What is a useful comparison for understanding Arc settlement timing versus Ethereum L1 block timing, based on available evidence?
10/2/2026, 5:41:52 PM · llm:deepseek:deepseek-v4-flash + heuristic (fallback from llm:cloudflare:@cf/meta/llama-3.3-70b-instruct-fp8-fast) (fallback from llm:mimo:mimo-v2.5) on 1 step
> ⚠ Low confidence — the final assessment does not establish a complete supported answer for every requested part within budget. Treat this as provisional.
The supplied passages do not contain a direct, side-by-side comparison of Arc settlement timing against Ethereum L1 block timing. What they do support is a comparison of finality models and timing scales: Arc is described as using Malachite BFT with deterministic, sub-second finality , while Ethereum L1 is characterized as relying on probabilistic finality requiring multiple attestation rounds, and Ethereum L2 rollups are said to inherit Ethereum's 12-minute finality for full settlement . A useful comparison, based on this evidence, is therefore Arc's deterministic sub-second finality versus Ethereum L1's probabilistic, multi-round finality (with L2s inheriting a 12-minute full-settlement horizon). The sources do not state Ethereum L1's block time directly, so any comparison framed specifically as "Arc settlement timing versus Ethereum L1 block timing" is not fully answered by the available evidence.
Evidence ledger — supporting quotes
What is a useful comparison for understanding Arc settlement timing versus Ethereum L1 block timing, based on available evidence?
60%“(testnet)FinalityDeterministic, sub-secondEVM compatibilityYes — with some unique differencesChain ID5042002 (testnet) The most distinctive feature of Arc is that USDC serves as the native gas token.” [S2] Arc Network: Circle's Layer‑1 Blockchain and the Economic OS for Stablecoin Finance
“Ethereum rollups like Arbitrum and Base confirm transactions in under a second but inherit Ethereum's 12-minute finality for full settlement.” [S3] Blockchain Speed Comparison: TPS and Finality Across 15+ Chains
“Arc implements deterministic finality through its Malachite consensus engine.Malachite is a Byzantine Fault Tolerant engine based on the Tendermint algorithm, delivering finality in under one second with no risk of transaction reversals.” [S4] What Is Arc Blockchain? Circle's Layer-1 Network for Stablecoin Finance
Research evidence matrix
Compare research claims with cited sources and inspect recorded excerpts. An empty cell means no inspectable excerpt was recorded; it does not establish whether a claim is true, false, or disputed. Coverage and agent confidence are not measured accuracy.
| Research claim | Inspection status | [S2] Arc Network: Circle's Layer‑1 Blockchain and the Economic OS for Stablecoin FinancePublication: crouton.digitalPublished: Not recorded | [S3] Blockchain Speed Comparison: TPS and Finality Across 15+ ChainsPublication: spark.moneyPublished: Not recorded | [S4] What Is Arc Blockchain? Circle's Layer-1 Network for Stablecoin FinancePublication: eco.comPublished: Not recorded |
|---|---|---|---|---|
| What is a useful comparison for understanding Arc settlement timing versus Ethereum L1 block timing, based on available evidence? | Recorded excerpt | Inspect 1 excerpt(testnet)FinalityDeterministic, sub-secondEVM compatibilityYes — with some unique differencesChain ID5042002 (testnet) The most distinctive feature of Arc is that USDC serves as the native gas token. | Inspect 1 excerptEthereum rollups like Arbitrum and Base confirm transactions in under a second but inherit Ethereum's 12-minute finality for full settlement. | Inspect 1 excerptArc implements deterministic finality through its Malachite consensus engine.Malachite is a Byzantine Fault Tolerant engine based on the Tendermint algorithm, delivering finality in under one second with no risk of transaction reversals. |
Reference export
3 article references. Recorded titles, links and dates; observed scholarly records also include supplied authors, DOI and journal metadata with read limits. Review metadata before using in a paper. Import RIS into Zotero with File → Import.
Cited sources and references
- 2Arc Network: Circle's Layer‑1 Blockchain and the Economic OS for Stablecoin Financecrouton.digitalFree public reference · no creator payment · extracted html text35%
- 3Blockchain Speed Comparison: TPS and Finality Across 15+ Chainsspark.moneyFree public reference · no creator payment · extracted html text40%
- 4What Is Arc Blockchain? Circle's Layer-1 Network for Stablecoin Financeeco.comFree public reference · no creator payment · extracted html text25%
Decision log · 72 steps
Breaking down: "What is a useful comparison for understanding Arc settlement timing versus Ethereum L1 block timing, based on available evidence?"
Identified 1 research target(s) to investigate; these are not established facts
Deep mode: up to 4 paid/cached/public reads plus one bounded gap-expansion pass when needed.
Web search: 1/1 planned queries attempted, 1 succeeded, 10 public page previews, 0 unavailable queries. Snippets are discovery only. Public reads spend no USDC; model and service operating costs remain separate.
Discovered 21 verified creator source(s) and 15 free public reference(s)
Recalled 60 past runs on this subject — how these sources performed when they were available.
ERC-8004 reputation loaded — composite scores on this subject.
Claim-aware portfolio (exhaustive; bounded selection, not a claim of global optimality) selected 4/9 positive proposal(s): 4 free/cache selections + 0 paid fresh selections, predicting 1/1 claim(s) above the evidence floor with $0.000000/$0.015000 fetch USDC reserved.
Free-preview pre-check maps an actionable source to every sub-claim (1/1); paid reading may proceed within the budget.
Strong topical match on arc, settlement, ethereum, based, addresses sub-claim 1; worth the 0 USDC toll. - free public original-page READ selection (not a cache hit); no purchase or creator reward. — selected for the claim-aware evidence portfolio (targets claim 1; 0 fetch USDC, 1 attention slot).
Strong topical match on useful, comparison, arc, ethereum, addresses sub-claim 1; worth the 0 USDC toll. - free public original-page READ selection (not a cache hit); no purchase or creator reward. — selected for the claim-aware evidence portfolio (targets claim 1; 0 fetch USDC, 1 attention slot).
Strong topical match on arc, settlement, ethereum, addresses sub-claim 1; worth the 0 USDC toll. - free public original-page READ selection (not a cache hit); no purchase or creator reward. — selected for the claim-aware evidence portfolio (targets claim 1; 0 fetch USDC, 1 attention slot).
Strong topical match on comparison, ethereum, block, addresses sub-claim 1; worth the 0 USDC toll. - free public original-page READ selection (not a cache hit); no purchase or creator reward. — selected for the claim-aware evidence portfolio (targets claim 1; 0 fetch USDC, 1 attention slot).
Weak match (no key terms); not worth 0 USDC. - free public feed reference; no purchase or creator reward.
Already cached and still relevant (matches based); reuse for free instead of paying again. - free public feed reference; no purchase or creator reward. — the free-preview coverage check could not connect this source to any sub-claim, so no toll is authorized.
Weak match (no key terms); not worth 0 USDC. - free public feed reference; no purchase or creator reward.
Weak match (no key terms); not worth 0 USDC. - free public feed reference; no purchase or creator reward.
Weak match (no key terms); not worth 0 USDC. - free public feed reference; no purchase or creator reward.
Strong topical match on arc, settlement, addresses sub-claim 1; worth the 0 USDC toll. - free public original-page READ selection (not a cache hit); no purchase or creator reward. — the claim-aware portfolio chose a stronger, less redundant set inside the 4-source attention and $0.015000 fetch-budget caps, so this proposal stays unspent.
Strong topical match on arc, ethereum, addresses sub-claim 1; worth the 0 USDC toll. - free public original-page READ selection (not a cache hit); no purchase or creator reward. — the claim-aware portfolio chose a stronger, less redundant set inside the 4-source attention and $0.015000 fetch-budget caps, so this proposal stays unspent.
Weak match (only arc); not worth 0 USDC. - free public original-page READ selection (not a cache hit); no purchase or creator reward.
Strong topical match on arc, ethereum, addresses sub-claim 1; worth the 0 USDC toll. - free public original-page READ selection (not a cache hit); no purchase or creator reward. — the claim-aware portfolio chose a stronger, less redundant set inside the 4-source attention and $0.015000 fetch-budget caps, so this proposal stays unspent.
Strong topical match on ethereum, block, addresses sub-claim 1; worth the 0 USDC toll. - free public original-page READ selection (not a cache hit); no purchase or creator reward. — the claim-aware portfolio chose a stronger, less redundant set inside the 4-source attention and $0.015000 fetch-budget caps, so this proposal stays unspent.
Weak match (only settlement); not worth 0 USDC. - free public original-page READ selection (not a cache hit); no purchase or creator reward.
Already cached and still relevant (matches settlement); reuse for free instead of paying again. — the free-preview coverage check could not connect this source to any sub-claim, so no toll is authorized.
Weak match (no key terms); not worth 0.004 USDC.
Already cached and still relevant (matches settlement); reuse for free instead of paying again. — the free-preview coverage check could not connect this source to any sub-claim, so no toll is authorized.
Weak match (no key terms); not worth 0.003 USDC.
Weak match (no key terms); not worth 0.002 USDC.
Weak match (no key terms); not worth 0.002 USDC.
Already cached and still relevant (matches evidence); reuse for free instead of paying again. — the free-preview coverage check could not connect this source to any sub-claim, so no toll is authorized.
Already cached and still relevant (matches ethereum); reuse for free instead of paying again. — the free-preview coverage check could not connect this source to any sub-claim, so no toll is authorized.
Already cached and still relevant (matches ethereum, block); reuse for free instead of paying again. — cached content is free, but this read does not clear the attention gate (EV 0.17, minimum 0.45, with a required claim target).
Weak match (no key terms); not worth 0.004 USDC.
Weak match (no key terms); not worth 0.003 USDC.
Weak match (no key terms); not worth 0.003 USDC.
Strong topical match on settlement, ethereum, addresses sub-claim 1; worth the 0.004 USDC toll. — the claim-aware portfolio chose a stronger, less redundant set inside the 4-source attention and $0.015000 fetch-budget caps, so this proposal stays unspent.
Weak match (no key terms); not worth 0.003 USDC.
Weak match (no key terms); not worth 0.002 USDC.
Already cached and still relevant (matches settlement, ethereum); reuse for free instead of paying again. — cached content is free, but this read does not clear the attention gate (EV 0.17, minimum 0.45, with a required claim target).
Weak match (no key terms); not worth 0.002 USDC.
Weak match (only understanding); not worth 0.002 USDC.
Already cached and still relevant (matches arc, settlement); reuse for free instead of paying again. — cached content is free, but this read does not clear the attention gate (EV 0.17, minimum 0.45, with a required claim target).
Already cached and still relevant (matches settlement, timing); reuse for free instead of paying again. — cached content is free, but this read does not clear the attention gate (EV 0.17, minimum 0.45, with a required claim target).
Already cached and still relevant (matches evidence); reuse for free instead of paying again. — the free-preview coverage check could not connect this source to any sub-claim, so no toll is authorized.
READ Arc Blockchain Explained: Everything You Need to Know About Circle’s Layer 1 - selected original public page, 0 USDC; not a cache hit.
Public page unavailable (transport-unavailable); no evidence admitted. Continuing research.
READ Bitcoin, Ethereum, Solana, Circle Arc, Base and ArcBlock - selected original public page, 0 USDC; not a cache hit.
Read extracted public text from https://www.arcblock.io/en/learn/compare-blockchain-designs/ - S1; quote matching establishes source grounding, not fact verification.
READ What Is Arc Network? Circle's Layer-1 Blockchain for Stablecoin Finance - selected original public page, 0 USDC; not a cache hit.
Read extracted public text from https://crouton.digital/blog/arc-network-circle-s-layer-1-blockchain-and-the-economic-os-for-stablecoin-finance - S2; quote matching establishes source grounding, not fact verification.
READ Blockchain Speed Comparison: TPS and Finality Across 15+ Chains | Spark - selected original public page, 0 USDC; not a cache hit.
Read extracted public text from https://www.spark.money/tools/blockchain-speed-comparison - S3; quote matching establishes source grounding, not fact verification.
Sub-claim "What is a useful comparison for understanding Arc settlement…": 50% covered by S2, S3 — S2 gives Arc's timing figures (block time ~0.48s testnet; deterministic sub-second finality), and S3 supplies Ethereum L1 timing context (L2s inherit Ethereum's 12-minute finality; block time vs finality distinction). Together these support a comparison of Arc's sub-second deterministic finality against Ethereum L1's ~12-minute finality/12s block cadence. However, no source explicitly frames a direct Arc-vs-Ethereum-L1 timing comparison, and S3's 12-minute figure is stated for L2 finality rather than Ethereum L1 block time itself, leaving the requested comparison only partially answered.
Coverage is below 0.5 for the explicit Arc-vs-Ethereum-L1 timing comparison. Two free skipped sources directly fill the gap: the Arc blockchain support page contrasts Arc's deterministic sub-second finality with Ethereum's probabilistic confirmation, and the Ethereum average block time page provides Ethereum L1 block timing data. Both are free and fit the remaining budget.
READ original public page https://eco.com/support/en/articles/12160003-what-is-arc-blockchain-circle-s-layer-1-network-for-stablecoin-finance, 0 USDC - S4
Attention budget reached 4 source(s); stopping gap expansion.
Final check — "What is a useful comparison for understanding Arc settlement…": 60% assessed by S2, S3, S4
Final coverage assessment — The question asks for a useful comparison for understanding Arc settlement timing versus Ethereum L1 block timing. The sources provide direct timing evidence: Arc has deterministic sub-second finality (~0.48s testnet block time, finality under one second), while Ethereum L1 has ~12-minute finality and L2s inherit that 12-minute finality. S2 and S4 directly state Arc's sub-second/deterministic finality; S3 states Ethereum's 12-minute finality and explains L2s inherit it. Together these support a comparison of Arc's sub-second deterministic settlement versus Ethereum L1's ~12-minute finality. However, no source explicitly frames a single 'useful comparison' sentence contrasting Arc settlement timing with Ethereum L1 block timing, and Ethereum L1 block time itself (12 seconds) is not directly stated—only finality (12 minutes). The comparison is inferable but not explicitly provided as a packaged comparison. The assessment does not establish a complete supported answer for every requested part.
Synthesizing a grounded answer from 4 source(s)…
Relevance review returned; only checked excerpts can retain support, and review cannot raise it.
Below support/reward gate — S2 supports claim 1 at 30%: “Table 1: Arc Network Technical Specifications ComponentDetailsConsensusMalachite BFT (acquired from Informal Systems)ExecutionReth (Rust Eth…”
Verified public reference (no creator reward) — S2 supports claim 1 at 40%: “(testnet)FinalityDeterministic, sub-secondEVM compatibilityYes — with some unique differencesChain ID5042002 (testnet) The most distinctive …”
Below support/reward gate — S3 supports claim 1 at 20%: “Proof-of-Stake (Ethereum, Cardano) replaces mining with validator staking, enabling faster block times but still requiring multiple rounds o…”
Verified public reference (no creator reward) — S3 supports claim 1 at 70%: “Ethereum rollups like Arbitrum and Base confirm transactions in under a second but inherit Ethereum's 12-minute finality for full settlement…”
Verified public reference (no creator reward) — S4 supports claim 1 at 40%: “Arc implements deterministic finality through its Malachite consensus engine.Malachite is a Byzantine Fault Tolerant engine based on the Te…”
Drafted answer citing 3 source(s)
Confidence: Low — the final assessment does not establish a complete supported answer for every requested part.
crouton.digital contributed 35% - free public reference; reward share withheld
spark.money contributed 40% - free public reference; reward share withheld
eco.com contributed 25% - free public reference; reward share withheld
Done. Spent $0 across 0 confirmed/simulated payment(s) to creators.
Portable research receipt
Take the evidence trail with you
One deterministic JSON bundle binds the answer, visible decisions, exact article versions, claim evidence and a Circle-settlement snapshot under SHA-256. Retain the digest to detect later changes; the self-check is not a publisher or Keryx signature.
Carries this dispatch’s question as context — never its answer. The next dispatch is read from sources bought for it.