← The evidence ledger
Evidence row 2253730
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agents.avasis.ai/v1/base/payment-verify
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 9802e26bebc6bbe00fc8dab2ad453821173576ca58091cea684eb85ec703615d
- Leaf
- 0xae230e77d7557e271ee9af4d6e679213a3d3fcc2c96fef473e82a6c782946ace
What was observed
{
"endpoints": [
[
"x402",
"https://agents.avasis.ai/v1/base/payment-verify"
]
],
"name": "Avasis Agent Platform",
"owner_address": "0x6264191d6dd5427435b5e829077842e130ef1fc8",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0x6264191D6dD5427435B5E829077842e130Ef1fc8",
"scheme": "exact"
}
],
"description": "x402 payment verify on Base (chain 8453, $0.02): tx hash (your PAYMENT-RESPONSE transaction) or from + nonce of the EIP-3009 authorization you signed -> settled yes/no from the chain (AuthorizationUsed + adjacent USDC Transfer): payer, payTo, amount, block, confirmations, safe/finalized, relayer label, fee, matches vs your expected payTo/amount. Phrases: x402 payment verify, did my payment settle, verify usdc payment, settlement proof. GET or POST. Not found -> 404, never charged.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"amount": "2000",
"network": "base",
"payTo": "0x6264191d6dd5427435b5e829077842e130ef1fc8",
"tx": "0x058bc61d196b9d6ea4cc15315711ef075a0c7e9a3224c19e3deb44eaa4f568ec",
"wait": 0
},
"type": "http"
},
"output": {
"example": {
"advice": "final: book it",
"asset": {
"address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"known": "USDC (Circle)",
"symbol": "USDC"
},
"authorizations": 1,
"block": {
"age_s": 14133,
"hash": "0x1805f413f0d4032c819c6b0e5b8b8f485b0524faf2276a4199fb89309d0d1441",
"number": 53352110,
"timestamp": 1793493567
},
"chain": "base",
"chain_id": 8453,
"confirmations": 5991,
"expected": {
"amount": "0.002",
"amount_raw": "2000",
"asset": null,
"from": null,
"nonce": null,
"payTo": "0x6264191d6dd5427435b5e829077842e130ef1fc8"
},
"finality": {
"confirmations": 5991,
"finalized": true,
"finalized_head": 53357536,
"note": "Base: safe = the block is in a batch posted to Ethereum; finalized = that Ethereum block is finalized (~15-25 min). Undoing a safe block would need an Ethereum reorg.",
"safe": true,
"safe_head": 53358056
},
"found": true,
"headline": "SETTLED on Base: 0.002 USDC from 0x8ec9…9d15 to 0x6264…1fc8, block 53352110 (4 h ago), 5991 confirmations, finalized, relayed by a third-party wallet (gasless EIP-3009)",
"kind": "payment-verify",
"latest_block": 53358100,
"lookup": "tx",
"matches": {
"all": true,
"amount": true,
"asset": null,
"authorization": null,
"payTo": true
},
"method": {
"name": "transferWithAuthorization",
"selector": "0xe3ee160e"
},
"mined": true,
"network": "eip155:8453",
"note": "On-chain facts only (the same rule our own settle reconciler uses): AuthorizationUsed(authorizer, nonce) + its adjacent Transfer = that authorization's payment. A seller's receipt, status page or PAYMENT-RESPONSE is a claim; this is the chain.",
"payment": {
"amount": "0.002",
"amount_raw": "2000",
"asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"basis": "the EIP-3009 (AuthorizationUsed + adjacent Transfer) Transfer to payTo",
"decimals": 6,
"eip3009": true,
"log_index": 55,
"nonce": "0x7a7f161978b5f38c40a4d50fd28021cf0b9d0c10c2c50368059d0340d2b663a6",
"pay_to": "0x6264191d6dd5427435b5e829077842e130ef1fc8",
"payer": "0x8ec901f7e2710163387d70950f680f1ea2269d15",
"symbol": "USDC"
},
"polls": 1,
"rail": "x402-payment-verify-1",
"reads": {
"calls": 8,
"rpc": "fixture"
},
"settled": true,
"submitter": {
"address": "0x625d8a65134079f8faaac39a7947c73d93c6ac39",
"basis": null,
"known": null,
"note": "a third party paid the gas: the payer only signed an EIP-3009 authorization (x402 facilitators settle from rotating hot wallets)",
"relayed": true,
"tx_count": 1690137
},
"transfers": [
{
"amount": "0.002",
"amount_raw": "2000",
"eip3009": true,
"from": "0x8ec901f7e2710163387d70950f680f1ea2269d15",
"log_index": 55,
"nonce": "0x7a7f161978b5f38c40a4d50fd28021cf0b9d0c10c2c50368059d0340d2b663a6",
"payment": true,
"to": "0x6264191d6dd5427435b5e829077842e130ef1fc8"
}
],
"transfers_total": 1,
"tx": {
"eth_usd": 2265.28,
"fee_eth": "0.00000086555958535",
"fee_usd": 0.001961,
"gas_used": 86474,
"l1_fee_eth": "0.00000000081958535",
"nonce": 1689614,
"status": "success",
"to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"to_known": "USDC (Circle)"
},
"tx_hash": "0x058bc61d196b9d6ea4cc15315711ef075a0c7e9a3224c19e3deb44eaa4f568ec",
"verdict": "SETTLED",
"waited_ms": 0
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"amount": {
"description": "optional expected amount in atomic units (USDC: 20000 = $0.02, the accepts[].amount you paid) or a decimal with a dot (0.02): sets matches.amount",
"type": "string"
},
"asset": {
"description": "optional token contract (0x + 40 hex; default USDC on Base)",
"type": "string"
