Evidence row 548401

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://nato.openverbs.com/v1/spell"
    ]
  ],
  "name": "Spell with the phonetic alphabet",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "Spell text using the NATO/ICAO phonetic alphabet (A→Alfa, B→Bravo, …), including digits and spaces (→Space). Characters with no phonetic spelling are clean 400s.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "text": "example"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "text": {
                      "description": "Text to spell (A-Z, 0-9, space).",
                      "minLength": 1,
                      "type": "string"
                    }
                  },
                  "required": [
                    "text"
                  ],
                  "type": "object"
                },
                "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"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T05:38:31.597Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T05:38:31.312Z"
    },
    "resource": "https://nato.openverbs.com/v1/spell",
    "serviceName": "Spell with the phonetic alphabet",
    "tags": [
      "nato phonetic spelling",
      "spell with nato alphabet",
      "icao alphabet api",
      "text to phonetic words",
      "radio spelling alphabet"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Spell text using the NATO/ICAO phonetic alphabet (A→Alfa, B→Bravo, …), including digits and spaces (→Space). Characters with no phonetic spelling are clean 400s."
}

What the leaf hashes

{"body":"bc8c88ea12695c0965a7faf652b6bc0e249408270910fc7fa9fa7d1962731843","id":548401,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133298623142,"prev":117314,"subject":"x402_bazaar:https://nato.openverbs.com/v1/spell","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x6c185c1febfbfbfc5e9e80864fa5fa7fc70b0df7237a0e0ea193b874661bea7b
2. 0x15410309368ee4ca92ca62daf454db8c7a02e4e43f6394213105e9b4fe42001c
3. 0x8b176357df169ab2d827323bda48f8e575bff3ddaed23d9468fa294b1cfbb1c6
4. 0xd5f18bc443ff9febb7700bbf9598106a219aa7e6bef7f88dd3a3d5ba780b3ee4
5. 0xb376b762106a88d57c173d0a1119ef50c2a63c86f457445ec52f20f7bf25ae56
6. 0x26be68ed511a17ac073aadb8067e4009ff989fe1735d2b8870419b532e1bd15e
7. 0xd7b379063c31f4efe923ff6a90b6ad1a319a86eb339b3954d8a226f2db1a791a
8. 0x4d2b58f6ea544d2db2c352104b20f2c4cf4f7c15e2b52e44aa5c5a02fd73dcd0
9. 0x573897d0f92865dae9b024ca9a8f8ac1ff541748c85162e597cdbca8b7e5aa29
10. 0xd47350fcc360ac37d551feaf6a243adc3bd7a11098b553c5bd80216fcc71b989
11. 0x6738484c4b0aa7fb26d54986679f59235c86aa66784f642b6275a0cbd7593ba2
12. 0xc78608c08428e27bbac3251f568868a865e1e442ea6f182a8fd2342173a5acaf
13. 0xa7e162a9119a39c37b96b3483510d3fd108f25676fe3a9584241629612b01526
14. 0xb2ae53d841a55a805fb4078b1a7d44e08a81aba4be3690bac3a5b4c366bf39da
15. 0x275720ecabb68df33eee92ae4fd70572a8d952d6c61c061c2869cfc3217aa5c5
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4