Address Contract Partially Verified
Address
0x3c87AAff27f1085B67cd742302939a50E2F2d406
Balance
0 ETH
Nonce
1
Code Size
9324 bytes
Creator
0xDd1F2861...ecB2 at tx 0x1197726f...abd3ab
Indexed Transactions
0
Contract Bytecode
9324 bytes
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Verified Source Code Partial Match
Compiler: v0.8.9+commit.e5eed63a
EVM: london
Optimization: No
BitcoinETFToken.sol 447 lines
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @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 Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 amount) external returns (bool);
}
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
/**
* @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;
}
}
/**
* @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 Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), 'Ownable: caller is not the owner');
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling 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 BitcoinETFToken is Context, IERC20Metadata, Ownable {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private constant _decimals = 18;
uint256 public burnPercentage = 5;
uint256 public constant presaleReserve = 840_000_000 * (10 ** _decimals);
uint256 public constant stakingReserve = 525_000_000 * (10 ** _decimals);
uint256 public constant burnReserve = 525_000_000 * (10 ** _decimals);
uint256 public constant liquidityReserve = 210_000_000 * (10 ** _decimals);
mapping(address => bool) public isWhitelisted;
event BurnPercentageChanged(uint256 oldBurnPercentage, uint256 newBurnPercentage, uint256 timestamp);
/**
* @dev Contract constructor.
* @param name_ The name of the token.
* @param symbol_ The symbol of the token.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
_mint(0xDd1F2861E95295eA691fdA2cc558833E1C6eecB2, presaleReserve);
_mint(0x8AaB0A7f226957bd1b5573cDc6819Ee39f671C40, stakingReserve);
_mint(0x204b34F04874e749F176433F621e6a7d018773B9, burnReserve);
_mint(0xe8B5F9E179e36B85003DE7fFA52a4FF9aB96b339, liquidityReserve);
}
/**
* @dev Decreases the burn percentage of tokens during transfers.Can only be called by the contract owner.
* Emits a `BurnPercentageChanged` event if the burn percentage is decreased successfully.
* @param _burnPercentage The burn percentage to be set, must be between 0 and 5 inclusive and less than the current burn percentage.
*/
function decreaseBurnPercentage(uint256 _burnPercentage) external onlyOwner {
require(_burnPercentage >= 0 && _burnPercentage <= 5, 'unrecognised burn percentage');
require(_burnPercentage < burnPercentage, 'New burn percentage must be less than current value');
emit BurnPercentageChanged(burnPercentage, _burnPercentage, block.timestamp);
burnPercentage = _burnPercentage;
}
/**
* @dev change whitelist status of a particular address
* @param _address address of the user to change status
* @param _status bool value for the status
*/
function whitelistAddress(address _address, bool _status) external onlyOwner {
isWhitelisted[_address] = _status;
}
/**
* @dev Returns the name of the token.
* @return The name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token.
* @return The symbol of the token.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used for token display.
* @return The number of decimals.
*/
function decimals() public view virtual override returns (uint8) {
return _decimals;
}
/**
* @dev Returns the total supply of the token.
* @return The total supply.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev Returns the balance of the specified account.
* @param account The address to check the balance for.
* @return The balance of the account.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev Transfers tokens from the caller to a specified recipient.
* @param recipient The address to transfer tokens to.
* @param amount The amount of tokens to transfer.
* @return A boolean value indicating whether the transfer was successful.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
uint256 burnTax = isWhitelisted[_msgSender()] || isWhitelisted[recipient] ? 0 : ((amount * burnPercentage) / 100);
if (burnTax > 0) _burn(_msgSender(), burnTax);
_transfer(_msgSender(), recipient, amount - burnTax);
return true;
}
/**
* @dev Returns the amount of tokens that the spender is allowed to spend on behalf of the owner.
* @param from The address that approves the spending.
* @param to The address that is allowed to spend.
* @return The remaining allowance for the spender.
*/
function allowance(address from, address to) public view virtual override returns (uint256) {
return _allowances[from][to];
}
/**
* @dev Approves the specified address to spend the specified amount of tokens on behalf of the caller.
* @param to The address to approve the spending for.
* @param amount The amount of tokens to approve.
* @return A boolean value indicating whether the approval was successful.
*/
function approve(address to, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), to, amount);
return true;
}
/**
* @dev Transfers tokens from one address to another.
* @param sender The address to transfer tokens from.
* @param recipient The address to transfer tokens to.
* @param amount The amount of tokens to transfer.
* @return A boolean value indicating whether the transfer was successful.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
uint256 burnTax = isWhitelisted[sender] || isWhitelisted[recipient] ? 0 : ((amount * burnPercentage) / 100);
if (burnTax > 0) _burn(sender, burnTax);
_transfer(sender, recipient, amount - burnTax);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, 'ERC20: transfer amount exceeds allowance');
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Increases the allowance of the specified address to spend tokens on behalf of the caller.
* @param to The address to increase the allowance for.
* @param addedValue The amount of tokens to increase the allowance by.
* @return A boolean value indicating whether the increase was successful.
*/
function increaseAllowance(address to, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), to, _allowances[_msgSender()][to] + addedValue);
return true;
}
/**
* @dev Decreases the allowance granted by the owner of the tokens to `to` account.
* @param to The account allowed to spend the tokens.
* @param subtractedValue The amount of tokens to decrease the allowance by.
* @return A boolean value indicating whether the operation succeeded.
*/
function decreaseAllowance(address to, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][to];
require(currentAllowance >= subtractedValue, 'ERC20: decreased allowance below zero');
unchecked {
_approve(_msgSender(), to, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Transfers `amount` tokens from `sender` to `recipient`.
* @param sender The account to transfer tokens from.
* @param recipient The account to transfer tokens to.
* @param amount The amount of tokens to transfer.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(amount > 0, 'ERC20: transfer amount zero');
require(sender != address(0), 'ERC20: transfer from the zero address');
require(recipient != address(0), 'ERC20: transfer to the zero address');
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, 'ERC20: transfer amount exceeds balance');
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
/**
* @dev Creates `amount` tokens and assigns them to `account`.
* @param account The account to assign the newly created tokens to.
* @param amount The amount of tokens to create.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), 'ERC20: mint to the zero address');
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the total supply.
* @param account The account to burn tokens from.
* @param amount The amount of tokens to burn.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), 'ERC20: burn from the zero address');
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, 'ERC20: burn amount exceeds balance');
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
/**
* @dev Destroys `amount` tokens from the caller's account, reducing the total supply.
* @param amount The amount of tokens to burn.
*/
function burn(uint256 amount) external {
_burn(_msgSender(), amount);
}
/**
* @dev Sets `amount` as the allowance of `to` over the caller's tokens.
* @param from The account granting the allowance.
* @param to The account allowed to spend the tokens.
* @param amount The amount of tokens to allow.
*/
function _approve(address from, address to, uint256 amount) internal virtual {
require(from != address(0), 'ERC20: approve from the zero address');
require(to != address(0), 'ERC20: approve to the zero address');
_allowances[from][to] = amount;
emit Approval(from, to, amount);
}
}
Read Contract
allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
burnPercentage 0xf01f20df → uint256
burnReserve 0xbf16257a → uint256
decimals 0x313ce567 → uint8
isWhitelisted 0x3af32abf → bool
liquidityReserve 0xb753bfe9 → uint256
name 0x06fdde03 → string
owner 0x8da5cb5b → address
presaleReserve 0x0c900e90 → uint256
stakingReserve 0xb61d43b1 → 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 to
uint256 amount
returns: bool
burn 0x42966c68
uint256 amount
decreaseAllowance 0xa457c2d7
address to
uint256 subtractedValue
returns: bool
decreaseBurnPercentage 0xfb5f2bf0
uint256 _burnPercentage
increaseAllowance 0x39509351
address to
uint256 addedValue
returns: bool
renounceOwnership 0x715018a6
No parameters
transfer 0xa9059cbb
address recipient
uint256 amount
returns: bool
transferFrom 0x23b872dd
address sender
address recipient
uint256 amount
returns: bool
transferOwnership 0xf2fde38b
address newOwner
whitelistAddress 0xb9a45aac
address _address
bool _status
Token Balances (2)
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