},
"from": {
"description": "with nonce: the payer address of the EIP-3009 authorization you signed (payload.authorization.from)",
"type": "string"
},
"lookback": {
"description": "for from + nonce: blocks to search back (default 50000, about 28 h on Base; max 150000)",
"maximum": 150000,
"minimum": 1000,
"type": "integer"
},
"network": {
"description": "optional; must be base / eip155:8453 (x402 USDC settles on Base)",
"type": "string"
},
"nonce": {
"description": "with from: the 32-byte authorization nonce (payload.authorization.nonce, 0x + 64 hex)",
"type": "string"
},
"payTo": {
"description": "optional expected recipient (the 402's accepts[].payTo): sets matches.payTo",
"type": "string"
},
"tx": {
"description": "the settle transaction hash (0x + 64 hex): the `transaction` of your x402 PAYMENT-RESPONSE / settle receipt. Or pass from + nonce instead",
"type": "string"
},
"wait": {
"description": "seconds to keep looking for the settle before answering (default 5, max 25; 0 = one read). Unknown after that -> 404, not charged",
"maximum": 25,
"minimum": 0,
"type": "integer"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"advice": {
"type": "string"
},
"also_available": {
"type": "object"
},
"asset": {
"type": "object"
},
"authorizations": {
"type": "integer"
},
"block": {
"type": [
"object",
"null"
]
},
"chain": {
"type": "string"
},
"chain_id": {
"type": "integer"
},
"confirmations": {
"type": [
"integer",
"null"
]
},
"expected": {
"type": "object"
},
"finality": {
"type": "object"
},
"found": {
"type": "boolean"
},
"headline": {
"type": "string"
},
"kind": {
"type": "string"
},
"latest_block": {
"type": [
"integer",
"null"
]
},
"lookup": {
"type": "string"
},
"matches": {
"type": "object"
},
"method": {
"type": "object"
},
"mined": {
"type": "boolean"
},
"network": {
"type": "string"
},
"payment": {
"type": [
"object",
"null"
]
},
"polls": {
"type": "integer"
},
"rail": {
"type": "string"
},
"searched": {
"type": "object"
},
"settled": {
"type": "boolean"
},
"submitter": {
"type": "object"
},
"transfers": {
"type": "array"
},
"transfers_total": {
"type": "integer"
},
"tx": {
"type": "object"
},
"tx_hash": {
"type": [
"string",
"null"
]
},
"verdict": {
"type": "string"
},
"waited_ms": {
"type": "integer"
}
},
"required": [
"chain",
"network",
"found",
"settled",
"verdict",
"headline",
"matches",
"waited_ms",
"polls"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "bc_d5i1omim"
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"maxItems": 11,
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T17:30:43.621Z",
"quality": {
"lastCalledAt": "2026-11-02T17:30:43.621Z"
},
"resource": "https://agents.avasis.ai/v1/base/payment-verify",
"serviceName": "Avasis Agent Platform",
"tags": [
"x402",
"payment-verify",
"eip-3009",
"usdc",
"settlement"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "x402 payment verify on Base (chain 8453, $0.02): tx hash (your PAYMENT-RESPONSE transaction) or from + nonce of the EIP-3009 authorization you signed -> settled yes/no from the chain (AuthorizationUsed + adjacent USDC Transfer): payer, payTo, amount, block, confirmations, safe/finalized, relayer label, fee, matches vs your expected payTo/amount. Phrases: x402 payment verify, did my payment settle, verify usdc payment, settlement proof. GET or POST. Not found -> 404, never charged."
}What the leaf hashes
{"body":"9802e26bebc6bbe00fc8dab2ad453821173576ca58091cea684eb85ec703615d","id":2253730,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793647855891652,"prev":null,"subject":"x402_bazaar:https://agents.avasis.ai/v1/base/payment-verify","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
- 0xae23628076c796c15dfc5bc020f56b56d004321ae8f758a98f3ce9bad1d5d4c6
- 0x3ba2b1ca8083aa8168e974e5830637a29c72ae150e570017e358fb46ad82de54
- 0x35658d57af7c9882e7359c9839165fd121f2626aa1680451b41d46a254f5cdeb
- 0x5d986d052ec7b0a20fa1a4cf51ee1bccfb6433027a4fd15cfe0c962f56654ed5
- 0xb494c8efc95173f01c51198805947f95b1a2ba60b52fd6058df8d4b5d5927313
- 0xa103153b37ccdfd4af822a9a66a5d4094f659e762ad55811b3b4cc44096d9f41
- 0x758907f2cb99a0475d01fc78ae388a7dbc4fa680198bc9d1c80eb2e175a5447c
- 0xb2452f7bd8676ff686bc7b5c4bd9ca9ea962a9f62d420d9d600b4a9e7426ef0c
- 0x953a7087a3ca8bddee55974fb97a123fd3d9c6cbc1271a07d215e5b5bdc02e6c
- 0xbe4c7bb0ca3d89e1631825f3eb765fcd32f3e255237d9e0271df7bc9e0f07089
- 0x60e6510b4216df3c62e82dc5349d949fa747b708c8c536c898f4b7d5c2fea27c
- 0x4b689db5a9e6139b1b496c240f18ec19fa5b0f0bc49dacaed806958889560cc9
- 0x30482ffd581ea067af14f15cf3c17e7dcb174f749e858ecded170a1f5f75cc59
- 0x27deeb1ef1692b4773e73c16b6d8d0cdf4251fe2660821e5336f57539770fd2f
- 0x793184605629cd36ba80a07cbe115ca35e8923297bf024260c6f5c06b255f638
- 0x2922573a524a0694086782ac45fa3083d3fc3f6a2a479b2105e1e2f06b2916f7
- 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
- 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af