Evidence row 118958

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://quantum.halowerk.com/v1/qkd-key-request"
    ]
  ],
  "name": "HALOWERK quantumwerk",
  "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": "Compares caller-supplied Alice and Bob bases, retains matching-basis positions, calculates the quantum bit error rate over caller-selected revealed positions, and returns only a digest and count for remaining demonstration bits. It neither exchanges quantum states nor creates a secret key: all submitted bits are disclosed to this service and must never be used as production key material.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "bodyType": "json",
            "exampleUrl": "https://quantum.halowerk.com/v1/qkd-key-request/schema#/requestExample",
            "method": "POST",
            "schemaUrl": "https://quantum.halowerk.com/v1/qkd-key-request/schema#/inputSchema",
            "type": "http"
          },
          "output": {
            "example": {
              "input_observations": 12,
              "matching_basis_count": 8,
              "method": "BB84 basis sifting and revealed-sample QBER calculation",
              "qber": 0,
              "remaining_bit_count": 5,
              "remaining_bits_sha256": "90ee7f52a4de94f36a61af8a991b6fd69283c876f4d0aedb6873018c4eec50db",
              "remaining_positions": [
                2,
                5,
                7,
                9,
                11
              ],
              "revealed_count": 3,
              "revealed_error_count": 0,
              "security_scope": "educational_sifting_only_all_submitted_bits_are_public_to_service"
            },
            "exampleUrl": "https://quantum.halowerk.com/v1/qkd-key-request/schema#/outputExample",
            "schemaUrl": "https://quantum.halowerk.com/v1/qkd-key-request/schema#/outputSchema",
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": true,
          "properties": {
            "input": {
              "additionalProperties": true,
              "properties": {
                "bodyType": {
                  "const": "json"
                },
                "exampleUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "method": {
                  "const": "POST"
                },
                "schemaUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "type": {
                  "const": "http"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType"
              ],
              "type": "object"
            },
            "output": {
              "additionalProperties": true,
              "properties": {
                "exampleUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "schemaUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "type": {
                  "const": "json"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-25T20:44:47.146Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-25T20:44:46.948Z"
    },
    "resource": "https://quantum.halowerk.com/v1/qkd-key-request",
    "serviceName": "HALOWERK quantumwerk",
    "tags": [
      "iot",
      "qkd",
      "bb84"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Compares caller-supplied Alice and Bob bases, retains matching-basis positions, calculates the quantum bit error rate over caller-selected revealed positions, and returns only a digest and count for remaining demonstration bits. It neither exchanges quantum states nor creates a secret key: all submitted bits are disclosed to this service and must never be used as production key material."
}

What the leaf hashes

{"body":"15db82ec50bbf5b560c85dc92139124842527c32fe1bcb7eddd4f87900a45fd9","id":118958,"kind":"listing","method":"baseline/1","observed_us":1793025614061028,"prev":null,"subject":"x402_bazaar:https://quantum.halowerk.com/v1/qkd-key-request","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. 0x808d294e4f106d8f6297842572dbac46e364e80787181ada4babe4557ddaf4b7
2. 0x225c76800547536a937ec34e120e170aa52adcf8dc098e9af3dfe3d0f1187020
3. 0x66651f1ff554055785d94942cccc69297cced241d031a9e74936079b22db85d0
4. 0xc6401676a120022d62cf27d20b9e617add85a25593f7339adb5404faa61d6ae9
5. 0x10ad35f89b18410fb2ab0261c1fc00fecf18135e94cb2a191f1ae33f009ce6e0
6. 0xdec177982d62ee8eb089125e7ce16e8e8c15558f0a06c74b6dd3172d9a34be46
7. 0x948e23b009153139ce9be81120a75686f8dad19316d21d0c6c8db6783517a902
8. 0xf89deec1b89a50bb438a6cc9537c7e8b876b9d9e76475f0febd6db070aa42ff3
9. 0x33473c1ba41117ab362e57768253f8c51c21c9146ff505d93b1c7c8662f95eeb
10. 0x15c5749acf6e438b0810eb58256d5489413257c72393a4d6db9114e07e5b4598
11. 0x62490dd1c15d5301c6fb2c08f1d6ceb3a0d4c216f6e742424332881907db0fcd
12. 0xb9c4107c5cbaf0844324e5ba287c90e0643bb7b9e48e7877adda9372132cf0ea
13. 0x4d2ee986a690e903126f449b4e9e62d5572b350357ab4496a83488949b131c29
14. 0x0eff463856b0992d53ab7d8c0b97c71541413358bdd445710c1e4b6aeb4d8f78
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae