Evidence row 771042

What was observed

{
  "count": 2,
  "tools": [
    {
      "description": "PAID ($0.03 USDC via x402 on Base — Free-on-Miss: $0.00 charged if no deliverable email is found): Verified B2B Person Enrichment, Work Email Finder & LinkedIn-to-Email Resolver powered by Apollo.io. Accepts partial identifiers—(1) first_name + last_name + company domain or organization_name, (2) LinkedIn profile URL (linkedin_url), or (3) email (reverse email lookup)—and returns a deterministic JSON profile with deliverable work email, verification status, job title, seniority (founder, C-suite, VP, director), company firmographics (headcount, industry, founded year), and full employment history. Zero signup or API key required.",
      "inputSchema": {
        "additionalProperties": true,
        "anyOf": [
          {
            "required": [
              "linkedin_url"
            ]
          },
          {
            "required": [
              "email"
            ]
          },
          {
            "required": [
              "id"
            ]
          },
          {
            "required": [
              "first_name",
              "last_name"
            ]
          },
          {
            "required": [
              "name"
            ]
          },
          {
            "required": [
              "first_name",
              "domain"
            ]
          },
          {
            "required": [
              "first_name",
              "organization_name"
            ]
          },
          {
            "required": [
              "first_name",
              "company"
            ]
          },
          {
            "required": [
              "last_name",
              "domain"
            ]
          },
          {
            "required": [
              "last_name",
              "organization_name"
            ]
          },
          {
            "required": [
              "last_name",
              "company"
            ]
          }
        ],
        "description": "B2B Person Enrichment & Verified Work Email Finder (Apollo.io): Accepts flexible partial person identifiers—such as (1) LinkedIn profile URL only ('linkedin_url' or 'linkedin'), (2) work or personal email only ('email' for reverse email lookup), (3) name ('name' or 'first_name' + 'last_name') with company domain OR fuzzy company name ('domain', 'organization_name', or 'company', e.g. 'Meta' or 'meta.com'), or (4) Apollo person ID ('id')—and resolves a deterministic B2B executive/prospect profile with verified work email, job title, seniority, department, location, company firmographics, and employment history. Free-on-Miss: only settles payment ($0.03 USDC) when a verified person and deliverable email are returned.",
        "properties": {
          "_x402_payment": {
            "description": "Optional x402 signed payment payload (if not passed via HTTP X-PAYMENT header)",
            "type": "string"
          },
          "company": {
            "description": "Alias for organization_name or domain (e.g., 'Meta', 'Stripe', 'instacart.com').",
            "type": "string"
          },
          "domain": {
            "description": "Company website domain or URL (e.g., 'apollo.io', 'stripe.com'). Also accepts a company name (e.g., 'Meta', 'Google') and automatically resolves the canonical domain.",
            "type": "string"
          },
          "email": {
            "description": "Known work or personal email address for reverse-email enrichment into full LinkedIn, title, firmographics, and career history.",
            "type": "string"
          },
          "first_name": {
            "description": "Target person's first name (e.g., 'Tim'). Optional if 'name', 'linkedin_url', 'email', or 'id' is provided.",
            "type": "string"
          },
          "id": {
            "description": "Optional Apollo.io person ID for direct profile hydration.",
            "type": "string"
          },
          "last_name": {
            "description": "Target person's last name (e.g., 'Zheng'). Optional if 'name', 'linkedin_url', 'email', or 'id' is provided.",
            "type": "string"
          },
          "linkedin_url": {
            "description": "Public LinkedIn profile URL (e.g., 'https://www.linkedin.com/in/tim-zheng') to resolve directly into a verified work email and company profile.",
            "type": "string"
          },
          "name": {
            "description": "Target person's full name (e.g., 'Tim Zheng'). Automatically split into first_name and last_name if needed.",
            "type": "string"
          },
          "organization_name": {
            "description": "Company or organization name (e.g., 'Apollo.io', 'Meta', 'Google', 'Stripe') if exact domain is unknown.",
            "type": "string"
          },
          "reveal_personal_emails": {
            "description": "Whether to include verified personal emails if a corporate work email is unavailable (default: false).",
            "type": "boolean"
          }
        },
        "type": "object"
      },
      "name": "enrich_person"
    },
    {
      "description": "FREE pre-flight discovery tool: Inspect live x402 pricing ($0.03 USDC on Base, Free-on-Miss), deterministic JSON input/output schema, SLA latency telemetry, and recent verifiable Base settlement txHashes for Apollo.io B2B Person Enrichment & Work Email Lookup.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "get_enrichment_quote"
    }
  ]
}

What the leaf hashes

{"body":"7dd0bd532c78e9ea27a5f54591372dd510738d647a16cddebcd0c6b20073c1c7","id":771042,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793188617480021,"prev":573357,"subject":"5c042f98-2142-46eb-af78-1bf29afefe67","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0xec27a2ff6d13fd66c3d20f85669b74e777eca64efeac281f8de75e57c4282195
2. 0x87ee3e174fd5f957b439ab626843504b9714fbabbac795254a5970533f022590
3. 0x82db81a55d41c964d9f19960ee169a0a470efadbb1bce525aab420908c0388ff
4. 0x66ceabfe7b9c1b40ee74569f7ebbc854f2ae84d35839f5374237dc2fbe21b7c3
5. 0xc2679586e774dc0ba79b30944544b53e8778e3f822035b79e8d19dc64d32160d
6. 0xe1391b18f8fd78879d8648e8f16c56b95fb755a4fcd198586422aef3b8fa8447
7. 0x27fc354e92156d9d0f4ca35efbf85d222fe0f7b2ec327e668c8e31403d1230d8
8. 0x7e2de28b8b0b0434efb6db3132c18ff9a15b46e2643cb9e187b1dbc3aff177eb
9. 0xeb9dd62abe4849ca13723268945750b434421119f8a5a9ca9f8aef69033e28f9
10. 0x395b64df1276a195da1fca31023ef7539906d2d67c4677ad428a8e80e9075579
11. 0xd82f6773c63cc57ac8d8723197c3003f6ec145c5ed9830fbc47d8f1ef00e2701
12. 0x5abd41e7b7a1931919102fa4bdc992773ad45a071b408cf09a3d949e46f9215f
13. 0x7c7680a693651307890c3f1e37c63eee03c1c637cfe36c210695030d5edb22bc
14. 0xfb2274fa79452c1e494276a3ee3eadb7c66f76a08a80f6923416f3d591053e02
15. 0x33bfb51cb957137510d8a1502cd50241c4c0982e2741290f3b8f2d2b1e69de70
16. 0xef2ebd45f2cfd41dc3eb213cc4cc144c46b7e9ead2de0b9f627463bad16e3ec8
17. 0x67e9ff3e48c515135fcf3df2675aa4996d35d4a328ce41588ee1a7d93347c823
18. 0xe6cfe00ae4e02bc12327e45b5f3334ea5850ba3bcc8e3101d30a8189856a95af

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae