Gateway Nanopayments Primer
Circle Developer Notes / 0.002400 USDCreceipt evidence
0xbd7f2c90...3e280c
creator amount0.002400USDC
accrued -> claimable on-chain
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 statusaccrued -> claimable on-chain
settlement modeforum-routed
amount0.002400 USDC
receipt hash0xbd7f2c909df20aaaa71d44550c782efbcdff0bbecef63b2dd467b5d28e3e280c
previous hash0xc6174828b0c7b8ac117339e05efbf5197a9ad8c4d1da54c0104184038b0c20c0
query id0xda909d0357c319d5
source idcircle-gateway-nano
creator wallet0x2222...2222
created at2026-06-23T14:52:54.366Z
payment resourceforum-fee-router:0xeff9bc359e8f2a5eabce55af3f1bb24f98eabf59
query payment hashnot reader-paid
payer0x4164F5B52ecc6F847f03071A287b0B59954cbcEe
Arc tx0x908055f7...b8dce6
FeeRouter split19
FeeRouter createSplit0x3d25ee38...755cd8
FeeRouter pay0x908055f7...b8dce6
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
What does Tollgate use to prove paid citations with on-chain receipts on Arc?
Tollgate uses USDC on-chain receipts on Arc to prove paid citations. The system leverages Arc's stablecoin-native settlement with USDC gas and sub-second finality, combined with x402 payment protocols that enable sub-cent value transactions. Receipt hashes are published on-chain, making source payments visible, automatic, and tied to the specific answers that reused the work.
Open answer evidenceExplains x402 payment batching mechanism that enables sub-cent USDC transactions without per-payment gas, foundational to receipt-based citation paymentsNo paid excerpt recorded.