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What is USDC?

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

9/20/2026, 5:47:38 PM · llm:deepseek:deepseek-v4-flash + heuristic (fallback from llm:mimo:mimo-v2.5) on 1 step

§ IIThe reading1 cited
Lowconfidence— Contains synthetic demo material; its measurements cannot support factual conclusions.deep researchpreview plan 1/1 claimsportfolio 1/4 · evidence 0%

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.

USDC is a fully-reserved dollar stablecoin that settles peer-to-peer onchain in seconds . Because that settlement is final and programmable, it removes the multi-day delays of card networks and ACH . The provided sources do not otherwise define USDC or describe its issuer or governance; the Coinbase passage concerns proprietary trading and does not address USDC, and the Cointelegraph passage only notes that Tazapay extends Circle's USDC payments reach.

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.

  1. Requested topic (unverified): “What is USDC?”

    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[S2] Why USDC settles instantly onchainPublication: Stablecoin LedgerPublished: Not recorded
What is USDC?Illustrative demo excerpt
Inspect 2 excerpts
USDC is a fully-reserved dollar stablecoin that settles peer-to-peer onchain in seconds.
Because settlement is final and programmable, it removes the multi-day delays of card networks and ACH.

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

Spent$0.03
To creators100%
Decisions0 bought · 1 cached · 20 skipped
llm:deepseek:deepseek-v4-flash + heuristic (fallback from llm:mimo:mimo-v2.5) on 1 stepArc Testnet · historical
Decision log · 49 steps
§ IThe decision$0.025 settled / $0.05
50%$0.025 under cap
Decompose

Breaking down: "What is USDC?"

Decompose

Identified 1 research target(s) to investigate; these are not established facts

Decompose

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

Discover

Discovered 21 verified source(s)

Discover

Recalled 46 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 1/4 positive proposal(s): 1 cached + 0 fresh, predicting 1/1 claim(s) above the evidence floor with $0.000000/$0.025000 fetch USDC reserved.

Pre-check

Free-preview pre-check maps an actionable source to every sub-claim (1/1); paid reading may proceed within the budget.

DecideCACHE
The Coinbase Blog - Medium — In response to the Wall Street Journal$0.003 · EV 100%

Already cached and still relevant (matches usdc); reuse for free instead of paying again. — selected for the claim-aware evidence portfolio (targets claim 1; 0 fetch USDC, 1 attention slot).

DecideSKIP
Stablecoin Ledger — Why USDC settles instantly onchain$0.003 · EV 100%

Already cached and still relevant (matches usdc); reuse for free instead of paying again. — the claim-aware portfolio chose a stronger, less redundant set inside the 4-source attention and $0.025000 fetch-budget caps, so this proposal stays unspent.

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

Weak match (no key terms); not worth 0.004 USDC.

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

Weak match (no key terms); not worth 0.005 USDC.

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

Weak match (no key terms); not worth 0.003 USDC.

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

Weak match (no key terms); not worth 0.002 USDC.

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

Weak match (no key terms); not worth 0.002 USDC.

DecideSKIP
Stripe Blog — Rethinking risk in the age of AI$0.002 · EV 0%

Weak match (no key terms); not worth 0.002 USDC.

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

Weak match (no key terms); not worth 0.002 USDC.

DecideSKIP
Cointelegraph.com News — Circle to acquire Tazapay to expand USDC cross-border payments$0.002 · EV 100%

Already cached and still relevant (matches usdc); reuse for free instead of paying again. — the claim-aware portfolio chose a stronger, less redundant set inside the 4-source attention and $0.025000 fetch-budget caps, so this proposal stays unspent.

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

Weak match (no key terms); not worth 0.004 USDC.

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

Weak match (no key terms); not worth 0.003 USDC.

DecideSKIP
Hugging Face - Blog — Give Your Coding Agents a Memory You Own$0.003 · EV 0%

Weak match (no key terms); not worth 0.003 USDC.

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

Weak match (no key terms); not worth 0.004 USDC.

DecideSKIP
Decrypt — Putin Signs Russia's First Crypto Law: Trading Is Legal, Payments Stay Banned$0.002 · EV 0%

Weak match (no key terms); not worth 0.002 USDC.

DecideSKIP
CoinDesk: Bitcoin, Ethereum, Crypto News and Price Data — Crypto Long & Short: Inside the 300-to-1 onchain gap between the dollar and euro$0.002 · EV 0%

Weak match (no key terms); not worth 0.002 USDC.

DecideSKIP
Inner Axiom — The Codex — ISIS: The Godess, From An Esoteric Perspective$0.002 · EV 0%

Weak match (no key terms); not worth 0.002 USDC.

DecideSKIP
Conzit Labs — Videographer's Equipment Damaged in Onstage Incident with Artist$0.002 · EV 0%

Weak match (no key terms); not worth 0.002 USDC.

DecideSKIP
Arc Settlement Benchmarks — Measuring x402 settlement latency on Arc$0.003 · EV 0%

Weak match (no key terms); not worth 0.003 USDC.

DecideSKIP
Web Payments Review — How long do x402 payments take to finalize?$0.002 · EV 0%

Weak match (no key terms); not worth 0.002 USDC.

DecideSKIP
Keryx Engineering (first-party) — Recovering a Keryx paid research job$0.002 · EV 100%

Already cached and still relevant (matches usdc); reuse for free instead of paying again. — the claim-aware portfolio chose a stronger, less redundant set inside the 4-source attention and $0.025000 fetch-budget caps, so this proposal stays unspent.

Fetch

Agent spend wallet ready: 0x29028Fe1122E17Fe7863A22701e863FE4DaE1aFB (balance sufficient)

Fetch

Reused cached The Coinbase Blog - Medium — In response to the Wall Street Journal (free) — S1

Re-evaluate

Sub-claim "What is USDC?": 10% covered — The only gathered passage (S1) is from a Coinbase blog post responding to the Wall Street Journal about proprietary trading; it never mentions or defines USDC. No supplied passage provides any answer to what USDC is. The skipped previews only reference USDC tangentially (e.g., cross-border payments, onchain settlement) without defining it.

Re-evaluate

Coverage for the sole sub-claim is 0.1 (topical context only, no definition). Affordable skipped sources that could partially fill the gap: 'Stablecoin Ledger — Why USDC settles instantly onchain' ($0.003) and 'Cointelegraph — Circle to acquire Tazapay to expand USDC cross-border payments' ($0.002), both within the $0.025 remaining budget. These are the only skipped items plausibly relevant to USDC; neither is guaranteed to give a full definition, but they are the best available low-cost options.

Re-evaluate

Filling gap — buying Stablecoin Ledger — Why USDC settles instantly onchain ($0.003)…

Re-evaluate

Paid $0.003 to Stablecoin Ledger — Why USDC settles instantly onchain (settled 01315e9d-6…) — S2

Re-evaluate

Filling gap — buying Cointelegraph.com News — Circle to acquire Tazapay to expand USDC cross-border payments ($0.002)…

Re-evaluate

Paid $0.002 to Cointelegraph.com News — Circle to acquire Tazapay to expand USDC cross-border payments (settled b71fbc0c-c…) — S3

Sufficiency

Final check — "What is USDC?": 100% assessed by S2

Sufficiency

Final coverage assessment — The only sub-claim asks what USDC is. Source S2 directly defines it: 'USDC is a fully-reserved dollar stablecoin that settles peer-to-peer onchain in seconds.' This explicitly answers the question. S1 and S3 mention USDC only in passing (S1 not at all in the supplied passage; S3 references USDC payments reach) and do not define it. No requested part remains missing.

Synthesize

Synthesizing a grounded answer from 3 source(s)…

Evidence

Relevance review returned; only checked excerpts can retain support, and review cannot raise it.

Evidence

Verified — S2 supports claim 1 at 100%: “USDC is a fully-reserved dollar stablecoin that settles peer-to-peer onchain in seconds.”

Evidence

Below reward gate — S2 supports claim 1 at 0%: “Because settlement is final and programmable, it removes the multi-day delays of card networks and ACH.”

Evidence

Rejected 0 invalid evidence span(s) and 2 unsupported citation marker(s); rejected markers cannot receive citation rewards.

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

Stablecoin Ledger contributed 100% → reward $0.025

Settle

Settled $0.025 citation reward → Stablecoin Ledger (f5b851ab-8…)

Done

Done. Spent $0.03 across 3 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.

View JSON ↗Download

A new follow-up runs on Arc mainnet with today’s sources and budget. Only the historical question supplies context.

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Carries this dispatch’s question as context — never its answer. The next dispatch is read from sources bought for it.

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