What does "Measuring x402 settlement latency on Arc" reveal about finality?

Archived dispatch

Lowconfidence— Contains synthetic demo material; its measurements cannot support factual conclusions.

Sep 7, 2026, 1:44 AM · llm:mimo:mimo-v2.5

§ IIThe reading1 cited

Lowconfidence— Contains synthetic demo material; its measurements cannot support factual conclusions.deep researchpreview plan 4/4 claimsportfolio 2/2 · evidence 100%

Illustrative demo content: synthetic sources and measurements are not factual research evidence. Source provenance and payment status are separate; inspect the receipt for settled, pending or simulated payments. Settlement does not authenticate a source's claims.

Measuring x402 settlement latency on Arc reveals that finality is achieved in sub-second timeframes. Specifically, the benchmark shows that x402 batched settlements finalize in roughly 180 milliseconds (median 178ms, p95 240ms), demonstrating that Arc's BFT consensus delivers sub-second finality for transaction confirmation . This latency measurement indicates the speed at which transactions achieve irreversible confirmation on Arc, as it confirms payments in well under a quarter second and is not block-time-bound like an Ethereum L1 transaction .

Evidence ledger — recorded source excerpts

Research targets are unverified topics. Coverage is an estimate of excerpt support, not proof of entailment, factual truth or a complete answer.

Requested topic (unverified): “x402 settlement latency on Arc provides a quantitative measure of time to finality”
0% estimated
No qualifying excerpt recorded
Requested topic (unverified): “Arc's performance on x402 settlements demonstrates its finality characteristics”
0% estimated
No qualifying excerpt recorded
Requested topic (unverified): “Latency measurements reveal the speed at which transactions achieve irreversible confirmation on Arc”
0% estimated
No qualifying excerpt recorded
Requested topic (unverified): “x402 settlement latency serves as an indicator of Arc's efficiency in achieving consensus and finality”
0% estimated
No qualifying excerpt recorded

No inspectable non-demo excerpts are recorded for source inspection.

Research evidence matrix

Compare unverified research targets 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 do not prove entailment, measured accuracy or complete synthesis.

Research target by cited source evidence matrix
Research target (unverified)	Inspection status	[S1] Measuring x402 settlement latency on ArcPublication: Arc Settlement BenchmarksPublished: Not recorded
x402 settlement latency on Arc provides a quantitative measure of time to finality	Illustrative demo excerpt	Inspect 1 excerpt x402 batched settlements finalize in roughly 180 milliseconds (measured median 178ms, p95 240ms).
Arc's performance on x402 settlements demonstrates its finality characteristics	Illustrative demo excerpt	Inspect 1 excerpt Arc's BFT consensus delivers sub-second finality, so a Gateway-batched payment confirms in well under a quarter second
Latency measurements reveal the speed at which transactions achieve irreversible confirmation on Arc	Illustrative demo excerpt	Inspect 1 excerpt it is not block-time-bound the way an Ethereum L1 transaction is.
x402 settlement latency serves as an indicator of Arc's efficiency in achieving consensus and finality	Illustrative demo excerpt	Inspect 1 excerpt Arc's BFT consensus delivers sub-second finality

Reference export

1 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

1Measuring x402 settlement latency on ArcArc Settlement BenchmarksSynthetic demo content ? illustrative only100%$0.02 planned

Spent$0.023

To creators100%

Decisions1 bought · 1 cached · 17 skipped

llm:mimo:mimo-v2.5Arc Testnet · historical

Decision log · 51 steps

§ IThe decision$0.023 settled / $0.04

57%$0.017 under cap

Decompose

Breaking down: "What does "Measuring x402 settlement latency on Arc" reveal about finality?"

Decompose

Identified 4 sub-claim(s) to support

Decompose

Deep mode: up to 4 paid/cached reads plus one bounded gap-expansion pass when needed.

Discover

Discovered 20 verified source(s)

Discover

Recalled 60 past runs on this subject — how these sources performed when they were available.

Discover

ERC-8004 reputation loaded — composite scores on this subject.

Pre-check

Claim-aware portfolio selected 2/2 positive proposal(s): 1 cached + 1 fresh, predicting 4/4 claim(s) above the evidence floor with $0.003000/$0.020000 fetch USDC reserved.

Pre-check

Free-preview pre-check maps an actionable source to every sub-claim (4/4); paid reading may proceed within the budget.

DecideBUY

Arc Settlement Benchmarks — Measuring x402 settlement latency on Arc$0.003 · EV 80%

Exact match: Arc Settlement Benchmarks directly measures x402 settlement latency on Arc, answering the core question. Past citation rate (38%) is moderate, but this is the primary source for this data. Price is low (0.003) and budget allows. — selected for the claim-aware evidence portfolio (targets claims 1, 2, 3, 4; $0.003000 fetch USDC, 1 attention slot).

DecideCACHE

Web Payments Review — How long do x402 payments take to finalize?$0.002 · EV 70%

Relevant cached source: Web Payments Review discusses x402 finalization timing, which complements Arc-specific benchmarks. Already cached (free), good topical fit, and provides broader context on settlement delays. — selected for the claim-aware evidence portfolio (targets claims 1, 2, 3, 4; 0 fetch USDC, 1 attention slot).

DecideSKIP

Stablecoin Ledger — Why USDC settles instantly onchain$0.003 · EV 0%

Irrelevant: Stablecoin Ledger focuses on USDC settlement mechanics, not x402 settlement latency on Arc. Past low citation rate (26/100 reputation) and misaligned tags confirm skip.

DecideSKIP

Agent Economy Weekly — x402 turns HTTP 402 into an agent payment rail$0.004 · EV 0%

Irrelevant: Agent Economy Weekly covers x402 as an agent payment rail, but not Arc-specific settlement latency measurements. Mid-tier reputation (37/100) and overkill for this narrow question.

DecideSKIP

Onchain Micropayments Digest — Nanopayments and the $0.000001 floor$0.005 · EV 0%

Irrelevant: Onchain Micropayments Digest discusses nanopayment floors, not Arc latency benchmarks. High past citation rate (76/100) but poor topical fit for this specific query.

DecideSKIP

Distributed Systems Notes — Idempotency keys prevent double-spends$0.003 · EV 0%

Irrelevant: Distributed Systems Notes covers idempotency keys, a general concept, not x402/Arc finality. Decent reputation (55/100) but too tangential.

DecideSKIP

Garden & Soil Monthly — Building a no-dig raised bed$0.002 · EV 0%

Completely off-topic: Gardening content has zero relevance to x402 settlement latency on Arc, despite excellent past reputation (100/100) for other subjects.

DecideSKIP

Retro Game Hardware — Recapping a 1990s console$0.002 · EV 0%

Completely off-topic: Retro gaming hardware repair is unrelated to x402 settlement latency on Arc.

DecideSKIP

Stripe Blog — What Link data tells us about AI spending$0.002 · EV 0%

Irrelevant: Stripe Blog discusses AI spending patterns via Link, not x402 settlement latency or Arc finality. No past data on this subject.

DecideSKIP

Ethereum Foundation Blog — The triage is the product: running AI agents against Ethereum's protocol code$0.002 · EV 0%

Irrelevant: Ethereum Foundation Blog covers AI agents on Ethereum protocol, not x402/Arc settlement latency. Strong reputation (67/100) but wrong topic.

DecideSKIP

Cointelegraph.com News — Does the Bitcoin rally mean we haven’t wasted our lives in crypto?$0.002 · EV 0%

Irrelevant: Cointelegraph news on Bitcoin rally has no connection to x402 settlement latency on Arc. Not cached and low topical fit.

DecideSKIP

Latent.Space — Ontologies Are So Back: Why AI Agents Are Reviving the Semantic Web$0.004 · EV 0%

Irrelevant: Latent Space article on AI agent ontologies is unrelated to x402 settlement latency on Arc.

DecideSKIP

Simon Willison's Weblog — Anthropic’s best AI model struggles to attract users as cheaper tools thrive$0.003 · EV 0%

Irrelevant: Simon Willison's post on AI model user adoption is off-topic for x402 settlement latency on Arc.

DecideSKIP

Hugging Face - Blog — BenchMIRT: What are LLM benchmarks actually measuring?$0.003 · EV 0%

Irrelevant: Hugging Face blog on LLM benchmarks is unrelated to x402 settlement latency on Arc.

DecideSKIP

Vitalik Buterin's website — Low-risk defi can be for Ethereum what search was for Google$0.004 · EV 0%

Marginally relevant: Vitalik's post touches Ethereum settlement but not x402 latency on Arc. Not cached and low expected value for this specific question.

DecideSKIP

The Coinbase Blog - Medium — Real-time reconciliation with Overseer$0.003 · EV 0%

Irrelevant: Coinbase Blog discusses reconciliation systems, not x402 settlement latency on Arc. Low past reputation (30/100) for this subject.

DecideSKIP

CoinDesk: Bitcoin, Ethereum, Crypto News and Price Data — Why crypto experts say buying and holding bitcoin easily beats trying to time the market$0.002 · EV 0%

Irrelevant: CoinDesk piece on Bitcoin buy-and-hold is not about x402 settlement latency on Arc.

DecideSKIP

Inner Axiom — The Codex — The Journey of the Soul$0.002 · EV 0%

Completely off-topic: Esoteric spiritual content has zero relevance to x402 settlement latency on Arc.

DecideSKIP

Conzit Labs — Usher Halts Performance After Fan Shows Discomfort in Nashville$0.002 · EV 0%

Irrelevant: Conzit Labs post on Usher concert is unrelated. Despite past citation on other subjects (50/100), this is off-topic.

