Gateway Nanopayments Primer
Circle Developer Notes / 0.002400 USDCreceipt evidence
0x80352697...c6e5c0
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 hash0x80352697c7e9bb11b7c571e58fcd21ce1100a948ffc687c44c9da291c2c6e5c0
previous hash0x36195a81e32a0ee27d858b0e83559f450cccb8ac05b1c328bd5eda5839c47943
query id0x6da3272a78b94e05
source idcircle-gateway-nano
creator wallet0x2222...2222
created at2026-06-24T14:50:51.143Z
payment resourceforum-fee-router:0xeff9bc359e8f2a5eabce55af3f1bb24f98eabf59
query payment hashnot reader-paid
payer0x4164F5B52ecc6F847f03071A287b0B59954cbcEe
Arc tx0x620537f6...af43e5
FeeRouter split76
FeeRouter createSplit0x308cca13...7b5b3d
FeeRouter pay0x620537f6...af43e5
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
How do multi-turn AI research sessions accumulate citation receipts over time?
Multi-turn AI research sessions accumulate citation receipts over time through a structured payment and logging system. In CitePay Research Sessions, each follow-up question inherits context from the previous 3 Q&A pairs, and every turn automatically pays creators in USDC via Circle Gateway x402 protocol. Each citation generates a receipt with SHA-256 evidence hash and content integrity proof, stored on Arc Testnet. Sessions accumulate a running total of payments and are shareable with a full receipt trail showing exactly what was paid, to whom, and why. The receipts are verifiable on-chain without requiring a database—pure chain verification through Arc's RPC. Over multiple turns, these individual citation payments compound, creating an auditable history of knowledge reuse and creator compensation that persists on the blockchain.
Open answer evidenceProvides technical foundation for how x402 payments batch and clear at sub-cent values without per-payment gas, enabling the nanopayment infrastructure that makes per-citation receipts economically viable.No paid excerpt recorded.