Evidence row 119920

Observed 26 Oct 2026, 14:40 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://saylorinnovations.com/api/fun/fact
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 720f8c80e62344281005ea6311d9d3054a8ea6f16c15b862a990cc137e5d6ea6
Leaf: 0x6446e49bd17eb51420150ac574cc31c6638372279820e3c8e34bd7831859ef6e

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/fun/fact"
    ]
  ],
  "name": "Saylor Innovations Utilities",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:fun:fact",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
          "memo": "saylor:fun:fact",
          "reference": "A7wGQYWnmCyo5zLdCXiTDZHLRxYwG3HBWT89V4rbepET",
          "session": "eyJhcnRpY2xlSWQiOiJmdW46ZmFjdCIsInJlZmVyZW5jZSI6IkE3d0dRWVdubUN5bzV6TGRDWGlURFpITFJ4WXdHM0hCV1Q4OVY0cmJlcEVUIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIxNzgxNzc5NTB9.66dIXhTqCS_PBrLFmnpYA-1BHop8w8nZxFhc67dJIIM"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Random fact - one short factual statement with its topic tag, drawn from a curated pool; the response includes the pool size",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "fact": "Sharks are older than trees: they appeared more than 400 million years ago.",
              "pool_size": 39,
              "topic": "evolution"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "POST",
                    "PUT",
                    "PATCH",
                    "DELETE",
                    "HEAD"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "fact": {
                      "description": "The fact as one self-contained sentence",
                      "type": "string"
                    },
                    "generated_at": {
                      "description": "Time this response was generated (UTC)",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "pool_size": {
                      "description": "Number of facts the service draws from",
                      "type": "number"
                    },
                    "topic": {
                      "description": "Subject area tag, e.g. biology, history, computing",
                      "type": "string"
                    }
                  },
                  "required": [
                    "fact",
                    "topic"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "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/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-16T19:14:18.008Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-16T19:14:17.776Z"
    },
    "resource": "https://saylorinnovations.com/api/fun/fact",
    "serviceName": "Saylor Innovations Utilities",
    "tags": [
      "random fact",
      "trivia",
      "knowledge",
      "x402 test",
      "utility"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Random fact - one short factual statement with its topic tag, drawn from a curated pool; the response includes the pool size"
}

What the leaf hashes

{"body":"720f8c80e62344281005ea6311d9d3054a8ea6f16c15b862a990cc137e5d6ea6","id":119920,"kind":"listing","method":"baseline/1","observed_us":1793025616942050,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/fun/fact","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).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON