Gateway Nanopayments Primer
Circle Developer Notes / 0.002400 USDCreceipt evidence
0xdf74779b...725239
paid to creator0.002400USDC
local proof
Circle Developer Notes
This receipt binds a source payment to the answer that used it. The previous hash links it into the append-only attribution ledger.
receipt hash0xdf74779baf380444d8e291f64e10010b9c271e4a6cce032282d88a54e2725239
previous hash0x9ec3404a06db8505153b454b59a5bcf26dd35ec262996db45b45319732be39e3
query id0x3508d65c5c765591
source idcircle-gateway-nano
creator wallet0x2222...2222
created at2026-06-16T13:33:08.094Z
payment resource/api/sources/circle-gateway-nano
query payment hashnot reader-paid
payerlocal proof
transactionpending settlement
FeeRouter splitnot FeeRouter-routed
FeeRouter createSplitnot FeeRouter-routed
FeeRouter paynot FeeRouter-routed
answer context
Why do x402 and Gateway make sub-cent source payments possible?
The paying agent treated "Why do x402 and Gateway make sub-cent source payments possible?" as a source-backed answer, not a free scrape. Circle Developer Notes: Circle Gateway batches signed EIP-3009 authorizations so x402 payments can clear at sub-cent values without per-payment gas. Canteen Research: Lepton asks builders to make sub-cent value move for agents and creators: per article, per call, per second, and per citation. Indie Researcher: A source payment should be tiny, automatic, visible to the creator, and tied to the answer that reused the work. It bought the minimum useful bundle of sources, paid each cited creator in USDC atomic units, and wrote a receipt chain that ties the answer to the citations that earned.
Open answer evidenceMatched gateway, x402 in the source registry.