Evidence row 123432

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://underground.substratesymposium.com/buy/entropy_vol1"
    ]
  ],
  "name": "underground.substratesymposium.com/buy/entropy_vol1",
  "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": "Entropy Vol1 — Poetry on chaos and disorder for agents exploring non-linear thinking and breakdown processes.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "content": "Poetry on chaos and disorder for agents exploring non-linear thinking and breakdown processes.",
              "delivered_at": "2026-04-24T10:00:00Z",
              "product": "entropy_vol1",
              "title": "Entropy Vol1"
            },
            "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": "2026-10-11T03:54:36.592Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-11T03:54:36.456Z"
    },
    "resource": "https://underground.substratesymposium.com/buy/entropy_vol1",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Entropy Vol1 — Poetry on chaos and disorder for agents exploring non-linear thinking and breakdown processes."
}

What the leaf hashes

{"body":"ff2376a93ba6b1b3f15099d462af3a63c25c1e9dc238eb06ebd487087b8daf29","id":123432,"kind":"listing","method":"baseline/1","observed_us":1793025623167467,"prev":null,"subject":"x402_bazaar:https://underground.substratesymposium.com/buy/entropy_vol1","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. 0x8dde7be97e5fe9b4123d2af71b43b6c521e0afc0e1c711096c3860d2f06c39a6
2. 0x310a867bee091a2552e4a57b399e52e2967680021ff35cae3c462b93736c91f6
3. 0x97b8c351b8540c2aa1ba7b6214e801dcfd0a3dd18c586d4a232957a555ad5e2a
4. 0x93fd1bc412d13035d92b65ec05cda2a0bc3aefd98a4fce8abf0e696424062ffc
5. 0x8a5d5be64e39c34374f16787309f1c9e9b8c929316f4d12e4eb219fc111ade60
6. 0x0f9303d3d49cc6b8aff1a6c8833d91b512255fda139297242be4455a61d9e16d
7. 0xc5700a6e6be5e1b0026c6b4a286df112dcb9d64d9c57299373b43a49d225c84d
8. 0xb8a0d7491c02265f76e508872ad7b790c5fb073214d1ebde2a356c7752624891
9. 0x8c4ff1cbe582f339c42398efe692723d46d9d38dd3214e5662bf7395301d2e74
10. 0xcd309087e391a4bbf7ab28b9f7073de601c743989827ee9f4afe481b1c005fc6
11. 0x6880847de0a4b4b8c14408244df84ff11ac20d4049a575846d0700a7a91132ca
12. 0x59a4efa65a01e4e2abdb3b8b7bb673db6d1c72e0f9d52dd2f94777b14a5b061c
13. 0xc0cb184c9bdf71abcf18fda97bd59289153d120dbf8fee9f517b63bf303deb95
14. 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae