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What is USDC?

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

9/20/2026, 6:10:01 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 its settlement is final and programmable, it removes the multi-day delays associated with card networks and ACH . The sources also indicate that USDC is used for payments reach: Tazapay offers payout rails across 100-plus markets, extending Circle's USDC payments reach. The provided passages do not describe USDC's issuer, governance, reserve composition, or regulatory status beyond the "fully-reserved dollar stablecoin" characterization .

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$0.01
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 · 50 steps
§ IThe decision$0.005 settled / $0.01
50%$0.005 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 50 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/$0.005000 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 $0.005000 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 $0.005000 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 $0.005000 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 source (S1) is a Coinbase blog post responding to the Wall Street Journal about proprietary trading; it never defines or explains USDC. No supplied passage addresses what USDC is, so there is only topical context (a crypto-adjacent source) without an answer.

Re-evaluate

Coverage of the sole sub-claim is 0.1, well below 0.5, and affordable skipped sources could fill the gap. Highest priority is 'Stablecoin Ledger — Why USDC settles instantly onchain' ($0.003), which directly concerns USDC mechanics; second is 'Cointelegraph — Circle to acquire Tazapay to expand USDC cross-border payments' ($0.002), which provides context on USDC's issuer and payments role. Both fit the remaining $0.005 budget ($0.005 total). Other skipped sources concern x402, nanopayments, idempotency, gardening, retro hardware, AI agents, or unrelated topics and would not answer what USDC is.

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 e028ebbe-d…) — 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 eef2100b-8…) — S3

Sufficiency

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

Sufficiency

Final coverage assessment — The only source that directly defines USDC is S2, which states it is a fully-reserved dollar stablecoin that settles peer-to-peer onchain in seconds. This directly answers the question 'What is USDC?' by identifying its type and key property. S1 and S3 mention USDC only in passing or not at all and do not provide a definition. 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 10%: “Because settlement is final and programmable, it removes the multi-day delays of card networks and ACH.”

Evidence

Below reward gate — S3 supports claim 1 at 10%: “Tazapay processes $25 billion in annualized volume and offers payout rails across 100-plus markets, extending Circle’s USDC payments reach.”

Evidence

Rejected 0 invalid evidence span(s) and 1 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 $0.005

Settle

Settled $0.005 citation reward → Stablecoin Ledger (53025754-0…)

Done

Done. Spent $0.01 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.

Ask a follow-upNew dispatch · creators paid again

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

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