Gateway Nanopayments Primer
Circle Developer Notes / 0.002400 USDCreceipt evidence
0x22ce4b60...f19e6a
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 hash0x22ce4b60e99f2d6e9bd1b0c58facc711ca6008f82b04a8234ff86f299cf19e6a
previous hash0x6bfe3b29cefe492fb4373aedf1a22bea58ede13f3e6b5f2601fe6739ca6bd09d
query id0x5eecb2770b55c11e
source idcircle-gateway-nano
creator wallet0x2222...2222
created at2026-07-10T18:26:17.971Z
payment resourcetollgate-refund:unused-source
query payment hash0xcbd940bb9f14cc3d1d2aff8af0d10b73720ecf84580609f856b585399620c953
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 at2026-07-10T18:26:17.971Z
source content hash0x9df3d52e5c25ab4b39cefbfd50001db12b5227febabb7f0ae7e5121f7d2f664c
source excerpt hash0x040ead003a061a3df77b69f1231ee277069666b951ead02b685c8626bd888d00
ownership proofseed-demo
ownership signernot verified
answer context
How does Tollgate's FeeRouter prove a citation payout with an on-chain receipt?
Tollgate's FeeRouter proves a citation payout with an on-chain receipt by emitting an evidence receipt that is hash-chained into a tamper-evident ledger each time a payout occurs. The FeeRouter contract routes USDC through an on-chain split keyed to the creator's wallet, and this payout transaction generates a cryptographic receipt linked into a ledger structure, creating an auditable chain of evidence for each citation payment.
Open answer evidencereader paymentx402 settled
amount0.010000 USDC
payer0xea33...3882
payment hash0xcbd940bb...20c953
creator payouts (reader-paid)0.001600 USDC
protocol retained (reader-paid)0.008400 USDC
budget utilization16.0%
Covers EIP-3009 batching and gasless sub-cent settlement via Circle Gateway, relevant to how FeeRouter handles nanopayment receipts without per-payment gas overhead.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.