Evidence row 3755771

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.oldcolonyweb.com/v1/domain/mail-posture"
    ],
    [
      "x402",
      "https://api.oldcolonyweb.com/v1/email/batch"
    ],
    [
      "x402",
      "https://api.oldcolonyweb.com/v1/email/batch/50"
    ],
    [
      "x402",
      "https://api.oldcolonyweb.com/v1/email/verify"
    ],
    [
      "x402",
      "https://api.oldcolonyweb.com/v1/payment/self-test"
    ]
  ],
  "name": "api.oldcolonyweb.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "api.oldcolonyweb.com",
    "endpoints": [
      {
        "description": "For $0.003 per domain: bounded public DNS MX, SPF and DMARC observations; explicit unknowns and source names. No mailbox, deliverability, spoofing-prevention or security-certification guarantee.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "example.com",
            "group": "body",
            "name": "domain",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "3"
        },
        "serviceName": "Old Colony Web Agent Services",
        "tags": [
          "domain mail posture",
          "MX records",
          "SPF record",
          "DMARC policy",
          "email DNS"
        ],
        "url": "https://api.oldcolonyweb.com/v1/domain/mail-posture"
      },
      {
        "description": "Email preflight 2–10 addresses for $0.003 per batch. Ordered syntax/DNS/MX/disposable evidence and explicit unknowns. Addresses processed, not intentionally logged in routine telemetry. No mailbox, deliverability or consent guarantee. Bazaar response example shows the first result only; actual response includes all items.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": [],
            "group": "body",
            "name": "emails",
            "required": false,
            "type": "array"
          }
        ],
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Old Colony Web Agent Services",
        "tags": [
          "batch email preflight",
          "email verification",
          "disposable email"
        ],
        "url": "https://api.oldcolonyweb.com/v1/email/batch"
      },
      {
        "description": "Email preflight 11–50 addresses for $0.005 per batch. Ordered syntax/DNS/MX/disposable evidence and explicit unknowns. Addresses processed, not intentionally logged in routine telemetry. No mailbox, deliverability or consent guarantee. Bazaar response example shows the first result only; actual response includes all items.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": [],
            "group": "body",
            "name": "emails",
            "required": false,
            "type": "array"
          }
        ],
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "3"
        },
        "serviceName": "Old Colony Web Agent Services",
        "tags": [
          "batch email preflight",
          "email verification",
          "disposable email"
        ],
        "url": "https://api.oldcolonyweb.com/v1/email/batch/50"
      },
      {
        "description": "For $0.002, privacy-conscious email preflight: submitted addresses and request bodies are not intentionally logged in routine application telemetry (full address still reaches our server). Inspect syntax, DNS/MX, listed disposable domains and provider typos; receive structured decisions. API reverse-proxy access logging is disabled; infrastructure/payment providers may keep records. No zero-retention, mailbox-existence, deliverability or consent guarantee.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "name@example.com",
            "group": "body",
            "name": "email",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "22",
          "l30DaysUniquePayers": "10"
        },
        "serviceName": "Old Colony Web Agent Services",
        "tags": [
          "email verification",
          "email validation",
          "disposable email",
          "email preflight",
          "email typo"
        ],
        "url": "https://api.oldcolonyweb.com/v1/email/verify"
      },
      {
        "description": "For $0.002, test a real x402 v2 exact USDC payment on Base and receive an intentionally simple JSON handler result. The successful final HTTP response and PAYMENT-RESPONSE header (not the body alone) are evidence of the x402 settlement flow. No refund, wallet-balance check, blockchain-finality guarantee, variable tip, data lookup or downstream action. Do not retry an ambiguous charge blindly.",
        "method": "POST",
        "parameters": [],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Old Colony Web Agent Services",
        "tags": [
          "x402 payment self test",
          "agent wallet test",
          "payment diagnostic",
          "Penny Wish"
        ],
        "url": "https://api.oldcolonyweb.com/v1/payment/self-test"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "api-oldcolonyweb-com",
    "integrationType": "",
    "isNew": false,
    "name": "api.oldcolonyweb.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.003",
      "currency": "USDC",
      "maxAmount": "0.005",
      "minAmount": "0.002"
    },
    "provider": "api.oldcolonyweb.com",
    "providerUrl": "",
    "serviceName": "Old Colony Web Agent Services",
    "tags": [
      "domain mail posture",
      "MX records",
      "SPF record",
      "DMARC policy",
      "email DNS",
      "batch email preflight",
      "email verification",
      "disposable email",
      "email validation",
      "email preflight",
      "email typo",
      "x402 payment self test",
      "agent wallet test",
      "payment diagnostic",
      "Penny Wish"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"232144ca6f4112e83145538c3c2ffac8a07461b9036ba665fb3163441d76b78c","id":3755771,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793989718878778,"prev":3047636,"subject":"agentic_market:api-oldcolonyweb-com","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-06 (303443 rows).

1. 0xfa33d279a8574bcced85e473a056de56531939c2db1469b0eb21d82e23fb1c90
2. 0x99b7fb72f59cf819c32ba2e6023603d11dc8684cb7bf869bb0abfb9b49bcb969
3. 0x0573c5da42c98dc9feed2885f12a655f7e862b45ba0b870cb0c81b47a3038dac
4. 0x2b5d1b3420f333abe49fd019ec14235c43dbbbb8d2209900c31b286d64e8b4db
5. 0xdc725a896dc9e39d4f5be640c815bd66f10257b80f2a3f85571a7b370b2cdc8a
6. 0x897606f421f6b04c0c2bd88df76c85c12eb5acb13a90e49b28b4f13f69a70d38
7. 0xcc55ad309bc20a5051f110a41aab9f34a5ea9af11462b7cc613f8ddac5620669
8. 0x69504cc4d64a56edaea0f1fdcb008a995433c79739dc934fe453fadd9db9b8b2
9. 0x5101805acebce8527a144ae45070c85540775fc56eee09c3a7229681b8eec5f2
10. 0x8481dc3f00309dfdc3f0e3f6600b194d2dee8b7104dfa7708012f664366c56e2
11. 0x5de3758009ccdbbc7388d564d4039dee9b0ee364aa42f2dac9a313bcd61c0055
12. 0x002d4d2332b6d6d035662bfd55b0d66d54bd68c054837f8d4c27359d6aefbb66
13. 0x4b73a433b9ae93404a8d07a5cfc0c3e56faff97df16d84b9926cc2c4072d26a2
14. 0x86593ac15f658012908c6be3447438c3409f4e6b92fd02ad8b0b2a8f74233080
15. 0x4d1da9738e22475b7194f6dd7a6c3348b6abb938507afdcb6452d859f52556b2
16. 0x0ab273486ad4e41bf08c741b20b2ee12e0fc87eaa429a5467c58fd3be34409b9

Day root

0xb30ccefe7182c6f767e1fcbfb5f64ffd649da831f665f65c5ff39cd40512284f

Chained

0xc383f7ef68d2914082484765aa09e42c12c59a74a096ae64127c562618c506d3

Published

On Arc Testnet, block 71111178: 0xfba13cb7ee4ada7f2fee3702a786a2201596be2ffea37dfc281ab4c8e9942fe1