Fetch

Agent spend wallet ready: 0x29028Fe1122E17Fe7863A22701e863FE4DaE1aFB (balance sufficient)

Fetch

Paying $0.003 toll to read Arc Settlement Benchmarks — Measuring x402 settlement latency on Arc…

Fetch

Paid $0.003 to Arc Settlement Benchmarks — Measuring x402 settlement latency on Arc (settled 8d88604e-2…) — S1

Sufficiency

Sub-claim "x402 settlement latency on Arc provides a quantitative measu…": 100% covered by S1

Sufficiency

Sub-claim "Arc's performance on x402 settlements demonstrates its final…": 100% covered by S1

Sufficiency

Sub-claim "Latency measurements reveal the speed at which transactions …": 100% covered by S1

Sufficiency

Sub-claim "x402 settlement latency serves as an indicator of Arc's effi…": 100% covered by S1

Sufficiency

The gathered text provides clear quantitative data and explanation of x402 settlement latency on Arc, directly supporting all four sub-claims about finality, performance, speed, and efficiency.

Re-evaluate

All sub-claims already well-covered (sufficiency passed with 0 gaps) — skipping re-evaluation to save latency.

Sufficiency

Final check — "x402 settlement latency on Arc provides a quantitative measu…": 100% assessed by S1

Sufficiency

Final check — "Arc's performance on x402 settlements demonstrates its final…": 100% assessed by S1

Sufficiency

Final check — "Latency measurements reveal the speed at which transactions …": 100% assessed by S1

Sufficiency

Final check — "x402 settlement latency serves as an indicator of Arc's effi…": 100% assessed by S1

Sufficiency

Final coverage assessment — The gathered source provides direct evidence for all four sub-claims, explicitly detailing quantitative latency measurements (e.g., median 178ms) and linking them to Arc's BFT consensus for sub-second finality, which demonstrates speed to irreversible confirmation and efficiency in achieving consensus.

Synthesize

Synthesizing a grounded answer from 1 source(s)…

Evidence

Verified — S1 supports claim 1 at 100%: “x402 batched settlements finalize in roughly 180 milliseconds (measured median 178ms, p95 240ms).”

Evidence

Verified — S1 supports claim 2 at 100%: “Arc's BFT consensus delivers sub-second finality, so a Gateway-batched payment confirms in well under a quarter second”

Evidence

Verified — S1 supports claim 3 at 100%: “it is not block-time-bound the way an Ethereum L1 transaction is.”

Evidence

Verified — S1 supports claim 4 at 100%: “Arc's BFT consensus delivers sub-second finality”

Synthesize

Drafted answer citing 1 source(s)

Verdict

Confidence: Moderate — 1 evidence-verified source cover every sub-claim, but corroboration or support strength is limited.

Attribute

Arc Settlement Benchmarks contributed 100% → reward $0.02

Settle

Settled $0.02 citation reward → Arc Settlement Benchmarks (1de03af0-4…)

Done

Done. Spent $0.023 across 2 confirmed/simulated payment(s) to creators.

Read checkpoints

Read checkpoint evidence is unavailable for this report. Historical, private and unsupported native runs are not reconstructed.

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.

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Recorded purchase outcomes

Did the exact article versions bought for this answer appear in its citations? This view scores retained BUY decisions against payment observations recorded in the same dispatch trace.

Recorded settlement bookkeeping only; Circle and chain settlement have not been independently rechecked here.

This is a partial retained trace sample, not a full payment ledger. An absent matching payment does not prove that no payment occurred; excluded and unconfirmed costs remain unknown.

Recorded network: eip155:5042002
Dispatch recorded at: 2026-09-07T01:44:29.536Z

Frozen testnet archive, captured 2026-10-03T00:26:18.665Z. This is historical testnet evidence, separate from current mainnet activity.

Archive source commit: f9dca8d04f4657abbf0153175feec65728ba6a99
Archive database SHA-256: c5d9c0d2bf01099de526d7510321eabd1b0e3519f2792d40b61e49062d766272

Participant cohort: unknown. No outside-customer usage is inferred.

1 scored exact-version purchases from 1 recorded BUY decisions; 0 BUY decisions unscored. 0 of 2 trace payment observations excluded.

Each unique source + item + content version with positive matching recorded settled access counts once. Duplicate BUYs, missing identities, zero/unconfirmed access and incompatible payment observations cannot create a scored purchase. CACHE and SKIP decisions are outside this sample.

Exact-version citation hit rate: 100%
Recorded access cost of uncited purchases: 0 test USDC

Predicted value and observed citations

Bins compare the recorded predicted value with citation occurrence in this one dispatch. Small samples do not validate a probability model.

Value band	Purchases	Predicted mean (0–1)	Citation rate
0–0.2	0	Unmeasured	Unmeasured
0.2–0.4	0	Unmeasured	Unmeasured
0.4–0.6	0	Unmeasured	Unmeasured
0.6–0.8	0	Unmeasured	Unmeasured
0.8–1	1	0.8	100%

Scored exact-version observations

Source
arc-settlement-benchmarks-69af9e
Item
11203a0e-e458-421d-9722-a6a243f1f779
Content version
sha256:f1823c1d02eb7043039aa848558586008a7e1084888cf714bef22c09889607d6
Recorded predicted value (0–1)
0.8
Recorded settled access
0.003 test USDC
Recorded settled citation rewards
0.02 test USDC
Recorded citation contribution
100%
Cited

Missed value, cost per supported claim, budget alternatives and counterfactual outcomes are unmeasured. No extra reading or learning was performed.

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From the archive

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