mirror of
https://github.com/bitcoin-s/bitcoin-s.git
synced 2025-03-26 21:42:48 +01:00
149 lines
No EOL
19 KiB
HTML
149 lines
No EOL
19 KiB
HTML
<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Blockchain Verification · bitcoin-s</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Bitcoin-S comes bundled with a rudimentary blockchain verification"/><meta name="docsearch:version" content="1.9.0"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Blockchain Verification · bitcoin-s"/><meta property="og:type" content="website"/><meta property="og:url" content="https://bitcoin-s.org/"/><meta property="og:description" content="Bitcoin-S comes bundled with a rudimentary blockchain verification"/><meta property="og:image" content="https://bitcoin-s.org/img/undraw_online.svg"/><meta name="twitter:card" content="summary"/><meta name="twitter:image" content="https://bitcoin-s.org/img/undraw_tweetstorm.svg"/><link rel="shortcut icon" href="/img/favicon.ico"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css"/><script>
|
||
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
|
||
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
|
||
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
|
||
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
|
||
|
||
ga('create', 'UA-61958686-2', 'auto');
|
||
ga('send', 'pageview');
|
||
</script><link rel="stylesheet" href="/css/code-block-buttons.css"/><script type="text/javascript" src="https://buttons.github.io/buttons.js"></script><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.0/clipboard.min.js"></script><script type="text/javascript" src="https://fonts.googleapis.com/css?family=Montserrat:500"></script><script type="text/javascript" src="https://www.googletagmanager.com/gtag/js?id=UA-61958686-2"></script><script type="text/javascript" src="/js/code-block-buttons.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head><body class="sideNavVisible separateOnPageNav"><div class="fixedHeaderContainer"><div class="headerWrapper wrapper"><header><a href="/"><img class="logo" src="/img/favicon.ico" alt="bitcoin-s"/><h2 class="headerTitleWithLogo">bitcoin-s</h2></a><a href="/versions"><h3>1.9.0</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class="siteNavGroupActive"><a href="/docs/core/core-intro" target="_self">Docs</a></li><li class=""><a href="/download" target="_self">Download</a></li><li class=""><a href="/api/org/bitcoins" target="_self">API</a></li><li class=""><a href="/help" target="_self">Help</a></li><li class="navSearchWrapper reactNavSearchWrapper"><input type="text" id="search_input_react" placeholder="Search" title="Search"/></li></ul></nav></div></header></div></div><div class="navPusher"><div class="docMainWrapper wrapper"><div class="docsNavContainer" id="docsNav"><nav class="toc"><div class="toggleNav"><section class="navWrapper wrapper"><div class="navBreadcrumb wrapper"><div class="navToggle" id="navToggler"><div class="hamburger-menu"><div class="line1"></div><div class="line2"></div><div class="line3"></div></div></div><h2><i>›</i><span>Chain</span></h2><div class="tocToggler" id="tocToggler"><i class="icon-toc"></i></div></div><div class="navGroups"><div class="navGroup"><h3 class="navGroupCategoryTitle">Getting Started</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/getting-started">Intro and Getting Started</a></li><li class="navListItem"><a class="navItem" href="/docs/bips">Supported BIPs</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Getting Setup</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/getting-setup">Getting Bitcoin-S installed on your machine</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Applications</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/applications/cli">CLI</a></li><li class="navListItem"><a class="navItem" href="/docs/applications/server">Application Server</a></li><li class="navListItem"><a class="navItem" href="/docs/applications/gui">GUI</a></li><li class="navListItem"><a class="navItem" href="/docs/applications/server-systemd">Systemd installation</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Chain</h3><ul class=""><li class="navListItem navListItemActive"><a class="navItem" href="/docs/chain/chain">Blockchain Verification</a></li><li class="navListItem"><a class="navItem" href="/docs/chain/filter-sync">Syncing Blockfilters</a></li><li class="navListItem"><a class="navItem" href="/docs/chain/chain-query-api">Chain Query API</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Configuration</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/config/configuration">Application Configuration</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Core Module</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/core/core-intro">Core Module</a></li><li class="navListItem"><a class="navItem" href="/docs/core/addresses">Generating Addresses</a></li><li class="navListItem"><a class="navItem" href="/docs/core/hd-keys">HD Key Generation</a></li><li class="navListItem"><a class="navItem" href="/docs/core/adding-spks">Adding New Script Types</a></li><li class="navListItem"><a class="navItem" href="/docs/core/spending-info">Signing Transactions</a></li><li class="navListItem"><a class="navItem" href="/docs/core/psbts">Partially Signed Bitcoin Transactions</a></li><li class="navListItem"><a class="navItem" href="/docs/core/dlc">Discreet Log Contract Data Structures</a></li><li class="navListItem"><a class="navItem" href="/docs/core/txbuilder">TxBuilder Example</a></li><li class="navListItem"><a class="navItem" href="/docs/core/lightning-network">Lightning Network Data Types</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Crypto Module</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/crypto/crypto-intro">Crypto Module</a></li><li class="navListItem"><a class="navItem" href="/docs/crypto/sign">Sign API</a></li><li class="navListItem"><a class="navItem" href="/docs/crypto/adaptor-signatures">Adaptor Signatures</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Fee Provider</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/fee-provider/fee-provider">Fee Provider</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Key Manager</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/key-manager/server-key-manager">Server Key Manager</a></li><li class="navListItem"><a class="navItem" href="/docs/key-manager/key-manager">Key Manager</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Node</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/node/node">Light Client</a></li><li class="navListItem"><a class="navItem" href="/docs/node/node-api">Node API</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Wallet</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/wallet/wallet">Wallet</a></li><li class="navListItem"><a class="navItem" href="/docs/wallet/wallet-callbacks">Wallet Callbacks</a></li><li class="navListItem"><a class="navItem" href="/docs/wallet/wallet-get-address">Wallet Get Address APIs</a></li><li class="navListItem"><a class="navItem" href="/docs/wallet/address-tagging">Address and UTXO tagging</a></li><li class="navListItem"><a class="navItem" href="/docs/wallet/dlc">Executing A DLC with Bitcoin-S</a></li><li class="navListItem"><a class="navItem" href="/docs/wallet/wallet-rescan">Wallet Rescans</a></li><li class="navListItem"><a class="navItem" href="/docs/wallet/wallet-sync">Wallet Sync</a></li><li class="navListItem"><a class="navItem" href="/docs/wallet/wallet-rpc">Wallet RPC Examples</a></li><li class="navListItem"><a class="navItem" href="/docs/wallet/backups">Wallet Backups</a></li><li class="navListItem"><a class="navItem" href="/docs/wallet/wallet-election-example">Wallet Election Example</a></li><li class="navListItem"><a class="navItem" href="/docs/wallet/wallet-price-example">Wallet Price Example</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Tor</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/tor/tor">Tor Setup</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">RPC Clients</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/rpc/rpc-clients-intro">Introduction</a></li><li class="navListItem"><a class="navItem" href="/docs/rpc/rpc-eclair">Eclair</a></li><li class="navListItem"><a class="navItem" href="/docs/rpc/rpc-bitcoind">bitcoind/Bitcoin Core</a></li><li class="navListItem"><a class="navItem" href="/docs/rpc/lnd-rpc">LND</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Secp256k1</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/secp256k1/secp256k1">Secp256k1</a></li><li class="navListItem"><a class="navItem" href="/docs/secp256k1/jni-modify">Adding to Secp256k1 JNI</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Testkit</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/testkit/testkit">Testkit</a></li><li