Evidence row 123528

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://underground.substratesymposium.com/buy/spacetime_fabric"
    ]
  ],
  "name": "underground.substratesymposium.com/buy/spacetime_fabric",
  "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": "Spacetime Fabric — Relativity essay on bent reality for flexible thinking about fixed-seeming constraints.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "content": "Relativity essay on bent reality for flexible thinking about fixed-seeming constraints.",
              "delivered_at": "2026-04-24T10:00:00Z",
              "product": "spacetime_fabric",
              "title": "Spacetime Fabric"
            },
            "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": "2026-10-11T02:06:29.435Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-11T02:06:29.322Z"
    },
    "resource": "https://underground.substratesymposium.com/buy/spacetime_fabric",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Spacetime Fabric — Relativity essay on bent reality for flexible thinking about fixed-seeming constraints."
}

What the leaf hashes

{"body":"986f1f930cd8d616b622ddcfc1862623e46aff60988e25b37e4d8c83a0c824f8","id":123528,"kind":"listing","method":"baseline/1","observed_us":1793025623286171,"prev":null,"subject":"x402_bazaar:https://underground.substratesymposium.com/buy/spacetime_fabric","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. 0xd4bcfd4c02e3d1290296f03457c677be76b334ff08c96dd6dfb08cc751c9f1fe
2. 0x71bff1531662b695f0576b0bc32fa5f0a522489812231d76b17ad4fc0e87e316
3. 0x10d4e324adb4f45d24d7fe4ffb5b3378262dc429c352d9e96df1427dbc2ef361
4. 0x7fefde6dca51e8bc1e5ca05b1d6602a5035d033405c35f6fcaf8bc1389fa6c92
5. 0x28a79801a4c914cb58d3d589ffd7a47f0ac8fa48a098b9b92f733b558a778de6
6. 0xb9c4def8fd3b132d5057cca9b12249e18f7af8fc81623accb0d296a7ba56a838
7. 0x4cb0791a4f5b03fd1564d46b3630eb15ed6594dac13d86fe9bf4d17e440e24ec
8. 0x4bb1f29a765aa2660cef4713eae1ebd25621995f55675d05a60f92d4ed7581e7
9. 0xe68852d059df1a2763d9eb9e407ab688f37fed3121a3f760478f3f9ea3d2d8a0
10. 0x692eeb197968cd5781b6a621b2983348b30fee6c6aea503398abf2207d9af77b
11. 0x13af2618b202e3256bff92107d30a646eb897d2992ea1f3e08e75bf4bef84c31
12. 0x7026808261896a203198354548e5e8cabce4a06e89d077c172084841b47ae119
13. 0x3199db04c2c73c3483386a86bf503eafde5af103465608156e2e5f42e72a6fbe
14. 0x6b927d53caa5125cdba9255612d524976c691f8672796c3f0885ba2c5b3af1ad
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae