Add side deck (#223)

ordinals · Jun 27, 2022 · d511c2d · d511c2d
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diff --git a/deck/index.md b/deck/index.md
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+# Ordinals
+
+# Today's Agenda
+- Who am I?
+- What are ordinals?
+- What does that have to do with NFTs?
+
+---
+
+# Feel free to interrupt and ask questions!
+
+---
+
+# Who am I?
+- I'm just this guy, you know?
+- Bitcoin, Rust, and generative art programmer
+- Last big project was Agora, a server for selling downloads for Lightning
+  Network payments
+
+---
+
+# Why ordinals?
+- Wanted a simple protocol for assets on Bitcoin
+- Don't require any modification to the protocol
+- Aesthetically appealing, so particularly well-suited for art
+
+---
+
+# What are ordinals?
+
+---
+
+# Ordinals are just serial numbers for satoshis
+
+---
+
+# They start at 0, and go up to 1,906,077,499,999,999 (so far!)
+
+---
+
+# Are transferred with a simple first-in-first-out algorithm
+
+```
+[2] [1] [3] → [4] [2]
+```
+
+```
+[a b] [c] [d e f] → [? ? ? ?] [? ?]
+```
+
+```
+[a b] [c] [d e f] → [a b c d] [e f]
+```
+
+---
+
+# What about fees?
+
+```
+[2] [1] [3] → [4]
+```
+
+```
+[a b] [c] [d e f] → [a b c d]
+```
+
+```
+[SUBSIDY] [e f] → [SUBSIDY e f]
+```
+
+---
+
+# Specification
+
+```python
+# subsidy of block at given height
+def subsidy(height):
+  return 50 * 100_000_000 >> height // 210_000
+
+# first ordinal of subsidy of block at given height
+def first_ordinal(height):
+  start = 0
+  for height in range(height):
+    start += subsidy(height)
+  return start
+
+# assign ordinals in given block
+def assign_ordinals(block):
+  first = first_ordinal(block.height)
+  last = first + subsidy(block.height)
+  coinbase_ordinals = list(range(first, last))
+
+  for transaction in block.transactions[1:]:
+    ordinals = []
+    for input in transaction.inputs:
+      ordinals.extend(input.ordinals)
+
+    for output in transaction.outputs:
+      output.ordinals = ordinals[:output.value]
+      del ordinals[:output.value]
+
+    coinbase_ordinals.extend(ordinals)
+
+  for output in block.transaction[0].outputs:
+    output.ordinals = coinbase_ordinals[:output.value]
+    del coinbase_ordinals[:output.value]
+```
+
+---
+
+# What are ordinals good for?
+
+If you want a token, you can just pick and ordinal to represent your token, and
+use the location of the ordinal to represent ownership.
+
+The person who controls the private key that corresponds to the public key of
+the UTXO that contains the ordinal is the current owner of the token.
+
+---
+
+# What else are ordinals good for?
+
+- Aesthetics!
+- Supporting the fee market!
+
+---
+
+# Wacky aside: Ordinal traits
+
+- 😏 Rare ordinals
+- 🤤 Epic ordinals
+- 🥵 Legendary ordinals
+- Bounties: https://ordinals.com/bounties/
+
+---
+
+# Ordinal Index
+
+- [big](http://api.ordinals.com:8000/list/e11d223685e110c5df93d7ae57f63c535ac59d1d65c16de779f23a9166229c7e:0)
+- [small](http://api.ordinals.com:8000/list/81bb70199e0c2cf6a32ee0b8079085eb590c311f6e91bb51c14b85846593a76e:1)
+- [spent](http://api.ordinals.com:8000/list/b40375d8e4f50728c18ed292c2e40ed616797592a2f5587c9f72a23a55973f9e:0)
+
+---
+
+# What are ordinals not good for?
+
+- Not having to make weird multi-step transactions to avoid hitting the dust
+  limit
+- Being efficient with block space
+- Very high divisibility
+- Small databases
+
+---
+
+# Ordinal NFTs
+
+1. Hash: (ordinal || content hash || public key)
+2. Sign
+3. Append signature, data, and then bech32 encode
+4. Et voilà: `nft1qqz3psl8mvjm9t573n29l8q0phklcdhg65392pv0gpc79tydeujltn5g2h4fsg...`
+
+---
+
+# Ordinal NFTs
+
+- No on-chain transaction to mint
+- Store the NFT wherever
