Evidence row 71315

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://audio.halowerk.com/ad-slot-auction"
    ]
  ],
  "name": "audio.halowerk.com/ad-slot-auction",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "asset": "USDC",
          "assetTransferMethod": "eip3009",
          "eip712Domain": {
            "chainId": 8453,
            "name": "USD Coin",
            "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "version": "2"
          },
          "name": "USD Coin",
          "network_name": "Base Mainnet",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "scheme": "exact"
      }
    ],
    "description": "Four actions on one endpoint. create opens a slot with its position, length, reserve price and closing time, and returns an admin token that only the opener holds. bid places a sealed bid, checked against the reserve, the slot length and the publisher's excluded categories before it is accepted — a rejected bid is recorded with its reason rather than silently dropped, so a bidder can see why it never competed.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "action": "create",
              "closes_at_unix": 1793735685,
              "position": "mid_roll",
              "publisher": "HALOWERK example publisher",
              "reserve_usdc": 5,
              "slot_label": "episode 1, mid-roll 1",
              "slot_seconds": 30
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "action": {
                      "description": "create opens a slot, bid places a sealed bid, close settles it, status reads it.",
                      "enum": [
                        "create",
                        "bid",
                        "close",
                        "status"
                      ],
                      "type": "string"
                    },
                    "admin_token": {
                      "description": "Required for close. Returned once by create.",
                      "maxLength": 128,
                      "type": "string"
                    },
                    "amount_usdc": {
                      "description": "Sealed bid amount. bid only.",
                      "maximum": 100000,
                      "minimum": 0,
                      "type": "number"
                    },
                    "auction_id": {
                      "description": "Required for bid, close and status.",
                      "maxLength": 64,
                      "type": "string"
                    },
                    "bidder": {
                      "description": "Who is bidding. bid only.",
                      "maxLength": 120,
                      "type": "string"
                    },
                    "category": {
                      "description": "Advertiser category, checked against the exclusions. bid only.",
                      "maxLength": 40,
                      "type": "string"
                    },
                    "closes_at_unix": {
                      "description": "Closing time in Unix seconds. create only. At most 30 days out.",
                      "minimum": 0,
                      "type": "integer"
                    },
                    "creative_seconds": {
                      "description": "Length of the advertisement, checked against the slot. bid only.",
                      "maximum": 180,
                      "minimum": 1,
                      "type": "integer"
                    },
                    "excluded_categories": {
                      "description": "Advertiser categories the publisher refuses. create only.",
                      "items": {
                        "maxLength": 40,
                        "type": "string"
                      },
                      "maxItems": 20,
                      "type": "array"
                    },
                    "expected_listeners": {
                      "description": "Reach the publisher claims. Recorded as a claim, not verified. create only.",
                      "maximum": 100000000,
                      "minimum": 0,
                      "type": "integer"
                    },
                    "position": {
                      "description": "Where the slot sits in the content. create only.",
                      "enum": [
                        "pre_roll",
                        "mid_roll",
                        "post_roll"
                      ],
                      "type": "string"
                    },
                    "publisher": {
                      "description": "Name of the publisher offering the slot. create only.",
                      "maxLength": 120,
                      "type": "string"
                    },
                    "reserve_usdc": {
                      "description": "Price below which the slot is not sold. create only.",
                      "maximum": 100000,
                      "minimum": 0,
                      "type": "number"
                    },
                    "slot_label": {
                      "description": "What is being sold, for example \"episode 41, mid-roll 2\". create only.",
                      "maxLength": 200,
                      "type": "string"
                    },
                    "slot_seconds": {
                      "description": "Length of the slot. create only.",
                      "maximum": 180,
                      "minimum": 5,
                      "type": "integer"
                    }
                  },
                  "required": [
                    "action"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-15T00:55:05.527Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-15T00:55:04.936Z"
    },
    "resource": "https://audio.halowerk.com/ad-slot-auction",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Four actions on one endpoint. create opens a slot with its position, length, reserve price and closing time, and returns an admin token that only the opener holds. bid places a sealed bid, checked against the reserve, the slot length and the publisher's excluded categories before it is accepted — a rejected bid is recorded with its reason rather than silently dropped, so a bidder can see why it never competed."
}

What the leaf hashes

{"body":"cd1146d042ffdfd15c30544fc38ab02db10abc94a2e5fe7918ff6b2f358f1139","id":71315,"kind":"listing","method":"baseline/1","observed_us":1793025481946172,"prev":null,"subject":"x402_bazaar:https://audio.halowerk.com/ad-slot-auction","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. 0x42ae3ab5f22490f46065bbf63690d22d3d902b5d9756760fe59d0ac5f3a82bb4
2. 0xdc9e306be9da064efc4743d9edf10d0a49f1c70a1ac2b5e83d000566e5b474b7
3. 0xf8c72e1d8ed25c848faf7866fb4885610e43580f9fe180162bd4bffbe02b529a
4. 0x15c4c297ba2b7cfde41de418c5813efd9d1f7fd5ca39a2283d2e22d11680fa25
5. 0x291883d036fc2ac12f16699b0b68387c76f9ffbb98106bb19ad25ad97bcd97a0
6. 0xa5c0adfc19396511ba51f9ce15a5cd029105aabec42d2d969a7a2cd19ea09f35
7. 0x27685aec6bfd2ba56c3b8a1cf06c30a2f5a5d49f43658d72870eb0ac01e2bd9d
8. 0x9703b8c12c4bab59edbddf2afc18c17914158e21c1647999d2ae8c5289f6749e
9. 0x75cc7f5a9e041e691a712d48afcdb3411bc10d2105c8f6d3612b5f722af18590
10. 0xc268ff3f1dd69d7c668cdb05ded405db6f682a95f21c57e98e683c14e6e2ff89
11. 0x5209b44231d259fd8508722a1ae64f1b73c7b7f19b456b1ecd950d5b281c35b6
12. 0x58f4330f9ac32da273a2a76d85bc0768d037638cddbd3d1f09d9b64094bfd942
13. 0xd406739acce2ba016f8d49081b15f266a4ea4a0b0fc5ef171c89c8fd2dda4d80
14. 0x8b27a4c21bf4ba962fd008c8f4300bc6953764a5032b9ab0cfe696b318c45326
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae