Cryo Explorer Ethereum Mainnet

Address Contract Partially Verified

Address 0xc52FaFDc900cB92Ae01E6E4F8979aF7f436e2EB2
Balance 0 ETH
Nonce 1
Code Size 3058 bytes
Creator 0xC72C8a25...9a73 at tx 0x41640d56...4abaf8
Last Active
Indexed Transactions 9 (24,178,454 → 24,318,515)
Gas Used (indexed) 385,990
External Etherscan · Sourcify

Contract Bytecode

3058 bytes
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Verified Source Code Partial Match

Compiler: v0.3.9+commit.66b96705
SettledEthXYToken.vy 162 lines 
# @version ^0.3.9
# @title Settled EthXYToken

from vyper.interfaces import ERC20

implements: ERC20

event Transfer:
    _from: indexed(address)
    _to: indexed(address)
    _value: uint256

event Approval:
    _owner: indexed(address)
    _spender: indexed(address)
    _value: uint256

_name: constant(String[24]) = "Settled ETHXY Token"
_symbol: constant(String[5]) = "SEXY"
decimals: public(constant(uint256)) = 18
totalSupply: public(uint256)

balanceOf: public(HashMap[address, uint256])
allowance: public(HashMap[address, HashMap[address, uint256]])

minter: public(address)

@view
@external
def name() -> String[24]:
    return _name

@view
@external
def symbol() -> String[5]:
    return _symbol

@external
def __init__():
    self.minter = msg.sender

@external
def set_minter(minter: address):
    assert msg.sender == self.minter
    self.minter = minter

@external
def approve(spender: address, amount: uint256) -> bool:
    self.allowance[msg.sender][spender] = amount
    log Approval(msg.sender, spender, amount)
    return True

@external
def increaseAllowance(spender: address, addedValue: uint256) -> bool:
    self.allowance[msg.sender][spender] += addedValue
    log Approval(msg.sender, spender, self.allowance[msg.sender][spender])
    return True

@external
def decreaseAllowance(spender: address, subtractedValue: uint256) -> bool:
    self.allowance[msg.sender][spender] -= subtractedValue
    log Approval(msg.sender, spender, self.allowance[msg.sender][spender])
    return True

@external
def transfer(_to: address, _value: uint256) -> bool:
    self.balanceOf[msg.sender] -= _value
    self.balanceOf[_to] += _value
    log Transfer(msg.sender, _to, _value)
    return True

@external
def transferFrom(_from: address, _to: address, _value: uint256) -> bool:
    self.allowance[_from][msg.sender] -= _value
    self.balanceOf[_from] -= _value
    self.balanceOf[_to] += _value
    log Transfer(_from, _to, _value)
    return True

@external
def mint(_to: address, _value: uint256):
    assert msg.sender == self.minter
    self.balanceOf[_to] += _value
    self.totalSupply += _value
    log Transfer(ZERO_ADDRESS, _to, _value)

@external
def burn(_value: uint256) -> uint256:
    self.balanceOf[msg.sender] -= _value
    self.totalSupply -= _value
    log Transfer(msg.sender, ZERO_ADDRESS, _value)
    return _value

################################################################
#                           EIP-2612                           #
################################################################

nonces: public(HashMap[address, uint256])

_DOMAIN_TYPEHASH: 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)")
_MINT_TYPE_HASH: constant(bytes32) = keccak256("Mint(address to,uint256 value,uint256 amountMinted)")


@external
def permit(owner: address, spender: address, amount: uint256, deadline: uint256, v: uint8, r: bytes32, s: bytes32):
    assert deadline >= block.timestamp
    nonce: uint256 = self.nonces[owner]
    self.nonces[owner] = nonce + 1

    domain_separator: bytes32 = keccak256(
        _abi_encode(_DOMAIN_TYPEHASH, keccak256(_name), keccak256("1.0"), chain.id, self)
    )

    struct_hash: bytes32 = keccak256(_abi_encode(_PERMIT_TYPE_HASH, owner, spender, amount, nonce, deadline))
    hash: bytes32 = keccak256(
        concat(
            b"\x19\x01",
            domain_separator,
            struct_hash
        )
    )

    assert owner == ecrecover(hash, v, r, s)
    self.nonces[owner] += 1
    self.allowance[owner][spender] = amount
    log Approval(owner, spender, amount)

amount_minted: public(HashMap[address, uint256])

