Evidence row 73475

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://dev.kagurazaka.dev/v1/decode"
    ]
  ],
  "name": "x402 Dev Tools",
  "owner_address": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
        "scheme": "exact"
      }
    ],
    "description": "Decodes a PAYMENT-REQUIRED, PAYMENT-SIGNATURE or PAYMENT-RESPONSE header (x402 v2, or X-PAYMENT / X-PAYMENT-RESPONSE of v1), base64 or JSON, detecting which it is. Explains it in plain terms (price in dollars, network, payer and payee, validity window, explorer link) and lists problems: wrong USDC EIP-712 domain, expired or not-yet-valid authorizations, amount or payee mismatches, missing Bazaar extension.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "header": "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"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "accepts": [
                {
                  "network": "eip155:8453",
                  "network_name": "Base",
                  "pay_to": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
                  "price_usd": 0.001,
                  "scheme": "exact"
                }
              ],
              "decoded": {
                "x402Version": 2
              },
              "findings": [
                {
                  "level": "info",
                  "message": "no bazaar extension: the CDP Bazaar lists the resource only with it (declareDiscoveryExtension)"
                }
              ],
              "kind": "payment-required",
              "summary": "Pay $0.001 on Base for https://api.example.com/v1/weather",
              "x402_version": 2
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "header": {
                      "description": "the header value (base64 or JSON); a leading 'Header-Name:' is ignored",
                      "type": "string"
                    },
                    "kind": {
                      "description": "default auto",
                      "enum": [
                        "payment-required",
                        "payment-signature",
                        "payment-response",
                        "auto"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "header"
                  ]
                },
                "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": {
                  "properties": {
                    "accepts": {},
                    "decoded": {},
                    "findings": {},
                    "kind": {},
                    "summary": {},
                    "x402_version": {}
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-25T20:35:39.912Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-25T20:35:39.743Z"
    },
    "resource": "https://dev.kagurazaka.dev/v1/decode",
    "serviceName": "x402 Dev Tools",
    "tags": [
      "x402",
      "debugging",
      "payment header",
      "developer tools"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Decodes a PAYMENT-REQUIRED, PAYMENT-SIGNATURE or PAYMENT-RESPONSE header (x402 v2, or X-PAYMENT / X-PAYMENT-RESPONSE of v1), base64 or JSON, detecting which it is. Explains it in plain terms (price in dollars, network, payer and payee, validity window, explorer link) and lists problems: wrong USDC EIP-712 domain, expired or not-yet-valid authorizations, amount or payee mismatches, missing Bazaar extension."
}

What the leaf hashes

{"body":"1437ef72f84dad79b9e5857a570b88d04abdaccd34f0342877cfbb02daaf584e","id":73475,"kind":"listing","method":"baseline/1","observed_us":1793025487681037,"prev":null,"subject":"x402_bazaar:https://dev.kagurazaka.dev/v1/decode","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xb5fcb84c57b506a262e7737af99fb463898f96f6c090945b25cb3d59a9856c8f
2. 0x8b7f4a8267f39c148fadeba87421f133dc98792d27519343f75bf3a50de12381
3. 0xd652f27bb231afa024e0a055b57c974032e22c1012c8f02c941dea1be4946ec1
4. 0x061de6f14c1055294e7da0f9f4da1d7c2331ad5a68e17ed44deea7827073d85e
5. 0x339b43c51d70b8b00cbeb1eda2986028b95eb5867963b8733e7544b9918eec2d
6. 0x57f63fefcc54ef808996de485b761c24ad52ddf00baef16341dc6bbbb177ec1c
7. 0xa5768dbddf131b615a14d86b2db9f3f85349855acec4d79b545ba20e3523f268
8. 0x84f0bb6a86255ba1efdf0271437fabe2a1e569512affd53f3145755164626c91
9. 0x8633a5cda531755faba1277f7dacbebfe7efbff11aa341081a1370d3c2506667
10. 0x083b213d55f010a12e9f2c7182db3d2a36f1323ef61111ababe982fa9f8e6726
11. 0xfa91c460bb9b05b6890b46e5326a89c9e487b6419bd4d84337c05040222a2e6c
12. 0x17930d484cab3f6850715eb0b77dd189c3c06f975cf9def12285fde3eb9b4234
13. 0x0d86419ca1dd0b62fd8b22ea2e8c74d441312cec3116a467bea429b43e026565
14. 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae