receipt evidence

0x21dea428...8e3573

paid to creator0.002400USDC

local proof

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 hash0x21dea428cdd697aec1d75e3c47db4cbe64dd9f0c983ddf1106c03a5b388e3573

previous hash0x1c77afce753204c125108e2c88bc35a7087b3a21e1730936e492a3c023afaaf4

query id0x612dd1485e3ece9f

source idcircle-gateway-nano

creator wallet0x2222...2222

created at2026-06-16T14:34:13.725Z

payment resource/api/sources/circle-gateway-nano

query payment hash0x41aa96d3c90527cfa97eacd8d56231d85260ddea7047e5c80d532b1fe38514d4

payerlocal proof

transactionpending settlement

FeeRouter splitnot FeeRouter-routed

FeeRouter createSplitnot FeeRouter-routed

FeeRouter paynot FeeRouter-routed

answer context

How does Tollgate prove paid citations with x402 receipts on Arc?

The paying agent treated "How does Tollgate prove paid citations with x402 receipts on Arc?" as a source-backed answer, not a free scrape. LeptonWeb Lab: A builder log for Tollgate, showing paid citations, receipt hashes, x402 source access, and creator onboarding on Arc. Canteen Research: Lepton asks builders to make sub-cent value move for agents and creators: per article, per call, per second, and per citation. 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 evidence

reader paymentx402 verified

amount0.001000 USDC

payer0x26F8...C0E0

payment hash0x41aa96d3...8514d4

Gateway Nanopayments Primer

Circle Developer Notes / 0.002400 USDC

Matched x402 in the source registry.