Evidence row 125804

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.apidirect.io/v1/substack/publication/posts"
    ]
  ],
  "name": "API Direct",
  "owner_address": "0x5d07cc2a0fb4eb123a525ca0b51cf6fb485014fc",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 900,
        "network": "eip155:8453",
        "payTo": "0x5d07Cc2a0FB4Eb123A525CA0b51cf6fB485014fc",
        "scheme": "exact"
      },
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "permit2",
          "facilitatorAddress": "0x8CDA367232d78c067116e3260da881d2da8ffa39",
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 900,
        "network": "eip155:8453",
        "payTo": "0x5d07Cc2a0FB4Eb123A525CA0b51cf6fB485014fc",
        "scheme": "upto"
      }
    ],
    "description": "Get a publication's posts, newest first, top or most discussed, or search them by keyword.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "publication": "lenny",
              "sort_by": "most_recent"
            },
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "get_sentiment": {
                      "default": false,
                      "description": "Set to true to add AI emotion analysis (Plutchik's Wheel) to each result. Adds +$0.001 per request to the cost. Returns emotion scores, dominant emotion, intensity, and polarity.",
                      "type": "boolean"
                    },
                    "page": {
                      "default": 1,
                      "description": "Page number for pagination. Each page returns up to 20 posts.",
                      "minimum": 1,
                      "type": "integer"
                    },
                    "podcasts_only": {
                      "default": false,
                      "description": "Set to true to return only podcast episodes (most_recent archive only).",
                      "type": "boolean"
                    },
                    "publication": {
                      "description": "Publication subdomain (lenny), host (lenny.substack.com, www.lennysnewsletter.com) or any URL on it (max 500 characters)",
                      "maxLength": 500,
                      "type": "string"
                    },
                    "query": {
                      "description": "Keyword to search the publication's posts for (max 500 characters). Results are by relevance; sort_by is ignored.",
                      "maxLength": 500,
                      "type": "string"
                    },
                    "sort_by": {
                      "default": "most_recent",
                      "description": "Sort order for the archive",
                      "enum": [
                        "most_recent",
                        "top",
                        "discussions"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "publication"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "eip2612GasSponsoring": {
        "info": {
          "description": "The facilitator accepts EIP-2612 gasless Permit to Permit2 canonical contract.",
          "version": "1"
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "amount": {
              "description": "The amount to approve (uint256).",
              "pattern": "^[0-9]+$",
              "type": "string"
            },
            "asset": {
              "description": "The address of the ERC-20 token contract.",
              "pattern": "^0x[a-fA-F0-9]{40}$",
              "type": "string"
            },
            "deadline": {
              "description": "The timestamp at which the signature expires.",
              "pattern": "^[0-9]+$",
              "type": "string"
            },
            "from": {
              "description": "The address of the sender.",
              "pattern": "^0x[a-fA-F0-9]{40}$",
              "type": "string"
            },
            "nonce": {
              "description": "The current EIP-2612 nonce of the sender.",
              "pattern": "^[0-9]+$",
              "type": "string"
            },
            "signature": {
              "description": "The 65-byte concatenated signature (r, s, v) as a hex string.",
              "pattern": "^0x[a-fA-F0-9]+$",
              "type": "string"
            },
            "spender": {
              "description": "The address of the spender (Canonical Permit2).",
              "pattern": "^0x[a-fA-F0-9]{40}$",
              "type": "string"
            },
            "version": {
              "description": "Schema version identifier.",
              "pattern": "^[0-9]+(\\.[0-9]+)*$",
              "type": "string"
            }
          },
          "required": [
            "from",
            "asset",
            "spender",
            "amount",
            "nonce",
            "deadline",
            "signature",
            "version"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1792917947/bazaar-icons/9c187cd7bdaa9439.png",
    "lastUpdated": "2026-10-25T12:23:08.26Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-25T12:23:08.132Z"
    },
    "resource": "https://x402.apidirect.io/v1/substack/publication/posts",
    "serviceName": "API Direct",
    "tags": [
      "Substack"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Get a publication's posts, newest first, top or most discussed, or search them by keyword."
}

What the leaf hashes

{"body":"226678d6cc8ac80640efc5a4ab9c51722ce93141e388519e96d20defee50ddeb","id":125804,"kind":"listing","method":"baseline/1","observed_us":1793025626730226,"prev":null,"subject":"x402_bazaar:https://x402.apidirect.io/v1/substack/publication/posts","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. 0xc8ca1acdcaace7a8ab320c46ce230d92284133232a0b8169b09ab810ac0b3a26
2. 0xf695d5104d4e898d626feb2be124a2165d0aff70a479f571baac013d7e0371e5
3. 0x5cbbf1d47d61472b0aead8fdcc140338e40f5c957183a6ae73a1ff2d8f6d6eb6
4. 0x1db0859706f121ca69928a2791716c83470f05f245c89e30204f580e53d64ab5
5. 0x25cd8a74b9699dc78362e9c593640b3e3eae374fd2f6f8f594c1f869ffeba88c
6. 0x07e85ee07fad41357e1129fb3012f829d13299e5f668f0ded2e36859d24e9737
7. 0x517a78d56f820491f2eb44a2cc18cf41015561b777c35a4974a0ff29e0203baf
8. 0x9caba09d4aed54a54d920204d7a23badd508a0883017d723f58f0750820cb1f8
9. 0x1148a3536fbc4c6e4bca38b54eb0f7b8853df52207579c13e0b6efa25a2fe4cf
10. 0x99b83a0d8096cc6e79ca10fec0381f61738bb5a26cb8d4668d93598ea82a302a
11. 0xde080106ffe5b9071b2505ae31b17f7da4d3a9c7f4f4d9819f700d720702beeb
12. 0xde09984239f27618a13932caf48f5d39831fc5021500b0581dce0dabd570bd6e
13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae