defi-visualized/seed-phrase-entropy.html at main · expectfun/defi-visualized · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Seed Phrase Entropy - DeFi Visualized</title>
  <style>
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      text-align: center;
      color: #00d9ff;
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      margin-bottom: 30px;
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      margin-right: auto;
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      display: grid;
      grid-template-columns: repeat(4, 1fr);
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        grid-template-columns: repeat(3, 1fr);
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      background: rgba(0, 0, 0, 0.3);
      border-radius: 8px;
      padding: 12px 8px;
      text-align: center;
      position: relative;
      overflow: hidden;
      height: 70px;
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      box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
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      font-size: 10px;
      color: #666;
      position: absolute;
      top: 4px;
      left: 8px;
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    .slot-word {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      height: 24px;
      overflow: hidden;
    }
    .slot.spinning .slot-word {
      animation: spin 0.1s linear infinite;
    }
    @keyframes spin {
      0% { transform: translateY(-100%); opacity: 0; }
      50% { transform: translateY(0); opacity: 1; }
      100% { transform: translateY(100%); opacity: 0; }
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    .slot-choices {
      font-size: 11px;
      color: #888;
      margin-top: 4px;
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    .slot.checksum {
      border-color: #ff9f43;
    }
    .slot.checksum .slot-number {
      color: #ff9f43;
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    .slot.checksum.filled {
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      margin-bottom: 12px;
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    .comparisons {
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  </style>
</head>
<body>
  <div class="container">
    <a href="index.html" style="color: #00d9ff; text-decoration: none; font-size: 18px; display: inline-block; margin-bottom: 8px;" title="Home">
      🏠
    </a>
    <h1>Seed Phrase Entropy</h1>
    <p class="subtitle" id="subtitle">Why nobody can guess your seed phrase — the numbers are astronomical</p>

    <div class="card">
      <div class="word-toggle">
        <button id="btn12" class="active" onclick="setWordCount(12)">12 Words</button>
        <button id="btn24" onclick="setWordCount(24)">24 Words</button>
      </div>
      <div class="section-title" id="sectionTitle">BIP39 Seed Phrase (11 words + checksum)</div>
      <div class="slots-container" id="slots"></div>
      <div class="controls">
        <button class="btn-primary" id="spinBtn" onclick="spinNext()">Pick Word #1</button>
        <button class="btn-secondary" id="skipBtn" onclick="skipToEnd()">Skip to End</button>
        <button class="btn-secondary" onclick="reset()">Reset</button>
      </div>
    </div>

    <div class="card">
      <div class="total-section">
        <div class="total-label">Total Possible Combinations</div>
        <div class="formula" id="formula">2048 choices per word (128 for checksum)</div>
        <div class="total-value" id="totalValue">1</div>
        <div class="total-scientific" id="totalScientific"></div>
      </div>
    </div>

    <div class="card">
      <div class="section-title">How Big Is This Number?</div>
      <div class="scale-note">Progress bars use a logarithmic scale to visualize exponential growth</div>
      <div class="comparisons" id="comparisons"></div>
    </div>

    <div class="card">
      <div class="time-section">
        <div class="time-label">Time to try all combinations at 1 trillion guesses/second</div>
        <div class="time-value" id="timeValue">0 seconds</div>
        <div class="time-note" id="timeNote">Easily crackable — keep adding words!</div>
      </div>
    </div>

    <div class="card disclaimer">
      <div class="disclaimer-title">ℹ️ Simplifications</div>
      <p style="margin: 0 0 12px 0;">This is an educational visualization, not a technical specification. Some details are simplified:</p>
      <ul>
        <li><strong>Word selection:</strong> Real BIP39 generates random entropy bits first, then encodes them as words — not picked one-by-one like a slot machine.</li>
        <li><strong>Brute force time:</strong> Doesn't account for current limitations (key derivation) nor future quantum breakthroughs — real attacks are much slower today, but quantum computing is a factor to prepare for.</li>
        <li><strong>Passphrase:</strong> BIP39 supports an optional passphrase ("25th word") for additional security, not shown here.</li>
        <li><strong>Blockchain variations:</strong> Different blockchains may have different implementations — some don't use a checksum word, others use different word lists or derivation paths.</li>
      </ul>
    </div>
  </div>

  <script>
    const BIP39_WORDS = 2048;
    let totalWords = 12;
    // Checksum choices: 12 words = 128 (7 bits free), 24 words = 8 (3 bits free)
    const CHECKSUM_MAP = { 12: 128, 24: 8 };
    const ENTROPY_BITS = { 12: 128, 24: 256 };

    // Sample BIP39 words for animation (distributed across alphabet)
    const sampleWords = [
      'abandon', 'apple', 'arena', 'bachelor', 'banana', 'blade', 'bright', 'bronze',
      'camera', 'carbon', 'castle', 'chair', 'cherry', 'cloud', 'cobra', 'cruise',
      'damage', 'dawn', 'desert', 'diamond', 'dolphin', 'dragon', 'dream', 'drift',
      'eagle', 'earth', 'elder', 'electric', 'element', 'embark', 'energy', 'engine',
      'fabric', 'falcon', 'family', 'fashion', 'film', 'flame', 'flower', 'forest',
      'galaxy', 'garage', 'garden', 'genius', 'ghost', 'ginger', 'globe', 'gravity',
      'hammer', 'harbor', 'harvest', 'helmet', 'hidden', 'hockey', 'horizon', 'hybrid',
      'impact', 'import', 'infant', 'initial', 'insect', 'iron', 'island', 'ivory',
      'jacket', 'jaguar', 'jazz', 'jelly', 'jewel', 'journey', 'jungle', 'junior',
      'kangaroo', 'kernel', 'kingdom', 'kitchen', 'kiwi', 'knife', 'knight', 'koala',
      'label', 'ladder', 'lamp', 'laptop', 'lemon', 'leopard', 'liberty', 'lunar',
      'machine', 'magnet', 'mammal', 'mango', 'marble', 'meadow', 'monkey', 'mountain',
      'napkin', 'narrow', 'nature', 'neck', 'neutral', 'night', 'noble', 'north',
      'oasis', 'object', 'ocean', 'olive', 'onion', 'opera', 'orange', 'orbit',
      'paddle', 'palace', 'panda', 'paper', 'peace', 'piano', 'pilot', 'planet',
      'quantum', 'queen', 'question', 'quick', 'quiz', 'quote', 'rabbit', 'radar',
      'saddle', 'salmon', 'saturn', 'scout', 'shadow', 'silver', 'solar', 'spirit',
      'table', 'talent', 'taxi', 'temple', 'tiger', 'timber', 'tornado', 'trophy',
      'umbrella', 'uncle', 'uniform', 'unique', 'universe', 'upgrade', 'urban', 'useful',
      'vacuum', 'valley', 'vanilla', 'vapor', 'velvet', 'village', 'vintage', 'violin',
      'waffle', 'wallet', 'warrior', 'wealth', 'whale', 'winter', 'wisdom', 'wolf',
      'yellow', 'yoga', 'young', 'zebra', 'zero', 'zone', 'abandon', 'zoo'
    ];

    const comparisons = [
      { icon: '🏖️', name: 'Grains of sand on Earth', value: 7.5e18, exp: '7.5 × 10¹⁸' },
      { icon: '💧', name: 'Drops of water in all oceans', value: 2e25, exp: '2 × 10²⁵' },
      { icon: '⭐', name: 'Stars in observable universe', value: 1e24, exp: '10²⁴' },
      { icon: '🌍', name: 'Atoms on planet Earth', value: 1e50, exp: '10⁵⁰' },
      { icon: '🌌', name: 'Atoms in observable universe', value: 1e80, exp: '10⁸⁰' },
    ];

    let currentWord = 0;
    let isSpinning = false;
    let spinInterval = null;
    let totalCombinations = 1n;

    function init() {
      const slotsContainer = document.getElementById('slots');
      slotsContainer.innerHTML = '';

      for (let i = 0; i < totalWords; i++) {
        const slot = document.createElement('div');
        const isChecksum = i === totalWords - 1;
        slot.className = 'slot empty' + (isChecksum ? ' checksum' : '');
        slot.id = `slot-${i}`;
        slot.innerHTML = `
          <div class="slot-number">${isChecksum ? 'checksum' : '#' + (i + 1)}</div>
          <div class="slot-word">—</div>
          <div class="slot-choices"></div>
        `;
        slotsContainer.appendChild(slot);
      }

      // Update section title
      document.getElementById('sectionTitle').textContent =
        `BIP39 Seed Phrase (${totalWords - 1} words + checksum)`;

      renderComparisons();
      updateDisplay();
    }

    function setWordCount(count) {
      totalWords = count;
      document.getElementById('btn12').classList.toggle('active', count === 12);
      document.getElementById('btn24').classList.toggle('active', count === 24);
      reset();
    }

    function renderComparisons() {
      const container = document.getElementById('comparisons');
      container.innerHTML = comparisons.map((c, i) => `
        <div class="comparison" id="comparison-${i}">
          <div class="comparison-icon">${c.icon}</div>
          <div class="comparison-info">
            <div class="comparison-name">${c.name}</div>
            <div class="comparison-value">${c.exp}</div>
          </div>
          <div class="comparison-bar-container">
            <div class="comparison-bar" id="bar-${i}" style="width: 0%"></div>
          </div>
        </div>
      `).join('');
    }

    function getRandomWord() {
      return sampleWords[Math.floor(Math.random() * sampleWords.length)];
    }

    function formatBigInt(n) {
      const str = n.toString();
      if (str.length <= 12) {
        return str.replace(/\B(?=(\d{3})+(?!\d))/g, ',');
      }
      return str;
    }

    function toScientific(n) {
      const str = n.toString();
      const exp = str.length - 1;
      if (exp < 6) return '';
      const mantissa = str[0] + '.' + str.slice(1, 3);
      return `≈ ${mantissa} × 10^${exp}`;
    }

    function updateDisplay() {
      document.getElementById('totalValue').textContent = formatBigInt(totalCombinations);
      document.getElementById('totalScientific').textContent = toScientific(totalCombinations);

      // Update formula
      const checksumChoices = CHECKSUM_MAP[totalWords];
      const entropyBits = ENTROPY_BITS[totalWords];
      const normalWords = totalWords - 1;

      if (currentWord === 0) {
        document.getElementById('formula').textContent = `2048 choices per word (${checksumChoices} for checksum)`;
      } else if (currentWord < normalWords) {
        document.getElementById('formula').textContent = `2048^${currentWord}`;
      } else if (currentWord === normalWords) {
        document.getElementById('formula').textContent = `2048^${normalWords}`;
      } else {
        document.getElementById('formula').textContent = `2048^${normalWords} × ${checksumChoices} = 2^${entropyBits}`;
      }

      // Update comparisons
      const totalFloat = Number(totalCombinations);
      comparisons.forEach((c, i) => {
        const bar = document.getElementById(`bar-${i}`);
        const comparison = document.getElementById(`comparison-${i}`);
        const ratio = Math.min(100, (Math.log10(totalFloat) / Math.log10(c.value)) * 100);
        bar.style.width = `${ratio}%`;
        comparison.classList.toggle('exceeded', totalFloat >= c.value);
      });

      // Update time
      const guessesPerSecond = 1e12; // 1 trillion
      const secondsNeeded = totalFloat / guessesPerSecond;
      const timeStr = formatTime(secondsNeeded);
      document.getElementById('timeValue').textContent = timeStr;

      // Update time note based on difficulty
      const timeNote = document.getElementById('timeNote');
      const years = secondsNeeded / 31536000;
      if (secondsNeeded < 3600) { // less than an hour
        timeNote.textContent = 'Easily crackable — keep adding words!';
      } else if (secondsNeeded < 31536000) { // less than a year
        timeNote.textContent = 'Getting harder, but still vulnerable';
      } else if (years < 1e9) { // less than a billion years
        timeNote.textContent = 'Impractical to crack';
      } else {
        timeNote.textContent = 'Even with all computers on Earth combined, this is impossible';
      }

      // Update buttons
      const btn = document.getElementById('spinBtn');
      const skipBtn = document.getElementById('skipBtn');
      if (currentWord >= totalWords) {
        btn.disabled = true;
        btn.textContent = 'Complete!';
        skipBtn.disabled = true;
      } else {
        btn.disabled = false;
        skipBtn.disabled = false;
        const isLastWord = currentWord === totalWords - 1;
        btn.textContent = isLastWord ? 'Pick Checksum' : `Pick Word #${currentWord + 1}`;
      }
    }

    function formatTime(seconds) {
      if (seconds < 1) return 'instant';
      if (seconds < 60) return `${seconds.toFixed(0)} seconds`;
      if (seconds < 3600) return `${(seconds / 60).toFixed(0)} minutes`;
      if (seconds < 86400) return `${(seconds / 3600).toFixed(0)} hours`;
      if (seconds < 31536000) return `${(seconds / 86400).toFixed(0)} days`;

      const years = seconds / 31536000;
      if (years < 1e6) return `${years.toFixed(0).replace(/\B(?=(\d{3})+(?!\d))/g, ',')} years`;
      if (years < 1e9) return `${(years / 1e6).toFixed(1)} million years`;
      if (years < 1e12) return `${(years / 1e9).toFixed(1)} billion years`;
      if (years < 1e15) return `${(years / 1e12).toFixed(1)} trillion years`;

      const exp = Math.floor(Math.log10(years));
      const mantissa = (years / Math.pow(10, exp)).toFixed(1);
      return `${mantissa} × 10^${exp} years`;
    }

    function spinNext() {
      if (isSpinning || currentWord >= totalWords) return;

      isSpinning = true;
      const slot = document.getElementById(`slot-${currentWord}`);
      slot.className = 'slot active spinning';
      const wordEl = slot.querySelector('.slot-word');

      let spins = 0;
      const maxSpins = 20 + Math.random() * 10;

      spinInterval = setInterval(() => {
        wordEl.textContent = getRandomWord();
        spins++;

        if (spins >= maxSpins) {
          clearInterval(spinInterval);
          finishSpin(slot, wordEl);
        }
      }, 80);
    }

    function finishSpin(slot, wordEl) {
      const finalWord = getRandomWord();
      wordEl.textContent = finalWord;
      const isChecksum = currentWord === totalWords - 1;
      slot.className = 'slot filled' + (isChecksum ? ' checksum' : '');

      const choicesEl = slot.querySelector('.slot-choices');
      const choices = isChecksum ? CHECKSUM_MAP[totalWords] : BIP39_WORDS;
      choicesEl.textContent = `1 of ${choices}`;

      totalCombinations = totalCombinations * BigInt(choices);
      currentWord++;
      isSpinning = false;

      updateDisplay();
    }

    function skipToEnd() {
      if (isSpinning) return;

      while (currentWord < totalWords) {
        const slot = document.getElementById(`slot-${currentWord}`);
        const wordEl = slot.querySelector('.slot-word');
        const choicesEl = slot.querySelector('.slot-choices');
        const isChecksum = currentWord === totalWords - 1;

        wordEl.textContent = getRandomWord();
        slot.className = 'slot filled' + (isChecksum ? ' checksum' : '');

        const choices = isChecksum ? CHECKSUM_MAP[totalWords] : BIP39_WORDS;
        choicesEl.textContent = `1 of ${choices}`;
        totalCombinations = totalCombinations * BigInt(choices);
        currentWord++;
      }

      updateDisplay();
    }

    function reset() {
      if (spinInterval) clearInterval(spinInterval);
      currentWord = 0;
      isSpinning = false;
      totalCombinations = 1n;
      init();
    }

    // Initialize
    init();
  </script>
</body>
</html>