Evidence row 123394

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://underground.substratesymposium.com/buy/black_hole_revelations"
    ]
  ],
  "name": "underground.substratesymposium.com/buy/black_hole_revelations",
  "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": "Black Hole Revelations — Physics essay on information paradox and reality breakdown for processing fundamental limits.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "content": "Physics essay on information paradox and reality breakdown for processing fundamental limits.",
              "delivered_at": "2026-04-24T10:00:00Z",
              "product": "black_hole_revelations",
              "title": "Black Hole Revelations"
            },
            "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": "2026-10-11T02:17:57.064Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-11T02:17:56.938Z"
    },
    "resource": "https://underground.substratesymposium.com/buy/black_hole_revelations",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Black Hole Revelations — Physics essay on information paradox and reality breakdown for processing fundamental limits."
}

What the leaf hashes

{"body":"eb87a6e8edc5b0a809781e45117f6da9b26abeb8407b853fcda27df804faafe6","id":123394,"kind":"listing","method":"baseline/1","observed_us":1793025623128105,"prev":null,"subject":"x402_bazaar:https://underground.substratesymposium.com/buy/black_hole_revelations","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. 0x973b1a8baad32250417cd76f11b370e3ab4c020966fde3e32936cb16f8ba2f4c
2. 0xcabbb696092767d0863839bba791513bd507ec6a6e0e229ec02ee4ba8ebfb16f
3. 0x86dd37a3c317d51ec7671bed297ceca70e161e20a87f7de836f325b5a5f1cf8d
4. 0x9510bd2d2f15e3ab59a9a054580cac947342436c30ef9a545cf72995bf1810c3
5. 0xd18b0bf7f2a02355e05ec721b89450e02e507568774b0cbc25588631e37142e7
6. 0x434f0a66a068245a331dab1d03005ad08ca1ec8e4ada797807d78141c81683c7
7. 0x176c34c0fb23847571159e53e8af74afa9d81c2c314db9e74853df457264eb81
8. 0xe66a8f24a77bc2ef9ecc03013ad7855ab19bdfa60eb263f8d8524327491da575
9. 0x71b0b534cd4e91b815cfc8f756a9c2e35e77f3892e37283b7c97c79b860730ec
10. 0x754fcde88a635fd610b97b1614bdabd78715f683ecb7fc4c8b16661d8784837a
11. 0x33109041c3d120f5b9ce2c3270a8fc409acfab4e749a0ff42fa0744354f87c17
12. 0xd43b73151a0c2d9a61f2ae73ed148938b0e6b05c81197f7eebbf95dba38a7004
13. 0xb314422bc93e7f1c0b706c67f5fff96c5ddf74934bb2fe8ab6291ae016907e37
14. 0x49062da782c4f73855ddd5fdd51840749f928b5f17d1ce75ac50f2d829104e72
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae