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<li class=""><a href="/core/atlas/howitworks.html">How Atlas Works</a></li>
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<li class=""><a href="/core/atlas/howtouse.html">How to Use the Atlas Network</a></li>
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<h5>Reference</h5>
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<ul class="uk-nav uk-nav-default doc-nav">
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<li class=""><a href="/common/javascript_ref.html">Blockstack Javascript Reference</a></li>
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<li class=""><a href="/common/core_ref.html">Blockstack CORE API</a></li>
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<li class=""><a href="/core/faq_technical.html">Blockstack Technical FAQ</a></li>
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</ul>
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</div>
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</div>
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<div class="uk-width-1-1 uk-width-expand@m">
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<article markdown="span" class="uk-article">
|
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<h1 class="uk-article-title">Choose a name</h1>
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<div class="uk-article-meta uk-margin-top uk-margin-medium-bottom">
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<!-- <img class="avatar avatar-small" alt="Blockstack" width="32" height="32" data-proofer-ignore="true" src="https://avatars2.githubusercontent.com/Blockstack?v=3&s=32" srcset="https://avatars2.githubusercontent.com/Blockstack?v=3&s=32 1x, https://avatars2.githubusercontent.com/Blockstack?v=3&s=64 2x, https://avatars2.githubusercontent.com/Blockstack?v=3&s=96 3x, https://avatars2.githubusercontent.com/Blockstack?v=3&s=128 4x" /> -->
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<!-- Written by <span itemprop="author" itemscope itemtype="http://schema.org/Person"><span itemprop="name">Blockstack</span></span><br> -->
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<time datetime="2018-09-14T16:11:42-07:00" itemprop="datePublished">
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<a "target="_blank" href="https://github.com/blockstack/blockstack-core/blob/master/docs/pickname.md" class="btn btn-default githubEditButton" role="button">
|
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<span data-uk-icon="icon: pencil; ratio: 1.2"></span> Edit this page on Github</a>
|
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<span style="font-family:Wingdings">w</span> Sep 14, 2018
|
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</time>
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</div>
|
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<div markdown="span" class="article-content">
|
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<p class="no_toc">This section explains how to choose and create a namespace, it contains the
|
|
following sections:</p>
|
|
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|
<ul id="markdown-toc">
|
|
<li><a href="#intended-uses-for-a-namespace" id="markdown-toc-intended-uses-for-a-namespace">Intended uses for a namespace</a></li>
|
|
<li><a href="#list-all-namespaces-in-existence-reference" id="markdown-toc-list-all-namespaces-in-existence-reference">List all namespaces in existence (reference).</a></li>
|
|
<li><a href="#list-all-names-within-a-namespace-reference" id="markdown-toc-list-all-names-within-a-namespace-reference">List all names within a namespace (reference)</a></li>
|
|
<li><a href="#get-the-cost-to-register-a-namespace-reference" id="markdown-toc-get-the-cost-to-register-a-namespace-reference">Get the Cost to Register a Namespace (reference)</a></li>
|
|
<li><a href="#getting-the-current-consensus-hash-reference" id="markdown-toc-getting-the-current-consensus-hash-reference">Getting the Current Consensus Hash (reference)</a></li>
|
|
<li><a href="#create-a-namespace" id="markdown-toc-create-a-namespace">Create a namespace</a></li>
|
|
</ul>
|
|
|
|
<h2 id="intended-uses-for-a-namespace">Intended uses for a namespace</h2>
|
|
|
|
<p>The intention is that each application can create its own BNS
|
|
namespace for its own purposes. Applications can use namespaces for things like:</p>
|
|
|
|
<ul>
|
|
<li>Giving users a SSO system, where each user registers their public key under a
|
|
username. Blockstack applications do this with names in the <code class="highlighter-rouge">.id</code> namespace,
|
|
for example.</li>
|
|
<li>Providing a subscription service, where each name is a 3rd party that provides
|
|
a service for users to subscribe to. For example, names in
|
|
<code class="highlighter-rouge">.podcast</code> point to podcasts that users of the
|
|
<a href="https://dotpodcast.co">DotPodcast</a> app can subscribe to.</li>
|
|
<li>Implementing software licenses, where each name corresponds to an access key.
|
|
Unlike conventional access keys, access keys implemented as names
|
|
can be sold and traded independently. The licensing fee (paid as a name
|
|
registration) would be set by the developer and sent to a developer-controlled
|
|
blockchain address.</li>
|
|
</ul>
|
|
|
|
<p>Names within a namespace can serve any purpose the developer wants. The ability
|
|
to collect registration fees for 1 year after creating the namespace not only
|
|
gives developers the incentive to get users to participate in the app, but also
|
|
gives them a way to measure economic activity.</p>
|
|
|
|
<p>Developers can query individual namespaces and look up names within them using
|
|
the BNS API.</p>
|
|
|
|
<h2 id="list-all-namespaces-in-existence-reference">List all namespaces in existence (<a href="https://core.blockstack.org/#namespace-operations-get-all-namespaces">reference</a>).</h2>
|
|
|
|
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>curl https://core.blockstack.org/v1/namespaces
|
|
<span class="o">[</span>
|
|
<span class="s2">"id"</span>,
|
|
<span class="s2">"helloworld"</span>,
|
|
<span class="s2">"podcast"</span>
|
|
<span class="o">]</span>
|
|
</code></pre>
|
|
</div>
|
|
|
|
<h2 id="list-all-names-within-a-namespace-reference">List all names within a namespace (<a href="https://core.blockstack.org/#namespace-operations-get-all-namespaces">reference</a>)</h2>
|
|
|
|
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>curl https://core.blockstack.org/v1/namespaces/id/names?page<span class="o">=</span>0
|
|
<span class="o">[</span>
|
|
<span class="s2">"0.id"</span>,
|
|
<span class="s2">"0000.id"</span>,
|
|
<span class="s2">"000000.id"</span>,
|
|
<span class="s2">"000001.id"</span>,
|
|
<span class="s2">"00000111111.id"</span>,
|
|
<span class="s2">"000002.id"</span>,
|
|
<span class="s2">"000007.id"</span>,
|
|
<span class="s2">"0011sro.id"</span>,
|
|
<span class="s2">"007_007.id"</span>,
|
|
<span class="s2">"00n3w5.id"</span>,
|
|
<span class="s2">"00r4zr.id"</span>,
|
|
<span class="s2">"00w1k1.id"</span>,
|
|
<span class="s2">"0101010.id"</span>,
|
|
<span class="s2">"01jack.id"</span>,
|
|
<span class="s2">"06nenglish.id"</span>,
|
|
<span class="s2">"08.id"</span>,
|
|
<span class="s2">"0cool_f.id"</span>,
|
|
<span class="s2">"0dadj1an.id"</span>,
|
|
<span class="s2">"0nelove.id"</span>,
|
|
<span class="s2">"0nename.id"</span>
|
|
...
|
|
<span class="o">]</span>
|
|
</code></pre>
|
|
</div>
|
|
|
|
<p>Each page returns a batch of 100 names.</p>
|
|
|
|
<h2 id="get-the-cost-to-register-a-namespace-reference">Get the Cost to Register a Namespace (<a href="https://core.blockstack.org/#price-checks-get-namespace-price">reference</a>)</h2>
|
|
|
|
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>curl https://core.blockstack.org/v1/prices/namespaces/test
|
|
<span class="o">{</span>
|
|
<span class="s2">"satoshis"</span>: 40000000
|
|
<span class="o">}</span>
|
|
</code></pre>
|
|
</div>
|
|
|
|
<p>If you want to register a namespace, please see the <a href="/core/naming/namespace.html">namespace creation section</a>.</p>
|
|
|
|
<h2 id="getting-the-current-consensus-hash-reference">Getting the Current Consensus Hash (<a href="https://core.blockstack.org/#blockchain-operations-get-consensus-hash">reference</a>)</h2>
|
|
|
|
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>curl -sL https://core.blockstack.org/v1/blockchains/bitcoin/consensus
|
|
<span class="o">{</span>
|
|
<span class="s2">"consensus_hash"</span>: <span class="s2">"98adf31989bd937576aa190cc9f5fa3a"</span>
|
|
<span class="o">}</span>
|
|
</code></pre>
|
|
</div>
|
|
|
|
<p>A recent consensus hash is required to create a <code class="highlighter-rouge">NAMESPACE_PREORDER</code> transaction. The reference
|
|
BNS clients do this automatically. See the <a href="/core/wire-format.html">transaction format</a>
|
|
document for details on how the consensus hash is used to construct the
|
|
transaction.</p>
|
|
|
|
<h2 id="create-a-namespace">Create a namespace</h2>
|
|
|
|
<p>There are four steps to creating a namespace:</p>
|
|
|
|
<ol>
|
|
<li>
|
|
<p><strong>Send a <code class="highlighter-rouge">NAMESPACE_PREORDER</code> transaction</strong> (<a href="https://www.blocktrail.com/BTC/tx/5f00b8e609821edd6f3369ee4ee86e03ea34b890e242236cdb66ef6c9c6a1b28">live example</a>).
|
|
This is the first step. This registers the <em>salted hash</em> of the namespace with BNS nodes, and burns the
|
|
requisite amount of cryptocurrency. In addition, it proves to the
|
|
BNS nodes that user has honored the BNS consensus rules by including
|
|
a recent <em>consensus hash</em> in the transaction
|
|
(see the section on <a href="#bns-forks">BNS forks</a> for details).</p>
|
|
</li>
|
|
<li>
|
|
<p><strong>Send a <code class="highlighter-rouge">NAMESPACE_REVEAL</code> transaction</strong> (<a href="https://www.blocktrail.com/BTC/tx/ab54b1c1dd5332dc86b24ca2f88b8ca0068485edf0c322416d104c5b84133a32">live example</a>).
|
|
This is the second step. This reveals the salt and the namespace ID (pairing it with its
|
|
<code class="highlighter-rouge">NAMESPACE_PREORDER</code>), it reveals how long names last in this namespace before
|
|
they expire or must be renewed, and it sets a <em>price function</em> for the namespace
|
|
that determines how cheap or expensive names its will be. The price function takes
|
|
a name in this namespace as input, and outputs the amount of cryptocurrency the
|
|
name will cost (i.e. by examining how long the name is, and whether or not it
|
|
has any vowels or non-alphabet characters). The namespace creator
|
|
has the option to collect name registration fees for the first year of the
|
|
namespace’s existence by setting a <em>namespace creator address</em>.</p>
|
|
</li>
|
|
<li>
|
|
<p><strong>Seed the namespace with <code class="highlighter-rouge">NAME_IMPORT</code> transactions</strong> (<a href="https://www.blocktrail.com/BTC/tx/c698ac4b4a61c90b2c93dababde867dea359f971e2efcf415c37c9a4d9c4f312">live example</a>).
|
|
Once the namespace has been revealed, the user has the option to populate it with a set of
|
|
names. Each imported name is given both an owner and some off-chain state.
|
|
This step is optional—namespace creators are not required to import names.</p>
|
|
</li>
|
|
<li>
|
|
<p><strong>Send a <code class="highlighter-rouge">NAMESPACE_READY</code> transaction</strong> (<a href="https://www.blocktrail.com/BTC/tx/2bf9a97e3081886f96c4def36d99a677059fafdbd6bdb6d626c0608a1e286032">live example</a>).
|
|
This is the final step of the process. It <em>launches</em> the namespace, which makes it available to the
|
|
public. Once a namespace is ready, anyone can register a name in it if they
|
|
pay the appropriate amount of cryptocurrency (according to the price funtion
|
|
revealed in step 2).</p>
|
|
</li>
|
|
</ol>
|
|
|
|
<p>The reason for the <code class="highlighter-rouge">NAMESPACE_PREORDER/NAMESPACE_REVEAL</code> pairing is to prevent
|
|
frontrunning. The BNS consensus rules require a <code class="highlighter-rouge">NAMESPACE_REVEAL</code> to be
|
|
paired with a previous <code class="highlighter-rouge">NAMESPACE_PREORDER</code> sent within the past 24 hours.
|
|
If it did not do this, then a malicious actor could watch the blockchain network
|
|
and race a victim to claim a namespace.</p>
|
|
|
|
<p>Namespaces are created on a first-come first-serve basis. If two people try to
|
|
create the same namespace, the one that successfully confirms both the
|
|
<code class="highlighter-rouge">NAMESPACE_PREORDER</code> and <code class="highlighter-rouge">NAMESPACE_REVEAL</code> wins. The fee burned in the
|
|
<code class="highlighter-rouge">NAMESPACE_PREORDER</code> is spent either way.</p>
|
|
|
|
<p>Once the user issues the <code class="highlighter-rouge">NAMESPACE_PREORDER</code> and <code class="highlighter-rouge">NAMESPACE_REVEAL</code>, they have
|
|
1 year before they must send the <code class="highlighter-rouge">NAMESPACE_READY</code> transaction. If they do not
|
|
do this, then the namespace they created disappears (along with all the names
|
|
they imported).</p>
|
|
|
|
<p>Developers wanting to create their own namespaces should read the <a href="/core/naming/namespace.html">namespace creation section</a> document. It is highly recommended that
|
|
developers request individual support before creating their own space, given the large amount of
|
|
cryptocurrency at stake.</p>
|
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noResultsText: 'Sorry, we have not found any matches for your query.', // the text to show when there are no results
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queryCorrectionText: 'Did you mean "#CORRECTION#"?',
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searchQueryParamName: 'ss360Query', // the name of the search query parameter
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linksOpenNewTab: false, // should clicking on the result links open a new tab/window?
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showSearchBoxLayover: true, //whether to show search box in search result layover
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moreResultsPagingSize: 12, // the number of new results to show each time the more results button is pressed (max: 24)
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orderByRelevanceText: "Relevance" // the text to be shown in order select box to describe 'order by relevance' option
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},
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suggestions: {
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show: true, // whether to show search suggestions
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maxQuerySuggestions: 3, // the maximum number of query suggestions
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querySuggestionHeadline: undefined, // the headline of the query suggestions, leave blank if no headline should be shown
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emptyQuerySuggestions: undefined,
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showImages: false, // show images in search suggestions
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num: 6, // the maximum number of search suggestions to be shown
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minChars: 3, // minimum number of characters before the suggestions shows, default: 3,
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maxWidth: 'auto', // the maximum width of the suggest box, default: as wide as the input box, at least 275px
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throttleTime: 300, // the number of milliseconds before the suggest is triggered after finished input, default: 300ms
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extraHtml: undefined, // extra HTML code that is shown in each search suggest, you can even show values of datapoints here,
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highlight: true, // whether matched words should be highlighted, default: true
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},
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smart404: { /* The caption of the search results. */
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caption: 'These links might be useful', /* The string in the title that identifies the page as a 404 page. */
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identifier: 'Page not found', /* A CSS selector that points to the area in which the alternative links should be shown. */
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resultSelector: '#ss360-404',
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}
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};
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</script>
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<script src="https://cdn.sitesearch360.com/sitesearch360-v11.min.js" async></script>
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</body>
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</html>
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