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<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Oracle Server · bitcoin-s</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="The Oracle Server is a DLC Oracle with functionality for creating events and attesting to them."/><meta name="docsearch:version" content="next"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Oracle Server · bitcoin-s"/><meta property="og:type" content="website"/><meta property="og:url" content="https://bitcoin-s.org/"/><meta property="og:description" content="The Oracle Server is a DLC Oracle with functionality for creating events and attesting to them."/><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>
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</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/oracle/oracle-server.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Oracle Server</h1></header><article><div><span><p>The Oracle Server is a DLC Oracle with functionality for creating events and attesting to them.
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It also provides data to be able to set up your staking address.</p>
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<h3><a class="anchor" aria-hidden="true" id="building-the-oracle-server"></a><a href="#building-the-oracle-server" 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>Building the Oracle Server</h3>
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||
<p>You can build the oracle server with the <a href="https://github.com/sbt/sbt-native-packager">sbt native packager</a>.
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The native packager offers <a href="https://github.com/sbt/sbt-native-packager#examples">numerous ways to package the project</a>.</p>
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<p>In this example we are going to use <code>stage</code> which will produce bash scripts we can easily execute. You can stage the server with the following command.</p>
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<pre><code class="hljs css language-bash">sbt oracleServer/universal:stage
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</code></pre>
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<p>This will produce a script to execute bitcoin-s which you can start with</p>
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<pre><code class="hljs css language-bash">./app/oracle-server/target/universal/stage/bin/bitcoin<span class="hljs-_">-s</span>-oracle-server
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</code></pre>
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<h3><a class="anchor" aria-hidden="true" id="configuration"></a><a href="#configuration" 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>Configuration</h3>
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<p>If you would like to pass in a custom datadir for your server, you can do</p>
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<pre><code class="hljs css language-bash">./app/oracle-server/target/universal/stage/bin/bitcoin<span class="hljs-_">-s</span>-oracle-server --datadir /path/to/datadir/
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</code></pre>
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<p>To use a config file that is not the <code>bitcoin-s.conf</code> file in your datadir, you can do</p>
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<pre><code class="hljs css language-bash">./app/oracle-server/target/universal/stage/bin/bitcoin<span class="hljs-_">-s</span>-oracle-server --conf /path/to/file.conf
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</code></pre>
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<p>You can also pass in a custom <code>rpcport</code> to bind to</p>
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<pre><code class="hljs css language-bash">./app/oracle-server/target/universal/stage/bin/bitcoin<span class="hljs-_">-s</span>-oracle-server --rpcport 12345
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</code></pre>
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<p>For more information on configuring the server please see our <a href="/docs/next/config/configuration">configuration</a> document</p>
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<p>For more information on how to use our built in <code>cli</code> to interact with the server please see <a href="/docs/next/applications/cli">cli.md</a></p>
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<h3><a class="anchor" aria-hidden="true" id="server-endpoints"></a><a href="#server-endpoints" 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>Server Endpoints</h3>
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<ul>
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<li><code>getpublickey</code> - Get oracle's public key</li>
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<li><code>getstakingaddress</code> - Get oracle's staking address</li>
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<li><code>listevents</code> - Lists all event nonces</li>
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<li><code>createevent</code> <code>label</code> <code>maturationtime</code> <code>outcomes</code> - Registers an oracle event
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<ul>
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<li><code>label</code> - Label for this event</li>
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<li><code>maturationtime</code> - The earliest expected time an outcome will be signed, given in epoch second</li>
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<li><code>outcomes</code> - Possible outcomes for this event</li>
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</ul></li>
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<li><code>getevent</code> <code>nonce</code> - Get an event's details
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<ul>
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<li><code>nonce</code> - Nonce associated with the event</li>
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</ul></li>
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<li><code>signevent</code> <code>nonce</code> <code>outcome</code> - Signs an event
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<ul>
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<li><code>nonce</code> - Nonce associated with the event to sign</li>
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<li><code>outcome</code>- Outcome to sign for this event</li>
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</ul></li>
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<li><code>getsignature</code> <code>nonce</code> - Get the signature from a signed event
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<ul>
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<li><code>nonce</code> - Nonce associated with the signed event</li>
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</ul></li>
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</ul>
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<h4><a class="anchor" aria-hidden="true" id="create-event-example"></a><a href="#create-event-example" 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>Create Event Example</h4>
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<p>Bitcoin-S CLI:</p>
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<pre><code class="hljs css language-bash">$ bitcoin<span class="hljs-_">-s</span>-cli createevent testevent 1601917137 <span class="hljs-string">"outcome 1,outcome 2,outcome 3"</span>
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a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aa
|
||
|
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$ bitcoin<span class="hljs-_">-s</span>-cli getevent a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aa
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{
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<span class="hljs-string">"nonce"</span>: <span class="hljs-string">"a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aa"</span>,
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<span class="hljs-string">"eventName"</span>: <span class="hljs-string">"testevent"</span>,
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<span class="hljs-string">"numOutcomes"</span>: 3,
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<span class="hljs-string">"signingVersion"</span>: <span class="hljs-string">"Mock"</span>,
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<span class="hljs-string">"maturationTime"</span>: <span class="hljs-string">"2020-10-05T16:58:57Z"</span>,
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<span class="hljs-string">"announcementSignature"</span>: <span class="hljs-string">"1533265899006003fa79dc0d480061c3378bc634ec041efc97fc70827f3a1c9f30e05373f36c2e2dd9d2ad64d8aaee17fef724af2284b87724b949d48846920c"</span>,
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<span class="hljs-string">"attestation"</span>: <span class="hljs-string">""</span>,
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<span class="hljs-string">"signature"</span>: <span class="hljs-string">""</span>,
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<span class="hljs-string">"outcomes"</span>: [
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<span class="hljs-string">"outcome 1"</span>,
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<span class="hljs-string">"outcome 2"</span>,
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<span class="hljs-string">"outcome 3"</span>
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]
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}
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</code></pre>
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<p>CURL:</p>
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<pre><code class="hljs css language-bash">$ curl --data-binary <span class="hljs-string">'{"jsonrpc": "1.0", "id": "curltest", "method": "createevent", "params": ["testEvent", 1601917137, ["outcome 1", "outcome 2", "outcome 3"]]}'</span> -H <span class="hljs-string">"Content-Type: application/json"</span> http://127.0.0.1:9999/
|
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{<span class="hljs-string">"result"</span>:<span class="hljs-string">"28592661c78a3c2e0a568e92122e146022cb018b6b0ac888cdffc70a506e9ad2"</span>,<span class="hljs-string">"error"</span>:null}
|
||
|
||
$ curl --data-binary <span class="hljs-string">'{"jsonrpc": "1.0", "id": "curltest", "method": "getevent", "params": ["28592661c78a3c2e0a568e92122e146022cb018b6b0ac888cdffc70a506e9ad2"]}'</span> -H <span class="hljs-string">"Content-Type: application/json"</span> http://127.0.0.1:9999/
|
||
{<span class="hljs-string">"result"</span>:{<span class="hljs-string">"nonce"</span>:<span class="hljs-string">"28592661c78a3c2e0a568e92122e146022cb018b6b0ac888cdffc70a506e9ad2"</span>,<span class="hljs-string">"eventName"</span>:<span class="hljs-string">"testEvent"</span>,<span class="hljs-string">"numOutcomes"</span>:3,<span class="hljs-string">"signingVersion"</span>:<span class="hljs-string">"Mock"</span>,<span class="hljs-string">"maturationTime"</span>:<span class="hljs-string">"2020-10-05T16:58:57Z"</span>,<span class="hljs-string">"commitmentSignature"</span>:<span class="hljs-string">"a91499fa83ca607b06bb919284e002452d6c8f396295495586886b1f7e6d6f094c7d1504f35ee2210a036313569c1951aada6b3d52248f77c7e2c5836a970dd7"</span>,<span class="hljs-string">"attestation"</span>:<span class="hljs-string">""</span>,<span class="hljs-string">"signature"</span>:<span class="hljs-string">""</span>,<span class="hljs-string">"outcomes"</span>:[<span class="hljs-string">"outcome 1"</span>,<span class="hljs-string">"outcome 2"</span>,<span class="hljs-string">"outcome 3"</span>]},<span class="hljs-string">"error"</span>:null}
|
||
</code></pre>
|
||
<h4><a class="anchor" aria-hidden="true" id="sign-event-example"></a><a href="#sign-event-example" 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>Sign Event Example</h4>
|
||
<p>Bitcoin-S CLI:</p>
|
||
<pre><code class="hljs css language-bash">$ bitcoin<span class="hljs-_">-s</span>-cli signevent a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aa <span class="hljs-string">"outcome 1"</span>
|
||
a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aabddd069a3295eb8e02a8a89de4b50b063ffeb290e5d1c6ea3e4e21efb2ad208f
|
||
|
||
$ bitcoin<span class="hljs-_">-s</span>-cli getsignature a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aa
|
||
a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aabddd069a3295eb8e02a8a89de4b50b063ffeb290e5d1c6ea3e4e21efb2ad208f
|
||
</code></pre>
|
||
<p>CURL:</p>
|
||
<pre><code class="hljs css language-bash">$ curl --data-binary <span class="hljs-string">'{"jsonrpc": "1.0", "id": "curltest", "method": "signevent", "params": ["a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aa", "outcome 1"]}'</span> -H <span class="hljs-string">"Content-Type: application/json"</span> http://127.0.0.1:9999/
|
||
{<span class="hljs-string">"result"</span>:<span class="hljs-string">"a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aabddd069a3295eb8e02a8a89de4b50b063ffeb290e5d1c6ea3e4e21efb2ad208f"</span>,<span class="hljs-string">"error"</span>:null}
|
||
|
||
$ curl --data-binary <span class="hljs-string">'{"jsonrpc": "1.0", "id": "curltest", "method": "getsignature", "params": ["a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aa"]}'</span> -H <span class="hljs-string">"Content-Type: application/json"</span> http://127.0.0.1:9999/
|
||
{<span class="hljs-string">"result"</span>:<span class="hljs-string">"a777c9fdc42efbbbcb78e51a18ff98cdaafb809aeb082b8ebe95d57b1e21f1aabddd069a3295eb8e02a8a89de4b50b063ffeb290e5d1c6ea3e4e21efb2ad208f"</span>,<span class="hljs-string">"error"</span>:null}
|
||
</code></pre>
|
||
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