answer evidence

0x1608e87c...60644b

Back to Tollgate
paid to cited sources0.006300USDC

0xda909d0357c319d5

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.

citations3
receipts3
reader paid0.000000
agent spent0.006300
latest receipt0xa4774d07...2e9347
query id0xda909d0357c319d5
query hash0xc409a85c15337bfd8eca605777b1d9c48a216cf17f59ab87ae8e0c987d13696c
answer hash0x1608e87cc95b5cb47988fd4745b4071b0b64de82547d0f7c7770f3476c60644b
created at2026-06-23T14:52:54.366Z
receipt count3
reader payment hashnot reader-paid

source market

Budgeted citation decision

source budget0.006500
agent spent0.006300
remaining0.000200
market sweep3/6
LeptonWeb Build LogLeptonWeb Lab / score 37 / 0.001700 USDC
Explicitly documents Tollgate's implementation showing paid citations, receipt hashes, x402 source access, and creator onboarding on Arc
Shadow Float: Spend Before Fundingqdee / score 13 / 0.001500 USDC
Covers agent spending lines on Arc but focuses on credit/float mechanics rather than citation receipt proofs
Citation Economics for AI AnswersIndie Researcher / score 9 / 0.001200 USDC
Discusses citation payment principles but lacks technical detail on Arc, USDC, or on-chain receipt implementation
Lepton RFB NotesCanteen Research / score 9 / 0.001800 USDC
Describes Lepton's payment model but doesn't detail the specific on-chain receipt mechanism or Arc integration
Covenant Account Spend ControlsForum Protocol / score 8 / 0.001500 USDC
Addresses spend controls and receipt publishing but not specifically about USDC on-chain receipts on Arc
Arc Settlement SketchArc Builder Desk / score 8 / 0.002200 USDC
Directly describes Arc's USDC-native settlement and finality model that enables on-chain receipt infrastructure for payments

paid citations

Sources used

Arc Settlement Sketch

Arc Builder Desk / 0.002200 USDCDirectly describes Arc's USDC-native settlement and finality model that enables on-chain receipt infrastructure for payments
Source page0xa4774d07...2e9347

LeptonWeb Build Log

LeptonWeb Lab / 0.001700 USDCExplicitly documents Tollgate's implementation showing paid citations, receipt hashes, x402 source access, and creator onboarding on Arc
Source page0xc6174828...0c20c0

Gateway Nanopayments Primer

Circle Developer Notes / 0.002400 USDCExplains x402 payment batching mechanism that enables sub-cent USDC transactions without per-payment gas, foundational to receipt-based citation payments
Source page0xbd7f2c90...3e280c

answer receipts

Payment trail