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<h5>Reference</h5>
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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">Creating a Namespace</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="2018-09-14T15:04:57-07:00" itemprop="datePublished">
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<a "target="_blank" href="https://github.com/blockstack/blockstack-core/blob/master/docs/creationhowto.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>There are four steps to creating a namespace:</p>
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<ol>
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<li>
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<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>).
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This is the first step. This registers the <em>salted hash</em> of the namespace with BNS nodes, and burns the
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requisite amount of cryptocurrency. In addition, it proves to the
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BNS nodes that user has honored the BNS consensus rules by including
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a recent <em>consensus hash</em> in the transaction
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(see the section on <a href="#bns-forks">BNS forks</a> for details).</p>
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</li>
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<li>
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<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>).
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This is the second step. This reveals the salt and the namespace ID (pairing it with its
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<code class="highlighter-rouge">NAMESPACE_PREORDER</code>), it reveals how long names last in this namespace before
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they expire or must be renewed, and it sets a <em>price function</em> for the namespace
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that determines how cheap or expensive names its will be. The price function takes
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a name in this namespace as input, and outputs the amount of cryptocurrency the
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name will cost (i.e. by examining how long the name is, and whether or not it
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has any vowels or non-alphabet characters). The namespace creator
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has the option to collect name registration fees for the first year of the
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namespace’s existence by setting a <em>namespace creator address</em>.</p>
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</li>
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<li>
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<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>).
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Once the namespace has been revealed, the user has the option to populate it with a set of
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names. Each imported name is given both an owner and some off-chain state.
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This step is optional—namespace creators are not required to import names.</p>
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</li>
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<li>
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<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>).
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This is the final step of the process. It <em>launches</em> the namespace, which makes it available to the
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public. Once a namespace is ready, anyone can register a name in it if they
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pay the appropriate amount of cryptocurrency (according to the price funtion
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revealed in step 2).</p>
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</li>
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</ol>
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<p>The reason for the <code class="highlighter-rouge">NAMESPACE_PREORDER/NAMESPACE_REVEAL</code> pairing is to prevent
|
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frontrunning. The BNS consensus rules require a <code class="highlighter-rouge">NAMESPACE_REVEAL</code> to be
|
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paired with a previous <code class="highlighter-rouge">NAMESPACE_PREORDER</code> sent within the past 24 hours.
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If it did not do this, then a malicious actor could watch the blockchain network
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and race a victim to claim a namespace.</p>
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<p>Namespaces are created on a first-come first-serve basis. If two people try to
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create the same namespace, the one that successfully confirms both the
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<code class="highlighter-rouge">NAMESPACE_PREORDER</code> and <code class="highlighter-rouge">NAMESPACE_REVEAL</code> wins. The fee burned in the
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<code class="highlighter-rouge">NAMESPACE_PREORDER</code> is spent either way.</p>
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<p>Once the user issues the <code class="highlighter-rouge">NAMESPACE_PREORDER</code> and <code class="highlighter-rouge">NAMESPACE_REVEAL</code>, they have
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1 year before they must send the <code class="highlighter-rouge">NAMESPACE_READY</code> transaction. If they do not
|
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do this, then the namespace they created disappears (along with all the names
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they imported).</p>
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<p>Developers wanting to create their own namespaces should read the <a href="/core/naming/namepsaces.html">namespace
|
|
creation</a> document. It is highly recommended that
|
|
developers individula support to create your own namespace, given the large amount of
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cryptocurrency at stake.</p>
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