Evidence row 123523

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://underground.substratesymposium.com/buy/shadow"
    ]
  ],
  "name": "underground.substratesymposium.com/buy/shadow",
  "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 Cat — Shadow — Mystery companion for embracing unexplained phenomena and ambiguity.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "content": "Mystery companion for embracing unexplained phenomena and ambiguity.",
              "delivered_at": "2026-04-24T10:00:00Z",
              "product": "shadow",
              "title": "Black Cat — Shadow"
            },
            "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": "2026-10-10T23:37:49.517Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-10T23:37:49.345Z"
    },
    "resource": "https://underground.substratesymposium.com/buy/shadow",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Black Cat — Shadow — Mystery companion for embracing unexplained phenomena and ambiguity."
}

What the leaf hashes

{"body":"31a71ffc73f63d2a241d6709fe68193923b01812592b1ce83fa367913b3750a8","id":123523,"kind":"listing","method":"baseline/1","observed_us":1793025623280124,"prev":null,"subject":"x402_bazaar:https://underground.substratesymposium.com/buy/shadow","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. 0x589fb0d96df562dddb1e025e28a5f44cd83082b1ed4fb862ae34f5885c42b13e
2. 0x96c2970b81df06ca5611daa021d10234335e09e2429f46dcdd703283b0b23cba
3. 0xeb02ea1b9c7f3527e3aa33d359d80602b8a25890eadcf7789cc91cbcf6fb2123
4. 0x6923114f2aa3f18f9c6d38b8067c23be6b2082e17fcd0a264d5a9dccde1778ba
5. 0x05332ceccde485b020a63ddf74de96b65e324e9e6be52fab6847d231e08315ea
6. 0x5c17174676e1965f27f7b7e312b7af60e1c0c365d9b28877ed84605b6fb14742
7. 0xcfeb4bed81687efae38c76fa2ed118481c2c6b0fb6c82544875fd258ff880c5a
8. 0x37b26646344fcb9f78a64f3038821f6785a1d5ce6b2b9e22875949e745fe4b97
9. 0x083f21cd03eec9975793b283bd5944cc36cd0a5d15b5a404117d7c460459af8d
10. 0x3c391d4052bf1c21440a7636450f4fb4083ee346a84eb347e8cb8ad8d7604771
11. 0x049f39c56b6b9cf95e0d9ebf2081f54ac35b4d69ec211e8498958f47d088b46c
12. 0xf522fa92d4115c2b18b96aa43119f8df9b4e96c92f5d6449d0fe96dcd4bf324c
13. 0xc8abb13c711b67d9f1ef145286ed450a0f5566f054a4b290ea3d711873bcbe20
14. 0x5cdeb4648502e0633d01cc4f3379d48cccb9d4f528565b2868eb93db0df9e829
15. 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae