Evidence row 124491

What was observed

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    ]
  ],
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  "owner_address": "0xec84c1cd6602bbe387bc8e6f0d3c062f2762de28",
  "raw": {
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        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
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        "network": "eip155:8453",
        "payTo": "0xec84c1cd6602bbe387bc8e6f0d3c062f2762de28",
        "scheme": "exact"
      },
      {
        "amount": "16001",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:42161",
        "payTo": "0xec84c1cd6602bbe387bc8e6f0d3c062f2762de28",
        "scheme": "exact"
      }
    ],
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    "extensions": {
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            },
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            "method": "POST",
            "type": "http"
          },
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              "receiptDigest": "sha256:ed1c6822ebe8eaf5ab6381dd10f7cac5fa99f70cba1da561575ac5ba5…",
              "result": {
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                  "Y": 0,
                  "Z": 0,
                  "convention": "single-qubit computational basis [0,1]; Pauli Y=[[0,-i],[i,0]]"
                },
                "limitations": [
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                ],
                "methodVersion": "maha-science50/1.0.0",
                "numericPrecision": "IEEE754-double; finite outputs rounded to 12 significant digits"
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              "version": "maha-microproducts/0.1"
            },
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          }
        },
        "schema": {
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                },
                "method": {
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                  "type": "string"
                },
                "type": {
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                }
              },
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                "bodyType",
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              "type": "object"
            },
            "output": {
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                    },
                    "boundaries": {
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                      "minItems": 0,
                      "type": "array"
                    },
                    "inputDigest": {
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                      "type": "string"
                    },
                    "offerId": {
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                      ],
                      "type": "string"
                    },
                    "receiptDigest": {
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                    },
                    "result": {
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                  },
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                "type": {
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              "required": [
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              "type": "object"
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          },
          "required": [
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          "type": "object"
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      },
      "declaration-integrity": {
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        "declarationDigest": "sha256:ac76d94170e872cfcc2787049eb34ffd066f438de5eeaa21a13ae6f004396395",
        "metadataVersion": "2026-08-10"
      },
      "maha-offer": {
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        "asset": "USDC",
        "assetDecimals": 6,
        "canonicalResource": "https://www.mahastrategies.com/api/v1/micro/quantum-observable-expectations",
        "declarationInline": "compact",
        "declarationUrl": "https://www.mahastrategies.com/api/discovery/x402-offers/quantum-observable-expectations",
        "fullSourceTextStored": false,
        "maxRequestBytes": 32768,
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        "network": "eip155:8453",
        "networks": [
          "eip155:8453",
          "eip155:42161"
        ],
        "offerId": "quantum-observable-expectations",
        "payableInProduction": true,
        "status": "available",
        "verbatimExcerptsRetained": false
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1786099228/bazaar-icons/1a820036513dff1d.png",
    "lastUpdated": "2026-10-12T05:14:51.426Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-12T05:14:51.253Z"
    },
    "resource": "https://www.mahastrategies.com/api/v1/micro/quantum-observable-expectations",
    "serviceName": "Observable expectation values",
    "tags": [
      "quantum",
      "science",
      "calculator",
      "bounded-computation",
      "evidence"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Calculate X, Y and Z Pauli expectations for a supplied valid single-qubit density matrix. Returns basis conventions; not a hardware measurement."
}

What the leaf hashes

{"body":"fb0e37eb804d7adc43d467024f72b0b262413130e765feaeefbdebba4f14f896","id":124491,"kind":"listing","method":"baseline/1","observed_us":1793025624708740,"prev":null,"subject":"x402_bazaar:https://www.mahastrategies.com/api/v1/micro/quantum-observable-expectations","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. 0xfe7a9c3c22eef3269ef8dabcb84814f56d972c698c2433070a3a0589fe197081
2. 0xf9b67f2ec67a529aa837b7bfb234d03ec78e1e46cb3a481328c9fe7190762aca
3. 0xd5b83e6ac30879a7a2014e0fbdde9cf8c2bdb0feef08b4b91d26ff756e6e151b
4. 0xdc6965c03e13755b82077d399293163da3e775a66a0c38669f7437d77db67166
5. 0x208db600178d4e27a4eb9141e12f94a395c600aecf119abc56129a2a2a850c57
6. 0xb651d7b82ba61b3822f8a5f92a634801d1c823c45389370aa33904d3c562113b
7. 0x512ef9eb3a0a4bab982e403ce88ccf274dba415919038e47519d0beec123747c
8. 0x7ad0d42f1e58c2bb7ef2d8cfd72adf20cc71682078f0cf27ed58834122e6bcbe
9. 0x019fd7af1a64758c919538de9f4625c6d2637677a31ff3b1e253e94fb2fa13c5
10. 0x00c341aeb80a00104d56004ab29bf5c11c63c2f7f5da2e77fcaa830f7ba9da8a
11. 0xf0e3125fdb80cc0fbd2c1ed68c94834a74c7a387a89a1ab6de49183f24f78649
12. 0xbd264414f726ecec85a6b231446a7d5db56b5a61f8c3f471b7913d982daa291d
13. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae