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<html lang="en"><head>
    <title>Ethereum Signature Database</title>
    <link rel="shortcut icon" href="/static/images/favicon.ico" type="image/x-icon">
    <link rel="icon" href="/static/images/favicon.ico" type="image/x-icon">
    <link rel="stylesheet" href="/static/css/project.css">
    <link rel="stylesheet" href="/static/css/bootstrap.min.css">
    <link rel="stylesheet" href="/static/css/bootstrap-theme.min.css">
  </head>
  <body>
    <nav class="navbar navbar-default">
      <div class="container-fluid">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
          <a class="navbar-brand" href="/">Ethereum Signature Database</a>
        </div><!-- /.navbar-header -->	
        <div>
					<ul class="nav navbar-nav">
						<li><a href="/signatures/">Function Signatures</a></li>
						<li><a href="/event-signatures/">Event Signatures</a></li>
						<li><a href="/submit/">Submit Signatures</a></li>
						<li><a href="/import-abi/">Submit ABI</a></li>
						<li><a href="/import-solidity/">Submit Solidity Source File</a></li>
					</ul>
        </div><!-- /.navbar-links -->
        <div class="pull-xs-right">
					<ul class="nav navbar-nav">
						<li><a href="/docs/">API Docs</a></li>
					</ul>
        </div><!-- /.navbar-right -->
      </div><!-- /.container-fluid -->
    </nav>
    
      <div class="container">
        <div class="row">
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          </div>
        </div>
      </div>
    
    
  <div class="container main-content">
    
  <div class="row">
    <div class="col-md-12">
      <div class="jumbotron">
        <h1 class="display-3">Welcome to the Ethereum Signature Database</h1>
        <p class="lead">Function calls in the Ethereum Virtual Machine are specified by the first four bytes of data sent with a transaction.  These 4-byte signatures are defined as the first four bytes of the Keccak hash (SHA3) of the canonical representation of the function signature. The database also contains mappings for event signatures. Unlike function signatures, they are defined as 32-bytes of the Keccak hash (SHA3) of the canonical form of the event signature. Since this is a one-way operation, it is not possible to derive the human-readable representation of the function or event from the bytes signature.  This database is meant to allow mapping those bytes signatures back to their human-readable versions.</p>
        <h2>There are 1,348,943 signatures in the database</h2>
        <hr class="m-y-2">
        <p class="lead">
          </p><form class="form-inline" action="/signatures/" method="get" novalidate="">
            <label for="bytes4_signature">Search Signatures</label>
            

  
    <div class="form-group ">
  
    <label class="sr-only">
      Bytes4 signature
    </label>
  

  <input name="bytes4_signature" class="form-control" type="text" placeholder="0x70a08231">
</div>

  


            <button type="submit" class="btn btn-default">Search</button>
          </form>
        <p></p>
      </div>
    </div>
  </div>
  <div class="row">
    <div class="col-md-12">
        <h2 class="display-3">TOS and Licensing</h2>
        <p>The data from this service is given free of any license or restrictions on how it may be used.</p>
        <p>Usage of the API is also granted with the single restriction that your usage should not disrupt the service itself.  If you wish to scrape this data, feel free, but please do so with limited concurrency.  You are encouraged to scrape your own copy of this data if your use case is likely to produce heavy load on the API.</p>
      </div>
    </div>
  </div>

  
  <div class="main-footer panel-footer text-right">
  <a class="footer-item" href="https://github.com/gobitfly/ethereum-function-signature-registry">Github Project Page</a>
  <a class="footer-item" href="https://github.com/gobitfly/ethereum-function-signature-registry/issues/new">File an issue</a>
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