igneum/site/light.html

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<title>Igneum light wallet</title>
<meta name="description" content="A Devnet 3 balance your browser proves itself: certificate, headers, coinbase, segment record and account proof, all recomputed in the tab. Devnet 3, no value.">
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<a class="skip" href="#main">Skip to content</a>
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<a href="/" class="logo" aria-label="Igneum home">
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<span class="word">IGNEUM</span>
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<span class="devnet" id="nav-devnet" title="igneum-devnet-3, chain id 4464. Coins have no value. The chain may reset."><span class="dot off" id="foot-dot"></span><span id="foot-state">devnet</span></span>
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<div class="nav-group" role="listitem"><button type="button" class="group-btn" id="nav-btn-mine" data-group="mine" aria-expanded="false" aria-controls="nav-panel-mine" aria-haspopup="true">Mine<svg class="icon" viewBox="0 0 24 24" aria-hidden="true"><path d="m7 10 5 5 5-5"/></svg></button></div>
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<a href="/download" class="btn primary small cta" data-nav="download">Download</a>
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<div class="nav-panel" id="nav-panel-mine" data-group="mine" role="region" aria-labelledby="nav-btn-mine" hidden>
<div class="panel-list">
<a href="/miner" data-nav="miner"><b>Ember, the miner</b><span>One click installs the node, the miner and the prover.</span></a>
<a href="/download" data-nav="download"><b>Download</b><span>Windows, macOS, Linux and HiveOS.</span></a>
<a href="/app" data-nav="app"><b>The app</b><span>What you see while the card mines.</span></a>
<a href="/wallet" data-nav="wallet"><b>The wallet</b><span>Your coins. Final means final.</span></a>
<a href="/miners" data-nav="miners"><b>GPU bench table</b><span>Measured rates, card by card.</span></a>
<a href="/dev-fee" data-nav="dev-fee"><b>The dev fee</b><span>The optional one, in full view, off with one flag.</span></a>
<a href="/metamask" data-nav="metamask"><b>Add to MetaMask</b><span>Igneum as a network in your wallet.</span></a>
</div>
</div>
<div class="nav-panel" id="nav-panel-network" data-group="network" role="region" aria-labelledby="nav-btn-network" hidden>
<div class="panel-list">
<a href="/live" data-nav="live"><b>Live devnet</b><span>The chain as it grows, one lane per miner.</span></a>
<a href="/explorer" data-nav="explorer"><b>Explorer</b><span>Look a block or an address up.</span></a>
<a href="/journey" data-nav="journey"><b>The journey</b><span>Six phases, four gates, the log behind them.</span></a>
<a href="/bench" data-nav="bench"><b>Engineering log</b><span>Every measurement, with the commands that made it.</span></a>
<a href="/evidence" data-nav="evidence"><b>Evidence</b><span>Every claim and how far it is tested.</span></a>
<a href="/light" data-nav="light" aria-current="page"><b>Light wallet</b><span>A balance your browser proves, trusting no node.</span></a>
<a href="/receipt" data-nav="receipt"><b>Payment receipt</b><span>A receipt any third party re-verifies offline.</span></a>
<a href="/oracle" data-nav="oracle"><b>State oracle on Sepolia</b><span>Devnet 3 balances read from another chain.</span></a>
</div>
</div>
<div class="nav-panel" id="nav-panel-learn" data-group="learn" role="region" aria-labelledby="nav-btn-learn" hidden>
<div class="panel-list">
<a href="/litepaper" data-nav="litepaper"><b>Litepaper</b><span>The design, as published.</span></a>
<a href="/income" data-nav="income"><b>Income</b><span>What your card would mine, from the live network.</span></a>
<a href="/economics" data-nav="economics"><b>Economics</b><span>The emission, the split and the fees, each with its line in the node.</span></a>
<a href="/ledger" data-nav="ledger"><b>Ledger</b><span>Every criticism, answered or conceded.</span></a>
<a href="/claims" data-nav="claims"><b>What Igneum does not claim</b><span>The limits, stated first.</span></a>
<a href="/randomx" data-nav="randomx"><b>Igneum vs RandomX</b><span>What was kept and what was rebuilt for GPUs.</span></a>
<a href="/provenance" data-nav="provenance"><b>Built on the shoulders</b><span>Every borrowed part, credited.</span></a>
</div>
</div>
<div class="nav-panel" id="nav-panel-build" data-group="build" role="region" aria-labelledby="nav-btn-build" hidden>
<div class="panel-list">
<a href="/build" data-nav="build"><b>Build on Igneum</b><span>Chain ids, RPC, a contract in five minutes.</span></a>
<a href="/faucet" data-nav="faucet"><b>Devnet faucet</b><span>10 IGN of devnet coin, once a day.</span></a>
<a href="/swap" data-nav="swap"><b>Swap</b><span>Test tokens on Devnet 3; every swap is a proven block.</span></a>
<a href="/grants" data-nav="grants"><b>Grants</b><span>Tooling, apps, infrastructure, research.</span></a>
</div>
</div>
</div>
</div>
<div class="nav-sheet" id="nav-sheet" role="dialog" aria-modal="true" aria-label="Menu" hidden>
<div class="sheet-scroll">
<div class="sheet-group"><div class="sheet-head">Mine</div>
<a href="/miner" data-nav="miner"><b>Ember, the miner</b><span>One click installs the node, the miner and the prover.</span></a>
<a href="/download" data-nav="download"><b>Download</b><span>Windows, macOS, Linux and HiveOS.</span></a>
<a href="/app" data-nav="app"><b>The app</b><span>What you see while the card mines.</span></a>
<a href="/wallet" data-nav="wallet"><b>The wallet</b><span>Your coins. Final means final.</span></a>
<a href="/miners" data-nav="miners"><b>GPU bench table</b><span>Measured rates, card by card.</span></a>
<a href="/dev-fee" data-nav="dev-fee"><b>The dev fee</b><span>The optional one, in full view, off with one flag.</span></a>
<a href="/metamask" data-nav="metamask"><b>Add to MetaMask</b><span>Igneum as a network in your wallet.</span></a>
</div>
<div class="sheet-group"><div class="sheet-head">Network</div>
<a href="/live" data-nav="live"><b>Live devnet</b><span>The chain as it grows, one lane per miner.</span></a>
<a href="/explorer" data-nav="explorer"><b>Explorer</b><span>Look a block or an address up.</span></a>
<a href="/journey" data-nav="journey"><b>The journey</b><span>Six phases, four gates, the log behind them.</span></a>
<a href="/bench" data-nav="bench"><b>Engineering log</b><span>Every measurement, with the commands that made it.</span></a>
<a href="/evidence" data-nav="evidence"><b>Evidence</b><span>Every claim and how far it is tested.</span></a>
<a href="/light" data-nav="light" aria-current="page"><b>Light wallet</b><span>A balance your browser proves, trusting no node.</span></a>
<a href="/receipt" data-nav="receipt"><b>Payment receipt</b><span>A receipt any third party re-verifies offline.</span></a>
<a href="/oracle" data-nav="oracle"><b>State oracle on Sepolia</b><span>Devnet 3 balances read from another chain.</span></a>
</div>
<div class="sheet-group"><div class="sheet-head">Learn</div>
<a href="/litepaper" data-nav="litepaper"><b>Litepaper</b><span>The design, as published.</span></a>
<a href="/income" data-nav="income"><b>Income</b><span>What your card would mine, from the live network.</span></a>
<a href="/economics" data-nav="economics"><b>Economics</b><span>The emission, the split and the fees, each with its line in the node.</span></a>
<a href="/ledger" data-nav="ledger"><b>Ledger</b><span>Every criticism, answered or conceded.</span></a>
<a href="/claims" data-nav="claims"><b>What Igneum does not claim</b><span>The limits, stated first.</span></a>
<a href="/randomx" data-nav="randomx"><b>Igneum vs RandomX</b><span>What was kept and what was rebuilt for GPUs.</span></a>
<a href="/provenance" data-nav="provenance"><b>Built on the shoulders</b><span>Every borrowed part, credited.</span></a>
</div>
<div class="sheet-group"><div class="sheet-head">Build</div>
<a href="/build" data-nav="build"><b>Build on Igneum</b><span>Chain ids, RPC, a contract in five minutes.</span></a>
<a href="/faucet" data-nav="faucet"><b>Devnet faucet</b><span>10 IGN of devnet coin, once a day.</span></a>
<a href="/swap" data-nav="swap"><b>Swap</b><span>Test tokens on Devnet 3; every swap is a proven block.</span></a>
<a href="/grants" data-nav="grants"><b>Grants</b><span>Tooling, apps, infrastructure, research.</span></a>
</div>
<div class="sheet-foot">
<a href="/download" class="btn primary big" data-nav="download">Download</a>
<div class="sheet-social"><a href="https://discord.gg/igneum" target="_blank" rel="noopener">Discord</a><a href="https://git.igneum.network/igneum-network/spec" target="_blank" rel="noopener">Source</a><a href="https://www.reddit.com/user/Igneum_network/" target="_blank" rel="noopener">Reddit</a></div>
</div>
