Evidence row 785816

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://wafermap.xyz/v1/gemma-4"
    ]
  ],
  "name": "wafermap.xyz/v1/gemma-4",
  "owner_address": "0xefa0fdf4ca8fd79227fb9a19e5cfd24a2a864b81",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xefa0FDf4Ca8FD79227fb9A19E5CFd24a2A864B81",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
        "extra": {
          "name": "Global Dollar",
          "version": "1"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:4663",
        "payTo": "0xefa0FDf4Ca8FD79227fb9A19E5CFd24a2A864B81",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:42161",
        "payTo": "0xefa0FDf4Ca8FD79227fb9A19E5CFd24a2A864B81",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:137",
        "payTo": "0xefa0FDf4Ca8FD79227fb9A19E5CFd24a2A864B81",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "5QEQqwNpYFetT6zYi5YqJUtzoy6aQgtRQdZNcWus7JVP",
        "scheme": "exact"
      }
    ],
    "description": "Gemma 4 26B — Google's open model. The cheapest way to get a good answer.",
    "extensions": {
      "bazaar": {
        "category": "llm",
        "info": {
          "input": {
            "body": {
              "max_tokens": 1024,
              "prompt": "Explain x402 in two sentences."
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "receipt": {
                "amountUsd": 0.002,
                "asset": "USDC",
                "ms": 1200,
                "network": "eip155:8453",
                "payer": "0x…",
                "tx": "0x…"
              },
              "resource": "gemma-4",
              "result": "{ text, model, usage }"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "max_tokens": {
                      "description": "Output cap. 2048 at most, 1024 by default.",
                      "exclusiveMinimum": 0,
                      "maximum": 2048,
                      "type": "number"
                    },
                    "prompt": {
                      "description": "What you want, in plain words.",
                      "maxLength": 24000,
                      "minLength": 1,
                      "type": "string"
                    },
                    "system": {
                      "description": "Optional instructions that shape every answer.",
                      "maxLength": 8000,
                      "minLength": 1,
                      "type": "string"
                    }
                  },
                  "required": [
                    "prompt"
                  ],
                  "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": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793166422/bazaar-icons/5ef39b93b2d49e3c.png",
    "lastUpdated": "2026-10-28T17:32:26.269Z",
    "quality": {
      "l30DaysTotalCalls": 145,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-28T13:01:03.624Z"
    },
    "resource": "https://wafermap.xyz/v1/gemma-4",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Gemma 4 26B — Google's open model. The cheapest way to get a good answer."
}

What the leaf hashes

{"body":"cd88aa2a8017c05f8ec6c7a7ffc69be9ec5dd292916dfa72e62559a4901e3016","id":785816,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793211280330069,"prev":752005,"subject":"x402_bazaar:https://wafermap.xyz/v1/gemma-4","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0xf3013a2fa53a38fa38e1c6c011def7e8db841d3573f818ae68f9f61d07b6df04
2. 0x795707df3a472dbfebb44872dda1bf5550c0ab63e8f6b124ba93397e6fea248d
3. 0xc88cd8bc0b82015aef3470ccf1ccb944f1ea1ff22096c3ed51b30ee4af6f1cd0
4. 0x648004c729a318f7ee4e34b577de2da7e5cc5bcbe6a8fafe90f6112ce71f8428
5. 0xbfcccbf29f9a44e1d34234453c1c3d5a15249ad729919fd1fe151b98598bcfdf
6. 0x89deb44be71ffb5d5f7a61ea1ace495a064f0855fcdde1a83f3e00ea1f19ffee
7. 0x7f049858f9dedda015a0baa255c8664d68b2ad793a7877404b5e74688859c4df
8. 0x9d4c71c796f1a02cdcadaf47b990dfe5a15e049470cfe5ffd3a73c97e558be54
9. 0x5422f572d4f061a1359ee5b94e9e0f9f0b47a0401ee8bd309ce11a6c09c1641a
10. 0x6ebe7e8a603e095b9cf24a8a422219780fe8c962987c3046ade64ac48bac4acd
11. 0x39165326e233b82152c1f0f73531606727580cfa8958cc7dadb45d2181ae6082
12. 0xa89a794e9d78d6d0f6a02ae33432ffbce4feb90f5c68a18a04c66467fad79af2
13. 0x39568e4b66f4f298b6b05b4f12c8e6166de92e0449cb11e61f1e4113f17fbc82
14. 0xfb2274fa79452c1e494276a3ee3eadb7c66f76a08a80f6923416f3d591053e02
15. 0x33bfb51cb957137510d8a1502cd50241c4c0982e2741290f3b8f2d2b1e69de70
16. 0xef2ebd45f2cfd41dc3eb213cc4cc144c46b7e9ead2de0b9f627463bad16e3ec8
17. 0x67e9ff3e48c515135fcf3df2675aa4996d35d4a328ce41588ee1a7d93347c823
18. 0xe6cfe00ae4e02bc12327e45b5f3334ea5850ba3bcc8e3101d30a8189856a95af

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae