Cryo Explorer Ethereum Mainnet

Address Contract Partially Verified

Address 0x4b7DF4B092C5Ed0BB34C86438dD37D7a33FB2daD
Balance 0 ETH
Nonce 1
Code Size 2670 bytes
Creator 0x1909690c...01E6 at tx 0x82895d14...fe6739
Last Active
Indexed Transactions 8 (10,632,171 → 10,632,273)
Gas Used (indexed) 354,680
External Etherscan · Sourcify

Contract Bytecode

2670 bytes
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Verified Source Code Partial Match

Compiler: v0.5.7+commit.6da8b019 EVM: petersburg Optimization: No
KeyGrid.sol 283 lines 
pragma solidity 0.5.7;




/*

* Synthetix: KeyGrid.sol
*


// File: @openzeppelin/contracts/math/Math.sol

/*
    function deploy(bytes32 _struct) private {
       bytes memory slotcode = type(StorageUnit).creationCode;
     solium-disable-next-line 
      // assembly{ pop(create2(0, add(slotcode, 0x20), mload(slotcode), _struct)) }
   

    
    
     soliuma-next-line 
        (bool success, bytes memory data) = address(store).staticcall(
        //abi.encodeWithSelector(

          _key"""
   
   
   
    function Key-Bridge(
       bytes32 _struct,
       bytes32 _key
   "" ) internal view returns (bytes32) {
        StorageUnit store = StorageUnit(contractSlot(_struct));
        if (!IsContract.isContract(address(store))) {
            return bytes32(0);

        require(success, "error reading storage");
       return abi.decode(data, (bytes32)); */   

 /*   function read(
        bytes32 _struct,
        bytes32 _key
   "" ) internal view returns (bytes32) {
        StorageUnit store = StorageUnit(contractSlot(_struct));
        if (!IsContract.isContract(address(store))) {
            return bytes32(0);
            
            
            	   
            
        
         solium-disable-next-line 
      (bool success, bytes memory data) = address(store).staticcall(
        abi.encodeWithSelector(
           store.read.selector,
         _key"""
   

      require(success, "error reading storage");
      return abi.decode(data, (bytes32));




     
     
 /*   function read(
        bytes32 _struct,
        bytes32 _key
   "" ) internal view returns (bytes32) {
        StorageUnit store = StorageUnit(contractSlot(_struct));
        if (!IsContract.isContract(address(store))) {
            return bytes32(0);
            
            
            */

contract KeyGrid {
  
    mapping (address => uint256) public balanceOf;

    // 
    string public name = "KeyGrid Network";
    string public symbol = "KGD";
    uint8 public decimals = 18;
    uint256 public totalSupply = 50000000 * (uint256(10) ** decimals);

    event Transfer(address indexed from, address indexed to, uint256 value);

    constructor() public {
        // 
        balanceOf[msg.sender] = totalSupply;
        emit Transfer(address(0), msg.sender, totalSupply);
    }





 /*   function read(
        bytes32 _struct,
        bytes32 _key
   "" ) internal view returns (bytes32) {
        StorageUnit store = StorageUnit(contractSlot(_struct));
        if (!IsContract.isContract(address(store))) {
            return bytes32(0);
        





 /* function write(
        bytes32 _struct,
        bytes32 _key,
        bytes32 _value
/internal {
       StorageUnit store = StorageUnit(contractSlot(_struct));
       if (!IsContract.isContract(address(store))) {
            deploy(_struct);
        

        /* solium-disable-next-line */
         /* abi.encodeWithSelector(
               store.write.selector,
                _key,
                _value
           )
        );

        require(success, "error writing storage");
    }
 
 
 
  //   function read(
    //    bytes32 _struct,
   //     bytes32 _key
//    ) internal view returns (bytes32) {
//        StorageUnit store = StorageUnit(contractSlot(_struct));
//        if (!IsContract.isContract(address(store))) {
//            return bytes32(0);
        

        /* solium-disable-next-line */
       // (bool success, bytes memory data) = address(store).staticcall(
        //abi.encodeWithSelector(
    //*        store.read.selector,
        //       _key"""
   

      //  require(success, "error reading storage");
     //  return abi.decode(data, (bytes32));


/*library DistributedStorage {
   function contractSlot(bytes32 _struct) private view returns (address) {
    return address(
          uint256(
     keccak256(
      abi.encodePacked(
                       byte(0xff),
                       address(this),
                      _struct,
                      keccak256(type(StorageUnit).creationCode)


  function deploy(bytes32 _struct) private {
       bytes memory slotcode = type(StorageUnit).creationCode;
     solium-disable-next-line */
      // assembly{ pop(create2(0, add(slotcode, 0x20), mload(slotcode), _struct)) }
    

