Gateway Nanopayments Primer
Circle Developer Notes / 0.002400 USDCreceipt evidence
0x00272d1d...4c2c17
creator amount0.002400USDC
local proof
Circle Developer Notes
This receipt binds a source payment to the answer that used it; FeeRouter-routed receipts accrue into creator-claimable balances. The previous hash links it into the append-only attribution ledger.
payment statuslocal proof
settlement modelocal-proof
amount0.002400 USDC
receipt hash0x00272d1d6678cb19f46e84a8c0363b782ae9ab2d205494d28730d66c0d4c2c17
previous hash0x9996f57e16f25289e25b19802f9b504eb120ff8e56ae25198150ed955449d7b1
query id0xb358b7e0d178f93b
source idcircle-gateway-nano
creator wallet0x2222...2222
created at2026-06-16T14:18:27.470Z
payment resource/api/sources/circle-gateway-nano
query payment hashnot reader-paid
payerlocal proof
Arc txpending settlement
FeeRouter splitnot FeeRouter-routed
FeeRouter createSplitnot FeeRouter-routed
FeeRouter paynot FeeRouter-routed
contributorssingle recipient
canonical URLhttps://developers.circle.com/gateway/nanopayments
content fetched atnot recorded
source content hashnot recorded
source excerpt hashnot recorded
ownership proofnot verified
ownership signernot verified
answer context
How does Tollgate prove paid citations with x402 receipts on Arc?
The paying agent treated "How does Tollgate prove paid citations with x402 receipts on Arc?" as a source-backed answer, not a free scrape. LeptonWeb Lab: A builder log for Tollgate, showing paid citations, receipt hashes, x402 source access, and creator onboarding on Arc. Canteen Research: Lepton asks builders to make sub-cent value move for agents and creators: per article, per call, per second, and per citation. Circle Developer Notes: Circle Gateway batches signed EIP-3009 authorizations so x402 payments can clear at sub-cent values without per-payment gas. 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 x402 in the source registry.No paid excerpt recorded.