← The evidence ledger
Evidence row 71220
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://arn-x402-payguard-payment-security.rajdeep-dutta-in.workers.dev/preflight
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 52ec0e8ce7d204e9c8a205202192d1c62862522af7ddf6dc31f331a3d841baf3
- Leaf
- 0x71cccb836041ae557f2615bb8d2e4248a6dbcc10be8f631b9721f52076d533e4
What was observed
{
"endpoints": [
[
"x402",
"https://arn-x402-payguard-payment-security.rajdeep-dutta-in.workers.dev/preflight"
]
],
"name": "arn-x402-payguard-payment-security.rajdeep-dutta-in.workers.dev/preflight",
"owner_address": "0xa7e1fe3744e3b6d55237d95ce575cafe3b8abecd",
"raw": {
"accepts": [
{
"amount": "1000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xa7e1fe3744E3b6D55237d95cE575cAFe3b8abeCD",
"scheme": "exact"
},
{
"amount": "1000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "5vX2u7mkwhxpvQYNA7SqmauJjkcfnxETQ6tKVZphzKyM",
"scheme": "exact"
}
],
"description": "Agent Reliability Network: ARN x402 PayGuard provides x402 payment security for autonomous AI agents. Check the seller before you pay with payment preflight and payment-challenge validation. Returns ALLOW, CAUTION, or BLOCK.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"intended_spend_usdc": 0.03,
"url": "https://paid-agent.example/api"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"authorization": {
"mechanism": null,
"status": "UNAVAILABLE"
},
"checks": {
"asset_address_valid": true,
"canonical_usdc": true,
"challenge_stable": true,
"content_type_sane": true,
"exact_payment": true,
"http_402": true,
"https": true,
"no_unsafe_redirect": true,
"pay_to_address_valid": true,
"pay_to_safe_receiver": true,
"positive_amount": true,
"reachable": true,
"reasonable_timeout": true,
"resource_binding": true,
"response_size_within_limit": true,
"structured_response_sane": true,
"supported_network": true,
"within_intended_spend": true,
"x402_v2": true,
"x402_valid": true
},
"decision": "ALLOW",
"errors": [],
"intended_spend_usdc": 0.03,
"latency_ms": 42,
"methodology": "live-security-v1",
"network": "eip155:8453",
"payTo": "0x1111111111111111111111111111111111111111",
"payment_required": true,
"quoted_price_atomic": "30000",
"quoted_price_usdc": 0.03,
"reachable": true,
"reason_codes": [],
"scheme": "exact",
"simulation": {
"failure": null,
"status": "UNAVAILABLE"
},
"warnings": [],
"x402_valid": true,
"x402_version": 2
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"authorization": {
"additionalProperties": false,
"description": "Optional unsigned payment authorization context to compare with the live x402 challenge",
"properties": {
"amount_atomic": {
"description": "Atomic token amount the buyer is about to authorize",
"pattern": "^[0-9]+$",
"type": "string"
},
"asset": {
"description": "Payment asset the buyer is about to authorize",
"type": "string"
},
"network": {
"description": "CAIP-2 payment network the buyer is about to authorize",
"type": "string"
},
"payTo": {
"description": "Payment recipient the buyer is about to authorize",
"type": "string"
},
"payer": {
"description": "Optional expected EIP-3009 authorization payer; distinct from a transaction relayer",
"type": "string"
},
"resource": {
"description": "Seller resource the authorization is intended to purchase",
"format": "uri",
"type": "string"
},
"transaction": {
"additionalProperties": false,
