_addr: address, _token: address) -> uint256: """ @notice Get the number of already-claimed reward tokens for a user @param _addr Account to get reward amount for @param _token Token to get reward amount for @return uint256 Total amount of `_token` already claimed by `_addr` """ return self.claim_data[_addr][_token] % 2**128 @view @external def claimable_reward(_user: address, _reward_token: address) -> uint256: """ @notice Get the number of claimable reward tokens for a user @param _user Account to get reward amount for @param _reward_token Token to get reward amount for @return uint256 Claimable reward token amount """ integral: uint256 = self.reward_data[_reward_token].integral total_supply: uint256 = self.totalSupply if total_supply != 0: last_update: uint256 = min(block.timestamp, self.reward_data[_reward_token].period_finish) duration: uint256 = last_update - self.reward_data[_reward_token].last_update integral += (duration * self.reward_data[_reward_token].rate * 10**18 / total_supply) integral_for: uint256 = self.reward_integral_for[_reward_token][_user] new_claimable: uint256 = self.balanceOf[_user] * (integral - integral_for) / 10**18 return shift(self.claim_data[_user][_reward_token], -128) + new_claimable @external def set_rewards_receiver(_receiver: address): """ @notice Set the default reward receiver for the caller. @dev When set to ZERO_ADDRESS, rewards are sent to the caller @param _receiver Receiver address for any rewards claimed via `claim_rewards` """ self.rewards_receiver[msg.sender] = _receiver @external @nonreentrant('lock') def claim_rewards( _addr: address = msg.sender, _receiver: address = ZERO_ADDRESS, _reward_indexes: DynArray[uint256, MAX_REWARDS] = [] ): """ @notice Claim available reward tokens for `_addr` @param _addr Address to claim for @param _receiver Address to transfer rewards to - if set to ZERO_ADDRESS, uses the default reward receiver for the caller @param _reward_indexes Array with indexes of the rewards to be checkpointed (all of them by default) """ if _receiver != ZERO_ADDRESS: assert _addr == msg.sender, "CANNOT_REDIRECT_CLAIM" # dev: cannot redirect when claiming for another user self._checkpoint_rewards(_addr, self.totalSupply, True, _receiver, _reward_indexes) @external def add_reward(_reward_token: address, _distributor: address): """ @notice Set the active reward contract. @dev The reward token cannot be BAL, since it is transferred automatically to the pseudo minter during checkpoints. """ assert msg.sender == BEETS_DAO_MULTISIG, "SENDER_NOT_ALLOWED" # dev: only owner assert _reward_token != BAL, "CANNOT_ADD_BAL_REWARD" reward_count: uint256 = self.reward_count assert reward_count < MAX_REWARDS, "MAX_REWARDS_REACHED" assert self.reward_data[_reward_token].distributor == ZERO_ADDRESS, "REWARD_ALREADY_EXISTS" self.reward_data[_reward_token].distributor = _distributor self.reward_tokens[reward_count] = _reward_token self.reward_count = reward_count + 1 @external def set_reward_distributor(_reward_token: address, _distributor: address): current_distributor: address = self.reward_data[_reward_token].distributor assert msg.sender in [current_distributor, BEETS_DAO_MULTISIG], "SENDER_NOT_ALLOWED" assert current_distributor != ZERO_ADDRESS, "REWARD_NOT_ADDED" assert _distributor != ZERO_ADDRESS, "INVALID_DISTRIBUTOR" self.reward_data[_reward_token].distributor = _distributor @external @nonreentrant("lock") def deposit_reward_token(_reward_token: address, _amount: uint256): assert msg.sender == self.reward_data[_reward_token].distributor, "SENDER_NOT_ALLOWED" # It is safe to checkpoint all the existing rewards as long as `_claim` is set to false (i.e. no external calls). self._checkpoint_rewards(ZERO_ADDRESS, self.totalSupply, False, ZERO_ADDRESS, []) response: Bytes[32] = raw_call( _reward_token, _abi_encode( msg.sender, self, _amount, method_id=method_id("transferFrom(address,address,uint256)") ), max_outsize=32, ) if len(response) != 0: assert convert(response, bool), "TRANSFER_FROM_FAILURE" period_finish: uint256 = self.reward_data[_reward_token].period_finish if block.timestamp >= period_finish: self.reward_data[_reward_token].rate = _amount / WEEK else: remaining: uint256 = period_finish - block.timestamp leftover: uint256 = remaining * self.reward_data[_reward_token].rate self.reward_data[_reward_token].rate = (_amount + leftover) / WEEK self.reward_data[_reward_token].last_update = block.timestamp self.reward_data[_reward_token].period_finish = block.timestamp + WEEK @external def killGauge(): """ @notice Kills the gauge so it always yields a rate of 0 and so cannot mint BAL """ assert msg.sender == BEETS_DAO_MULTISIG, "SENDER_NOT_ALLOWED" # dev: only owner self.is_killed = True @external def unkillGauge(): """ @notice Unkills the gauge so it can mint BAL again """ assert msg.sender == BEETS_DAO_MULTISIG, "SENDER_NOT_ALLOWED" # dev: only owner self.is_killed = False @view @external def decimals() -> uint256: """ @notice Returns the number of decimals the token uses """ return 18 @view @external def allowance(owner: address, spender: address) -> uint256: """ @notice Get `spender`'s current allowance from `owner` """ return self._get_allowance(owner, spender) @view @external def integrate_checkpoint() -> uint256: return self.period_timestamp[self.period] @view @external def bal_token() -> address: return BAL @view @external def bal_pseudo_minter() -> address: return BAL_PSEUDO_MINTER @view @external def voting_escrow_delegation_proxy() -> address: return VE_DELEGATION_PROXY # BEETS: The function name is left as authorizer_adaptor for interface compatibility with balancer gauges # The constant is renamed to better reflect the address @view @external def authorizer_adaptor() -> address: """ @notice Return the Beets DAO Multisig address. """ return BEETS_DAO_MULTISIG @external def initialize(_lp_token: address, _version: String[128]): assert self.lp_token == ZERO_ADDRESS, "ALREADY_INITIALIZED" # dev: already initialzed self.lp_token = _lp_token self.version = _version self.factory = msg.sender symbol: String[26] = ERC20Extended(_lp_token).symbol() name: String[64] = concat("Beets ", symbol, " Gauge Deposit") self.name = name self.symbol = concat(symbol, "-gauge") self.period_timestamp[0] = block.timestamp self.DOMAIN_SEPARATOR = keccak256( _abi_encode( DOMAIN_TYPE_HASH, keccak256(name), keccak256(self.version), chain.id, self ) )
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A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.