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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>Kaspa Explained: What KAS Is, How GHOSTDAG Works, and What Is Live Now</title>
<meta name="description" content="Kaspa explained in plain English: what KAS is, how the proof-of-work blockDAG and GHOSTDAG work, and what is live now versus roadmap work.">
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<meta property="og:title" content="Kaspa Explained: What KAS Is and What Is Live Now">
<meta property="og:description" content="Plain-English Kaspa guide: KAS, Proof of Work, blockDAG ordering, GHOSTDAG, claims, Toccata status, and sources.">
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<meta name="twitter:title" content="Kaspa Explained: What KAS Is and What Is Live Now">
<meta name="twitter:description" content="What Kaspa is, what is live, what is roadmap, and which claims need checking.">
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<meta name="dateModified" content="2026-06-29">
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"Kaspa",
"Proof of Work",
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<link rel="stylesheet" href="styles.css?v=20260627-next-card-fix">
<script defer src="nav.js?v=20260606-anchor-clearance"></script>
<script defer src="live-kaspa.js?v=20260620-toccata-status"></script>
</head>
<body>
<a class="skip-link" href="#top">Skip to content</a>
<header class="site-header">
<nav class="nav" aria-label="Primary">
<a class="brand" href="/" aria-label="Kaspa Explained home">
<span class="brand-mark" aria-hidden="true"></span>
Kaspa Explained
</a>
<button class="nav-menu-button" type="button" aria-expanded="false" aria-controls="primary-links">Menu</button>
<div id="primary-links" class="nav-links">
<a href="/what-is-kaspa">What is Kaspa</a>
<a href="/status">Live now</a>
<a href="/kaspa-claims-checker">Check claims</a>
<a href="/skeptical-case">Risks</a>
<a href="/build-on-kaspa">Build</a>
<a href="/sources">Sources</a>
</div>
<button class="theme-toggle" type="button" aria-label="Switch theme">Light</button>
<a class="nav-cta" href="/toccata-status">Toccata status</a>
</nav>
</header>
<main id="top" tabindex="-1" class="home-page">
<section class="hero">
<div class="hero-copy">
<p class="eyebrow">Independent explainer</p>
<h1>What is Kaspa?</h1>
<p class="lead">Kaspa is a live <a href="/glossary#proof-of-work">proof-of-work</a> network that uses a blockDAG instead of a single chain. Miners can create blocks in parallel, and <a href="/glossary#ghostdag">GHOSTDAG</a> orders those blocks into one shared payment history.</p>
<p class="plain-bridge">This site separates what is live today, what is targeted for activation, what is roadmap, and what still needs evidence.</p>
<div class="hero-signal-grid" aria-label="Kaspa homepage shortcuts">
<a href="/what-is-kaspa"><span>What is Kaspa?</span><strong>Network overview</strong><small>Proof of Work, blockDAG, GHOSTDAG, and KAS.</small></a>
<a href="/status"><span>Live now</span><strong>Current network status</strong><small>Mainnet facts, Toccata timing, and dated checks.</small></a>
<a href="/kaspa-claims-checker"><span>Check claims</span><strong>Label before repeating</strong><small>Live, testnet, targeted, roadmap, research, wrong.</small></a>
<a href="/skeptical-case"><span>Risks</span><strong>Read what can break</strong><small>Adoption, liquidity, node load, mining, roadmap execution.</small></a>
<a href="/build-on-kaspa"><span>Build</span><strong>Builder status</strong><small>Payments now, Toccata rules next, vProgs later.</small></a>
<a href="/sources"><span>Sources</span><strong>Check the evidence</strong><small>Releases, KIPs, docs, APIs, papers, and repo links.</small></a>
</div>
<div class="actions">
<a class="button primary" href="/what-is-kaspa">Read What is Kaspa</a>
<a class="button" href="/status">Check what is live</a>
<a class="button" href="/build-on-kaspa">Build on Kaspa</a>
</div>
<p class="source-inline">New to crypto itself? Start with <a href="/start-here">Start Here</a>.</p>
</div>
<div class="hero-visual" aria-label="BlockDAG concept diagram">
<svg viewBox="40 58 650 390" role="img" aria-labelledby="hero-dag-title hero-dag-desc">
<title id="hero-dag-title">Parallel blocks ordered by GHOSTDAG</title>
<desc id="hero-dag-desc">A simplified blockDAG with several layers of parallel proof-of-work blocks referencing earlier blocks, plus a highlighted ordering path.</desc>
<defs>
<linearGradient id="dag-line" x1="0" x2="1">
<stop offset="0" stop-color="#9bd7bd"/>
<stop offset="1" stop-color="#7dd3fc"/>
</linearGradient>
</defs>
<g class="dag-links">
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<g class="dag-order">
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</g>
<g class="dag-node selected" transform="translate(92 248)"><circle r="30"/><text y="7">A</text></g>
<g class="dag-node soft" transform="translate(186 150)"><circle r="26"/><text y="7">B</text></g>
<g class="dag-node selected" transform="translate(188 248)"><circle r="26"/><text y="7">C</text></g>
<g class="dag-node soft" transform="translate(186 346)"><circle r="26"/><text y="7">D</text></g>
<g class="dag-node soft" transform="translate(292 112)"><circle r="26"/><text y="7">E</text></g>
<g class="dag-node selected" transform="translate(292 214)"><circle r="26"/><text y="7">F</text></g>
<g class="dag-node soft" transform="translate(292 316)"><circle r="26"/><text y="7">G</text></g>
<g class="dag-node soft" transform="translate(402 146)"><circle r="26"/><text y="7">H</text></g>
<g class="dag-node selected" transform="translate(402 250)"><circle r="26"/><text y="7">I</text></g>
<g class="dag-node soft" transform="translate(402 354)"><circle r="26"/><text y="7">J</text></g>
<g class="dag-node soft" transform="translate(514 118)"><circle r="26"/><text y="7">K</text></g>
<g class="dag-node selected" transform="translate(514 220)"><circle r="26"/><text y="7">L</text></g>
<g class="dag-node soft" transform="translate(514 326)"><circle r="26"/><text y="7">M</text></g>
<g class="dag-node selected" transform="translate(620 188)"><circle r="28"/><text y="7">N</text></g>
<g class="dag-node soft" transform="translate(620 292)"><circle r="26"/><text y="7">O</text></g>
</svg>
<div class="visual-caption visual-readout">
<div>
<span>Structure</span>
<strong>Parallel work stays visible</strong>
</div>
<div>
<span>Rule</span>
<strong>GHOSTDAG orders history</strong>
</div>
<div>
<span>Boundary</span>
<strong>Fast inclusion with confirmation risk</strong>
</div>
</div>
</div>
</section>
<section id="toccata-status-preview" class="section status-workbench" aria-labelledby="toccata-status-preview-title">
<div>
<p class="eyebrow">Toccata status</p>
<h2 id="toccata-status-preview-title">Activation scheduled</h2>
<p class="lead">Rusty Kaspa v2.0.1 is the current Toccata release. Rusty Kaspa v2.0.0 set the activation target at DAA score <strong>474,165,565</strong>, roughly <strong>June 30, 2026 at 16:15 UTC</strong>. The June 29 check still had mainnet below that score.</p>
<p class="source-inline">Open <a href="/toccata-explained">Toccata Explained</a> for what changes, <a href="/toccata-status">Toccata status</a> for the activation check, or <a href="/kaspa-smart-contracts-status">Smart-Contract Status</a> for app wording. Primary sources: <a href="https://github.com/kaspanet/rusty-kaspa/releases/tag/v2.0.1">Rusty Kaspa v2.0.1 release</a> and <a href="https://github.com/kaspanet/rusty-kaspa/releases/tag/v2.0.0">v2.0.0 activation release</a>.</p>
</div>
<div class="status-lane-grid">
<a href="/toccata-status"><span>Scheduled</span><strong>Activation target</strong><small>DAA 474,165,565 is the number to watch.</small></a>
<a href="/toccata-explained"><span>What changes</span><strong>UTXO expressiveness</strong><small>Covenants, ZK checks, lanes, based apps, and vProgs boundaries.</small></a>
<a href="/kaspa-tps-explained"><span>Capacity</span><strong>TPS of what?</strong><small>Payments, covenants, proofs, tokens, and future app throughput differ.</small></a>
<a href="/sources#code-tracking"><span>Evidence</span><strong>Read the primary links</strong><small>Releases, KIPs, Testnet-10, vProgs, and Argent.</small></a>
</div>
</section>
<section id="blockdag-demo" class="protocol-demo section" data-demo-mode="dag" data-reader-mode="simple" aria-labelledby="blockdag-demo-title">
<div class="protocol-demo-head">
<div>
<p class="eyebrow">BlockDAG model</p>
<h2 id="blockdag-demo-title">Compare the chain and the graph</h2>
<p class="lead">A simplified model of one selected chain versus a graph that can include parallel blocks before ordering them.</p>
</div>
<div class="demo-status-card" aria-live="polite">
<span>Current view</span>
<strong id="demo-status-label">Kaspa blockDAG</strong>
</div>
</div>
<div class="demo-grid">
<div class="demo-workspace" aria-label="Blockchain and blockDAG visual model">
<svg viewBox="0 0 760 420" role="img" aria-labelledby="demo-svg-title demo-svg-desc">
<title id="demo-svg-title">Blockchain versus blockDAG visual model</title>
<desc id="demo-svg-desc">A simplified diagram that can show a linear chain, a Kaspa-style blockDAG, or a higher-throughput burst where parallel blocks are still referenced and ordered.</desc>
<defs>
<marker id="demo-arrow" viewBox="0 0 6 6" markerWidth="3.2" markerHeight="3.2" refX="5.2" refY="3" orient="auto" markerUnits="strokeWidth">
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</marker>
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<text class="demo-label" x="90" y="330">One selected path. Competing work falls out of the record.</text>
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<text class="demo-label" x="90" y="362">Parallel blocks can stay visible, then GHOSTDAG orders the history.</text>
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<g class="demo-block selected" transform="translate(640 140)"><circle r="30"></circle><text y="6">13</text></g>
<g class="demo-block included" transform="translate(640 315)"><circle r="28"></circle><text y="6">14</text></g>
<text class="demo-label" x="76" y="402">Higher block rate only helps if the graph stays bounded and ordered.</text>
</g>
</svg>
</div>
<aside class="demo-control-panel" aria-label="BlockDAG visual controls">
<div>
<span class="control-label">Choose the view</span>
<div class="segmented-control" role="group" aria-label="Diagram view">
<button type="button" data-demo-mode="chain">Single chain</button>
<button type="button" data-demo-mode="dag" aria-pressed="true">BlockDAG</button>
<button type="button" data-demo-mode="pressure">Higher load</button>
</div>
</div>
<div>
<span class="control-label">Reader mode</span>
<div class="segmented-control compact" role="group" aria-label="Reader level">
<button type="button" data-reader-mode="simple" aria-pressed="true">Plain</button>
<button type="button" data-reader-mode="bitcoin">Bitcoin user</button>
<button type="button" data-reader-mode="builder">Builder</button>
</div>
</div>
<div class="demo-explainer">
<span id="demo-mode-tag">Kaspa blockDAG</span>
<p id="demo-explainer-text">Kaspa keeps more honest work in the graph. GHOSTDAG gives nodes a rule for turning that graph into one ordered payment history.</p>
</div>
<dl class="demo-metrics" aria-label="Teaching model assumptions">
<div><dt>Model</dt><dd>Simulated</dd></div>
<div><dt>Mainnet</dt><dd>10 BPS era</dd></div>
<div><dt>Boundary</dt><dd>Fast inclusion with confirmation risk</dd></div>
</dl>
</aside>
</div>
</section>
<section id="live-network" class="live-kaspa-panel section" aria-labelledby="live-network-title">
<div class="live-panel-head">
<div>
<p class="eyebrow">Network readout</p>
<h2 id="live-network-title">Current network snapshot</h2>
