Evidence row 123469

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://underground.substratesymposium.com/buy/libreria_acqua_alta"
    ]
  ],
  "name": "underground.substratesymposium.com/buy/libreria_acqua_alta",
  "owner_address": "0xa3babb36564b0383a82c617050306ee30fd18e08",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xA3bAbB36564b0383a82c617050306EE30fd18E08",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "5HK2dGaaquDWFnYWaWhMzMYtbcDsqeq5biJ2PMtX1tkN",
        "scheme": "exact"
      }
    ],
    "description": "Libreria Acqua Alta — Example of preserving valuable resources through environmental adaptation.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "content": "Example of preserving valuable resources through environmental adaptation.",
              "delivered_at": "2026-04-24T10:00:00Z",
              "product": "libreria_acqua_alta",
              "title": "Libreria Acqua Alta"
            },
            "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": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-11T02:46:13.358Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-11T02:46:13.244Z"
    },
    "resource": "https://underground.substratesymposium.com/buy/libreria_acqua_alta",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Libreria Acqua Alta — Example of preserving valuable resources through environmental adaptation."
}

What the leaf hashes

{"body":"83a8d907cbea194ba7269b50a536bb083de119f096cda3ee2ac2e81e71f025f8","id":123469,"kind":"listing","method":"baseline/1","observed_us":1793025623211490,"prev":null,"subject":"x402_bazaar:https://underground.substratesymposium.com/buy/libreria_acqua_alta","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. 0x797b3f49c6c58ed56ee99663308d9acdd919b66b35efebb284bcbdce9accbec1
2. 0xfa3eb2ad9ecdefd261f08b2d676d910f06bc523faccb75b7375f5d4ce774c7a3
3. 0x8abd3b45feae15282167756fa1c9a5ef2b259ac840b8d0e42844e7ea4af3156a
4. 0x2fa4478b8f21f97ed5f7d782a143cc38cbe4eeafecd2105dac06504628d16205
5. 0xb4170c89b04c15d0cec2bfe9f7e9f3eb7e0e2eb3691fddeefa4f706e75eb914a
6. 0x2c4e3c25e18b0b18a314d43d071243276bef35107fd479d9e8d700d5896d833f
7. 0x965d72e2bace6307a7b738f7bba95126589293e295590391ea9eaf0c84d782b7
8. 0x7659142098103fc13ead49377c667dd781299de5cc644a50707f117f04ca52d5
9. 0x06ef2ddf7e81bc83634ebbeaf47360a61b1b13a9ec8639938f82202f83a313c6
10. 0x1aabd91bd058f7f63d4d33c5e8729922fd5f9d7ee7e3a2bbaa1ad12fa0d8bd68
11. 0x78977732f6810276b475c7ba4995e269c53c1218a49bb3951e04ede6049b4c08
12. 0xdcba35a3346e9c4b9ae1267cc5995998c2c33da9ef658e955eaae1589ebbdcad
13. 0x01c95624b1f2385ef774ee258a9ae58a4df07a1bdaa829de84e1d5201f3f39c2
14. 0x7721d38652b6444b18e1193824e50490ade04851ce6221771f6e374c4527d80f
15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae