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Latest 25 from a total of 121 transactions
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Withdraw | 20294032 | 39 days ago | IN | 0 ETH | 0.00046545 | ||||
Withdraw | 20180890 | 55 days ago | IN | 0 ETH | 0.0018167 | ||||
Approve | 19433897 | 160 days ago | IN | 0 ETH | 0.00191047 | ||||
Increase Allowan... | 19433793 | 160 days ago | IN | 0 ETH | 0.00296792 | ||||
Withdraw | 19239833 | 187 days ago | IN | 0 ETH | 0.00866536 | ||||
Withdraw | 19024933 | 217 days ago | IN | 0 ETH | 0.0127547 | ||||
Withdraw | 19017935 | 218 days ago | IN | 0 ETH | 0.00966877 | ||||
Deposit | 19017664 | 218 days ago | IN | 0 ETH | 0.01121872 | ||||
Withdraw | 19017652 | 218 days ago | IN | 0 ETH | 0.00942274 | ||||
Deposit | 19017644 | 218 days ago | IN | 0 ETH | 0.00940378 | ||||
Withdraw | 19010517 | 219 days ago | IN | 0 ETH | 0.00840205 | ||||
Deposit | 19009344 | 219 days ago | IN | 0 ETH | 0.00873415 | ||||
Withdraw | 18948259 | 228 days ago | IN | 0 ETH | 0.00484973 | ||||
Withdraw | 18939761 | 229 days ago | IN | 0 ETH | 0.0046348 | ||||
Deposit | 18939722 | 229 days ago | IN | 0 ETH | 0.00517869 | ||||
Deposit | 18925357 | 231 days ago | IN | 0 ETH | 0.00556707 | ||||
Withdraw | 18909484 | 233 days ago | IN | 0 ETH | 0.00418654 | ||||
Deposit | 18907136 | 234 days ago | IN | 0 ETH | 0.00754127 | ||||
Withdraw | 18904919 | 234 days ago | IN | 0 ETH | 0.0049755 | ||||
Deposit | 18904901 | 234 days ago | IN | 0 ETH | 0.00568506 | ||||
Withdraw | 18904323 | 234 days ago | IN | 0 ETH | 0.00583831 | ||||
Deposit | 18903933 | 234 days ago | IN | 0 ETH | 0.00544409 | ||||
Deposit | 18896131 | 235 days ago | IN | 0 ETH | 0.00585952 | ||||
Deposit | 18860946 | 240 days ago | IN | 0 ETH | 0.00668403 | ||||
Withdraw | 18849242 | 242 days ago | IN | 0 ETH | 0.00975179 |
Latest 1 internal transaction
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Parent Transaction Hash | Block | From | To | |||
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18472928 | 294 days ago | Contract Creation | 0 ETH |
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Minimal Proxy Contract for 0xdc892358d55d5ae1ec47a531130d62151eba36e5
Contract Name:
Vyper_contract
Compiler Version
vyper:0.3.1
Contract Source Code (Vyper language format)
# @version 0.3.1 """ @title Liquidity Gauge @author Curve Finance @license MIT @notice Implementation contract for use with Curve Factory """ from vyper.interfaces import ERC20 implements: ERC20 interface CRV20: def future_epoch_time_write() -> uint256: nonpayable def rate() -> uint256: view interface Controller: def checkpoint_gauge(addr: address): nonpayable def gauge_relative_weight(addr: address, time: uint256) -> uint256: view interface ERC20Extended: def symbol() -> String[32]: view interface ERC1271: def isValidSignature(_hash: bytes32, _signature: Bytes[65]) -> bytes32: view interface Factory: def admin() -> address: view interface Minter: def minted(user: address, gauge: address) -> uint256: view interface VotingEscrow: def user_point_epoch(addr: address) -> uint256: view def user_point_history__ts(addr: address, epoch: uint256) -> uint256: view interface VotingEscrowBoost: def adjusted_balance_of(_account: address) -> uint256: view event Deposit: provider: indexed(address) value: uint256 event Withdraw: provider: indexed(address) value: uint256 event UpdateLiquidityLimit: user: indexed(address) original_balance: uint256 original_supply: uint256 working_balance: uint256 working_supply: uint256 event CommitOwnership: admin: address event ApplyOwnership: admin: address event Transfer: _from: indexed(address) _to: indexed(address) _value: uint256 event Approval: _owner: indexed(address) _spender: indexed(address) _value: uint256 struct Reward: token: address distributor: address period_finish: uint256 rate: uint256 last_update: uint256 integral: uint256 CLAIM_FREQUENCY: constant(uint256) = 3600 MAX_REWARDS: constant(uint256) = 8 TOKENLESS_PRODUCTION: constant(uint256) = 40 WEEK: constant(uint256) = 604800 # keccak256("isValidSignature(bytes32,bytes)")[:4] << 224 ERC1271_MAGIC_VAL: constant(bytes32) = 0x1626ba7e00000000000000000000000000000000000000000000000000000000 VERSION: constant(String[8]) = "v5.0.0" EIP712_TYPEHASH: constant(bytes32) = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)") PERMIT_TYPEHASH: constant(bytes32) = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)") CRV: constant(address) = 0xD533a949740bb3306d119CC777fa900bA034cd52 GAUGE_CONTROLLER: constant(address) = 0x2F50D538606Fa9EDD2B11E2446BEb18C9D5846bB MINTER: constant(address) = 0xd061D61a4d941c39E5453435B6345Dc261C2fcE0 VEBOOST_PROXY: constant(address) = 0x8E0c00ed546602fD9927DF742bbAbF726D5B0d16 VOTING_ESCROW: constant(address) = 0x5f3b5DfEb7B28CDbD7FAba78963EE202a494e2A2 # ERC20 balanceOf: public(HashMap[address, uint256]) totalSupply: public(uint256) allowance: public(HashMap[address, HashMap[address, uint256]]) name: public(String[64]) symbol: public(String[40]) # ERC2612 DOMAIN_SEPARATOR: public(bytes32) nonces: public(HashMap[address, uint256]) # Gauge factory: public(address) lp_token: public(address) is_killed: public(bool) # [future_epoch_time uint40][inflation_rate uint216] inflation_params: uint256 # For tracking external rewards reward_count: public(uint256) 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 -> [uint128 claimable amount][uint128 claimed amount] claim_data: HashMap[address, HashMap[address, uint256]] working_balances: public(HashMap[address, uint256]) working_supply: public(uint256) # 1e18 * ∫(rate(t) / totalSupply(t) dt) from (last_action) till checkpoint integrate_inv_supply_of: public(HashMap[address, uint256]) integrate_checkpoint_of: public(HashMap[address, uint256]) # ∫(balance * rate(t) / totalSupply(t) dt) from 0 till checkpoint # Units: rate * t = already number of coins per address to issue integrate_fraction: public(HashMap[address, uint256]) # The goal is to be able to calculate ∫(rate * balance / totalSupply dt) from 0 till checkpoint # All values are kept in units of being multiplied by 1e18 period: public(int128) # array of reward tokens reward_tokens: public(address[MAX_REWARDS]) period_timestamp: public(uint256[100000000000000000000000000000]) # 1e18 * ∫(rate(t) / totalSupply(t) dt) from 0 till checkpoint integrate_inv_supply: public(uint256[100000000000000000000000000000]) # bump epoch when rate() changes @external def __init__(): # prevent initialization of implementation self.lp_token = 0x000000000000000000000000000000000000dEaD # Internal Functions @internal def _checkpoint(addr: address): """ @notice Checkpoint for a user @dev Updates the CRV emissions a user is entitled to receive @param addr User address """ _period: int128 = self.period _period_time: uint256 = self.period_timestamp[_period] _integrate_inv_supply: uint256 = self.integrate_inv_supply[_period] inflation_params: uint256 = self.inflation_params rate: uint256 = inflation_params % 2 ** 216 prev_future_epoch: uint256 = shift(inflation_params, -216) new_rate: uint256 = rate if prev_future_epoch >= _period_time: new_rate = CRV20(CRV).rate() self.inflation_params = shift(CRV20(CRV).future_epoch_time_write(), 216) + new_rate if self.is_killed: # Stop distributing inflation as soon as killed rate = 0 new_rate = 0 # prevent distribution when crossing epochs # Update integral of 1/supply if block.timestamp > _period_time: _working_supply: uint256 = self.working_supply Controller(GAUGE_CONTROLLER).checkpoint_gauge(self) prev_week_time: uint256 = _period_time week_time: uint256 = min((_period_time + WEEK) / WEEK * WEEK, block.timestamp) for i in range(500): dt: uint256 = week_time - prev_week_time w: uint256 = Controller(GAUGE_CONTROLLER).gauge_relative_weight(self, prev_week_time / WEEK * WEEK) if _working_supply > 0: if prev_future_epoch >= prev_week_time and prev_future_epoch < week_time: # If we went across one or multiple epochs, apply the rate # of the first epoch until it ends, and then the rate of # the last epoch. # If more than one epoch is crossed - the gauge gets less, # but that'd meen it wasn't called for more than 1 year _integrate_inv_supply += rate * w * (prev_future_epoch - prev_week_time) / _working_supply rate = new_rate _integrate_inv_supply += rate * w * (week_time - prev_future_epoch) / _working_supply else: _integrate_inv_supply += rate * w * dt / _working_supply # On precisions of the calculation # rate ~= 10e18 # last_weight > 0.01 * 1e18 = 1e16 (if pool weight is 1%) # _working_supply ~= TVL * 1e18 ~= 1e26 ($100M for example) # The largest loss is at dt = 1 # Loss is 1e-9 - acceptable if week_time == block.timestamp: break prev_week_time = week_time week_time = min(week_time + WEEK, block.timestamp) _period += 1 self.period = _period self.period_timestamp[_period] = block.timestamp self.integrate_inv_supply[_period] = _integrate_inv_supply # Update user-specific integrals _working_balance: uint256 = self.working_balances[addr] self.integrate_fraction[addr] += _working_balance * (_integrate_inv_supply - self.integrate_inv_supply_of[addr]) / 10 ** 18 self.integrate_inv_supply_of[addr] = _integrate_inv_supply self.integrate_checkpoint_of[addr] = block.timestamp @internal def _checkpoint_rewards(_user: address, _total_supply: uint256, _claim: bool, _receiver: address): """ @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 for i in range(MAX_REWARDS): if i == reward_count: break 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) 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 _update_liquidity_limit(addr: address, l: uint256, L: uint256): """ @notice Calculate limits which depend on the amount of CRV token per-user. Effectively it calculates working balances to apply amplification of CRV production by CRV @param addr User address @param l User's amount of liquidity (LP tokens) @param L Total amount of liquidity (LP tokens) """ # To be called after totalSupply is updated voting_balance: uint256 = VotingEscrowBoost(VEBOOST_PROXY).adjusted_balance_of(addr) voting_total: uint256 = ERC20(VOTING_ESCROW).totalSupply() lim: uint256 = l * TOKENLESS_PRODUCTION / 100 if voting_total > 0: lim += L * voting_balance / voting_total * (100 - TOKENLESS_PRODUCTION) / 100 lim = min(l, lim) old_bal: uint256 = self.working_balances[addr] self.working_balances[addr] = lim _working_supply: uint256 = self.working_supply + lim - old_bal self.working_supply = _working_supply log UpdateLiquidityLimit(addr, l, L, lim, _working_supply) @internal def _transfer(_from: address, _to: address, _value: uint256): """ @notice Transfer tokens as well as checkpoint users """ self._checkpoint(_from) self._checkpoint(_to) if _value != 0: total_supply: uint256 = self.totalSupply is_rewards: bool = self.reward_count != 0 if is_rewards: self._checkpoint_rewards(_from, 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) if is_rewards: self._checkpoint_rewards(_to, total_supply, False, ZERO_ADDRESS) 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 User Facing Functions @external @nonreentrant('lock') def deposit(_value: uint256, _addr: address = msg.sender, _claim_rewards: bool = False): """ @notice Deposit `_value` LP tokens @dev Depositting also claims pending reward tokens @param _value Number of tokens to deposit @param _addr Address to deposit for """ self._checkpoint(_addr) if _value != 0: is_rewards: bool = self.reward_count != 0 total_supply: uint256 = self.totalSupply if is_rewards: self._checkpoint_rewards(_addr, total_supply, _claim_rewards, ZERO_ADDRESS) total_supply += _value new_balance: uint256 = self.balanceOf[_addr] + _value self.balanceOf[_addr] = new_balance self.totalSupply = total_supply self._update_liquidity_limit(_addr, new_balance, total_supply) ERC20(self.lp_token).transferFrom(msg.sender, self, _value) log Deposit(_addr, _value) log Transfer(ZERO_ADDRESS, _addr, _value) @external @nonreentrant('lock') def withdraw(_value: uint256, _claim_rewards: bool = False): """ @notice Withdraw `_value` LP tokens @dev Withdrawing also claims pending reward tokens @param _value Number of tokens to withdraw """ self._checkpoint(msg.sender) if _value != 0: is_rewards: bool = self.reward_count != 0 total_supply: uint256 = self.totalSupply if is_rewards: self._checkpoint_rewards(msg.sender, total_supply, _claim_rewards, ZERO_ADDRESS) total_supply -= _value new_balance: uint256 = self.balanceOf[msg.sender] - _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(msg.sender, _value) log Withdraw(msg.sender, _value) log Transfer(msg.sender, ZERO_ADDRESS, _value) @external @nonreentrant('lock') def claim_rewards(_addr: address = msg.sender, _receiver: address = ZERO_ADDRESS): """ @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 """ if _receiver != ZERO_ADDRESS: assert _addr == msg.sender # dev: cannot redirect when claiming for another user self._checkpoint_rewards(_addr, self.totalSupply, True, _receiver) @external @nonreentrant('lock') def transferFrom(_from: address, _to :address, _value: uint256) -> bool: """ @notice Transfer tokens from one address to another. @dev Transferring claims pending reward tokens for the sender and receiver @param _from address The address which you want to send tokens from @param _to address The address which you want to transfer to @param _value uint256 the amount of tokens to be transferred """ _allowance: uint256 = self.allowance[_from][msg.sender] if _allowance != MAX_UINT256: self.allowance[_from][msg.sender] = _allowance - _value self._transfer(_from, _to, _value) return True @external @nonreentrant('lock') def transfer(_to: address, _value: uint256) -> bool: """ @notice Transfer token for a specified address @dev Transferring claims pending reward tokens for the sender and receiver @param _to The address to transfer to. @param _value The amount to be transferred. """ self._transfer(msg.sender, _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 {incraseAllowance} 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 assert block.timestamp <= _deadline nonce: uint256 = self.nonces[_owner] digest: bytes32 = keccak256( concat( b"\x19\x01", self.DOMAIN_SEPARATOR, keccak256(_abi_encode(PERMIT_TYPEHASH, _owner, _spender, _value, nonce, _deadline)) ) ) if _owner.is_contract: sig: Bytes[65] = concat(_abi_encode(_r, _s), slice(convert(_v, bytes32), 31, 1)) # reentrancy not a concern since this is a staticcall assert ERC1271(_owner).isValidSignature(digest, sig) == ERC1271_MAGIC_VAL else: assert ecrecover(digest, convert(_v, uint256), convert(_r, uint256), convert(_s, uint256)) == _owner self.allowance[_owner][_spender] = _value self.nonces[_owner] = nonce + 1 log Approval(_owner, _spender, _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.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.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 """ assert msg.sender in [addr, MINTER] # dev: unauthorized self._checkpoint(addr) self._update_liquidity_limit(addr, self.balanceOf[addr], self.totalSupply) return True @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 def kick(addr: address): """ @notice Kick `addr` for abusing their boost @dev Only if either they had another voting event, or their voting escrow lock expired @param addr Address to kick """ t_last: uint256 = self.integrate_checkpoint_of[addr] t_ve: uint256 = VotingEscrow(VOTING_ESCROW).user_point_history__ts( addr, VotingEscrow(VOTING_ESCROW).user_point_epoch(addr) ) _balance: uint256 = self.balanceOf[addr] assert ERC20(VOTING_ESCROW).balanceOf(addr) == 0 or t_ve > t_last # dev: kick not allowed assert self.working_balances[addr] > _balance * TOKENLESS_PRODUCTION / 100 # dev: kick not needed self._checkpoint(addr) self._update_liquidity_limit(addr, self.balanceOf[addr], self.totalSupply) # Administrative Functions @external @nonreentrant("lock") def deposit_reward_token(_reward_token: address, _amount: uint256): """ @notice Deposit a reward token for distribution @param _reward_token The reward token being deposited @param _amount The amount of `_reward_token` being deposited """ assert msg.sender == self.reward_data[_reward_token].distributor 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) 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 add_reward(_reward_token: address, _distributor: address): """ @notice Add additional rewards to be distributed to stakers @param _reward_token The token to add as an additional reward @param _distributor Address permitted to fund this contract with the reward token """ assert msg.sender == Factory(self.factory).admin() # dev: only owner reward_count: uint256 = self.reward_count assert reward_count < MAX_REWARDS assert self.reward_data[_reward_token].distributor == ZERO_ADDRESS 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): """ @notice Reassign the reward distributor for a reward token @param _reward_token The reward token to reassign distribution rights to @param _distributor The address of the new distributor """ current_distributor: address = self.reward_data[_reward_token].distributor assert msg.sender == current_distributor or msg.sender == Factory(self.factory).admin() assert current_distributor != ZERO_ADDRESS assert _distributor != ZERO_ADDRESS self.reward_data[_reward_token].distributor = _distributor @external def set_killed(_is_killed: bool): """ @notice Set the killed status for this contract @dev When killed, the gauge always yields a rate of 0 and so cannot mint CRV @param _is_killed Killed status to set """ assert msg.sender == Factory(self.factory).admin() # dev: only owner self.is_killed = _is_killed # View Methods @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 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) return self.integrate_fraction[addr] - Minter(MINTER).minted(addr, self) @view @external def integrate_checkpoint() -> uint256: """ @notice Get the timestamp of the last checkpoint """ return self.period_timestamp[self.period] @view @external def future_epoch_time() -> uint256: """ @notice Get the locally stored CRV future epoch start time """ return shift(self.inflation_params, -216) @view @external def inflation_rate() -> uint256: """ @notice Get the locally stored CRV inflation rate """ return self.inflation_params % 2 ** 216 @view @external def decimals() -> uint256: """ @notice Get the number of decimals for this token @dev Implemented as a view method to reduce gas costs @return uint256 decimal places """ return 18 @view @external def version() -> String[8]: """ @notice Get the version of this gauge contract """ return VERSION # Initializer @external def initialize(_lp_token: address): """ @notice Contract constructor @param _lp_token Liquidity Pool contract address """ assert self.lp_token == ZERO_ADDRESS self.lp_token = _lp_token self.factory = msg.sender symbol: String[32] = ERC20Extended(_lp_token).symbol() name: String[64] = concat("Curve.fi ", symbol, " Gauge Deposit") self.name = name self.symbol = concat(symbol, "-gauge") self.DOMAIN_SEPARATOR = keccak256( _abi_encode(EIP712_TYPEHASH, keccak256(name), keccak256(VERSION), chain.id, self) ) self.period_timestamp[0] = block.timestamp self.inflation_params = shift(CRV20(CRV).future_epoch_time_write(), 216) + CRV20(CRV).rate()
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Multichain Portfolio | 26 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.