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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=1200px, shrink-to-fit=yes">
<meta name="description" content="Zcash 4.5.1-1 RPC Docs - getblockheader">
<meta name="author" content="">
<title>getblockheader - Zcash 4.5.1-1 RPC Docs</title>
<link href="./bootstrap.min.css" rel="stylesheet">
</head>
<style>
.card-body {
font-size:80%;
padding-top: 0.5em;
}
pre {
word-break: break-word;
white-space: pre-wrap;
}
</style>
<body>
<nav class="navbar navbar-dark bg-dark ">
<a class="navbar-brand" href="/">Zcash 4.5.1-1 RPC docs</a>
</nav>
<main role="main" class="container-fluid" style="margin-top: 1pc;">
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<div class="col-8 col-lg-9 col-xl-10">
<h1>getblockheader - Zcash 4.5.1-1 RPC</h1>
<pre>getblockheader "hash" ( verbose )
If verbose is false, returns a string that is serialized, hex-encoded data for blockheader 'hash'.
If verbose is true, returns an Object with information about blockheader <hash>.
Arguments:
1. "hash" (string, required) The block hash
2. verbose (boolean, optional, default=true) true for a json object, false for the hex encoded data
Result (for verbose = true):
{
"hash" : "hash", (string) the block hash (same as provided)
"confirmations" : n, (numeric) The number of confirmations, or -1 if the block is not on the main chain
"height" : n, (numeric) The block height or index
"version" : n, (numeric) The block version
"merkleroot" : "xxxx", (string) The merkle root
"finalsaplingroot" : "xxxx", (string) The root of the Sapling commitment tree after applying this block
"time" : ttt, (numeric) The block time in seconds since epoch (Jan 1 1970 GMT)
"nonce" : n, (numeric) The nonce
"bits" : "1d00ffff", (string) The bits
"difficulty" : x.xxx, (numeric) The difficulty
"previousblockhash" : "hash", (string) The hash of the previous block
"nextblockhash" : "hash" (string) The hash of the next block
}
Result (for verbose=false):
"data" (string) A string that is serialized, hex-encoded data for block 'hash'.
Examples:
> zcash-cli getblockheader "00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09"
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "getblockheader", "params": ["00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09"] }' -H 'content-type: text/plain;' http://127.0.0.1:8232/
</pre>
<hr>
<p>
Maintained by <a href="https://twitter.com/_garethtdavies">@_garethtdavies</a>; modified by: <a href="https://github.com/mdr0id">mdr0id</a>;license of the docs is MIT (see <a href="https://github.com/zcash/zcash">zcash repo</a>), license of the scripts and webpage is also MIT (<a href="https://github.com/zcash-rpc/zcash-rpc.github.io">github repo</a>)
</p>
<p>
Note it uses a mainnet zcash node
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