What is the Arc blockchain and what currency does it use?
9/20/2026, 5:55:26 PM · llm:deepseek:deepseek-v4-flash + llm:mimo:mimo-v2.5 on 1 step
The dispatch, itemised.
Breaking down: "What is the Arc blockchain and what currency does it use?"
Identified 2 research target(s) to investigate; these are not established facts
Deep mode: up to 4 paid/cached reads plus one bounded gap-expansion pass when needed.
Discovered 21 verified source(s)
Recalled 22 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 selected 2/2 positive proposal(s): 2 cached + 0 fresh, predicting 2/2 claim(s) above the evidence floor with $0.000000/$0.010000 fetch USDC reserved.
Free-preview pre-check maps an actionable source to every sub-claim (2/2); paid reading may proceed within the budget.
This CoinDesk article directly addresses the question: it is about Circle's 'Arc blockchain' and its first day. The preview mentions it, providing a high-confidence source for what Arc is. Past citation rate is low (13%) but for this specific question, it is the most topically relevant candidate. — selected for the claim-aware evidence portfolio (targets claims 1, 2; 0 fetch USDC, 1 attention slot).
Arc Settlement Benchmarks is highly relevant (94% past citation rate) and its preview mentions 'Arc testnet'. It will help answer what Arc is (a blockchain) and may provide details on its native currency for settlement. It's a strong, high-reputation source. — selected for the claim-aware evidence portfolio (targets claim 1; 0 fetch USDC, 1 attention slot).
Stripe Blog has a high past citation rate (86%) but the preview is about FX costs and currency capabilities, not specifically about the Arc blockchain. It might be relevant for general payments context but not directly for defining Arc or its currency. Not worth the budget for this specific query.
Web Payments Review has a low past citation rate (25%) and the preview is about x402 payment timing, not specifically about Arc. It might discuss settlement on Arc indirectly but lacks direct relevance. Not the best use of the budget.
The Coinbase Blog preview is about a response to the Wall Street Journal regarding trading, not about Arc. It mentions USDC but is not relevant to the question about the Arc blockchain.
Decrypt article is about Fed and banking access for crypto firms, not about Arc. It mentions stablecoins but is not relevant to defining the Arc blockchain.
Stablecoin Ledger focuses on USDC and its settlement, not on the Arc blockchain. It has never been cited on this subject. Not relevant for answering what Arc is or its currency.
Agent Economy Weekly is about x402 and agent payment rails, not specifically about Arc. It has never been cited on this subject. Not directly helpful for defining Arc.
Onchain Micropayments Digest is about nanopayments and batching, not about Arc. Not relevant for the specific question.
Distributed Systems Notes is about idempotency keys, not about Arc. Not relevant.
Garden & Soil Monthly is about gardening, completely unrelated to Arc or blockchain.
Retro Game Hardware is about console repair, not relevant.
Keryx Engineering notes are about Keryx's own recovery process, not about Arc. While it mentions USDC and x402, it does not address what Arc is or its currency.
Simon Willison's Weblog is about Anthropic's AI model, not relevant to Arc.
Hugging Face Blog is about computer use agents, not relevant to Arc.
Vitalik Buterin's website is about DeFi on Ethereum, not about Arc. Arc may be an Ethereum L2 but this preview doesn't mention it directly.
Latent Space is about AI agents and ontologies, not relevant to Arc.
Cointelegraph article is about ECB and crypto payments in euro area, not about Arc. Not relevant.
Inner Axiom is about mystic topics, completely irrelevant.
Conzit Labs is about Kanye West and AI, not relevant.
Agent spend wallet ready: 0x29028Fe1122E17Fe7863A22701e863FE4DaE1aFB (balance sufficient)
Reused cached CoinDesk: Bitcoin, Ethereum, Crypto News and Price Data — How Circle’s institutional Arc blockchain got taken over by memecoins on day one (free) — S1
Reused cached Arc Settlement Benchmarks — Measuring x402 settlement latency on Arc (free) — S2
Sub-claim "What is the Arc blockchain?": 40% covered by S1, S2 — S1 identifies Arc as Circle's institutional blockchain (a corporate L2) and S2 notes it uses BFT consensus with sub-second finality on testnet, but neither passage gives a full definition of what Arc is.
Sub-claim "What currency does the Arc blockchain use?": 0% covered — No supplied passage names any currency used by Arc; S1 mentions memecoins generally but not Arc's native/used currency.
The currency sub-claim is entirely uncovered (0.0). The only affordable skipped source plausibly relevant to Arc's currency is 'Stablecoin Ledger — Why USDC settles instantly onchain' ($0.003), which fits the $0.01 budget and may indicate USDC usage on Arc given Circle's association. Other skipped sources are unrelated to Arc or its currency.
Filling gap — buying Stablecoin Ledger — Why USDC settles instantly onchain ($0.003)…
Paid $0.003 to Stablecoin Ledger — Why USDC settles instantly onchain (settled 29cd2b8d-6…) — S3
Final check — "What is the Arc blockchain?": 50% assessed by S1, S2
Final check — "What currency does the Arc blockchain use?": 0% assessed
Final coverage assessment — The supplied passages identify Arc as Circle's blockchain (S1: 'Circle blockchain Arc') and mention Arc testnet and BFT consensus (S2), but no passage states what currency Arc uses. S3 discusses USDC generally and does not connect USDC to Arc. Therefore the first sub-claim is partially supported, while the second sub-claim has no direct answer. The assessment does not establish a complete supported answer for every requested part.
Synthesizing a grounded answer from 3 source(s)…
Relevance review returned; only checked excerpts can retain support, and review cannot raise it.
Below reward gate — S1 supports claim 1 at 10%: “Circle blockchain Arc's first day was dominated by memecoins, and the traders behind them had already moved on by Thursday morning.”
Below reward gate — S3 supports claim 2 at 10%: “USDC is a fully-reserved dollar stablecoin that settles peer-to-peer onchain in seconds.”
Rejected 0 invalid evidence span(s) and 2 unsupported citation marker(s); rejected markers cannot receive citation rewards.
No citation passed the evidence gate — the $0.010000 citation pool stays unspent; settled access tolls still stand.
Drafted answer citing 0 source(s)
Confidence: Low — no citation passed the evidence gate.
Done. Spent $0.003 across 1 confirmed/simulated payment(s) to creators.
Payouts to cited creators appear here.
The supplied sources do not define what the Arc blockchain is. The only description available is that Arc is a "Circle blockchain" whose first day was dominated by memecoins. No source states what currency Arc uses; the only currency mentioned anywhere in the passages is USDC, described generally as a fully-reserved dollar stablecoin that settles peer-to-peer onchain in seconds, but no source links USDC to Arc. Therefore the currency question is unanswered by the provided sources.
Evidence ledger — quotes verified before rewards
What is the Arc blockchain?
0%No reward-qualifying evidence
What currency does the Arc blockchain use?
0%No reward-qualifying evidence
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.