Gateway Nanopayments Primer
Circle Developer Notes / 0.002400 USDCreceipt evidence
0x00272d1d...4c2c17
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 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
transactionpending settlement
FeeRouter splitnot FeeRouter-routed
FeeRouter createSplitnot FeeRouter-routed
FeeRouter paynot FeeRouter-routed
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.