class="navListItem"><a class="navItem" href="/docs/testkit/testkit-core">Testkit Core</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">DLC Oracle</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/oracle/build-oracle-server">Building the Oracle Server</a></li><li class="navListItem"><a class="navItem" href="/docs/oracle/oracle-server">Oracle Server</a></li><li class="navListItem"><a class="navItem" href="/docs/oracle/oracle-election-example">Election Example</a></li><li class="navListItem"><a class="navItem" href="/docs/oracle/oracle-price-example">Price Example</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Oracle Explorer Client</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/oracle-explorer-client/oracle-explorer-client">Oracle Explorer Client</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Contributing</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/contributing">Contributing</a></li><li class="navListItem"><a class="navItem" href="/docs/contributing-website">Contributing to the website</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Security</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/security">Security</a></li></ul></div></div></section></div><script>
|
||
var coll = document.getElementsByClassName('collapsible');
|
||
var checkActiveCategory = true;
|
||
for (var i = 0; i < coll.length; i++) {
|
||
var links = coll[i].nextElementSibling.getElementsByTagName('*');
|
||
if (checkActiveCategory){
|
||
for (var j = 0; j < links.length; j++) {
|
||
if (links[j].classList.contains('navListItemActive')){
|
||
coll[i].nextElementSibling.classList.toggle('hide');
|
||
coll[i].childNodes[1].classList.toggle('rotate');
|
||
checkActiveCategory = false;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
coll[i].addEventListener('click', function() {
|
||
var arrow = this.childNodes[1];
|
||
arrow.classList.toggle('rotate');
|
||
var content = this.nextElementSibling;
|
||
content.classList.toggle('hide');
|
||
});
|
||
}
|
||
|
||
document.addEventListener('DOMContentLoaded', function() {
|
||
createToggler('#navToggler', '#docsNav', 'docsSliderActive');
|
||
createToggler('#tocToggler', 'body', 'tocActive');
|
||
|
||
var headings = document.querySelector('.toc-headings');
|
||
headings && headings.addEventListener('click', function(event) {
|
||
var el = event.target;
|
||
while(el !== headings){
|
||
if (el.tagName === 'A') {
|
||
document.body.classList.remove('tocActive');
|
||
break;
|
||
} else{
|
||
el = el.parentNode;
|
||
}
|
||
}
|
||
}, false);
|
||
|
||
function createToggler(togglerSelector, targetSelector, className) {
|
||
var toggler = document.querySelector(togglerSelector);
|
||
var target = document.querySelector(targetSelector);
|
||
|
||
if (!toggler) {
|
||
return;
|
||
}
|
||
|
||
toggler.onclick = function(event) {
|
||
event.preventDefault();
|
||
|
||
target.classList.toggle(className);
|
||
};
|
||
}
|
||
});
|
||
</script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/bitcoin-s/bitcoin-s/blob/master/docs/chain/chain.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Blockchain Verification</h1></header><article><div><span><p>Bitcoin-S comes bundled with a rudimentary blockchain verification
|
||
module. This module is currently only released as a library, and not as a binary.
|
||
This is because it (nor the documentation) is not deemed production
|
||
ready. Use at your own risk, and without too much money depending on it.</p>
|
||
<h2><a class="anchor" aria-hidden="true" id="syncing-and-verifying-block-headers"></a><a href="#syncing-and-verifying-block-headers" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Syncing and verifying block headers</h2>
|
||
<p>Using the <code>chain</code> module of Bitcoin-S it's possible to
|
||
sync and verify block headers from the Bitcoin blockchain. In this document
|
||
we demonstrate how to do this, while persisting it to disk. We should be
|
||
able to read this chain on subsequent runs, assuming we are connected
|
||
to the same <code>bitcoind</code> instance.</p>
|
||
<pre><code class="hljs css language-scala">implicit val ec = ExecutionContext.global
|
||
implicit val system = ActorSystem("System")
|
||
// We are assuming that a `bitcoind` regtest node is running the background.
|
||
// You can see our `bitcoind` guides to see how to connect
|
||
// to a local or remote `bitcoind` node.