"description": "Optional unsigned Base eth_call input reused for transaction simulation and supported canonical USDC authorization decoding",
"properties": {
"data": {
"description": "Non-empty hex calldata for the unsigned simulation",
"pattern": "^0x(?:[0-9a-fA-F]{2})+$",
"type": "string"
},
"from": {
"description": "Optional EVM caller address for eth_call",
"type": "string"
},
"to": {
"description": "EVM call target; must match the challenged payment asset",
"type": "string"
},
"value": {
"description": "Optional hexadecimal native-value quantity for eth_call",
"pattern": "^0x(?:0|[1-9a-fA-F][0-9a-fA-F]*)$",
"type": "string"
}
},
"type": "object"
},
"valid_after": {
"description": "Optional authorization valid-after Unix timestamp",
"type": [
"integer",
"string"
]
},
"valid_before": {
"description": "Optional authorization expiry Unix timestamp",
"type": [
"integer",
"string"
]
}
},
"type": "object"
},
"intended_spend_usdc": {
"description": "Optional maximum USDC amount the buyer intends to authorize",
"exclusiveMinimum": 0,
"type": "number"
},
"url": {
"description": "HTTPS URL of the x402 seller endpoint to inspect live",
"format": "uri",
"type": "string"
}
},
"required": [
"url"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"asset": {
"type": [
"string",
"null"
]
},
"authorization": {
"additionalProperties": false,
"properties": {
"mechanism": {
"type": [
"string",
"null"
]
},
"status": {
"enum": [
"VERIFIED",
"MISMATCH",
"UNAVAILABLE"
],
"type": "string"
}
},
"required": [
"status",
"mechanism"
],
"type": "object"
},
"checks": {
"additionalProperties": false,
"properties": {
"asset_address_valid": {
"type": "boolean"
},
"canonical_usdc": {
"type": "boolean"
},
"challenge_stable": {
"type": "boolean"
},
"content_type_sane": {
"type": "boolean"
},
"exact_payment": {
"type": "boolean"
},
"http_402": {
"type": "boolean"
},
"https": {
"type": "boolean"
},
"no_unsafe_redirect": {
"type": "boolean"
},
"pay_to_address_valid": {
"type": "boolean"
},
"pay_to_safe_receiver": {
"type": "boolean"
},
"positive_amount": {
"type": "boolean"
},
"reachable": {
"type": "boolean"
},
"reasonable_timeout": {
"type": "boolean"
},
"resource_binding": {
"type": "boolean"
},
"response_size_within_limit": {
"type": "boolean"
},
"structured_response_sane": {
"type": "boolean"
},
"supported_network": {
"type": "boolean"
},
"within_intended_spend": {
"type": [
"boolean",
"null"
]
},
"x402_v2": {
"type": "boolean"
},
"x402_valid": {
"type": "boolean"
}
},
"required": [
"https",
"reachable",
"no_unsafe_redirect",
"http_402",
"x402_valid",
"x402_v2",
"exact_payment",
"supported_network",
"asset_address_valid",
"canonical_usdc",
"pay_to_address_valid",
"pay_to_safe_receiver",
"positive_amount",
"reasonable_timeout",
"resource_binding",
"response_size_within_limit",
"content_type_sane",
"structured_response_sane",
"challenge_stable",
"within_intended_spend"
],
"type": "object"
},
"decision": {
"enum": [
"ALLOW",
"CAUTION",
"BLOCK"
],
"type": "string"
},
"errors": {
"items": {
"additionalProperties": false,
"properties": {
"code": {
"enum": [
"HTTPS_REQUIRED",
"INVALID_URL",
"SELLER_UNREACHABLE",
"SELLER_TIMEOUT",
"UNSAFE_REDIRECT",
"UNSAFE_REDIRECT_CREDENTIALS",
"HTTPS_DOWNGRADE",
"REDIRECT_LOOP",
"EXCESSIVE_REDIRECTS",
"EXPECTED_402",
"INVALID_X402_CHALLENGE",
"UNSUPPORTED_X402_VERSION",
"UNSUPPORTED_PAYMENT_SCHEME",
"NETWORK_MISMATCH",
"DUPLICATE_PAYMENT_REQUIREMENTS",
"CONFLICTING_PAYMENT_REQUIREMENTS",
"AMBIGUOUS_PAYMENT_OPTIONS",
"INVALID_PAYMENT_ASSET",
"NON_CANONICAL_USDC",
"INVALID_PAY_TO",
"UNSAFE_RECEIVER",
"RECIPIENT_RPC_UNAVAILABLE",
"INVALID_PAYMENT_REQUIREMENT",
"INVALID_PAYMENT_TIMEOUT",
"RESOURCE_BINDING_MISMATCH",
"INVALID_CONTENT_TYPE",
"RESPONSE_TOO_LARGE",
"MALFORMED_JSON",
"INVALID_RESPONSE_SCHEMA",
"NETWORK_CHANGED",
"ASSET_CHANGED",
"PAY_TO_CHANGED",
"PRICE_CHANGED",
"PAYMENT_REQUIREMENTS_MUTATED",
"PAYMENT_CHALLENGE_BODY_MISMATCH",
"INVALID_INTENDED_SPEND",
"PRICE_EXCEEDS_INTENT",
"AUTH_AMOUNT_MISMATCH",
"AUTH_ASSET_MISMATCH",
"AUTH_NETWORK_MISMATCH",
"AUTH_RECIPIENT_MISMATCH",
"CALLDATA_PAYER_MISMATCH",
"AUTH_RESOURCE_MISMATCH",
"AUTH_WINDOW_UNSAFE",
"TRANSACTION_SIMULATION_REVERTED",
"TRANSACTION_SIMULATION_RPC_UNAVAILABLE",
"SAFE_REDIRECT_FOLLOWED"
],
"type": "string"
},
"message": {
"type": "string"
}
},
"required": [
"code",
"message"
],
"type": "object"
},
"type": "array"
},
"intended_spend_usdc": {
"type": [
"number",
"null"
]
},
"latency_ms": {
"minimum": 0,
"type": "integer"
},
"methodology": {
"const": "live-security-v1",
"type": "string"
},
"network": {
"type": [
"string",
"null"
]
},
"payTo": {
"type": [
"string",
"null"
]
},
"payment_required": {
"type": "boolean"
},
"quoted_price_atomic": {
"type": [
"string",
"null"
]
},
"quoted_price_usdc": {
"type": [
"number",
"null"
]
},
"reachable": {
"type": "boolean"
},
"reason_codes": {
"items": {
"enum": [
"HTTPS_REQUIRED",
"INVALID_URL",
"SELLER_UNREACHABLE",
"SELLER_TIMEOUT",
"UNSAFE_REDIRECT",
"UNSAFE_REDIRECT_CREDENTIALS",
"HTTPS_DOWNGRADE",
"REDIRECT_LOOP",
"EXCESSIVE_REDIRECTS",
"EXPECTED_402",
"INVALID_X402_CHALLENGE",
"UNSUPPORTED_X402_VERSION",
"UNSUPPORTED_PAYMENT_SCHEME",
"NETWORK_MISMATCH",
"DUPLICATE_PAYMENT_REQUIREMENTS",
"CONFLICTING_PAYMENT_REQUIREMENTS",
"AMBIGUOUS_PAYMENT_OPTIONS",
"INVALID_PAYMENT_ASSET",
"NON_CANONICAL_USDC",
"INVALID_PAY_TO",
"UNSAFE_RECEIVER",
"RECIPIENT_RPC_UNAVAILABLE",
"INVALID_PAYMENT_REQUIREMENT",
"INVALID_PAYMENT_TIMEOUT",
"RESOURCE_BINDING_MISMATCH",
"INVALID_CONTENT_TYPE",
"RESPONSE_TOO_LARGE",
"MALFORMED_JSON",
"INVALID_RESPONSE_SCHEMA",
"NETWORK_CHANGED",
"ASSET_CHANGED",
"PAY_TO_CHANGED",
"PRICE_CHANGED",
"PAYMENT_REQUIREMENTS_MUTATED",
"PAYMENT_CHALLENGE_BODY_MISMATCH",
"INVALID_INTENDED_SPEND",
"PRICE_EXCEEDS_INTENT",
"AUTH_AMOUNT_MISMATCH",
"AUTH_ASSET_MISMATCH",
"AUTH_NETWORK_MISMATCH",
"AUTH_RECIPIENT_MISMATCH",
"CALLDATA_PAYER_MISMATCH",
"AUTH_RESOURCE_MISMATCH",
"AUTH_WINDOW_UNSAFE",
"TRANSACTION_SIMULATION_REVERTED",
"TRANSACTION_SIMULATION_RPC_UNAVAILABLE",
"SAFE_REDIRECT_FOLLOWED"
],
"type": "string"
},
"type": "array",
"uniqueItems": true
},
"scheme": {
"enum": [
"exact",
null
],
"type": [
"string",
"null"
]
},
"simulation": {
"additionalProperties": false,
"properties": {
"failure": {
"type": [
"string",
"null"
]
},
"status": {
"enum": [
"SUCCESS",
"REVERTED",
"UNAVAILABLE",
"UNKNOWN"
],
"type": "string"
}
},
"required": [
"status",
"failure"
],
"type": "object"
},
"warnings": {
"items": {
"additionalProperties": false,
"properties": {
"code": {
"enum": [
"HTTPS_REQUIRED",
"INVALID_URL",
"SELLER_UNREACHABLE",
"SELLER_TIMEOUT",
"UNSAFE_REDIRECT",
"UNSAFE_REDIRECT_CREDENTIALS",
"HTTPS_DOWNGRADE",
"REDIRECT_LOOP",
"EXCESSIVE_REDIRECTS",
"EXPECTED_402",
"INVALID_X402_CHALLENGE",
"UNSUPPORTED_X402_VERSION",
"UNSUPPORTED_PAYMENT_SCHEME",
"NETWORK_MISMATCH",
"DUPLICATE_PAYMENT_REQUIREMENTS",
"CONFLICTING_PAYMENT_REQUIREMENTS",
"AMBIGUOUS_PAYMENT_OPTIONS",
"INVALID_PAYMENT_ASSET",
"NON_CANONICAL_USDC",
"INVALID_PAY_TO",
"UNSAFE_RECEIVER",
"RECIPIENT_RPC_UNAVAILABLE",
"INVALID_PAYMENT_REQUIREMENT",
"INVALID_PAYMENT_TIMEOUT",
"RESOURCE_BINDING_MISMATCH",
"INVALID_CONTENT_TYPE",
"RESPONSE_TOO_LARGE",
"MALFORMED_JSON",
"INVALID_RESPONSE_SCHEMA",
"NETWORK_CHANGED",
"ASSET_CHANGED",
"PAY_TO_CHANGED",
"PRICE_CHANGED",
"PAYMENT_REQUIREMENTS_MUTATED",
"PAYMENT_CHALLENGE_BODY_MISMATCH",
"INVALID_INTENDED_SPEND",
"PRICE_EXCEEDS_INTENT",
"AUTH_AMOUNT_MISMATCH",
"AUTH_ASSET_MISMATCH",
"AUTH_NETWORK_MISMATCH",
"AUTH_RECIPIENT_MISMATCH",
"CALLDATA_PAYER_MISMATCH",
"AUTH_RESOURCE_MISMATCH",
"AUTH_WINDOW_UNSAFE",
"TRANSACTION_SIMULATION_REVERTED",
"TRANSACTION_SIMULATION_RPC_UNAVAILABLE",
"SAFE_REDIRECT_FOLLOWED"
],
"type": "string"
},
"message": {
"type": "string"
}
},
"required": [
"code",
"message"
],
"type": "object"
},
"type": "array"
},
"x402_valid": {
"type": "boolean"
},
"x402_version": {
"enum": [
2,
null
],
"type": [
"integer",
"null"
]
}
},
"required": [
"decision",
"reason_codes",
"checks",
"warnings",
"errors",
"reachable",
"payment_required",
"x402_valid",
"x402_version",
"scheme",
"network",
"asset",
"payTo",
"quoted_price_atomic",
"quoted_price_usdc",
"intended_spend_usdc",
"authorization",
"simulation",
"latency_ms",
"methodology"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-24T01:40:14.78Z",
"quality": {
"l30DaysTotalCalls": 4,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-24T01:40:14.438Z"
},
"resource": "https://arn-x402-payguard-payment-security.rajdeep-dutta-in.workers.dev/preflight",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Agent Reliability Network: ARN x402 PayGuard provides x402 payment security for autonomous AI agents. Check the seller before you pay with payment preflight and payment-challenge validation. Returns ALLOW, CAUTION, or BLOCK."
}What the leaf hashes
{"body":"52ec0e8ce7d204e9c8a205202192d1c62862522af7ddf6dc31f331a3d841baf3","id":71220,"kind":"listing","method":"baseline/1","observed_us":1793025481807640,"prev":null,"subject":"x402_bazaar:https://arn-x402-payguard-payment-security.rajdeep-dutta-in.workers.dev/preflight","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0x71ccb8955014fcf6c46dd17e59bb79c605e2c1237f16dd2b706a899f4154a1db
- 0x6bb6e2b6305e9db9552da8217a3b038389963f0ccb4d793efc1950f60f0bdabc
- 0xcbf22e0330b15660309e1316074224f7d9cf69ab4e34a71853889c7aed63466d
- 0x3458194d05e7c9fb7eb0b53ba521c04a3ef1b7546e3f41b2a4b4ccbd52cb753a
- 0x074737d123ad32c7b46e08aac30e97fe8e4ab5ecf905d64bc394ad948e9e78b2
- 0xddb3d77deccda98e6ccb9da5ff795714ad36024e300ab7d9404d0d0f233f796e
- 0xd677282b785960aeab6e3df6be63658c85bd1b5916dd895d40c3a01e676eae99
- 0xf5c83ebb51736782033a1e87d6f129f8104c6bd9c0ffecf378ff098232a53d58
- 0x4ebdbdd07264e5e29002d8a8a426a0d138ecbb21784ff0e8fd11d4cc5b44353b
- 0x7556bb3d28817b67074efa685b0f147185fdbaf6243b748a3e743db60711cd56
- 0x170ddfc94752b8644bb33b281e6fa15e2037a7340325b12b704591a5bd5381b4
- 0xef1802ec08c5a2efaca6aadccc58edcebeb620a019383dc0785f198c677a9427
- 0x06064dc1eb2363bec8c2a752e0a28aafc4bf0cb21d1b1b755821c1575bb77a96
- 0xc4fe2177880ea1b0e82b6fe4c270090fd0fbe5af3a42a8cbf6a6ba2fa35625f6
- 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
- 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae