Evidence row 562080

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://grundpreis.halowerk.com/v1/category-unit-prices"
    ],
    [
      "x402",
      "https://grundpreis.halowerk.com/v1/pack-compare"
    ],
    [
      "x402",
      "https://grundpreis.halowerk.com/v1/pack-size"
    ],
    [
      "x402",
      "https://grundpreis.halowerk.com/v1/unit-price"
    ],
    [
      "x402",
      "https://grundpreis.halowerk.com/v1/unit-price/batch"
    ]
  ],
  "name": "grundpreis.halowerk.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "grundpreis.halowerk.com",
    "endpoints": [
      {
        "description": "Distribution of latest included product/store observations, with regular and promotional prices separate. Example: category en:pastas, country DE. Cheapest means cheapest included observations, not the whole market.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "en:butters",
            "group": "body",
            "name": "category",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "DE",
            "group": "body",
            "name": "country",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://grundpreis.halowerk.com/v1/category-unit-prices"
      },
      {
        "description": "Compare supplied packs within the same mass or volume basis. Example: 500 g at EUR 1.49 versus 1 kg at EUR 2.69. Unknown quantities and incompatible units are marked rather than silently compared.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": [],
            "group": "body",
            "name": "packs",
            "required": false,
            "type": "array"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://grundpreis.halowerk.com/v1/pack-compare"
      },
      {
        "description": "Current documented pack quantity for an EAN string from Open Food Facts. Example: ean 4008400401621. Snapshot and data gaps are explicit. This is neither a historical shrinkflation measure nor a retail price.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "4000417025005",
            "group": "body",
            "name": "ean",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://grundpreis.halowerk.com/v1/pack-size"
      },
      {
        "description": "Calculate price per kg or litre from your price and quantity or an available EAN pack size. Example: price_eur 1.29, quantity 4x125g. This is a calculation, not an observed store quote.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 2.49,
            "group": "body",
            "name": "price_eur",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "6 x 0,33 l",
            "group": "body",
            "name": "quantity",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://grundpreis.halowerk.com/v1/unit-price"
      },
      {
        "description": "Calculate kg/l unit prices for up to 50 rows of price_eur plus quantity text or EAN. Example: items [{price_eur:1.29,quantity:\"500 g\"}]. Errors are reported per row; kg and litre groups are not comparable. Empty batches with no usable line are not charged. No observed store offer.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": [],
            "group": "body",
            "name": "items",
            "required": false,
            "type": "array"
          }
        ],
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://grundpreis.halowerk.com/v1/unit-price/batch"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "grundpreis-halowerk-com",
    "integrationType": "",
    "isNew": false,
    "name": "grundpreis.halowerk.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.0026",
      "currency": "USDC",
      "maxAmount": "0.005",
      "minAmount": "0.002"
    },
    "provider": "grundpreis.halowerk.com",
    "providerUrl": "",
    "serviceName": "",
    "tags": []
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"91592faf57c1a5d0e7903f6c79e962be1ca38b121b5b9e3ecebdf4cdd58794cf","id":562080,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793137313277454,"prev":558497,"subject":"agentic_market:grundpreis-halowerk-com","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x59b4e339d5bfef6c447abe98478ba16e587bcbc27a19dd5af8973b311212babf
2. 0x5309364e486816db9db51933fc363d8e21b9b76e27fc78bfcfbd53aa8d51d159
3. 0x84f7ba6b1de6493796f8e68273b1c996bff902cb12fcbbb677a822346ff26974
4. 0xaae2bb067549bdb5a74ddb527f4b03203145bd2c9da0e310073347d98b5793ae
5. 0x79da3c58f8de4c94a913359178ab0c8827a785a3caf310e73a65f86acef68116
6. 0x1b71811cca32995bec537a27fedc4e1ac8c98ce9b6fba5c7b6fe8dae2bf2981c
7. 0xd2904d393e7538b3dbd6ce2413fd4224ffd42a3b7807952d0d3edb6eae781fea
8. 0x17bd292da85cbf7b36d92867e8cd0d222313370a3d96ef5d66f5c30a1026c984
9. 0x80a06eb3b13c52be86f98af737118f424331fc9eef6218c298c6d61fbed1d778
10. 0xcd8fc222358beab19aa2727c9bdbde68de6a3a2cc6fd1b297011037afcd0f0f4
11. 0x5a36e7e6d5cf42671ca353a841c8b4f2fd6b364ce4d06ca7fb1164d94f39f815
12. 0x6f9c2e17fd073d07da42da76c8ca2f200b30027f0378b0d9628f8fac6f48cd16
13. 0x5b3213451efe1e2950dd287afaede00cc8a45dfd9721ef9b3d698bde1eeb9909
14. 0x674bc1173d39130be4d15bbfc7327f8a8af87eb251e54c8d4409c7e840b9e538
15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4