Evidence row 118954

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://quantum.halowerk.com/v1/error-correction"
    ]
  ],
  "name": "HALOWERK quantumwerk",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "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": "Treats a caller-supplied odd-length bit word as a classical repetition code, majority-decodes one logical bit, and reports the corrected word and adjacent XOR syndrome. This narrow demonstration is not a surface-code simulation and does not model coherent quantum errors, measurements or fault-tolerant thresholds.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "bodyType": "json",
            "exampleUrl": "https://quantum.halowerk.com/v1/error-correction/schema#/requestExample",
            "method": "POST",
            "schemaUrl": "https://quantum.halowerk.com/v1/error-correction/schema#/inputSchema",
            "type": "http"
          },
          "output": {
            "example": {
              "correctable_under_model": true,
              "corrected_codeword": "1111111",
              "corrected_positions": [
                3
              ],
              "logical_bit": "1",
              "method": "odd-length classical repetition-code majority decode and syndrome",
              "model_scope": "classical_bit_flip_repetition_code",
              "observed_error_count": 1,
              "syndrome": [
                0,
                0,
                1,
                1,
                0,
                0
              ]
            },
            "exampleUrl": "https://quantum.halowerk.com/v1/error-correction/schema#/outputExample",
            "schemaUrl": "https://quantum.halowerk.com/v1/error-correction/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": "2026-10-26T00:14:50.293Z",
    "quality": {
      "l30DaysTotalCalls": 8,
      "l30DaysUniquePayers": 6,
      "lastCalledAt": "2026-10-26T00:14:50.1Z"
    },
    "resource": "https://quantum.halowerk.com/v1/error-correction",
    "serviceName": "HALOWERK quantumwerk",
    "tags": [
      "iot",
      "error-correction",
      "repetition-code"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Treats a caller-supplied odd-length bit word as a classical repetition code, majority-decodes one logical bit, and reports the corrected word and adjacent XOR syndrome. This narrow demonstration is not a surface-code simulation and does not model coherent quantum errors, measurements or fault-tolerant thresholds."
}

What the leaf hashes

{"body":"8b1676b7727d804ba725c8ccdba40012dfd79ac648289f4b40191ca9e71a802a","id":118954,"kind":"listing","method":"baseline/1","observed_us":1793025614057064,"prev":null,"subject":"x402_bazaar:https://quantum.halowerk.com/v1/error-correction","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. 0x673ae8cba739ba6fd69359ecaf8c283681b62bf3a292d3866be6bda86d20f40c
2. 0xf5c2b79886443e571d6186bc6ede10866ba2f1c5e13fd8d68714f0d139ea8484
3. 0x5cfd8b2c8fc5146089674d74cb3a06b5b378832a8fbfef019723188b832cb7e6
4. 0x58b5438505c50f4a15db7855b0b5332961eda88543211a9a372a21db299ce7a4
5. 0x67bc0ce91381e3ae11187ebbe1e71b19043b779efc8ce72b46ab941ecb52da47
6. 0xb7062c91d8215d57548fd4a9950c838a90fd70803b04cb192dc961a785f4de4a
7. 0xe7301b62f4964bb8b12a0a8bb1b2a201d16f43a085323143b335c3f70848e332
8. 0x0926c1ff12235f1827616d4ba3d12b023352ab652dd1738b21be2991ad03d54c
9. 0xe49cd474b6e588aa72674a2bd7fec0e694068e34c3a0dac8b4f6322f24150951
10. 0x8abff743dd157f0225d59527cbd5a558fe9044a13b8251e90cdf945d405603a0
11. 0x13951c97c827e2025801573dada28cfb5f8038c9b4de741f9d526cb67b3fe605
12. 0x260682fd6ecd274e73505c5e0bd798abdd0e702afca4f8eebd4331b607a6b175
13. 0x5f350d70c252ff1169c0210fd45fce1b0ab8d7316f048741a9e90a6c8cb65dcf
14. 0x9a79c65e077cd9da9d436b3ade6f5ddc0d244510c4d5903ef2f02d81205f7666
15. 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae