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hallmark
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Hallmark — provenance for AI media</title>
<style>
  :root{
    --bg:#0d0e12; --panel:#15171d; --line:#24272f; --ink:#e8e9ed;
    --muted:#8d93a1; --accent:#e2523f; --ok:#3fb27f; --warn:#d9a441;
    --mono:ui-monospace,SFMono-Regular,Menlo,monospace;
  }
  *{box-sizing:border-box}
  body{margin:0;background:var(--bg);color:var(--ink);
       font:15px/1.55 ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
  header{border-bottom:1px solid var(--line);padding:22px 24px;display:flex;
         align-items:baseline;gap:14px;flex-wrap:wrap}
  h1{font-size:19px;margin:0;letter-spacing:-.01em}
  h1 span{color:var(--accent)}
  .sub{color:var(--muted);font-size:13px}
  .badge{margin-left:auto;font:12px var(--mono);color:var(--muted);
         border:1px solid var(--line);border-radius:999px;padding:3px 10px}
  nav{display:flex;gap:2px;padding:0 24px;border-bottom:1px solid var(--line)}
  nav button{background:none;border:0;border-bottom:2px solid transparent;color:var(--muted);
             padding:12px 16px;font-size:14px;cursor:pointer}
  nav button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--accent)}
  main{max-width:960px;margin:0 auto;padding:28px 24px 72px}
  .row{display:flex;gap:10px;flex-wrap:wrap}
  textarea,input[type=text]{width:100%;background:var(--panel);border:1px solid var(--line);
      border-radius:8px;color:var(--ink);padding:11px 13px;font:inherit;resize:vertical}
  textarea:focus,input:focus{outline:1px solid var(--accent);border-color:var(--accent)}
  button.go{background:var(--accent);border:0;border-radius:8px;color:#fff;
            padding:11px 20px;font-size:14px;font-weight:600;cursor:pointer}
  button.go[disabled]{opacity:.5;cursor:default}
  select{background:var(--panel);border:1px solid var(--line);border-radius:8px;
         color:var(--ink);padding:11px;font:inherit}
  .card{background:var(--panel);border:1px solid var(--line);border-radius:12px;
        padding:18px;margin-top:20px}
  .kv{display:grid;grid-template-columns:150px 1fr;gap:7px 16px;font:12.5px var(--mono);
      word-break:break-all;margin-top:14px}
  .kv dt{color:var(--muted)}
  .kv dd{margin:0}
  img.out{max-width:100%;border-radius:10px;display:block;border:1px solid var(--line)}
  .pill{display:inline-block;font:11px var(--mono);border-radius:999px;padding:3px 10px;
        text-transform:uppercase;letter-spacing:.06em}
  .pill.ok{background:rgba(63,178,127,.14);color:var(--ok)}
  .pill.warn{background:rgba(217,164,65,.14);color:var(--warn)}
  .pill.no{background:rgba(226,82,63,.14);color:var(--accent)}
  .muted{color:var(--muted)}
  .grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px;margin-top:20px}
  .grid figure{margin:0;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}
  .grid img{width:100%;display:block;aspect-ratio:1;object-fit:cover}
  .grid figcaption{padding:9px 11px;font-size:12px;color:var(--muted);
                   overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .drop{border:1.5px dashed var(--line);border-radius:12px;padding:38px;text-align:center;
        color:var(--muted);cursor:pointer}
  .drop.hot{border-color:var(--accent);color:var(--ink)}
  .err{border-color:var(--accent);color:#ffb4a8}
  .hide{display:none}
  .lede{color:var(--muted);max-width:64ch}
</style>
</head>
<body>
<header>
  <h1>Hall<span>mark</span></h1>
  <span class="sub">provenance-first AI media, on Genblaze&nbsp;+&nbsp;Backblaze&nbsp;B2</span>
  <span class="badge" id="health">checking…</span>
</header>

<nav>
  <button id="t-studio"  aria-selected="true"  onclick="tab('studio')">Studio</button>
  <button id="t-verify"  aria-selected="false" onclick="tab('verify')">Verify</button>
  <button id="t-library" aria-selected="false" onclick="tab('library')">Library</button>
</nav>

<main>
  <!-- ---------------- studio ---------------- -->
  <section id="studio">
    <p class="lede">Generate an image. Hallmark stores the bytes and a canonical,
      hash-verified provenance manifest in Backblaze&nbsp;B2, so the origin of the
      file stays checkable long after it leaves this page.</p>
    <div class="card">
      <textarea id="prompt" rows="3" placeholder="a lighthouse in fog at dawn, 35mm film"></textarea>
      <div class="row" style="margin-top:12px">
        <select id="model"><option value="flux">flux — quality</option><option value="turbo">turbo — fast</option></select>
        <select id="size">
          <option value="1024">1024 × 1024</option>
          <option value="768">768 × 768</option>
          <option value="1280">1280 × 1280</option>
        </select>
        <button class="go" id="mintBtn" onclick="mint()">Generate &amp; hallmark</button>
      </div>
    </div>
    <div id="mintOut"></div>
  </section>

  <!-- ---------------- verify ---------------- -->
  <section id="verify" class="hide">
    <p class="lede">Drop any image here. Hallmark hashes the bytes and looks that hash
      up in the B2 registry, and separately reads any manifest embedded in the file
      itself. The two answers are reported separately — a registry hit proves origin,
      an embedded manifest alone does not.</p>
    <div class="drop" id="drop" onclick="document.getElementById('file').click()">
      Drop a file, or click to choose
    </div>
    <input type="file" id="file" class="hide" accept="image/*" onchange="verifyFile(this.files[0])">
    <div id="verifyOut"></div>
  </section>

  <!-- ---------------- library ---------------- -->
  <section id="library" class="hide">
    <p class="lede">Everything this instance has minted, read back out of B2.</p>
    <div id="libOut" class="grid"></div>
  </section>
</main>

<script>
const $ = (id) => document.getElementById(id);
const esc = (s) => String(s ?? '').replace(/[&<>"]/g, c => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;'}[c]));
const short = (s, n = 20) => !s ? '—' : (s.length > n * 2 ? s.slice(0, n) + '…' + s.slice(-8) : s);

function tab(name){
  for (const t of ['studio','verify','library']) {
    $(t).classList.toggle('hide', t !== name);
    $('t-' + t).setAttribute('aria-selected', String(t === name));
  }
  if (name === 'library') loadLibrary();
}

async function health(){
  try{
    const h = await (await fetch('/api/health')).json();
    $('health').textContent = h.b2_configured
      ? `B2 ${esc(h.bucket)} · ${esc(h.region)}`
      : 'B2 not configured';
    $('health').style.color = h.b2_configured ? '' : 'var(--accent)';
  }catch{ $('health').textContent = 'offline'; }
}
health();

async function mint(){
  const prompt = $('prompt').value.trim();
  if (prompt.length < 3) return;
  const size = Number($('size').value);
  $('mintBtn').disabled = true;
  $('mintOut').innerHTML = '<div class="card muted">Generating, hashing, uploading to B2…</div>';
  try{
    const r = await fetch('/api/mint', {
      method:'POST', headers:{'Content-Type':'application/json'},
      body: JSON.stringify({prompt, model:$('model').value, width:size, height:size})
    });
    const d = await r.json();
    if(!r.ok) throw new Error(d.detail || ('HTTP ' + r.status));
    $('mintOut').innerHTML = `
      <div class="card">
        <img class="out" src="${esc(d.asset_url)}" alt="">
        <div style="margin-top:14px">
          <span class="pill ${d.verified?'ok':'warn'}">${d.verified?'manifest verified':'unverified'}</span>
        </div>
        <dl class="kv">
          <dt>prompt</dt><dd>${esc(d.prompt)}</dd>
          <dt>model</dt><dd>flux-open / ${esc(d.model)}</dd>
          <dt>asset sha-256</dt><dd>${esc(d.sha256)}</dd>
          <dt>manifest hash</dt><dd>${esc(d.canonical_hash)}</dd>
          <dt>manifest (B2)</dt><dd>${esc(d.manifest_uri || '—')}</dd>
          <dt>run id</dt><dd>${esc(d.run_id)}</dd>
        </dl>
      </div>`;
  }catch(e){
    $('mintOut').innerHTML = `<div class="card err">${esc(e.message)}</div>`;
  }finally{ $('mintBtn').disabled = false; }
}

const drop = $('drop');
['dragenter','dragover'].forEach(ev => drop.addEventListener(ev, e => {
  e.preventDefault(); drop.classList.add('hot');
}));
['dragleave','drop'].forEach(ev => drop.addEventListener(ev, e => {
  e.preventDefault(); drop.classList.remove('hot');
}));
drop.addEventListener('drop', e => { if (e.dataTransfer.files[0]) verifyFile(e.dataTransfer.files[0]); });

async function verifyFile(f){
  if(!f) return;
  $('verifyOut').innerHTML = '<div class="card muted">Hashing and checking the registry…</div>';
  const fd = new FormData(); fd.append('file', f);
  try{
    const r = await fetch('/api/verify', {method:'POST', body: fd});
    const d = await r.json();
    if(!r.ok) throw new Error(d.detail || ('HTTP ' + r.status));
    const verdict = {
      authentic:            ['ok',  'Authentic — minted by this pipeline'],
      embedded_manifest_only:['warn','Carries a manifest, but not in this registry'],
      unknown:              ['no',  'Unknown — no record of this file']
    }[d.verdict] || ['no','Unknown'];
    const rec = d.record || {};
    $('verifyOut').innerHTML = `
      <div class="card">
        <span class="pill ${verdict[0]}">${esc(verdict[1])}</span>
        <dl class="kv">
          <dt>file</dt><dd>${esc(d.filename)} · ${d.size_bytes.toLocaleString()} bytes</dd>
          <dt>sha-256</dt><dd>${esc(d.sha256)}</dd>
          <dt>registry hit</dt><dd>${d.registry_hit ? 'yes' : 'no'}</dd>
          <dt>embedded manifest</dt><dd>${d.embedded_manifest ? 'present' : 'none'}${
            d.embedded_hash_valid === null ? '' : ' · hash ' + (d.embedded_hash_valid ? 'valid' : 'INVALID')}</dd>
          ${rec.prompt ? `<dt>original prompt</dt><dd>${esc(rec.prompt)}</dd>` : ''}
          ${rec.model ? `<dt>model</dt><dd>flux-open / ${esc(rec.model)}</dd>` : ''}
          ${rec.created_at ? `<dt>minted</dt><dd>${new Date(rec.created_at*1000).toISOString()}</dd>` : ''}
        </dl>
      </div>`;
  }catch(e){
    $('verifyOut').innerHTML = `<div class="card err">${esc(e.message)}</div>`;
  }
}

async function loadLibrary(){
  $('libOut').innerHTML = '<div class="muted">Loading…</div>';
  try{
    const d = await (await fetch('/api/library')).json();
    if(!d.items || !d.items.length){ $('libOut').innerHTML = '<div class="muted">Nothing minted yet.</div>'; return; }
    $('libOut').innerHTML = d.items.map(i => `
      <figure>
        <img src="${esc(i.asset_url)}" alt="" loading="lazy">
        <figcaption title="${esc(i.prompt)}">${esc(i.prompt)}</figcaption>
      </figure>`).join('');
  }catch(e){
    $('libOut').innerHTML = `<div class="muted">${esc(e.message)}</div>`;
  }
}
</script>
</body>
</html>