Contract Overview
Balance: 0 Ether
Transactions: 4698951 txns
 Latest 25 transactions from a total of 4698951 transactions

TxHash Age From To Value [TxFee]
0x769bb001e719fd059bdd97a253a93863a670df92aca744183a92c0f586895d3514 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0xeb45881661cc728c9c72e53bc55b25c3a3df58f6578393f2294a1e8bd5f49efc14 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x358dbf90bf9508eff09e7f4b48ac1893018cf1485eb7ebf1f965fb5e198ae3f214 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x7fc33a7c54f07753fd144514bad9a8aa880d92c56cf486830010dc74cdbbc06814 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0xb13f073a8ed308d916e1f015dc7c84154ec13bf3df0c001f0bf28c23070a1d3614 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0xa383d648f11d2331d2b24d3bfbf33b0e15d55df2efdca2865bf619282d1a782614 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0xb92e5322e8475d5e03b9b877ae2f6befbf878e624d11182158ee71b0324cece914 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x8d51a54a859d5895973ea135584f4d25832aebba2574f6ed7f0188c0ab32d98514 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x3ac4ce3a99e50a33db2fb457c30c4cd4dcd6356c3a89b8a897f620f183245f3114 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x8065ce74587192f54951ce2028e55ab832e8aa0faa1ed3782d9ded3e860ac35914 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x96fa7d5527d84113758c3a098fa96976f00f62146b4fc5c12417f61b608b5b3514 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x3f9e3b95986a6920e7c3e87971d25f241b21c584fc9445219c63ee7ef625f99914 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x6e34f4ac13c54857bffc95bb7a3e2edb81248c79901eb774a4d3c3ada0e8098c14 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0xa0230ff79dd61b50241c47f5933b06a5f6f8defc54880aca2a825436039b6c9c14 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x2cfba0c403a97ac00b14f09e837d37eaeb95750535caf3a3841243c9778b12da14 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x2543e679f752d4972b9c1b602ce0526aeba386a5c820f5f00537f43a8dd5307114 days 17 hrs ago0xd1d1baa591933bca66f5e99be8843a0b7df9f334  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x1d3072ff8cf67966087e3420054155b9aa1f225f19182ac4154b280f12d5c34914 days 17 hrs ago0x15d91db93e18f3046016d94608682e26eb9c8656  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x579c60eea4b98f39da64240f0b77d39a5177d67aff7a1cce8eed51e0248811d414 days 17 hrs ago0x15d91db93e18f3046016d94608682e26eb9c8656  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x8978501ad53d3111fe3f35cbe869a8115fca9f95d9eff2bab741ec79b50cfec914 days 17 hrs ago0x15d91db93e18f3046016d94608682e26eb9c8656  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x9bd79dcd07388bf550e0ca7ab79799bc08cbf05f392a8faced38326e209d4c1914 days 17 hrs ago0x15d91db93e18f3046016d94608682e26eb9c8656  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x88468ca1d53f3d994e921c0eafe7399cd99b97ddf6be36db8b561c082718f94b14 days 17 hrs ago0x15d91db93e18f3046016d94608682e26eb9c8656  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0xa45b4c7b1095abb3b70955538fc215d5776025aa926e2434ddfefd9a75913bc814 days 17 hrs ago0x15d91db93e18f3046016d94608682e26eb9c8656  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x837b7014f932179422a60fb26503362c6d9297f540e46159becc17653bafad1f14 days 17 hrs ago0x15d91db93e18f3046016d94608682e26eb9c8656  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x5718fd882582f1fbc5013f64d9404658767f7ef85a8d2a16a4ef9c7431eb615a14 days 17 hrs ago0x15d91db93e18f3046016d94608682e26eb9c8656  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
0x58806cad8300b9eb71310414f5d3d09798e4cf1d7d054018819fab29e14b16b714 days 17 hrs ago0x15d91db93e18f3046016d94608682e26eb9c8656  IN   0xb11ea8d6bab4c557a781785425a2c5654f8826630 Ether0.000023562
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ParentTxHash Block Age From To Value
Contract Source Code Verified (Exact Match)
Contract Name: Blockhashes
Compiler Version: v0.4.25+commit.59dbf8f1
Optimization Enabled: No
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

pragma solidity ^0.4.25;

contract Blockhashes {
    
    mapping(uint => bytes32) public hashes;
    event Error(string msg);
    
    function add_recent (uint n) public {
        bytes32 h = blockhash(n);
        if (h == 0) {
            emit Error("blockhash fails");
        } else {
            hashes[n] = h;
        }
    }
    
    function add_old (uint n, bytes memory child_header) public {
        bytes32 child_hash = hashes[n+1];
        assert(child_hash == keccak256(child_header));
        bytes memory parent_hash = new bytes(32);
        for(uint i=0; i< 32; i++){
            parent_hash[i] = child_header[i+4];
        }
        bytes32 h;
        assembly {
            h := mload(add(parent_hash, 32))
        }
        hashes[n] = h;
    }
    
    function get_blockhash (uint n) public constant returns (bytes32) {
        return hashes[n];
    }
    
}

    Contract ABI  
[{"constant":false,"inputs":[{"name":"n","type":"uint256"},{"name":"child_header","type":"bytes"}],"name":"add_old","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"hashes","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"n","type":"uint256"}],"name":"get_blockhash","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"n","type":"uint256"}],"name":"add_recent","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"msg","type":"string"}],"name":"Error","type":"event"}]

  Contract Creation Code Switch To Opcodes View
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

   Swarm Source:
bzzr://6f60b72f308387bc08492caa7ab91da704d36290d75d1e66c14786facb324596

 

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