Contract Address Details

0x8d9fB713587174Ee97e91866050c383b5cEE6209

Token
VELHALLA.io (SCAR)
Creator
0x7ac0dd–d13fe6 at 0x3c1ccb–fcdd75
Implementation
0xe118774d4d0ec2e56520ac6f1820ca5f91ac2cef
Balance
50.715835188657189843 VLX ( )
Tokens
Fetching tokens...
Transactions
37,858 Transactions
Transfers
10 Transfers
Gas Used
2,592,129,279
Last Balance Update
54227896
Contract name:
TransparentUpgradeableProxy




Optimization enabled
true
Compiler version
v0.6.12+commit.27d51765




Optimization runs
200
EVM Version
default




Verified at
2021-12-15 17:35:44.868484Z

Constructor Arguments

360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc00000000000000000000000063bb6844aeb954cc123c6b7a3e6db57014d626fc000000000000000000000000b33de2ce262aab4ccd5bb06ec67977ebb7f732e9

Arg [0] (address) : 0x492db98dca3e2076cc3735a920a3ca505d382bbc
Arg [1] (address) : 0x63bb6844aeb954cc123c6b7a3e6db57014d626fc

              

Contract source code

pragma solidity ^0.6.12;
/**
* @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
* instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
* be specified by overriding the virtual {_implementation} function.
*
* Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
* different contract through the {_delegate} function.
*
* The success and return data of the delegated call will be returned back to the caller of the proxy.
*/
abstract contract Proxy {
/**
* @dev Delegates the current call to `implementation`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _delegate(address implementation) internal {
// solhint-disable-next-line no-inline-assembly
assembly {
// Copy msg.data. We take full control of memory in this inline assembly
// block because it will not return to Solidity code. We overwrite the
// Solidity scratch pad at memory position 0.
calldatacopy(0, 0, calldatasize())
// Call the implementation.
// out and outsize are 0 because we don't know the size yet.
let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
// Copy the returned data.
returndatacopy(0, 0, returndatasize())
switch result
// delegatecall returns 0 on error.
case 0 { revert(0, returndatasize()) }
default { return(0, returndatasize()) }
}
}
/**
* @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
* and {_fallback} should delegate.
*/
function _implementation() internal virtual view returns (address);
/**
* @dev Delegates the current call to the address returned by `_implementation()`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _fallback() internal {
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
* function in the contract matches the call data.
*/
fallback () payable external {
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
* is empty.
*/
receive () payable external {
_delegate(_implementation());
}
}
/**
* @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
* implementation address that can be changed. This address is stored in storage in the location specified by
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
* implementation behind the proxy.
*
* Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
* {TransparentUpgradeableProxy}.
*/
contract UpgradeableProxy is Proxy {
/**
* @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
*
* If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
* function call, and allows initializating the storage of the proxy like a Solidity constructor.
*/
constructor() public payable {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
}
/**
* @dev Emitted when the implementation is upgraded.
*/
event Upgraded(address indexed implementation);
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Returns the current implementation address.
*/
function _implementation() internal override view returns (address impl) {
bytes32 slot = _IMPLEMENTATION_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
impl := sload(slot)
}
}
/**
* @dev Upgrades the proxy to a new implementation.
*
* Emits an {Upgraded} event.
*/
function _upgradeTo(address newImplementation) virtual internal {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Stores a new address in the EIP1967 implementation slot.
*/
function _setImplementation(address newImplementation) private {
address implementation = _implementation();
require(implementation != newImplementation, "Proxy: Attemps update proxy with the same implementation");
bytes32 slot = _IMPLEMENTATION_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, newImplementation)
}
}
}
/**
* @dev This contract implements a proxy that is upgradeable by an admin.
*
* To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
* clashing], which can potentially be used in an attack, this contract uses the
* https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
* things that go hand in hand:
*
* 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
* that call matches one of the admin functions exposed by the proxy itself.
* 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
* implementation. If the admin tries to call a function on the implementation it will fail with an error that says
* "admin cannot fallback to proxy target".
*
* These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
* the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
* to sudden errors when trying to call a function from the proxy implementation.
*
* Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
* you should think of the `ProxyAdmin` instance as the real administrative inerface of your proxy.
*/
contract TransparentUpgradeableProxy is UpgradeableProxy {
/**
* @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
* optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
*/
constructor(address admin, address implementation) public payable UpgradeableProxy() {
require(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1), "Wrong admin slot");
_setAdmin(admin);
_upgradeTo(implementation);
}
/**
* @dev Emitted when the admin account has changed.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Storage slot with the admin of the contract.
* This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
*/
modifier ifAdmin() {
if (msg.sender == _admin()) {
_;
} else {
_fallback();
}
}
/**
* @dev Returns the current admin.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
*/
function admin() external ifAdmin returns (address) {
return _admin();
}
/**
* @dev Returns the current implementation.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
*/
function implementation() external ifAdmin returns (address) {
return _implementation();
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
*/
function changeAdmin(address newAdmin) external ifAdmin {
require(newAdmin != _admin(), "Proxy: new admin is the same admin.");
emit AdminChanged(_admin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @dev Upgrade the implementation of the proxy.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
*/
function upgradeTo(address newImplementation) external ifAdmin {
_upgradeTo(newImplementation);
}
/**
* @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
* by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
* proxied contract.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
_upgradeTo(newImplementation);
// solhint-disable-next-line avoid-low-level-calls
(bool success,) = newImplementation.delegatecall(data);
require(success);
}
/**
* @dev Returns the current admin.
*/
function _admin() internal view returns (address adm) {
bytes32 slot = _ADMIN_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
adm := sload(slot)
}
}
/**
* @dev Stores a new address in the EIP1967 admin slot.
*/
function _setAdmin(address newAdmin) private {
bytes32 slot = _ADMIN_SLOT;
require(newAdmin != address(0), "Proxy: Can't set admin to zero address.");
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, newAdmin)
}
}
}

Contract ABI

[{"type":"constructor","stateMutability":"payable","inputs":[{"type":"address","name":"admin","internalType":"address"},{"type":"address","name":"implementation","internalType":"address"}]},{"type":"event","name":"AdminChanged","inputs":[{"type":"address","name":"previousAdmin","internalType":"address","indexed":false},{"type":"address","name":"newAdmin","internalType":"address","indexed":false}],"anonymous":false},{"type":"event","name":"Upgraded","inputs":[{"type":"address","name":"implementation","internalType":"address","indexed":true}],"anonymous":false},{"type":"fallback","stateMutability":"payable"},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"admin","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"changeAdmin","inputs":[{"type":"address","name":"newAdmin","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"implementation","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"upgradeTo","inputs":[{"type":"address","name":"newImplementation","internalType":"address"}]},{"type":"function","stateMutability":"payable","outputs":[],"name":"upgradeToAndCall","inputs":[{"type":"address","name":"newImplementation","internalType":"address"},{"type":"bytes","name":"data","internalType":"bytes"}]},{"type":"receive","stateMutability":"payable"}]
            

Deployed ByteCode

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