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<div class="breadcrumb"><a href="/">Igneum</a><span>/</span><span>Light wallet</span></div>
<div class="eyebrow"><span class="line"></span>Reference app 1 · Devnet 3, no value</div>
<h1>A balance your browser proves<span class="accent">.</span></h1>
</div>
<p class="note">Paste a Devnet 3 address. This tab fetches the latest finality certificate, the header chain, the carrier block's coinbase, the segment record and an account proof from a read service, then checks every byte itself: BLS over the checkpoint, every header hash and parent link, the merkle path, the aggregator's signature, the Merkle Patricia proof under the proven state root. The service cannot lie about the balance. It can only refuse to answer.</p>
<div class="why">
<p><b>Why this only works on a proven chain.</b> The balance rests on a state root that an aggregator signed inside a block, after proving the segment's execution, and that every node checks against its own execution before paying the record. On a chain without proofs a light client has only a node's word for a balance.</p>
<p>Source: <code>site/lc/core.js</code> (the checks), <code>site/lc/app.js</code> (this page), <code>tools/reference-apps/light-service/serve.mjs</code> (the read service), fork branch <code>light-apps-node</code> (<code>eth_getProof</code> on the node). Test with the negative cases: <a href="/lc/test">/lc/test</a> in the browser, <code>tools/reference-apps/light-service/verify.test.mjs</code> under Node.</p>
</div>
<section class="card" aria-labelledby="verify">
<h2 id="verify">Verify a balance</h2>
<form class="vform" data-form="light" novalidate>
<label for="address">Devnet 3 address</label>
<div class="row"><input id="address" name="address" inputmode="text" autocomplete="off" spellcheck="false" placeholder="0x…" pattern="^0x[0-9a-fA-F]{40}$"><button class="btn primary" type="submit">Verify in this tab</button></div>
<div class="vstatus" data-status role="status" aria-live="polite">Devnet 3, no value. Nothing here is a wallet that sends. It reads and proves.</div>
</form>
<div data-result></div>
</section>
<h2 id="checked">What is checked, in order</h2>
<ol>
<li>The certificate: the aggregate BLS signature of the signers over <code>igneum-vote-v1/igneum-devnet-3 || index || checkpoint hash</code>, the canonical voter order, the rule (two thirds of active weight and two thirds of total weight), and the header chain from the previous lock.</li>
<li>The header path from the carrier block up to the certified checkpoint: every header hash recomputes (BLAKE2b-256 keyed BlockHash over the header fields), every next header names the previous as a direct parent.</li>
<li>The coinbase transaction is in the carrier block: its hash recomputes (BLAKE2b-256 keyed TransactionHash over the serialized transaction) and the merkle path reaches the header's <code>hash_merkle_root</code>.</li>
<li>The segment record in the coinbase extra data: the aggregator's BLS signature over the record under the network's tag, whether the key is a voter with weight or a prove-only key, and the statement names the chain and the block whose state it commits.</li>
<li>The account proof: a keccak-keyed Merkle Patricia proof under the record's <code>post_root</code>, every node hashed on the way down, the balance read from the leaf.</li>
</ol>
<p class="note">What is trusted and said so on the result: the aggregator's statement being the true execution result (nodes check it natively before paying; the SP1 proof behind it is verified by nodes, not in this tab yet), and the voter table with weights, which comes from the node (spec 10.1). The read service names the node it reads.</p>
<p class="asof">Devnet 3, no value. The chain may reset. Pages like this one are demonstrations of the verification path, not a product.</p>
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// one request per button; the wallet shows the chain to the user and decides. No key, no seed, no signature here.
var CHAINS = {
testnet: { chainId: '0x116e', chainName: 'Igneum Testnet', nativeCurrency: { name: 'Igneum', symbol: 'IGN', decimals: 18 }, rpcUrls: ['https://rpc.testnet.igneum.network'], blockExplorerUrls: [] },
devnet: { chainId: '0x116f', chainName: 'Igneum Devnet (local node)', nativeCurrency: { name: 'Igneum', symbol: 'IGN', decimals: 18 }, rpcUrls: ['http://127.0.0.1:26790'], blockExplorerUrls: [] }
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