@external
def mint_by_sig(to: address, amount: uint256, v: uint8, r: bytes32, s: bytes32):
    domain_separator: bytes32 = keccak256(
        _abi_encode(_DOMAIN_TYPEHASH, keccak256(_name), keccak256("1.0"), chain.id, self)
    )

    struct_hash: bytes32 = keccak256(_abi_encode(_MINT_TYPE_HASH, to, amount, self.amount_minted[to]))
    hash: bytes32 = keccak256(
        concat(
            b"\x19\x01",
            domain_separator,
            struct_hash
        )
    )

    assert self.minter == ecrecover(hash, v, r, s)

    self.amount_minted[to] += amount
    self._mint(to, amount)

@internal
def _mint(_to: address, _value: uint256):
    self.balanceOf[_to] += _value
    self.totalSupply += _value
    log Transfer(ZERO_ADDRESS, _to, _value)

@internal
def _burn(_from: address, _value: uint256):
    assert self.balanceOf[_from] >= _value
    self.balanceOf[_from] -= _value
    self.totalSupply -= _value
    log Transfer(_from, ZERO_ADDRESS, _value)

Read Contract

allowance 0xdd62ed3e → uint256
amount_minted 0x99d05550 → uint256
balanceOf 0x70a08231 → uint256
decimals 0x313ce567 → uint256
minter 0x07546172 → address
name 0x06fdde03 → string
nonces 0x7ecebe00 → uint256
symbol 0x95d89b41 → string
totalSupply 0x18160ddd → uint256

Write Contract 10 functions

These functions modify contract state and require a wallet transaction to execute.

approve 0x095ea7b3
address spender
uint256 amount
returns: bool
burn 0x42966c68
uint256 _value
returns: uint256
decreaseAllowance 0xa457c2d7
address spender
uint256 subtractedValue
returns: bool
increaseAllowance 0x39509351
address spender
uint256 addedValue
returns: bool
mint 0x40c10f19
address _to
uint256 _value
mint_by_sig 0xa79b092f
address to
uint256 amount
uint8 v
bytes32 r
bytes32 s
permit 0xd505accf
address owner
address spender
uint256 amount
uint256 deadline
uint8 v
bytes32 r
bytes32 s
set_minter 0x1652e9fc
address minter
transfer 0xa9059cbb
address _to
uint256 _value
returns: bool
transferFrom 0x23b872dd
address _from
address _to
uint256 _value
returns: bool

Top Interactions

AddressTxnsSentReceived
0x9642b23E...5D4E 3 3
0x7DB0ecE6...496c 1 1
0xD9F0834E...7e82 1 1
0x0347B84b...68dE 1 1
0xB2943FF4...c66a 1 1
0x23F9D580...391A 1 1
0xD6d65Ae6...2614 1 1

Token Balances (1)

View Transfers →
USDC 1207.0001
Transactions (9) Internal Txs Token Transfers Events

Recent Transactions

CSV
|
Hash Method Block Age From/To Value Txn Fee Type
0xe47fd0ca...3d4d5a approve 24,318,515 IN 0xD9F0834E...7e82 0 ETH 0.000001212805 ETH EIP-1559
0xe46cd44a...fb4ccf transfer 24,316,921 IN 0x9642b23E...5D4E 0 ETH 0.000008331086 ETH Legacy
0x794f5ba2...9a90db approve 24,290,566 IN 0x7DB0ecE6...496c 0 ETH 0.000055404979 ETH Legacy
0x8237f59b...bde440 approve 24,281,756 IN 0x0347B84b...68dE 0 ETH 0.000003081344 ETH EIP-1559
0x50ff96c5...d4f584 transfer 24,245,917 IN 0x9642b23E...5D4E 0 ETH 0.000003339186 ETH Legacy
0x5de3854f...d62746 approve 24,242,441 IN 0xB2943FF4...c66a 0 ETH 0.000003191835 ETH EIP-1559
0x9ac4e945...4b834a approve 24,218,934 IN 0xD6d65Ae6...2614 0 ETH 0.000008753897 ETH EIP-1559
0x9ce69f3a...7a6733 approve 24,179,706 IN 0x9642b23E...5D4E 0 ETH 0.000004479063 ETH Legacy
0xef310ba3...a97753 approve 24,178,454 IN 0x23F9D580...391A 0 ETH 0.000095363836 ETH EIP-1559