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<title>Igneum compatibility, measured: every row a test run against the devnet</title>
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<span class="devnet" id="nav-devnet" title="igneum-devnet-4, the Igneum 2.0 devnet, chain id 4465. Coins have no value. The chain may reset."><span class="dot off" id="foot-dot"></span><span id="foot-state" data-devnet-state="live">Devnet live</span></span>
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<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>
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<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="/evidence" data-nav="evidence"><b>Evidence</b><span>Every claim and how far it is tested.</span></a>
<a href="/light" data-nav="light"><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>Balances on the devnet, read from another chain.</span></a>
</div>
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<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="/scorecard" data-nav="scorecard"><b>Scorecard</b><span>The twelve acceptance gates, their evidence and where each stands.</span></a><a href="/acceptance" data-nav="acceptance"><b>Acceptance</b><span>The Test and Acceptance Standard, case by case, as each one passes.</span></a><a href="/audit" data-nav="audit"><b>Site audit</b><span>Every page, what the reset changed and what is open.</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>
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<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 the devnet; every swap is a proven block.</span></a>
<a href="/grants" data-nav="grants"><b>Grants</b><span>Tooling, apps, infrastructure, research.</span></a>
<a href="/compatibility" data-nav="compatibility" aria-current="page"><b>Compatibility</b><span>Every row a test run against the devnet.</span></a>
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<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="/evidence" data-nav="evidence"><b>Evidence</b><span>Every claim and how far it is tested.</span></a>
<a href="/light" data-nav="light"><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>Balances on the devnet, 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="/scorecard" data-nav="scorecard"><b>Scorecard</b><span>The twelve acceptance gates, their evidence and where each stands.</span></a><a href="/acceptance" data-nav="acceptance"><b>Acceptance</b><span>The Test and Acceptance Standard, case by case, as each one passes.</span></a><a href="/audit" data-nav="audit"><b>Site audit</b><span>Every page, what the reset changed and what is open.</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 the devnet; every swap is a proven block.</span></a>
<a href="/grants" data-nav="grants"><b>Grants</b><span>Tooling, apps, infrastructure, research.</span></a>
<a href="/compatibility" data-nav="compatibility" aria-current="page"><b>Compatibility</b><span>Every row a test run against the devnet.</span></a>
</div>
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<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>
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<div class="breadcrumb"><a href="/">Igneum</a><span>/</span><span>Compatibility, measured</span></div>
<div class="page-heading"><div><div class="eyebrow"><span class="line"></span>Build · compatibility</div>
<h1>Compatibility, measured</h1>
<p class="lead">Every row is a test that ran against the devnet, with its evidence; a row that could not run says why.</p></div></div>
</div>
</section>
<section class="section compact"><div class="container">
<div class="docs-layout">
<nav class="doc-nav" aria-label="Contents"><div class="eyebrow">Contents</div><a href="#representative-contracts">Representative contracts</a><a href="#wallet-fee-estimation">Wallet fee estimation</a><a href="#indexing">Indexing</a><a href="#failed-transactions">Failed transactions</a><a href="#receipts">Receipts</a><a href="#application-assumptions">Application assumptions</a><a href="#differences-block-context">Differences: block context</a><a href="#differences-randomness">Differences: randomness</a><a href="#differences-two-dimensional-fees">Differences: two-dimensional fees</a><a href="#what-the-differences-mean-for-an-application">What the differences mean for an application</a></nav>
<article class="doc-body" data-filter-list="compatibility"><section class="doc-section"><h1 id="compatibility-measured">Compatibility, measured</h1>
<p>A GPU-secured network for Ethereum-compatible applications and verifiable computation. Compatibility is a product deliverable here, not a sentence: every row below is a test that ran against the devnet from the repository (<code>tools/reference-apps/compat/run.mjs</code>), with its evidence, and a row that could not run says so and why. Devnet, no value.</p>
<p>Last run: 2026-10-08 16:34 UTC on igneum-devnet-4 (chain id 4465). 20 passed, 0 failed, 0 untested. Sender 0x27C433aE…, contracts compiled with solc 0.8.28+commit.7893614a.Emscripten.clang.</p>
<p>Three boundaries hold for everything on this page: proven execution is not finality; EVM compatibility is not Ethereum security; ZK is not privacy. The four words included, executed, proven and finalised are defined on <a href="/receipt">/receipt</a>.</p>
</section>
<section class="doc-section"><h2 id="representative-contracts">Representative contracts</h2>
<div class="tbl"><table><thead><tr><th>Row</th><th>Verdict</th><th>What was measured</th><th>Evidence</th></tr></thead><tbody><tr><td>an ERC-20 deploys (CREATE address as Ethereum computes it, code at the address)</td><td><strong>passed</strong></td><td>at 0xb2495fd85f54d73d7a13059a8e61956b67ad7aed, block 739, gas 436751 of 639078 estimated</td><td>tx 0x8fd280cb…a5b9, address 0xb2495fd85f54d73d7a13059a8e61956b67ad7aed, block 739, gasUsed 436751, estimated 639078</td></tr><tr><td>ERC-20 transfer: balances move, the Transfer log decodes, eth_call reads the new balance</td><td><strong>passed</strong></td><td>5 CTT to 0x00000000, log decoded, balance read</td><td>tx 0xe787770a…25fb, block 742</td></tr><tr><td>ERC-20 approve then transferFrom by a spender (the sender approves itself as spender): allowance consumed, logs decode</td><td><strong>passed</strong></td><td>allowance 3 then 1 after transferFrom of 2</td><td>approve 0xfc7a3a64…5d24, transferFrom 0x6c0a22dc…ef22</td></tr><tr><td>a probe contract deploys (counter, block context reader, revert, out-of-gas loop, CREATE2)</td><td><strong>passed</strong></td><td>at 0x3efc60794d574627eb5cb4eca77d96735dac4c42</td><td>tx 0x551c2403…8e15, address 0x3efc60794d574627eb5cb4eca77d96735dac4c42, block 751</td></tr><tr><td>a counter increments twice and reads 2 (state persists across chain blocks)</td><td><strong>passed</strong></td><td>count 2 after blocks 753 and 755</td><td>first 0xfaf85576…75a1, second 0x97ca4151…19c8</td></tr></tbody></table></div>
</section>
<section class="doc-section"><h2 id="wallet-fee-estimation">Wallet fee estimation</h2>
<div class="tbl"><table><thead><tr><th>Row</th><th>Verdict</th><th>What was measured</th><th>Evidence</th></tr></thead><tbody><tr><td>eth_gasPrice, eth_maxPriorityFeePerGas and eth_feeHistory answer in Ethereum's shapes</td><td><strong>passed</strong></td><td>gasPrice 196.130804856 gwei, priority 1 gwei, feeHistory 5 base fees</td><td>gasPrice 0x2daa4e9478, maxPriorityFeePerGas 0x3b9aca00</td></tr><tr><td>a plain transfer: eth_estimateGas against the receipt's gasUsed (the quote folds proving gas; both above Ethereum's 21,000)</td><td><strong>passed</strong></td><td>estimated 59650, used 21000 (35% of the estimate); Ethereum's figure is 21,000</td><td>tx 0x99c4dc1a…cad0, estimated 59650, gasUsed 21000, ethereum 21000</td></tr><tr><td>a contract call: eth_estimateGas against gasUsed (a wallet that quotes from the node is covered)</td><td><strong>passed</strong></td><td>estimated 134366, used 26371</td><td>tx 0xeb8bafa3…bee4, estimated 134366, gasUsed 26371</td></tr><tr><td>the documented difference: a transfer sent with a local 21,000 gas limit (Ethereum's intrinsic cost) instead of the node's quote</td><td><strong>passed</strong></td><td>the node accepted it and it succeeded with gasUsed 21000: a wallet with a hard-coded 21,000 works</td><td>sent true, hash 0x538fdf72…b121, status success, gasUsed 21000</td></tr></tbody></table></div>
</section>
<section class="doc-section"><h2 id="indexing">Indexing</h2>
<div class="tbl"><table><thead><tr><th>Row</th><th>Verdict</th><th>What was measured</th><th>Evidence</th></tr></thead><tbody><tr><td>eth_getLogs by address, by topic and by block range returns the receipts' logs with consistent logIndex and transactionIndex</td><td><strong>passed</strong></td><td>4 logs by address, 3 Transfer logs by topic, each found in its receipt</td><td>byAddress 4, byTopic 3, fromBlock 739</td></tr><tr><td>eth_getBlockByNumber with full transactions, eth_getBlockReceipts and eth_getTransactionByHash agree on indices and hashes</td><td><strong>passed</strong></td><td>block 742: 1 transactions, indices 0 to 0 continuous</td><td>block 742, count 1</td></tr></tbody></table></div>
</section>
<section class="doc-section"><h2 id="failed-transactions">Failed transactions</h2>
<div class="tbl"><table><thead><tr><th>Row</th><th>Verdict</th><th>What was measured</th><th>Evidence</th></tr></thead><tbody><tr><td>a revert with a reason: eth_call returns the reason, the sent transaction has status 0, gas is charged, the nonce advances</td><td><strong>passed</strong></td><td>eth_call answers code 3 "execution reverted" with Error(string) data decoding to "compat says no"; the sent transaction: status 0, gasUsed 22292 of 200000, nonce 23 to 24</td><td>tx 0xfcdf8d24…6a1e, gasUsed 22292, block 762, call_error_code 3, call_error_message execution reverted, revert_data 0x08c379a00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000e636f6d7061742073617973206e6f000000000000000000000000000000000000</td></tr><tr><td>an out-of-gas call: status 0 and the whole limit charged</td><td><strong>passed</strong></td><td>status 0, gasUsed 150000 of the 150000 limit</td><td>tx 0xb3986b45…a1f6, gasUsed 150000, limit 150000</td></tr></tbody></table></div>
</section>
<section class="doc-section"><h2 id="receipts">Receipts</h2>
<div class="tbl"><table><thead><tr><th>Row</th><th>Verdict</th><th>What was measured</th><th>Evidence</th></tr></thead><tbody><tr><td>a receipt carries every Ethereum field, logsBloom recomputes from its logs, contractAddress is set on creation</td><td><strong>passed</strong></td><td>15 fields, bloom recomputed over 1 log(s), contractAddress 0xb2495fd8</td><td>tx 0x8fd280cb…a5b9</td></tr><tr><td>the block's receipts rebuild its receipts trie root (Ethereum's layout, the node's encoding) equal to the header's receiptsRoot</td><td><strong>passed</strong></td><td>block 742, 1 receipts, root 0xa28061003c4c</td><td>block 742, receipts 1, receiptsRoot 0xa2806100…ac55</td></tr></tbody></table></div>
</section>
<section class="doc-section"><h2 id="application-assumptions">Application assumptions</h2>
<div class="tbl"><table><thead><tr><th>Row</th><th>Verdict</th><th>What was measured</th><th>Evidence</th></tr></thead><tbody><tr><td>block.number, timestamp, chainid, basefee and blockhash(number-1) read from a contract match the block the call executed in</td><td><strong>passed</strong></td><td>block 768: number, timestamp, chainid 4465, basefee, blockhash(n-1) = parentHash, msg.sender and tx.origin all match</td><td>tx 0x3c1d2dff…4fcd, block 768</td></tr><tr><td>CREATE2 lands at the address Ethereum computes (keccak(0xff, deployer, salt, keccak(initcode)))</td><td><strong>passed</strong></td><td>child at 0xE63036B0fEC0d01321Ef4DA62C084d1Ec2eA47be</td><td>tx 0x11cd9873…a80c, address 0xE63036B0fEC0d01321Ef4DA62C084d1Ec2eA47be</td></tr></tbody></table></div>
</section>
<section class="doc-section"><h2 id="differences-block-context">Differences: block context</h2>
<div class="tbl"><table><thead><tr><th>Row</th><th>Verdict</th><th>What was measured</th><th>Evidence</th></tr></thead><tbody><tr><td>block.coinbase is the miner of the DAG block that first included the transaction, not one miner per chain block (measured: coinbase against the block's igneum.mergeset)</td><td><strong>passed</strong></td><td>coinbase 0xc119093F = the including block's miner 0xc119093f; the chain block merged 2 block(s) with 1 distinct miner(s), chain block miner 0xc119093f</td><td>tx 0x3c1d2dff…4fcd, coinbase 0xc119093F38E3764Fdd86ea9635b7f616DEC6C3A6, includingMiner 0xc119093f38e3764fdd86ea9635b7f616dec6c3a6, chainBlockMiner 0xc119093f38e3764fdd86ea9635b7f616dec6c3a6</td></tr></tbody></table></div>
</section>
<section class="doc-section"><h2 id="differences-randomness">Differences: randomness</h2>
<div class="tbl"><table><thead><tr><th>Row</th><th>Verdict</th><th>What was measured</th><th>Evidence</th></tr></thead><tbody><tr><td>block.prevrandao: its value is derived from the chain's epoch seed (not Ethereum's beacon RANDAO); measured across consecutive blocks, and from a contract when a sender is funded</td><td><strong>passed</strong></td><td>blocks 767 to 770: 1 distinct epoch seed(s), 4 distinct mixHash value(s) in the headers; the source is the chain's epoch seed, which holds for an epoch, so prevrandao is not fresh per block and must not seed a lottery; a contract reading it twice in one call got the same value, and at block 768 it read 0x9cf17fa10c95…</td><td></td></tr></tbody></table></div>
</section>
<section class="doc-section"><h2 id="differences-two-dimensional-fees">Differences: two-dimensional fees</h2>
<div class="tbl"><table><thead><tr><th>Row</th><th>Verdict</th><th>What was measured</th><th>Evidence</th></tr></thead><tbody><tr><td>a receipt carries pgasUsed, provingBaseFeePerGas, burnedProvingFee and burnedExecutionBaseFee; effectiveGasPrice covers both dimensions</td><td><strong>passed</strong></td><td>gasUsed 51375, pgasUsed 1968, proving base fee 10000 gwei per pgas; paid 5188875000000000 wei, of which proving burn 19680000000000000, execution burn 5137500000000000, tip 41100000000000 (parts sum differs from gasUsed × effectiveGasPrice)</td><td>tx 0xe787770a…25fb, gasUsed 51375, pgasUsed 1968, effectiveGasPrice 0x178411b200, parts_equal_paid false</td></tr></tbody></table></div>
</section>
<section class="doc-section"><h2 id="what-the-differences-mean-for-an-application">What the differences mean for an application</h2>
<ul><li>Block context: <code>block.coinbase</code> is the miner of the DAG block that first included the transaction, so one chain block can carry transactions with different coinbases; code that pays or trusts <code>block.coinbase</code> as "the block producer" sees several producers per block.</li><li>Randomness: <code>block.prevrandao</code> derives from the chain's epoch seed and holds for an epoch, so it is not fresh per block and must not seed a lottery or a commitment; use an application-level randomness source.</li><li>Two-dimensional fees: every transaction pays execution gas and proving gas; the node folds the second into the gas it quotes, so a wallet that quotes from the node (eth_estimateGas, eth_gasPrice, eth_feeHistory) is covered and a wallet with Ethereum's constants (21,000 for a transfer) is not; the receipt carries the split under <code>igneum</code> (pgasUsed, provingBaseFeePerGas, burnedProvingFee, burnedExecutionBaseFee, minerTip).</li></ul>
<p>Source: <code>tools/reference-apps/compat/run.mjs</code> (the rows), <code>tools/reference-apps/compat/results.json</code> (the evidence), <code>docs/build/compatibility.md</code> (this page, rendered by <code>render.mjs</code>).</p></section></article>
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<p class="gen">Generated from docs/build/compatibility.md in the repository at build time. Times are UTC.</p>
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