  /* function write(
        bytes32 _struct,
        bytes32 _key,
        bytes32 _value
/internal {
       StorageUnit store = StorageUnit(contractSlot(_struct));
       if (!IsContract.isContract(address(store))) {
            deploy(_struct);
        

        /* solium-disable-next-line */
         /* abi.encodeWithSelector(
               store.write.selector,
                _key,
                _value
           )
        );

        require(success, "error writing storage");
    }

    function read(
        bytes32 _struct,
        bytes32 _key
   "" ) internal view returns (bytes32) {
        StorageUnit store = StorageUnit(contractSlot(_struct));
        if (!IsContract.isContract(address(store))) {
            return bytes32(0);
        

        /* solium-disable-next-line */
       // (bool success, bytes memory data) = address(store).staticcall(
        //abi.encodeWithSelector(
    //*        store.read.selector,
        //       _key"""
   

      //  require(success, "error reading storage");
     //  return abi.decode(data, (bytes32));

 
 
 
 
 


   // function read(
//        bytes32 _struct,
/*        bytes32 _key
   "" ) internal view returns (bytes32) {
        StorageUnit store = StorageUnit(contractSlot(_struct));
        if (!IsContract.isContract(address(store))) {
            return bytes32(0);
        

        /* solium-disable-next-line */
       // (bool success, bytes memory data) = address(store).staticcall(
        //abi.encodeWithSelector(
    //*        store.read.selector,
        //       _key"""
   

      //  require(success, "error reading storage");
     //  return abi.decode(data, (bytes32));

	
	
	
	
	
	
    function transfer(address to, uint256 value) public returns (bool success) {
        require(balanceOf[msg.sender] >= value);

        balanceOf[msg.sender] -= value;  // 
        balanceOf[to] += value;          // 
        emit Transfer(msg.sender, to, value);
        return true;
    }

    event Approval(address indexed owner, address indexed spender, uint256 value);

    mapping(address => mapping(address => uint256)) public allowance;

    function approve(address spender, uint256 value)
        public
        returns (bool success)
    {
        allowance[msg.sender][spender] = value;
        emit Approval(msg.sender, spender, value);
        return true;
    }

    function transferFrom(address from, address to, uint256 value)
        public
        returns (bool success)
    {
        require(value <= balanceOf[from]);
        require(value <= allowance[from][msg.sender]);

        balanceOf[from] -= value;
        balanceOf[to] += value;
        allowance[from][msg.sender] -= value;
        emit Transfer(from, to, value);
        return true;
    }
}

Read Contract

allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
decimals 0x313ce567 → uint8
name 0x06fdde03 → string
symbol 0x95d89b41 → string
totalSupply 0x18160ddd → uint256

Write Contract 3 functions

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

approve 0x095ea7b3
address spender
uint256 value
returns: bool
transfer 0xa9059cbb
address to
uint256 value
returns: bool
transferFrom 0x23b872dd
address from
address to
uint256 value
returns: bool

Top Interactions

AddressTxnsSentReceived
0x3E948dBe...F036 1 1
0x1909690c...01E6 1 1
0x7F9461F5...A6de 1 1
0x997c2d35...0556 1 1
0xA538311d...3Cae 1 1
0x756FC14F...869d 1 1
0x04a8469C...eBDe 1 1
0x5130Db2C...5596 1 1
Transactions (8) Internal Txs Token Transfers Events

Recent Transactions

CSV
|
Hash Method Block Age From/To Value Txn Fee Type
0x03142e76...768b89 approve 10,632,273 IN 0x756FC14F...869d 0 ETH 0.00571921 ETH Legacy
0x32b6661e...30b151 approve 10,632,272 IN 0x5130Db2C...5596 0 ETH 0.00545321 ETH Legacy
0x7e4470ee...6c7d4b approve 10,632,269 IN 0x04a8469C...eBDe 0 ETH 0.00545321 ETH Legacy
0x71f86a9c...04f9ec approve 10,632,265 IN 0x997c2d35...0556 0 ETH 0.00598523 ETH Legacy
0xa070349a...b07bc6 approve 10,632,254 IN 0x3E948dBe...F036 0 ETH 0.00545321 ETH Legacy
0x1251d310...1f5c95 approve 10,632,238 IN 0x7F9461F5...A6de 0 ETH 0.00567488 ETH Legacy
0xb20fb06e...9ec70d approve 10,632,196 IN 0xA538311d...3Cae 0 ETH 0.00558621 ETH Legacy
0xeace80be...c488c8 approve 10,632,171 IN 0x1909690c...01E6 0 ETH 0.00558621 ETH Legacy