+- Anyone who has access to the NFT will know the secret, hidden meaning of the
+  ordinal.
+
+---
+
+# DISCLAIMER
+
+[thicccc transaction](https://mempool.space/tx/c3a7786e164bbc7620a90601a1f284cff1a5e93c59978f566a9c7104bc33975a)
diff --git a/docs/deck/index.html b/docs/deck/index.html
@@ -0,0 +1,184 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="google" content="notranslate" />
+    <title>Ordinals</title>
+    <script>
+      const SLIDES = 18;
+      let current = parseInt(window.location.hash.substring(1)) || 0;
+      window.location.hash = current;
+      document.addEventListener("keydown", function(event) {
+        let next = current;
+        switch (event.key) {
+          case " ":
+          case "ArrowDown":
+          case "ArrowRight":
+          case "Enter":
+            next += 1;
+            break;
+          case "ArrowLeft":
+          case "ArrowUp":
+            next -= 1;
+            break;
+          }
+
+        if (next < 0 || next + 1 > SLIDES) {
+          return;
+        }
+
+        window.location.hash = next;
+
+        current = next;
+      });
+    </script>
+    <style>
+      html {
+        background-color: black;
+        color: white;
+        font-size: 200%;
+      }
+
+      section {
+        background-color: black;
+        padding-left: 2em;
+        padding-right: 2em;
+        bottom: 0em;
+        left: 0em;
+        position: absolute;
+        right: 0em;
+        top: 0em;
+        z-index: 0;
+        overflow: hidden;
+      }
+
+      section:target {
+        z-index: 1;
+        overflow: auto;
+      }
+    </style>
+    <link rel="stylesheet" href="index.css">
+    <script src="index.js" defer></script>
+  </head>
+  <body>
+    <section id="0"><h1>Ordinals</h1>
+<h1>Today’s Agenda</h1>
+<ul>
+<li>Who am I?</li>
+<li>What are ordinals?</li>
+<li>What does that have to do with NFTs?</li>
+</ul></section>
+    <section id="1"><h1>Feel free to interrupt and ask questions!</h1></section>
+    <section id="2"><h1>Who am I?</h1>
+<ul>
+<li>I’m just this guy, you know?</li>
+<li>Bitcoin, Rust, and generative art programmer</li>
+<li>Last big project was Agora, a server for selling downloads for Lightning
+Network payments</li>
+</ul></section>
+    <section id="3"><h1>Why ordinals?</h1>
+<ul>
+<li>Wanted a simple protocol for assets on Bitcoin</li>
+<li>Don’t require any modification to the protocol</li>
+<li>Aesthetically appealing, so particularly well-suited for art</li>
+</ul></section>
+    <section id="4"><h1>What are ordinals?</h1></section>
+    <section id="5"><h1>Ordinals are just serial numbers for satoshis</h1></section>
+    <section id="6"><h1>They start at 0, and go up to 1,906,077,499,999,999 (so far!)</h1></section>
+    <section id="7"><h1>Are transferred with a simple first-in-first-out algorithm</h1>
+<pre><code>[2] [1] [3] → [4] [2]
+</code></pre>
+<pre><code>[a b] [c] [d e f] → [? ? ? ?] [? ?]
+</code></pre>
+<pre><code>[a b] [c] [d e f] → [a b c d] [e f]
+</code></pre></section>
+    <section id="8"><h1>What about fees?</h1>
+<pre><code>[2] [1] [3] → [4]
+</code></pre>
+<pre><code>[a b] [c] [d e f] → [a b c d]
+</code></pre>
+<pre><code>[SUBSIDY] [e f] → [SUBSIDY e f]
+</code></pre></section>
+    <section id="9"><h1>Specification</h1>
+<pre><code class="language-python"># subsidy of block at given height
+def subsidy(height):
+  return 50 * 100_000_000 &gt;&gt; height // 210_000
+
+# first ordinal of subsidy of block at given height
+def first_ordinal(height):
+  start = 0
+  for height in range(height):
+    start += subsidy(height)
+  return start
+
+# assign ordinals in given block
+def assign_ordinals(block):
+  first = first_ordinal(block.height)
+  last = first + subsidy(block.height)
+  coinbase_ordinals = list(range(first, last))
+
+  for transaction in block.transactions[1:]:
+    ordinals = []
+    for input in transaction.inputs:
+      ordinals.extend(input.ordinals)
+
+    for output in transaction.outputs:
+      output.ordinals = ordinals[:output.value]
+      del ordinals[:output.value]
+
+    coinbase_ordinals.extend(ordinals)
+
+  for output in block.transaction[0].outputs:
+    output.ordinals = coinbase_ordinals[:output.value]
+    del coinbase_ordinals[:output.value]
+</code></pre></section>
+    <section id="10"><h1>What are ordinals good for?</h1>
+<p>If you want a token, you can just pick and ordinal to represent your token, and
+use the location of the ordinal to represent ownership.</p>
+<p>The person who controls the private key that corresponds to the public key of
+the UTXO that contains the ordinal is the current owner of the token.</p></section>
+    <section id="11"><h1>What else are ordinals good for?</h1>
+<ul>
+<li>Aesthetics!</li>
+<li>Supporting the fee market!</li>
+</ul></section>
+    <section id="12"><h1>Wacky aside: Ordinal traits</h1>
+<ul>
+<li>😏 Rare ordinals</li>
+<li>🤤 Epic ordinals</li>
+<li>🥵 Legendary ordinals</li>
+<li>Bounties: https://ordinals.com/bounties/</li>
+</ul></section>
+    <section id="13"><h1>Ordinal Index</h1>
+<ul>
+<li><a href="http://api.ordinals.com:8000/list/e11d223685e110c5df93d7ae57f63c535ac59d1d65c16de779f23a9166229c7e:0">big</a></li>
+<li><a href="http://api.ordinals.com:8000/list/81bb70199e0c2cf6a32ee0b8079085eb590c311f6e91bb51c14b85846593a76e:1">small</a></li>
+<li><a href="http://api.ordinals.com:8000/list/b40375d8e4f50728c18ed292c2e40ed616797592a2f5587c9f72a23a55973f9e:0">spent</a></li>
+</ul></section>
+    <section id="14"><h1>What are ordinals not good for?</h1>
+<ul>
+<li>Not having to make weird multi-step transactions to avoid hitting the dust
+limit</li>
+<li>Being efficient with block space</li>
+<li>Very high divisibility</li>
+<li>Small databases</li>
+</ul></section>
+    <section id="15"><h1>Ordinal NFTs</h1>
+<ol>
+<li>Hash: (ordinal || content hash || public key)</li>
+<li>Sign</li>
+<li>Append signature, data, and then bech32 encode</li>
+<li>Et voilà: <code>nft1qqz3psl8mvjm9t573n29l8q0phklcdhg65392pv0gpc79tydeujltn5g2h4fsg...</code></li>
+</ol></section>
+    <section id="16"><h1>Ordinal NFTs</h1>
+<ul>
+<li>No on-chain transaction to mint</li>
+<li>Store the NFT wherever</li>
+<li>Anyone who has access to the NFT will know the secret, hidden meaning of the
+ordinal.</li>
+</ul></section>
+    <section id="17"><h1>DISCLAIMER</h1>
+<p><a href="https://mempool.space/tx/c3a7786e164bbc7620a90601a1f284cff1a5e93c59978f566a9c7104bc33975a">thicccc transaction</a></p></section>
+  </body>
+</html>
diff --git a/docs/index.html b/docs/index.html
@@ -19,6 +19,8 @@ <h1>THERE WILL ONLY EVER BE 2,099,999,997,690,000 ORDINALS</h1>
 
     <p>Check out the <a href="/bounties/">bounties</a> for a little ordinal treasure hunt.</p>
 
+    <p>A slide deck with mostly the same content as this page is available <a href="/deck/">here.</p>
+
     <h2>What are ordinals?</h2>
 
     Ordinals are numbers, like this: 804766073970493. Every satoshi, which is ¹⁄₁₀₀₀₀₀₀₀₀ of a bitcoin, has an ordinal, and every ordinal has a satoshi. When a satoshi changes hands, so does its ordinal. There are a lot of satoshis, and so there are a lot of ordinals. Two quadrillion ninety-nine trillion nine hundred ninety-nine billion nine hundred ninety-seven million six hundred ninety thousand, to be precise.

diff --git a/justfile b/justfile
@@ -36,6 +36,9 @@ status:
 serve:
   python3 -m http.server --directory docs
 
+deck:
+  slidedeck deck/index.md > docs/deck/index.html
+
 generate-private-key:
   cargo run generate-private-key