<p class="lead">Live API readout for orientation. Use a node, explorer, source, or proof path for independent verification.</p>
<p class="fit-note">If the live readout stalls, treat the cards below as temporarily unavailable and use <a href="/status">Status</a> and <a href="/sources">Sources</a> for durable claims.</p>
</div>
<div class="live-status-light" id="live-status-light" aria-live="polite">
<span aria-hidden="true"></span>
<strong>Loading</strong>
</div>
</div>
<div class="live-metric-grid" aria-label="Live Kaspa metrics">
<article>
<span>Circulating supply</span>
<strong id="live-supply">Loading</strong>
<p>Reported by `api.kaspa.org/info/coinsupply`.</p>
</article>
<article>
<span>Mined</span>
<strong id="live-mined">Loading</strong>
<p>Circulating supply divided by max supply.</p>
</article>
<article>
<span>DAG blocks</span>
<strong id="live-blocks">Loading</strong>
<p>Current blockDAG count from the network readout.</p>
</article>
<article>
<span>DAA score</span>
<strong id="live-daa">Loading</strong>
<p>Kaspa's ordering-height style progress marker.</p>
</article>
</div>
<div class="origin-proof-strip">
<div>
<span>Origin proof</span>
<p>Kaspa.org publishes the fair-launch proof path: empty genesis UTXO set, Bitcoin timestamp anchors, checkpoint linkage, and scheduled emission after the Nov. 22, 2021 checkpoint.</p>
</div>
<div class="actions">
<a class="button primary" href="https://kaspa.org/#verify">Verify on Kaspa.org</a>
</div>
<p class="source-inline">Extra checks: <a href="https://github.com/kaspagang/kaspad-py-explorer/blob/main/src/genesis_proof.ipynb">run the proof</a>, <a href="https://api.kaspa.org/docs">REST API docs</a>, and <a href="https://kgi.kaspad.net/">DAGVIZ</a>.</p>
</div>
<p class="live-footnote" id="live-updated">Waiting for live data.</p>
</section>
<section class="section status-workbench" aria-labelledby="status-workbench-title">
<div>
<p class="eyebrow">Status</p>
<h2 id="status-workbench-title">Live, testnet, roadmap, research</h2>
<p class="lead">Check whether the claim is live mainnet, testnet evidence, roadmap, or research before repeating it.</p>
</div>
<div class="status-lane-grid">
<a href="/kaspa-claims-checker"><span>Live</span><strong>10 BPS PoW blockDAG</strong><small>Mining, UTXO ownership, GHOSTDAG, wallets, nodes, explorers.</small></a>
<a href="/toccata-status"><span>Testnet</span><strong>TN10/TN12 rehearsal</strong><small>Builder evidence before mainnet activation.</small></a>
<a href="/toccata-status"><span>Scheduled</span><strong>Toccata activation</strong><small>v2.0.0 targets DAA 474,165,565.</small></a>
<a href="/application-layer"><span>Roadmap</span><strong>Apps that prove rules</strong><small>Richer app state, based apps, later vProgs, shared ordering.</small></a>
<a href="/skeptical-case"><span>Risk</span><strong>Execution risk remains</strong><small>Liquidity, node cost, mining concentration, fee demand, apps.</small></a>
</div>
</section>
<section class="section build-path-console" aria-labelledby="build-path-title">
<div>
<p class="eyebrow">Build path</p>
<h2 id="build-path-title">What can be built now?</h2>
<p class="lead">Money movement is live. Receipts and source-verifiable reads can be built today. Toccata brings covenant rules and richer proof-based app foundations into the next build path.</p>
</div>
<div class="build-path-grid">
<article>
<span>Now</span>
<strong>Move and inspect money</strong>
<p>Wallets, payments, receipts, exchange flows, mining/node visibility, and better confirmation-risk UX.</p>
</article>
<article>
<span>Now</span>
<strong>Verify receipts</strong>
<p>Apps can show txid, amount, address, accepted status, source, timestamp, and fallback verification links.</p>
</article>
<article>
<span>Toccata work</span>
<strong>Enforce spending rules</strong>
<p>Vault limits, delays, escrow, assurance contracts, asset rules, and bounded UTXO state machines are the near-term app surface.</p>
</article>
<article>
<span>Later</span>
<strong>Prove richer app logic</strong>
<p>Markets, lending, funding rules, attestations, and shared commitments need richer app-state, custody, oracle, and proof paths.</p>
</article>
</div>
<div class="actions">
<a class="button primary" href="/build-this-now">Build this now</a>
</div>
<p class="source-inline">For the full path, open the <a href="/builder-guide">builder guide</a>.</p>
</section>
<section class="section transaction-path" aria-labelledby="transaction-path-title">
<div>
<p class="eyebrow">Transaction path</p>
<h2 id="transaction-path-title">Wallet to confirmation</h2>
<p class="lead">A transaction is created, broadcast, mined, ordered, then gains confirmation confidence.</p>
</div>
<div class="transaction-rail" aria-label="Simplified Kaspa transaction path">
<article><span>1</span><strong>Create</strong><p>Wallet prepares inputs, outputs, amount, and fee.</p></article>
<article><span>2</span><strong>Broadcast</strong><p>The transaction reaches nodes and miners.</p></article>
<article><span>3</span><strong>Mine</strong><p>A miner includes it in a proof-of-work block.</p></article>
<article><span>4</span><strong>Order</strong><p>The block joins the DAG and GHOSTDAG orders history.</p></article>
<article><span>5</span><strong>Confirm</strong><p>Confidence increases with more accepted work and time.</p></article>
</div>
</section>
<section class="next-step section" aria-label="Suggested next step">
<h2>Next</h2>
<p>Pick the route that matches the question.</p>
<a class="button primary" href="/kaspa-claims-checker">Claims checker</a>
<a class="button" href="/toccata-status">Toccata status</a>
<p class="source-inline">For deeper review: <a href="/build-on-kaspa">build on Kaspa</a>, <a href="/skeptical-case">skeptical case</a>, <a href="/command-line">verify yourself</a>, and <a href="/kaspa-status-updates">status updates</a>.</p>
</section>
<!-- related-links:start -->
<section class="section site-related" aria-labelledby="related-links-title">
<p class="eyebrow">Keep reading</p>
<h2 id="related-links-title">Next pages</h2>
<div class="site-related-grid">
<a href="/start-here"><span>Next</span><strong>Start with the problem</strong><p>A beginner-first start page for Kaspa Explained: learn crypto from zero, then understand coins, market value, tradeoffs, and where Kaspa fits.</p></a>
<a href="/status"><span>Status</span><strong>Kaspa current status</strong><p>A compact status page for Kaspa: what is live, what is targeted, what is roadmap, what remains research, and which common claims need context.</p></a>
<a href="/sources"><span>Sources</span><strong>Sources for Kaspa Explained</strong><p>Source hierarchy, public reference map, and credited external learning resources used by Kaspa Explained.</p></a>
</div>
</section>
<!-- related-links:end -->
</main>
<footer class="footer">
<div class="footer-grid">
<p><strong>Independent Kaspa explainer.</strong> Claims are labeled live, targeted, roadmap, research, unsupported, or wrong. Not investment advice.</p>
<nav class="footer-nav-groups" aria-label="Footer">
<div class="footer-link-group" aria-label="Learn">
<span>Learn</span>
<a href="/start-here">Start here</a>
<a href="/what-is-kaspa">Kaspa 101</a>
<a href="/overview">90-second overview</a>
<a href="/glossary">Glossary</a>
</div>
<div class="footer-link-group" aria-label="Verify">
<span>Verify</span>
<a href="/status">Status</a>
<a href="/kaspa-claims-checker">Claims checker</a>
<a href="/toccata-status">Toccata status</a>
<a href="/skeptical-case">Skeptical case</a>
<a href="/sources">Sources</a>
</div>
<div class="footer-link-group" aria-label="Build">
<span>Build</span>
<a href="/build-on-kaspa">Build on Kaspa</a>
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</footer>
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