Evidence row 118405

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://pay.omnidev.tech/x402/chat-small"
    ]
  ],
  "name": "OmniProvider",
  "owner_address": "0x1993330e3cc36b4a68b5790efbcfe296b02efedb",
  "raw": {
    "accepts": [
      {
        "amount": "8000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1993330e3cC36B4a68B5790EFBcfE296b02efeDB",
        "scheme": "exact"
      }
    ],
    "description": "Pay-per-call chat completion on the small tier. One request returns one assistant message, limited to 8000 input and 1024 output tokens, at 0.008 USDC per call on Base. Payment settles after the response is produced. A client nonce header makes a retry free of a second charge.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "max_tokens": 64,
              "messages": [
                {
                  "content": "Summarize the x402 payment flow in one sentence.",
                  "role": "user"
                }
              ]
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "ok": true,
              "result": {
                "choices": [
                  {
                    "finish_reason": "stop",
                    "index": 0,
                    "message": {
                      "content": "A server answers 402 with payment requirements, the client signs a payment, and the server settles it after serving.",
                      "role": "assistant"
                    }
                  }
                ],
                "id": "chatcmpl-example",
                "model": "auto",
                "object": "chat.completion",
                "usage": {
                  "completion_tokens": 24,
                  "prompt_tokens": 18,
                  "total_tokens": 42
                }
              },
              "settled": true
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "max_tokens": {
                      "description": "Upper bound on output tokens.",
                      "maximum": 1024,
                      "minimum": 1,
                      "type": "integer"
                    },
                    "messages": {
                      "description": "Conversation, oldest first.",
                      "items": {
                        "additionalProperties": false,
                        "properties": {
                          "content": {
                            "description": "Message text.",
                            "type": "string"
                          },
                          "role": {
                            "enum": [
                              "system",
                              "developer",
                              "user",
                              "assistant"
                            ],
                            "type": "string"
                          }
                        },
                        "required": [
                          "role",
                          "content"
                        ],
                        "type": "object"
                      },
                      "maxItems": 64,
                      "minItems": 1,
                      "type": "array"
                    },
                    "model": {
                      "description": "auto selects the tier model.",
                      "enum": [
                        "auto",
                        "llama-3.1-8b",
                        "kimi-k3"
                      ],
                      "type": "string"
                    },
                    "prompt": {
                      "description": "Shorthand for one user message; used when messages is absent.",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                },
                "headers": {
                  "additionalProperties": {
                    "type": "string"
                  },
                  "properties": {
                    "X-Omni-Client-Nonce": {
                      "description": "Present on every request that carries a payment credential: a random base64url value, 22-128 characters, new for each payment. A paid request without it is answered 400 client_nonce_required and is not charged.",
                      "pattern": "^[A-Za-z0-9_-]{22,128}$",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "facilitator_tx": {
                      "type": "string"
                    },
                    "ok": {
                      "type": "boolean"
                    },
                    "result": {
                      "properties": {
                        "choices": {
                          "type": "array"
                        },
                        "id": {
                          "type": "string"
                        },
                        "model": {
                          "type": "string"
                        },
                        "object": {
                          "type": "string"
                        },
                        "usage": {
                          "type": "object"
                        }
                      },
                      "required": [
                        "choices"
                      ],
                      "type": "object"
                    },
                    "settled": {
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "ok",
                    "result"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-17T01:02:32.499Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-17T01:02:32.227Z"
    },
    "resource": "https://pay.omnidev.tech/x402/chat-small",
    "serviceName": "OmniProvider",
    "tags": [
      "llm",
      "chat-completions",
      "openai-style",
      "pay-per-call",
      "prepaid-credits"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Pay-per-call chat completion on the small tier. One request returns one assistant message, limited to 8000 input and 1024 output tokens, at 0.008 USDC per call on Base. Payment settles after the response is produced. A client nonce header makes a retry free of a second charge."
}

What the leaf hashes

{"body":"227d8a1075cbd7a1047604397484e5501ea9b25530b36bf8058edb410d058dcc","id":118405,"kind":"listing","method":"baseline/1","observed_us":1793025612993404,"prev":null,"subject":"x402_bazaar:https://pay.omnidev.tech/x402/chat-small","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. 0x45d6db6670591f6b3b5a6dd5379735147ddcfff2b0d62a698d716be966c845f4
2. 0x97b8f5385b11ee7170116c931f3f696aecbc9b0fe86e2344327b72f546177ffd
3. 0x576224bf527ce67db06eb1feb3ea9e268dd58f40149017cf7df0f6e5199e08b8
4. 0x2fc809cd235e3efd1934cbcbc668cda411bf8762f37e31d976c300c857fd9e0d
5. 0x741ec7bef2c30f00916c320b2463bd34caa55b592ea0df179fa16dccc037f1d5
6. 0x0ea17a22b1d82f875a4ae59f12077c88bffef1099f4d6ab4676730a9df1a3065
7. 0xa22d436bcba108315a187438a8208212e42520003054c908095211e99f08b224
8. 0x16d21a11745f7c1b505d91bff095e7a85e023926caa4c6059441c2e4524bdf04
9. 0x7383eacf65a565ab369246d681e8a7ad7900a05678a119c5d1d038481f5ed0a8
10. 0x6a1f5a35af750ae279aa449f09e871daec7daf61e24910bcb67b1594232df31c
11. 0x415bf66d9c632a887484603836ad3f90715af6f56ae73f0a5711497372ba0265
12. 0x804dd9d5afe0f1a780e24099fb6b21f5f20545893ea0eeddf5fb9114e2f3edd5
13. 0x54b29089c0a3cbbd6ddbe58944696110984dd5f418275cb1b77f957c56da8eab
14. 0x8b27a4c21bf4ba962fd008c8f4300bc6953764a5032b9ab0cfe696b318c45326
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae