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Evidence row 67749

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://api.neurodynamic.tech/v1/audio/speech
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
0c3c702ccab4720ad23b85ca445f3c35e79aabf251d5c22363b99347ba0a7f9b
Leaf
0xf2ef455b90baf38e64f98a18c13d04f1bfbf4efbce7bc9bf82152044c9ab293b

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.neurodynamic.tech/v1/audio/speech"
    ]
  ],
  "name": "api.neurodynamic.tech/v1/audio/speech",
  "owner_address": "0xc9ec9b779e5e94a8c580bb7f9f79c3d7dc113cd0",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xc9ec9B779E5E94a8c580bB7f9F79C3D7dC113cd0",
        "scheme": "exact"
      }
    ],
    "description": "Introductory pricing. Catalogue narration: 0.005 USDC on Base, up to 1,000 characters, MP3. Seven English voices. No account, reference upload or human approval. Read https://api.neurodynamic.tech/narration. Authorisation verified before work; settlement after successful audio. Retry identical body and proof for 12 hours without a second charge. Generated audio may be reviewed privately by the operator during this temporary quality-review period. Quoted tier price: 0.005 USDC.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "input": "Hello from NeuroDynamic.",
              "voice": "bf_emma"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": "<MP3 bytes>",
            "format": "audio/mpeg",
            "type": "binary"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "input": {
                      "maxLength": 1000,
                      "type": "string"
                    },
                    "model": {
                      "enum": [
                        "kokoro"
                      ]
                    },
                    "response_format": {
                      "enum": [
                        "mp3"
                      ]
                    },
                    "speed": {
                      "enum": [
                        1
                      ]
                    },
                    "stream": {
                      "enum": [
                        false
                      ]
                    },
                    "voice": {
                      "enum": [
                        "af_heart",
                        "af_bella",
                        "bf_emma",
                        "bf_alice",
                        "bm_george",
                        "am_michael",
                        "am_fenrir"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "input"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "description": "Binary audio/mpeg; PAYMENT-RESPONSE receipt header",
                  "type": "string"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-24T22:25:20.477Z",
    "quality": {
      "l30DaysTotalCalls": 214,
      "l30DaysUniquePayers": 6,
      "lastCalledAt": "2026-10-24T22:25:20.006Z"
    },
    "resource": "https://api.neurodynamic.tech/v1/audio/speech",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Introductory pricing. Catalogue narration: 0.005 USDC on Base, up to 1,000 characters, MP3. Seven English voices. No account, reference upload or human approval. Read https://api.neurodynamic.tech/narration. Authorisation verified before work; settlement after successful audio. Retry identical body and proof for 12 hours without a second charge. Generated audio may be reviewed privately by the operator during this temporary quality-review period. Quoted tier price: 0.005 USDC."
}

What the leaf hashes

{"body":"0c3c702ccab4720ad23b85ca445f3c35e79aabf251d5c22363b99347ba0a7f9b","id":67749,"kind":"listing","method":"baseline/1","observed_us":1793025464731821,"prev":null,"subject":"x402_bazaar:https://api.neurodynamic.tech/v1/audio/speech","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).

  1. 0xf2ef174d790c359c5478a372583dd913736fdcc0b466ec66a7cc7a7a78e681e1
  2. 0xbd71b9721b78dd4e191df5ec646625f1c45bc12617985e191c35833c3b9a6484
  3. 0x3aa32d1cf9dcd21d19cafd08465bf49679b696831adfc070be660c9163e0f3bc
  4. 0x2bfc99a2ae024c368599c0d75ae3310cc5fd42fb8bc44e3c56f143812c384a95
  5. 0x5b5123e0c0071a0528371fc594ac1c2abc455d99dc91d04c14c949be64e8b7d5
  6. 0x1470769c471bab14d5f09901746458e74cb40ae9992281473cfbef6d22ed6853
  7. 0x234445f6b1ee0594c8bb76ff59eed9c98c5004cea043747eb06a4fd6efb34167
  8. 0xee175608a167bcbc608ba5c2b35ff5ad4a500d29c2153dc9521775c47bdc1421
  9. 0xd868fa014cff5e42bd1185b288fc98ef2e85030d29f634923b1031bcb6453bc5
  10. 0x37ff56772095e9ced201f1cdf9a05114c0dce4806827908799f75ad05e027ec4
  11. 0xed3de41377d308fca21bfc95ef194b731c0ae2a53b6db64d80352c5f19d0e790
  12. 0x3e439c99553dde4ddc1a9189bc043fa92a4b6b41e39e7e6b21c10148f9558a78
  13. 0xa26f0437cba4d7d64f1cf98bf4f490e1ebb6f66a5e2331537b7ba8b3061084e0
  14. 0xd769d41500075835c3b2f9184d223699fb983fd05c29fbcb44d964abc7ee380d
  15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
  16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
  17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON