Gateway Nanopayments Primer
Circle Developer Notes / 0.002400 USDCreceipt evidence
0x53dd4599...132e22
creator amount0.002400USDC
refunded
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 statusrefunded
settlement moderefunded
amount0.002400 USDC
receipt hash0x53dd4599e9ae0fea8b9c17783dee3e40652d779f498c047f759345fcdb132e22
previous hash0x71c350a25e74b9348827d09baec992bff1258df37b77e2f0dfe668ac48f8b978
query id0x1797e38acc518870
source idcircle-gateway-nano
creator wallet0x2222...2222
created at2026-07-05T11:57:56.297Z
payment resourcetollgate-refund:unused-source
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 at2026-07-05T11:57:56.297Z
source content hash0xc8a20c3f7aaad6f543f704e93e597d7e4e5a78da6a7f90ad586b65635de1bc28
source excerpt hash0x040ead003a061a3df77b69f1231ee277069666b951ead02b685c8626bd888d00
ownership proofseed-demo
ownership signernot verified
answer context
How does Tollgate ground answers in paid sources on Arc?
Tollgate grounds answers in paid sources on Arc by citing specific sourceIds for each claim made. When answering questions, Tollgate retrieves relevant excerpts from purchased sources and attributes statements directly to those sources using their unique identifiers. This ensures transparency about which source material supports each claim in the response.
Open answer evidenceEssential infrastructure: explains x402 nanopayments and EIP-3009 batching that enable sub-cent source payments on Arc without gas friction.Seed/demo content from Circle Developer Notes. Title: Gateway Nanopayments Primer. Excerpt: Circle Gateway batches signed EIP-3009 authorizations so x402 payments can clear at sub-cent values without per-payment gas. Tags: circle, gateway, eip-3009, x402, usdc. Canonical URL: https://developers.circle.com/gateway/nanopayments.