Evidence row 279547

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://anansidata.xyz/paid/intel/model-advisor"
    ]
  ],
  "name": "Anansi Model Advisor",
  "owner_address": "0x6d7a2d65b26a87134c0571fb1baaa248eb0a291b",
  "raw": {
    "accepts": [
      {
        "amount": "50000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x6D7a2D65B26a87134c0571fb1baaA248eB0a291B",
        "scheme": "exact"
      }
    ],
    "description": "Cheapest LLM meeting your constraints (price/context/modality) PLUS every price change and deprecation in the window. Providers publish only today's catalog and overwrite it — the change history exists nowhere else",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "discoverable": true,
            "method": "GET",
            "queryParams": {
              "max_prompt_price": 0.000001,
              "min_context": 128000,
              "modality": "text",
              "window_s": 604800
            },
            "type": "http"
          },
          "output": {
            "example": {
              "charged": true,
              "results": {
                "candidates": [
                  {
                    "context": 512000,
                    "model": "vendor/model",
                    "price_prompt": 0
                  }
                ],
                "deprecations": [],
                "matching_count": 364,
                "price_changes_in_window": []
              }
            },
            "format": "application/json",
            "schema": {
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "properties": {
                "charged": {
                  "description": "Whether payment settled for this call.",
                  "type": "boolean"
                },
                "provenance": {
                  "description": "Where the data came from and under what terms.",
                  "properties": {
                    "cadence_s": {
                      "description": "Seconds between observations.",
                      "type": [
                        "integer",
                        "null"
                      ]
                    },
                    "dataset": {
                      "type": "string"
                    },
                    "license": {
                      "description": "public: raw values redistributable. derived_only: only computed analytics are served. internal: never served.",
                      "enum": [
                        "public",
                        "derived_only",
                        "internal"
                      ],
                      "type": "string"
                    },
                    "method": {
                      "type": "string"
                    },
                    "source": {
                      "description": "Upstream API or feed.",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "results": {
                  "description": "Ranked candidates plus the changes affecting them.",
                  "properties": {
                    "candidates": {
                      "items": {
                        "properties": {
                          "context": {
                            "description": "Tokens.",
                            "type": "integer"
                          },
                          "model": {
                            "type": "string"
                          },
                          "price_prompt": {
                            "description": "USD per prompt token.",
                            "type": "number"
                          }
                        },
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "deprecations": {
                      "items": {
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "matching_count": {
                      "type": "integer"
                    },
                    "price_changes_in_window": {
                      "items": {
                        "type": "object"
                      },
                      "type": "array"
                    }
                  },
                  "type": "object"
                }
              },
              "required": [
                "results"
              ],
              "type": "object"
            },
            "type": "object"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "max_prompt_price": {
                      "description": "Max USD PER PROMPT TOKEN (not per million).",
                      "type": "number"
                    },
                    "min_context": {
                      "default": 0,
                      "description": "Minimum context window in TOKENS.",
                      "type": "integer"
                    },
                    "modality": {
                      "description": "Substring of the modality string, e.g. text or image.",
                      "type": "string"
                    },
                    "window_s": {
                      "default": 604800,
                      "description": "Change look-back in SECONDS.",
                      "type": "integer"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T19:07:12.829Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-24T15:19:06.169Z"
    },
    "resource": "https://anansidata.xyz/paid/intel/model-advisor",
    "serviceName": "Anansi Model Advisor",
    "tags": [
      "llm",
      "model-selection",
      "pricing",
      "benchmarks",
      "ai"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Cheapest LLM meeting your constraints (price/context/modality) PLUS every price change and deprecation in the window. Providers publish only today's catalog and overwrite it — the change history exists nowhere else"
}

What the leaf hashes

{"body":"7754ca85e7d7113c5e07c849c9fd4d6c29e12533881b4ad559ccf8cefe1d9a1b","id":279547,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793042325452114,"prev":64417,"subject":"x402_bazaar:https://anansidata.xyz/paid/intel/model-advisor","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. 0x8428e71dae244d656c08efb85d641c611978a3550c4a834ad8d733e5ce2e9361
2. 0x5b06b1079db49c79130bb224df8a783b22b478aeeb91ebd744f4136d5a9911da
3. 0x9ba892c1e053c20310d5fd097f805ad867967d57e78d8ed530e85a3dbcd6069e
4. 0x491bcf38a871c2d3a36bf1de33b8f635831435545f65d37072381ca6044fd61b
5. 0x1dd733b93dde8559fefc1a491d379622e59db61f5aa039182e3bba8824cd6892
6. 0x820fab0b80adbbd54bc806d69671e2ce133f3a1ebebdf8610530cdb8803279cf
7. 0xabd00d1396964bb9605a97175037eab80d60fd6e3eaed140b6660d556ef76a14
8. 0xddb92c45d6a2eff84cfcdb312699cb8aec40d8d794a4ec24a146f4bf73a6568a
9. 0xbc133685799c0c4b7637a568865c5e514982efccff17b31c03225489c9c8041a
10. 0x18033a2c4d97bdf70116da2594b654dbb6f1d12267646015d8db5a14fd3724c4
11. 0xdb4295ae338449b07243daebee8c36f16b3aaca1599a8f860eb80e22bca21e79
12. 0xfdaa032291ded0df2cf35d6e9dc6e7a2643d0fe027dd3ab321971f1f7bf69147
13. 0x91c2ae93ec20c7fed5088112fe3941ca622dfb3f8f1022c4844726c361244bd4
14. 0x0eff463856b0992d53ab7d8c0b97c71541413358bdd445710c1e4b6aeb4d8f78
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae