Address Contract Partially Verified
Address
0x48827c79872A6Ffd439C96818AFbC8a317B2F717
Balance
0 ETH
Nonce
1
Code Size
8583 bytes
Creator
0x71559A91...9Faa at tx 0xe0b1ca84...e4a0bc
Indexed Transactions
0 (1 on-chain, 0.9% indexed)
Contract Bytecode
8583 bytes
0x60806040526004361061012e5760003560e01c80638da5cb5b116100ab578063a7bb58031161006f578063a7bb5803146103cf578063cb1468791461040e578063d0d41fe114610437578063e35c72a814610460578063f2fde38b1461049d578063fa540801146104c657610135565b80638da5cb5b146102c25780639723fb6d146102ed57806397aba7f91461032a5780639cb2c63e146103675780639d76ea58146103a457610135565b8063527913b1116100f2578063527913b11461021057806358979bfe1461023b578063626be56714610264578063648ece851461028f578063715018a6146102ab57610135565b8063022914a71461013a5780632f48ab7d146101785780633ad10ef6146101a35780633ccfd60b146101ce5780633e413bee146101e557610135565b3661013557005b600080fd5b34801561014657600080fd5b50610161600480360381019061015c9190611359565b610503565b60405161016f92919061139f565b60405180910390f35b34801561018457600080fd5b5061018d610527565b60405161019a91906113d7565b60405180910390f35b3480156101af57600080fd5b506101b861054d565b6040516101c591906113d7565b60405180910390f35b3480156101da57600080fd5b506101e3610573565b005b3480156101f157600080fd5b506101fa61063e565b60405161020791906113d7565b60405180910390f35b34801561021c57600080fd5b50610225610664565b60405161023291906113f2565b60405180910390f35b34801561024757600080fd5b50610262600480360381019061025d9190611359565b61066a565b005b34801561027057600080fd5b5061027961072a565b60405161028691906113f2565b60405180910390f35b6102a960048036038101906102a4919061149e565b610730565b005b3480156102b757600080fd5b506102c06109e0565b005b3480156102ce57600080fd5b506102d7610a68565b6040516102e491906113d7565b60405180910390f35b3480156102f957600080fd5b50610314600480360381019061030f9190611574565b610a91565b60405161032191906115bc565b60405180910390f35b34801561033657600080fd5b50610351600480360381019061034c919061174e565b610ab1565b60405161035e91906113d7565b60405180910390f35b34801561037357600080fd5b5061038e600480360381019061038991906117aa565b610b20565b60405161039b9190611846565b60405180910390f35b3480156103b057600080fd5b506103b9610b5f565b6040516103c691906113d7565b60405180910390f35b3480156103db57600080fd5b506103f660048036038101906103f19190611861565b610b85565b604051610405939291906118c6565b60405180910390f35b34801561041a57600080fd5b5061043560048036038101906104309190611359565b610bed565b005b34801561044357600080fd5b5061045e60048036038101906104599190611359565b610cad565b005b34801561046c57600080fd5b50610487600480360381019061048291906118fd565b610d6d565b60405161049491906115bc565b60405180910390f35b3480156104a957600080fd5b506104c460048036038101906104bf9190611359565b610dd5565b005b3480156104d257600080fd5b506104ed60048036038101906104e891906119cf565b610ecc565b6040516104fa9190611846565b60405180910390f35b60066020528060005260406000206000915090508060000154908060010154905082565b600260009054906101000a900473ffffffffffffffffffffffffffffffffffffffff1681565b600160009054906101000a900473ffffffffffffffffffffffffffffffffffffffff1681565b61057b610efc565b73ffffffffffffffffffffffffffffffffffffffff16610599610a68565b73ffffffffffffffffffffffffffffffffffffffff16146105ef576040517f08c379a00000000000000000000000000000000000000000000000000000000081526004016105e690611a59565b60405180910390fd5b60004711610632576040517f08c379a000000000000000000000000000000000000000000000000000000000815260040161062990611ac5565b60405180910390fd5b61063c3347610f04565b565b600360009054906101000a900473ffffffffffffffffffffffffffffffffffffffff1681565b60085481565b610672610efc565b73ffffffffffffffffffffffffffffffffffffffff16610690610a68565b73ffffffffffffffffffffffffffffffffffffffff16146106e6576040517f08c379a00000000000000000000000000000000000000000000000000000000081526004016106dd90611a59565b60405180910390fd5b80600260006101000a81548173ffffffffffffffffffffffffffffffffffffffff021916908373ffffffffffffffffffffffffffffffffffffffff16021790555050565b60075481565b61078b61073b610a68565b33888b8b8a8a89898080601f016020809104026020016040519081016040528093929190818152602001838380828437600081840152601f19601f82011690508083019250505050505050610d6d565b80156107bb5750600015156005600086815260200190815260200160002060009054906101000a900460ff161515145b6107fa576040517f08c379a00000000000000000000000000000000000000000000000000000000081526004016107f190611b31565b60405180910390fd5b600073ffffffffffffffffffffffffffffffffffffffff168373ffffffffffffffffffffffffffffffffffffffff16146108345782610836565b335b925086600660008573ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff168152602001908152602001600020600101600082825461088a9190611b80565b9250508190555084600660008573ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff16815260200190815260200160002060000160008282546108e39190611b80565b9250508190555084600760008282546108fc9190611b80565b9250508190555086600860008282546109159190611b80565b9250508190555061092888878786611004565b60016005600086815260200190815260200160002060006101000a81548160ff0219169083151502179055508873ffffffffffffffffffffffffffffffffffffffff168373ffffffffffffffffffffffffffffffffffffffff163373ffffffffffffffffffffffffffffffffffffffff167f746b684d2e8096d01e8e457c9ac5f3365f1940bfe560e06d71b163ee8da5aeb98a89600060405161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Verified Source Code Partial Match
Compiler: v0.8.13+commit.abaa5c0e
EVM: london
Optimization: No
FlexafinaIdo.sol 363 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.13;
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
interface IBEP20 {
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(
address _owner,
address spender
) external view returns (uint256);
}
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "You are not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
contract VerifySignature {
function getMessageHash(
address _to,
uint256 _payment,
uint256 _amount,
uint256 _usdAmount,
uint256 _amountOut,
uint256 _nonce
) public pure returns (bytes32) {
return
keccak256(
abi.encodePacked(
_to,
_payment,
_amount,
_usdAmount,
_amountOut,
_nonce
)
);
}
function getEthSignedMessageHash(
bytes32 _messageHash
) public pure returns (bytes32) {
/*
Signature is produced by signing a keccak256 hash with the following format:
"\x19Ethereum Signed Message\n" + len(msg) + msg
*/
return
keccak256(
abi.encodePacked(
"\x19Ethereum Signed Message:\n32",
_messageHash
)
);
}
function verify(
address _signer,
address _to,
uint256 _payment,
uint256 _amount,
uint256 _usdAmount,
uint256 _amountOut,
uint256 _nonce,
bytes memory signature
) public pure returns (bool) {
bytes32 messageHash = getMessageHash(
_to,
_payment,
_amount,
_usdAmount,
_amountOut,
_nonce
);
bytes32 ethSignedMessageHash = getEthSignedMessageHash(messageHash);
return recoverSigner(ethSignedMessageHash, signature) == _signer;
}
function recoverSigner(
bytes32 _ethSignedMessageHash,
bytes memory _signature
) public pure returns (address) {
(bytes32 r, bytes32 s, uint8 v) = splitSignature(_signature);
return ecrecover(_ethSignedMessageHash, v, r, s);
}
function splitSignature(
bytes memory sig
) public pure returns (bytes32 r, bytes32 s, uint8 v) {
require(sig.length == 65, "invalid signature length");
assembly {
/*
First 32 bytes stores the length of the signature
add(sig, 32) = pointer of sig + 32
effectively, skips first 32 bytes of signature
mload(p) loads next 32 bytes starting at the memory address p into memory
*/
// first 32 bytes, after the length prefix
r := mload(add(sig, 32))
// second 32 bytes
s := mload(add(sig, 64))
// final byte (first byte of the next 32 bytes)
v := byte(0, mload(add(sig, 96)))
}
// implicitly return (r, s, v)
}
}
library TransferHelper {
function safeTransferETH(address to, uint256 value) internal {
(bool success, ) = to.call{value: value}(new bytes(0));
require(success, "TransferHelper: ETH_TRANSFER_FAILED");
}
function safeTransferFrom(
address token,
address from,
address to,
uint256 value
) internal {
(bool success, bytes memory data) = token.call(
abi.encodeWithSelector(0x23b872dd, from, to, value)
);
require(
success && (data.length == 0 || abi.decode(data, (bool))),
"TransferHelper: TRANSFER_FROM_FAILED"
);
}
}
contract FlexafinaIdo is Ownable, VerifySignature {
receive() external payable {}
event Buy(
address indexed sender,
address indexed recipient,
uint256 amount,
uint256 tokenAmount,
uint256 refTokenAmount,
address indexed ref
);
address public devAddress = 0x94CA966dC93e1b1b57f9a9325d74565D54B5a362;
address public usdt = 0xdAC17F958D2ee523a2206206994597C13D831ec7;
address public usdc = address(0);
address public tokenAddress = 0xc67cBf584532f39fe8dAb727854387623C59B3A8;
mapping(uint256 => bool) public usedNonce;
struct Owner {
uint256 tokenAmount;
uint256 usdAmount;
}
mapping(address => Owner) public owners;
uint256 public totalToken;
uint256 public totalUsd;
constructor() {}
function withdraw() public onlyOwner {
require(address(this).balance > 0, "Invalid amount");
TransferHelper.safeTransferETH(msg.sender, address(this).balance);
}
function setDevAddress(address _devAddress) public onlyOwner {
devAddress = _devAddress;
}
function setUsdt(address _usdt) public onlyOwner {
usdt = _usdt;
}
function setUsdc(address _usdc) public onlyOwner {
usdc = _usdc;
}
function safeTransfer(
uint256 _amount,
uint256 _payment,
address _sender,
address _receiver
) internal {
if (_payment == 1) {
TransferHelper.safeTransferETH(_receiver, _amount);
} else {
TransferHelper.safeTransferFrom(
_payment == 2 ? usdt : usdc,
_sender,
_receiver,
_amount
);
}
}
function transfer(
// address _ref,
uint256 _amount,
uint256 _payment
, uint256 _amountOut,
address _recipient
) internal {
// tranfer token usdt vs eth to wallet
safeTransfer(_amount, _payment, msg.sender, devAddress);
// // transfer token to _recipient
TransferHelper.safeTransferFrom(
tokenAddress,
owner(),
_recipient,
_amountOut
);
}
function buyFlexa(
address _ref,
uint256 _amount,
uint256 _usdAmount,
uint256 _payment,
uint256 _amountOut,
uint256 _nonce,
address _recipient,
bytes calldata _signature
) public payable {
require(
verify(
owner(),
msg.sender,
_payment,
_amount,
_usdAmount,
_amountOut,
_nonce,
_signature
) && usedNonce[_nonce] == false,
"Invalid signature"
);
_recipient = _recipient == address(0) ? msg.sender : _recipient;
owners[_recipient].usdAmount += _usdAmount;
owners[_recipient].tokenAmount += _amountOut;
totalToken += _amountOut;
totalUsd += _usdAmount;
transfer(_amount, _payment,_amountOut,_recipient);
usedNonce[_nonce] = true;
emit Buy(msg.sender, _recipient, _usdAmount, _amountOut, 0, _ref);
}
}
Read Contract
devAddress 0x3ad10ef6 → address
getEthSignedMessageHash 0xfa540801 → bytes32
getMessageHash 0x9cb2c63e → bytes32
owner 0x8da5cb5b → address
owners 0x022914a7 → uint256, uint256
recoverSigner 0x97aba7f9 → address
splitSignature 0xa7bb5803 → bytes32, bytes32, uint8
tokenAddress 0x9d76ea58 → address
totalToken 0x626be567 → uint256
totalUsd 0x527913b1 → uint256
usdc 0x3e413bee → address
usdt 0x2f48ab7d → address
usedNonce 0x9723fb6d → bool
verify 0xe35c72a8 → bool
Write Contract 7 functions
These functions modify contract state and require a wallet transaction to execute.
buyFlexa 0x648ece85
address _ref
uint256 _amount
uint256 _usdAmount
uint256 _payment
uint256 _amountOut
uint256 _nonce
address _recipient
bytes _signature
renounceOwnership 0x715018a6
No parameters
setDevAddress 0xd0d41fe1
address _devAddress
setUsdc 0xcb146879
address _usdc
setUsdt 0x58979bfe
address _usdt
transferOwnership 0xf2fde38b
address newOwner
withdraw 0x3ccfd60b
No parameters
Recent Transactions
This address has 1 on-chain transactions, but only 0.9% of the chain is indexed. Transactions will appear as indexing progresses. View on Etherscan →