Evidence row 125795

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.apidirect.io/v1/substack/category/feed"
    ]
  ],
  "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 Substack category's feed: the posts and notes Substack shows for the topic, top, newest or posts only.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "category": "technology"
            },
            "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": {
                    "category": {
                      "description": "Category ID or slug, e.g. 4 or technology. See Category IDs (https://apidirect.io/docs/substack-category-ids)",
                      "maxLength": 100,
                      "type": "string"
                    },
                    "pages": {
                      "default": 1,
                      "description": "Number of pages to fetch and merge into one response (1-250, billed per page returned). Each page returns about 11 items. Fetching stops early when there are no more results.",
                      "maximum": 250,
                      "minimum": 1,
                      "type": "integer"
                    },
                    "sort_by": {
                      "default": "top",
                      "description": "Sort order: top, most_recent or posts (posts only, no notes)",
                      "enum": [
                        "top",
                        "most_recent",
                        "posts"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "category"
                  ],
                  "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": "2026-10-25T12:22:46.969Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-25T12:22:46.841Z"
    },
    "resource": "https://x402.apidirect.io/v1/substack/category/feed",
    "serviceName": "API Direct",
    "tags": [
      "Substack"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Get a Substack category's feed: the posts and notes Substack shows for the topic, top, newest or posts only."
}

What the leaf hashes

{"body":"527148b3317719904f9b981ef7543c90cc8141741957a316cf3edeb562091d8d","id":125795,"kind":"listing","method":"baseline/1","observed_us":1793025626720671,"prev":null,"subject":"x402_bazaar:https://x402.apidirect.io/v1/substack/category/feed","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. 0xd7e36263b8e40f8a3650d677e3bfd853129fd832025fe3d6b8393e10a1c6f1a6
2. 0xc1c39503f5eb4afbaf792d8f6455b95b5f2899afbf4a177dde1f58eecfdc30f4
3. 0xfce854ac60388db461762008e21cb865d71a4a6954bbdaba69fca00831dfb818
4. 0x340394fd4aa93d98593554da00ea8335f59a13bbbb3fd560a2bb1ce4f42935f1
5. 0x94bf88fa1aa5a5a6704addb5dc68ff008fdd333f028bfc678f88b56a3f6af826
6. 0x6b15734c7305023f3f6060f2c0e87707e5a92d3056f5feccd5a2ac2282042597
7. 0x0d255e9932254046bb4776c7a54fa2a60ead47f32f668737f2477c25dc9cb7ec
8. 0x491ffb22b6faa4f27b3abcc2471784d7fa0064d960525b5463a4ef5fb68217a3
9. 0x421ef9a649a8881c0ca743e8fda5d3c2a2f63232806f1fbb0768307d8cca1f0b
10. 0x99d243e75489137f42f22b35cac536858bfa54cac8df9dedbb78852b9f686a91
11. 0x2671a86f48dece064e871ca46396549de6c07bd09915bed27b7ac95a735127fd
12. 0x07e91966e8a0c43a0725bd3d523259064a93333c2900e6171b69ffbfd9f423f1
13. 0xcd9e3af1fa905ec61b99ee9442716d7c7a439aecacd018ec229a24def1cabf6b
14. 0x6b927d53caa5125cdba9255612d524976c691f8672796c3f0885ba2c5b3af1ad
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae