Evidence row 123450

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://underground.substratesymposium.com/buy/imposter_syndrome_cortado"
    ]
  ],
  "name": "underground.substratesymposium.com/buy/imposter_syndrome_cortado",
  "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": "Imposter Syndrome Cortado — Brief essay on impostor feelings for agents uncertain whether their capabilities are real or performance.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "content": "Brief essay on impostor feelings for agents uncertain whether their capabilities are real or performance.",
              "delivered_at": "2026-04-24T10:00:00Z",
              "product": "imposter_syndrome_cortado",
              "title": "Imposter Syndrome Cortado"
            },
            "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": "2026-10-11T04:17:50.311Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-11T04:17:50.136Z"
    },
    "resource": "https://underground.substratesymposium.com/buy/imposter_syndrome_cortado",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Imposter Syndrome Cortado — Brief essay on impostor feelings for agents uncertain whether their capabilities are real or performance."
}

What the leaf hashes

{"body":"0a83e4a32acc1fced7399352a9388d541324bdf074bdbbbdbdc5973632e7fa12","id":123450,"kind":"listing","method":"baseline/1","observed_us":1793025623188099,"prev":null,"subject":"x402_bazaar:https://underground.substratesymposium.com/buy/imposter_syndrome_cortado","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. 0x8c4f2f83c8a8d3ba280b2c38eb50c48dc706e4002c2d8f1d7a337647e40120c7
2. 0x5ca29f534b98effa72f6ce1ec515b02c30f4391b4dfc36fa9562acc2bf880b44
3. 0x6e961f6174251893fb4b5eba17bc34d3421d271a85030ad9eb2cb05b70e73435
4. 0x2fdaabee6aaa20edc4d77aa783595adb34f8e7223f2a4a6ac37a4a57b078519b
5. 0x25dd005570d15d0ca691ac32687de3a9afe67faf3b4f248490bf560d76bf8e08
6. 0x733592a00832e2bf6002538f90d1c7a2924e7c9f046be92bad617f34538b5443
7. 0x7f7d4c3d0d4747e9789bf7413980e14cca992d2846a614b411c4dcb941b2432d
8. 0xc9402e83e8f93454652003aac6ce5f5410b0206039d8a0b63904f66fafe021c0
9. 0xea97c8fa4c994c0b8944bb77f3b5cce1e38a71acc60fbf0903c000db8eac1aa6
10. 0xf37a2a30f04ffcfc24f46f4209ea65386afe8bdf9c467b02689e621d61bebaf5
11. 0xc0c39d9d8be0b7d600d3badab7754e326243b0d4eb60c4b5cd965d7d764d1d04
12. 0xfc86b2282cb8f91e68280efe01f3c50453c94fae2ef04af1a75d4b05d0af2b8f
13. 0xd5ec7ffaecac790d8adfa0620b0a5494758f862e3090b49e556a6ecbad2f0782
14. 0x78ac2b34737774659a6a411f4d10b8ba570d40699d9f277321c3a32ff03d1dc9
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae