Evidence row 231221

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.isitdownapi.com/v1/incidents"
    ],
    [
      "x402",
      "https://api.isitdownapi.com/v1/status"
    ],
    [
      "x402",
      "https://api.isitdownapi.com/v1/status/batch"
    ]
  ],
  "name": "api.isitdownapi.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "api.isitdownapi.com",
    "endpoints": [
      {
        "description": "List recent outages and incidents for one SaaS vendor. $0.01 USDC on Base per call. Returns up to 10 most recent incidents (title, status, severity, start and resolve times) from 60SecMonitor. Unknown vendors return 404, not charged. Don't use this for live up/down status; use /v1/status.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "stripe",
            "group": "query",
            "name": "vendor",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": null,
        "serviceName": "60SecMonitor Status API",
        "tags": [
          "incident-history",
          "outage",
          "vendor-incidents",
          "saas-status"
        ],
        "url": "https://api.isitdownapi.com/v1/incidents"
      },
      {
        "description": "Is a vendor down right now? Current outage status for one SaaS vendor. $0.01 USDC on Base per call. Returns status, active-incident summary, last-checked time, source URL and freshness fields, read live from 60SecMonitor. Unknown vendors return 404, not charged. Don't use this for past incidents; use /v1/incidents.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "stripe.com",
            "group": "query",
            "name": "vendor",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "8",
          "l30DaysUniquePayers": "4"
        },
        "serviceName": "60SecMonitor Status API",
        "tags": [
          "is-it-down",
          "outage",
          "status-page",
          "saas-status",
          "vendor-monitoring"
        ],
        "url": "https://api.isitdownapi.com/v1/status"
      },
      {
        "description": "Check whether up to 25 SaaS vendors are down in one call. $0.05 USDC on Base per call. Returns current status per vendor (comma-separated input) at one flat price, plus a list of vendors that are not operational. Not charged if no vendor is tracked or every lookup fails. Don't use this for a single vendor; /v1/status costs less.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "stripe.com,github,slack",
            "group": "query",
            "name": "vendors",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.05",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "60SecMonitor Status API",
        "tags": [
          "is-it-down",
          "batch",
          "outage",
          "vendor-status",
          "saas-status"
        ],
        "url": "https://api.isitdownapi.com/v1/status/batch"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "api-isitdownapi-com",
    "integrationType": "",
    "isNew": false,
    "name": "api.isitdownapi.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.023333",
      "currency": "USDC",
      "maxAmount": "0.05",
      "minAmount": "0.01"
    },
    "provider": "api.isitdownapi.com",
    "providerUrl": "",
    "serviceName": "60SecMonitor Status API",
    "tags": [
      "incident-history",
      "outage",
      "vendor-incidents",
      "saas-status",
      "is-it-down",
      "status-page",
      "vendor-monitoring",
      "batch",
      "vendor-status"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"a13d2d6b8e3ae34a886380243409032f3d99cf68ead9eb41bc53cceecbd72cc7","id":231221,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793028667898246,"prev":994,"subject":"agentic_market:api-isitdownapi-com","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x2137d6ab9ce2c203d865d88c2c1fea52b7f476155bdd876121c3ce2842f11915
2. 0x6bbb6d7794e70999203c571e0a3dd35f5475a3a7eb0d2346c7cbbc56dc1ed6d8
3. 0xfd474dc7cb8e2bfab58ebb7f35bab52a2c42d089cf4c4247e1b3d9a0c5ea3d1f
4. 0xdfb3ace236442de9b8d497255d7d66ca4278456dd839b0b49bb9bbd23367a047
5. 0x309cb3d8a81b41cc0132116b006c392e7404d76595eed787674ff932bbb9d56e
6. 0x11ea9d57399edff7ba76c68f4697da1209c2f4030c04fa9769597f7a7ebd5962
7. 0x245a26506813f330fc2f57815ea9c9c3cf3af454ea15e1c8fa2e1648bce456d8
8. 0x26ed6e11bd31ef075faf450a6ee6bda078bd48e41740d53dcb468506afddc981
9. 0x8ef6530824615af36b1bd7b35686e238ae98f9a507ea890d03e6d6b3df18d33c
10. 0x6487a391c112421d6d0b92e0372d1e4a5fd6afe541f565a9dde5c636d1ae4643
11. 0x71f472bb5c514dca2395c7842916e5cae63a9c622d8bc8f84b07a986c5ba91a1
12. 0xfde157310fc8513767b162378ca9ceefb2937c374b7381a8887f7ccba8ab5a80
13. 0x9d75d4d3ab6219edefa04be60b32fdd56be7a7672f370a5115f02f7b098ecd27
14. 0x9dfd312f3d4937f7cb144cee3987e8516f222932b4ea286605236d73cfa1ed16
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae