Evidence row 121195

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://shelf-production-43b5.up.railway.app/v1/sepolia/block-height/q1"
    ]
  ],
  "name": "shelf-production-43b5.up.railway.app/v1/sepolia/block-height/q1",
  "owner_address": "0x4a880a80e616f35b0a0754f00ac72cf745e5fc29",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:84532",
        "payTo": "0x4a880a80E616f35B0A0754F00ac72Cf745e5Fc29",
        "scheme": "exact"
      }
    ],
    "description": "Current block height for Base Sepolia. Returns the latest block number as an integer, read from the chain at request time.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "blockHeight": "31000000",
              "network": "eip155:84532",
              "observedAt": "2026-09-17T15:00:00.000Z"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "blockHeight": {
                      "description": "Latest block number on Base Sepolia, decimal string",
                      "type": "string"
                    },
                    "network": {
                      "description": "CAIP-2 chain id, always eip155:84532",
                      "type": "string"
                    },
                    "observedAt": {
                      "description": "ISO 8601 time the chain was read",
                      "type": "string"
                    }
                  },
                  "required": [
                    "blockHeight",
                    "network",
                    "observedAt"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T12:31:34.371Z",
    "quality": {
      "l30DaysTotalCalls": 10,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-08T12:31:34.165Z"
    },
    "resource": "https://shelf-production-43b5.up.railway.app/v1/sepolia/block-height/q1",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Current block height for Base Sepolia. Returns the latest block number as an integer, read from the chain at request time."
}

What the leaf hashes

{"body":"8778ef4293a25509499f223055e86b8b8a32417f280cda9fd57d8c033c15bb0a","id":121195,"kind":"listing","method":"baseline/1","observed_us":1793025619456408,"prev":null,"subject":"x402_bazaar:https://shelf-production-43b5.up.railway.app/v1/sepolia/block-height/q1","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. 0x2274bb73b82c91f14446217045a0788356e81f1b14801565179aeaac92e30b9b
2. 0xe50f56c56343aefd33143abc17e717b7c72f878921731f5868105d8231595dd7
3. 0x90aadb49e6d4eddc7fc413bf74270d36c75c9fccf1daf20d64e2b7b7cc416be1
4. 0xe68c7fd125d8b5171758e401833edabf770d4fbca84fe347fb95137bd48115ce
5. 0x114cc6c3fba6a87507802189939146c60d277433384d61ca0bc5f45a946c4d3e
6. 0xbdd9917352c6def525cb98772b9c27d6102880137cc863ccdf7ca4d2b5911f02
7. 0x3bdfef5f9d5c148f86ff69822ddef9787b2cb4a9a75b14f87f08c4ad90ae22ee
8. 0x658e02808197003c3dbc79fd874c83b874ec6759f98da00339d3a459218b76ad
9. 0x17fd9be5d3acece21fa5c8c938982f0f0a90f5a69eddcae326055075bdbb52bf
10. 0xd81c3cf131471d45d342b29a60570fa24072a4e8fc4286cf312da4677e4d486d
11. 0xda2a271b0447c8ac22315d2ea7582e04968ddef46c7cbd29d7462934a9b3b37a
12. 0xac5b705d705b0f1bc42cf2ad1a7f1f197ea96178ce0704432cbb5d556e8671a4
13. 0x9d75d4d3ab6219edefa04be60b32fdd56be7a7672f370a5115f02f7b098ecd27
14. 0x9dfd312f3d4937f7cb144cee3987e8516f222932b4ea286605236d73cfa1ed16
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae