Address Contract Partially Verified
Address
0x20cD2E7Ec8F5d8b337fe46a4F565Ccef1561b9a9
Balance
0 ETH
Nonce
1
Code Size
10934 bytes
Creator
0x16D232F3...E4d3 at tx 0x1b242998...e1299d
Indexed Transactions
0
Contract Bytecode
10934 bytes
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
Verified Source Code Partial Match
Compiler: v0.5.16+commit.9c3226ce
EVM: istanbul
Optimization: No
ESG.sol 300 lines
pragma solidity ^0.5.16;
contract ESG {
/// @notice EIP-20 token name for this token
string public constant name = "ESG";
/// @notice EIP-20 token symbol for this token
string public constant symbol = "ESG";
/// @notice EIP-20 token decimals for this token
uint8 public constant decimals = 18;
/// @notice Total number of tokens in circulation
uint public constant totalSupply = 49000000e18; // 49 million ESG in Ethereum
/// @notice Allowance amounts on behalf of others
mapping (address => mapping (address => uint96)) internal allowances;
/// @notice Official record of token balances for each account
mapping (address => uint96) internal balances;
/// @notice A record of each accounts delegate
mapping (address => address) public delegates;
/// @notice A checkpoint for marking number of votes from a given block
struct Checkpoint {
uint32 fromBlock;
uint96 votes;
}
/// @notice A record of votes checkpoints for each account, by index
mapping (address => mapping (uint32 => Checkpoint)) public checkpoints;
/// @notice The number of checkpoints for each account
mapping (address => uint32) public numCheckpoints;
/// @notice The EIP-712 typehash for the contract's domain
bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)");
/// @notice The EIP-712 typehash for the delegation struct used by the contract
bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)");
/// @notice A record of states for signing / validating signatures
mapping (address => uint) public nonces;
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/// @notice The standard EIP-20 transfer event
event Transfer(address indexed from, address indexed to, uint256 amount);
/// @notice The standard EIP-20 approval event
event Approval(address indexed owner, address indexed spender, uint256 amount);
/**
* @notice Construct a new ESG token
* @param account The initial account to grant all the tokens
*/
constructor (address account) public{
balances[account] = uint96(totalSupply);
emit Transfer(address(0), account, totalSupply);
}
/**
* @notice Get the number of tokens `spender` is approved to spend on behalf of `account`
* @param account The address of the account holding the funds
* @param spender The address of the account spending the funds
* @return The number of tokens approved
*/
function allowance(address account, address spender) external view returns (uint) {
return allowances[account][spender];
}
/**
* @notice Approve `spender` to transfer up to `amount` from `src`
* @dev This will overwrite the approval amount for `spender`
* and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
* @param spender The address of the account which may transfer tokens
* @param rawAmount The number of tokens that are approved (2^256-1 means infinite)
* @return Whether or not the approval succeeded
*/
function approve(address spender, uint rawAmount) external returns (bool) {
uint96 amount;
if (rawAmount == uint(0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)) {
amount = uint96(0xffffffffffffffffffffffff);
} else {
amount = safe96(rawAmount, "ESG::approve: amount exceeds 96 bits");
}
allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
/**
* @notice Get the number of tokens held by the `account`
* @param account The address of the account to get the balance of
* @return The number of tokens held
*/
function balanceOf(address account) external view returns (uint) {
return balances[account];
}
/**
* @notice Transfer `amount` tokens from `msg.sender` to `dst`
* @param dst The address of the destination account
* @param rawAmount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transfer(address dst, uint rawAmount) external returns (bool) {
uint96 amount = safe96(rawAmount, "ESG::transfer: amount exceeds 96 bits");
_transferTokens(msg.sender, dst, amount);
return true;
}
/**
* @notice Transfer `amount` tokens from `src` to `dst`
* @param src The address of the source account
* @param dst The address of the destination account
* @param rawAmount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transferFrom(address src, address dst, uint rawAmount) external returns (bool) {
address spender = msg.sender;
uint96 spenderAllowance = allowances[src][spender];
uint96 amount = safe96(rawAmount, "ESG::transferFrom: amount exceeds 96 bits");
if (spender != src && spenderAllowance != uint96(0xffffffffffffffffffffffff)) {
uint96 newAllowance = sub96(spenderAllowance, amount, "ESG::transferFrom: transfer amount exceeds spender allowance");
allowances[src][spender] = newAllowance;
emit Approval(src, spender, newAllowance);
}
_transferTokens(src, dst, amount);
return true;
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) external {
return _delegate(msg.sender, delegatee);
}
/**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function delegateBySig(address delegatee, uint nonce, uint expiry, uint8 v, bytes32 r, bytes32 s) external {
bytes32 domainSeparator = keccak256(abi.encode(DOMAIN_TYPEHASH, keccak256(bytes(name)), getChainId(), address(this)));
bytes32 structHash = keccak256(abi.encode(DELEGATION_TYPEHASH, delegatee, nonce, expiry));
bytes32 digest = keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "ESG::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "ESG::delegateBySig: invalid nonce");
require(block.timestamp <= expiry, "ESG::delegateBySig: signature expired");
return _delegate(signatory, delegatee);
}
/**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function getCurrentVotes(address account) external view returns (uint96) {
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
/**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/
function getPriorVotes(address account, uint blockNumber) external view returns (uint96) {
require(blockNumber < block.number, "ESG::getPriorVotes: not yet determined");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
// Next check implicit zero balance
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
function _delegate(address delegator, address delegatee) internal {
address currentDelegate = delegates[delegator];
uint96 delegatorBalance = balances[delegator];
delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _transferTokens(address src, address dst, uint96 amount) internal {
require(src != address(0), "ESG::_transferTokens: cannot transfer from the zero address");
require(dst != address(0), "ESG::_transferTokens: cannot transfer to the zero address");
balances[src] = sub96(balances[src], amount, "ESG::_transferTokens: transfer amount exceeds balance");
balances[dst] = add96(balances[dst], amount, "ESG::_transferTokens: transfer amount overflows");
emit Transfer(src, dst, amount);
_moveDelegates(delegates[src], delegates[dst], amount);
}
function _moveDelegates(address srcRep, address dstRep, uint96 amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
uint32 srcRepNum = numCheckpoints[srcRep];
uint96 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint96 srcRepNew = sub96(srcRepOld, amount, "ESG::_moveDelegates: vote amount underflows");
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
uint32 dstRepNum = numCheckpoints[dstRep];
uint96 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint96 dstRepNew = add96(dstRepOld, amount, "ESG::_moveDelegates: vote amount overflows");
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(address delegatee, uint32 nCheckpoints, uint96 oldVotes, uint96 newVotes) internal {
uint32 blockNumber = safe32(block.number, "ESG::_writeCheckpoint: block number exceeds 32 bits");
if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
numCheckpoints[delegatee] = nCheckpoints + 1;
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
function safe96(uint n, string memory errorMessage) internal pure returns (uint96) {
require(n < 2**96, errorMessage);
return uint96(n);
}
function add96(uint96 a, uint96 b, string memory errorMessage) internal pure returns (uint96) {
uint96 c = a + b;
require(c >= a, errorMessage);
return c;
}
function sub96(uint96 a, uint96 b, string memory errorMessage) internal pure returns (uint96) {
require(b <= a, errorMessage);
return a - b;
}
function getChainId() internal pure returns (uint) {
uint256 chainId;
assembly { chainId := chainid() }
return chainId;
}
}
Read Contract
DELEGATION_TYPEHASH 0xe7a324dc → bytes32
DOMAIN_TYPEHASH 0x20606b70 → bytes32
allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
checkpoints 0xf1127ed8 → uint32, uint96
decimals 0x313ce567 → uint8
delegates 0x587cde1e → address
getCurrentVotes 0xb4b5ea57 → uint96
getPriorVotes 0x782d6fe1 → uint96
name 0x06fdde03 → string
nonces 0x7ecebe00 → uint256
numCheckpoints 0x6fcfff45 → uint32
symbol 0x95d89b41 → string
totalSupply 0x18160ddd → uint256
Write Contract 5 functions
These functions modify contract state and require a wallet transaction to execute.
approve 0x095ea7b3
address spender
uint256 rawAmount
returns: bool
delegate 0x5c19a95c
address delegatee
delegateBySig 0xc3cda520
address delegatee
uint256 nonce
uint256 expiry
uint8 v
bytes32 r
bytes32 s
transfer 0xa9059cbb
address dst
uint256 rawAmount
returns: bool
transferFrom 0x23b872dd
address src
address dst
uint256 rawAmount
returns: bool
Recent Transactions
No transactions found for this address