Evidence row 125809

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.apidirect.io/v1/substack/user/activity"
    ]
  ],
  "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": "0x93F6601151cCB08F333AB4B1CCcfb1e188c0bE44",
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 900,
        "network": "eip155:8453",
        "payTo": "0x5d07Cc2a0FB4Eb123A525CA0b51cf6fB485014fc",
        "scheme": "upto"
      }
    ],
    "description": "Get an author's public activity feed: their Notes and the posts they publish or restack, newest first, or only their notes, posts, replies, restacks or likes.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "username": "hamish"
            },
            "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": {
                    "pages": {
                      "default": 1,
                      "description": "Number of pages to fetch and merge into one response (1-250, billed per page returned). Each page returns 12 items. Fetching stops early when there are no more results.",
                      "maximum": 250,
                      "minimum": 1,
                      "type": "integer"
                    },
                    "type": {
                      "description": "Only one kind of activity: note, post, reply, restack or like. Omit for notes, posts and restacks.",
                      "enum": [
                        "note",
                        "post",
                        "reply",
                        "restack",
                        "like"
                      ],
                      "type": "string"
                    },
                    "url": {
                      "description": "Profile URL, e.g. https://substack.com/@lenny (max 500 characters). Provide one of username, user_id or url.",
                      "maxLength": 500,
                      "type": "string"
                    },
                    "user_id": {
                      "description": "Numeric Substack user ID, as returned in user_id. Provide one of username, user_id or url.",
                      "type": "string"
                    },
                    "username": {
                      "description": "Substack handle, e.g. lenny, with or without a leading @ (max 100 characters). Provide one of username, user_id or url.",
                      "maxLength": 100,
                      "type": "string"
                    }
                  },
                  "required": [],
                  "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": "2026-10-25T12:23:19.758Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-25T12:23:19.651Z"
    },
    "resource": "https://x402.apidirect.io/v1/substack/user/activity",
    "serviceName": "API Direct",
    "tags": [
      "Substack"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Get an author's public activity feed: their Notes and the posts they publish or restack, newest first, or only their notes, posts, replies, restacks or likes."
}

What the leaf hashes

{"body":"7cadeb21bc17822b9f8e9c7441d0e39989a267a573d08dcb320b10cbf87195a0","id":125809,"kind":"listing","method":"baseline/1","observed_us":1793025626734808,"prev":null,"subject":"x402_bazaar:https://x402.apidirect.io/v1/substack/user/activity","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. 0xe94a96de8095613b2eed65289f96192b235880ffc494c2c27d5d75f134fdc0db
2. 0xb87123fda06e4bc9aabba6e12a9c6e8e2339fe4a28e8d80de9a5873b9f091745
3. 0x80d95737c38ea607080cd27bb2391fc807d4d9e8eeb161008716a06fda7818a8
4. 0x47112a9ed75b82db2397e413a59774b671a87f3cb75e2ffe10805021fe9ca3ec
5. 0x05d8925343928cb064ac888dc9253752757b8943d7133833a6aeda33a4b7c8ba
6. 0x47111ca7e9c64382714c85cccca15fc647bd87f597b3f6721f3d6f7057c218d7
7. 0x138c9032020cb979ebc18eff2c71533150e5de574e362556c5d1092b256091ab
8. 0x73b6351b948a17e4c2d6f5a324ab50582507169879b1c14d0ac2c7a39e5ebaf4
9. 0xe124d404c03042e75e9255498562a108d22f22cc4da79f88b159aebe7fc1f496
10. 0x35130b879dd64c383ed4810a48a0a89a89658ed812c5177a30ce52551f474534
11. 0x11f999a56e0d8cc7daa64e4903eb41d6078ed2b930cfcc1858070d91536f22ed
12. 0x3d0b5282d5282c30fc9f86662367cab01d0dba65f13d2968391a7d087b79dfb3
13. 0xafcc1fe54cfe00a3a1de33df127340075f22433bb89848bbc81499cd7aca5b2b
14. 0x9bc5fc98278b9f6dc18c66c6e162aefd5244be03170d41bc5161f58ad11beed7
15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae