Gateway Nanopayments Primer
Circle Developer Notes / 0.002400 USDCreceipt evidence
0x724e4640...20893d
paid to creator0.002400USDC
forum routed
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 hash0x724e46409b0400b6784f489148e6b7cd0fdbb37b3c3560f503c78c826120893d
previous hash0x28dbb58ac752e0acfd7deec58b6285a28915d25e71eb3ec2f3edab3c4a04815e
query id0x15917d54380bbdc3
source idcircle-gateway-nano
creator wallet0x2222...2222
created at2026-06-23T13:28:07.770Z
payment resourceforum-fee-router:0xeff9bc359e8f2a5eabce55af3f1bb24f98eabf59
query payment hashnot reader-paid
payer0x4164F5B52ecc6F847f03071A287b0B59954cbcEe
transaction0x13431806...63e1fc
FeeRouter split7
FeeRouter createSplit0xb451d234...1ea2eb
FeeRouter pay0x13431806...63e1fc
answer context
How can a budgeted AI agent pay publishers per citation using x402 on Arc?
The paying agent treated "How can a budgeted AI agent pay publishers per citation using x402 on Arc?" as a source-backed answer, not a free scrape. Canteen Research: Lepton asks builders to make sub-cent value move for agents and creators: per article, per call, per second, and per citation. LeptonWeb Lab: A builder log for Tollgate, showing paid citations, receipt hashes, x402 source access, and creator onboarding on Arc. 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.