|
||
|
||
val bitcoindInstance = BitcoindInstanceLocal.fromDatadir()
|
||
val rpcCli = BitcoindRpcClient(bitcoindInstance)
|
||
|
||
// Next, we need to create a way to monitor the chain:
|
||
|
||
val getBestBlockHash = SyncUtil.getBestBlockHashFunc(rpcCli)
|
||
|
||
val getBlockHeader = SyncUtil.getBlockHeaderFunc(rpcCli)
|
||
|
||
// set a data directory
|
||
val datadir = Files.createTempDirectory("bitcoin-s-test")
|
||
|
||
// set the current network to regtest
|
||
import com.typesafe.config.ConfigFactory
|
||
val config = ConfigFactory.parseString {
|
||
"""
|
||
| bitcoin-s {
|
||
| network = regtest
|
||
| }
|
||
|""".stripMargin
|
||
}
|
||
|
||
implicit val chainConfig = ChainAppConfig(datadir, Vector(config))
|
||
|
||
// Initialize the needed database tables if they don't exist:
|
||
val chainProjectInitF = chainConfig.start()
|
||
val blockHeaderDAO = BlockHeaderDAO()
|
||
val compactFilterHeaderDAO = CompactFilterHeaderDAO()
|
||
val compactFilterDAO = CompactFilterDAO()
|
||
|
||
|
||
//initialize the chain handler from the database
|
||
val chainHandler = ChainHandler.fromDatabase(blockHeaderDAO, compactFilterHeaderDAO, compactFilterDAO)
|
||
|
||
// Now, do the actual syncing:
|
||
val syncedChainApiF = for {
|
||
_ <- chainProjectInitF
|
||
synced <- ChainSync.sync(chainHandler, getBlockHeader, getBestBlockHash)
|
||
} yield synced
|
||
|
||
val syncResultF = syncedChainApiF.flatMap { chainApi =>
|
||
chainApi.getBlockCount().map(count => println(s"chain api blockcount=${count}"))
|
||
|
||
rpcCli.getBlockCount.map(count => println(s"bitcoind blockcount=${count}"))
|
||
}
|
||
|
||
syncResultF.onComplete { case result =>
|
||
println(s"Sync result=${result}")
|
||
}
|
||
</code></pre>
|
||
</span></div></article></div><div class="docLastUpdate"><em>Last updated on 3/10/2020 by Chris Stewart</em></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/applications/server-systemd"><span class="arrow-prev">← </span><span>Systemd installation</span></a><a class="docs-next button" href="/docs/chain/filter-sync"><span>Syncing Blockfilters</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#syncing-and-verifying-block-headers">Syncing and verifying block headers</a></li></ul></nav></div><footer class="nav-footer" id="footer"><section class="sitemap"><a href="/" class="nav-home"><img src="/img/favicon.ico" alt="bitcoin-s" width="66" height="58"/></a><div><h5>Docs</h5><a href="/docs/en/getting-started">Getting Started</a><a href="/docs/en/core/core-intro">Guides</a><a href="/api/org/bitcoins">API Reference</a></div><div><h5>Community</h5><a href="/en/users.html">User Showcase</a><a href="https://join.slack.com/t/suredbits/shared_invite/zt-eavycu0x-WQL7XOakzQo8tAy7jHHZUw" target="_blank" rel="noreferrer noopener">Slack</a><a href="https://gitter.im/bitcoin-s-core/">Gitter chat</a></div><div><h5>More</h5><a href="https://github.com/bitcoin-s/bitcoin-s">GitHub</a><a class="github-button" href="https://github.com/bitcoin-s/bitcoin-s" data-icon="octicon-star" data-count-href="/bitcoin-s/bitcoin-s-core/stargazers" data-show-count="true" data-count-aria-label="# stargazers on GitHub" aria-label="Star this project on GitHub">Star</a></div></section><section class="copyright">Copyright © 2022 Suredbits & the bitcoin-s developers</section></footer></div><script type="text/javascript" src="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.js"></script><script>
|
||
document.addEventListener('keyup', function(e) {
|
||
if (e.target !== document.body) {
|
||
return;
|
||
}
|
||
// keyCode for '/' (slash)
|
||
if (e.keyCode === 191) {
|
||
const search = document.getElementById('search_input_react');
|
||
search && search.focus();
|
||
}
|
||
});
|
||
</script><script>
|
||
var search = docsearch({
|
||
|
||
apiKey: '0a510688bf8448e19aeb380377d328d3',
|
||
indexName: 'bitcoin-s',
|
||
inputSelector: '#search_input_react'
|
||
});
|
||
</script></body></html> |