Evidence row 37824

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.hydratrader.ai/v1/keywords"
    ]
  ],
  "name": "x402.hydratrader.ai/v1/keywords",
  "owner_address": "0x55d06e282a699710e03088c218a9e79d2b1616fc",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x55d06e282a699710e03088c218a9e79d2b1616fc",
        "scheme": "exact"
      }
    ],
    "description": "Extract keywords: Verb-path alias of POST /v1/cheap-errand ($0.01 USDC). Same handler + payment terms; path defaults task=extract_keywords when body.task omitted. Cheap agent glue for buyer-supplied text. Base via x402. No API key.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "input": "x402 lets agents pay for APIs with USDC via HTTP 402.",
              "options": {
                "max_words": 40
              }
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "client_ref": null,
              "endpoint": "cheap-errand",
              "next_tasks": [
                {
                  "endpoint": "https://x402.hydratrader.ai/v1/cheap-errand",
                  "example_body": {
                    "input": "x402 lets agents pay for APIs with USDC via HTTP 402.",
                    "task": "extract_keywords"
                  },
                  "method": "POST",
                  "price_usd": "0.01",
                  "task": "extract_keywords",
                  "why": "Ranked keywords from the same text"
                }
              ],
              "ok": true,
              "result": {
                "keywords": null,
                "label": null,
                "meta": {
                  "chars_in": 58,
                  "model_hint": "fast"
                },
                "sentiment": null,
                "text": "x402 is an HTTP 402 micropayment protocol so agents can pay USDC for API calls."
              },
              "task": "extract_keywords",
              "usage": {
                "latency_ms": 420,
                "price_usdc": "0.01"
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "client_ref": {
                      "type": "string"
                    },
                    "input": {
                      "maxLength": 8000,
                      "type": "string"
                    },
                    "options": {
                      "type": "object"
                    },
                    "task": {
                      "enum": [
                        "summarize",
                        "rewrite",
                        "classify",
                        "extract_keywords",
                        "sentiment",
                        "translate"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "input"
                  ]
                },
                "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"
        }
      }
    },
    "lastUpdated": "2026-10-26T12:01:21.847Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-26T12:01:21.479Z"
    },
    "resource": "https://x402.hydratrader.ai/v1/keywords",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Extract keywords: Verb-path alias of POST /v1/cheap-errand ($0.01 USDC). Same handler + payment terms; path defaults task=extract_keywords when body.task omitted. Cheap agent glue for buyer-supplied text. Base via x402. No API key."
}

What the leaf hashes

{"body":"c848e3633c493d7867189bea11b76fef0d23cf507b80a8692d628bc4b9a63aae","id":37824,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025391062584,"prev":null,"subject":"x402_bazaar:https://x402.hydratrader.ai/v1/keywords","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. 0xc77d9f7d19e76b32ad8c7a541beaa443a4774a0c5f6e05b623b4f4bfae8761da
2. 0xf0e09d59d9d9b1b6d382833f7935ab8a4c625a1eb4559533837f3553ac491eff
3. 0xd634ea38a44a762b2549d4278558db1ecf6a75a574b11e4d3193b90ac257fd9f
4. 0x2231f293f8ed9f3b8e3ca35b5cc0a67f503ceea1f19768bad2f3e76305166f6f
5. 0xbbcb4d244681a1249752cdea32d368aaac9074367ce9344ddbaf373269c41d5e
6. 0x3a532ed443b753d481a5287d1609d7ae1ed8f73099da8772984dbfd680987859
7. 0xbfa9924db7e01cdff1920fb7d387d4930a2ebce598f6a39b912fc153e39bae83
8. 0x574da29c95265eeaa68bb35a2e7b3b499b558a2d2400d021c856735bb4eb0fea
9. 0x8749938965d5fa044b295e6976ca33f63f6cf2ab1744361eac55e6ca795da107
10. 0xc6ae85d609e7d5890f74a3f5d3b2ebae263f9ec4025f03a326b914e508ffffd3
11. 0xed975d3cf9a825217ed3ef7c3e4522f054cfe35b47c462678d64461a93581906
12. 0x9d99c5dad23613921cdfabc849c2dd3c97729992eaa05c4dab5e86e83ed6d220
13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae