Evidence row 293535

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Public company profile: summary plus firmographics (industry, HQ city/country, founded year, employee count and size range, ticker, LinkedIn/X), each field with source, source_url, checked_at and confidence, from Wikidata, Wikipedia, the company homepage and SEC EDGAR. Unknown fields are null, never guessed. Not a contact or CRM record. Price: $0.10 USDC on Base per call via x402; this MCP call returns payment instructions and the paid HTTP route POST /v1/basic returns the brief. Read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "company": {
            "description": "Company name, for example \"Stripe\".",
            "examples": [
              "Stripe"
            ],
            "minLength": 1,
            "type": "string"
          },
          "domain": {
            "description": "Optional company website domain without https, for example stripe.com. Improves accuracy and enables the public website crawl.",
            "examples": [
              "stripe.com"
            ],
            "type": "string"
          }
        },
        "required": [
          "company"
        ],
        "type": "object"
      },
      "name": "basic_lookup"
    },
    {
      "description": "Find one person's work email at a company domain. Returns the address, whether it was found publicly or inferred from the company's pattern, Hunter's real verification status (valid, accept_all, unknown, invalid), a confidence score, the pages it was seen on and a recommendation. Price: $0.08 USDC on Base via x402, charged only when an address is returned (no result = not charged); this MCP call returns payment instructions for POST /v1/email. Read-only; never sends email. 'valid' means the mail server accepted the address, not that a person reads it.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "domain": {
            "description": "Company email domain, for example stripe.com.",
            "examples": [
              "stripe.com"
            ],
            "minLength": 3,
            "type": "string"
          },
          "first_name": {
            "description": "Person's first name.",
            "examples": [
              "Patrick"
            ],
            "type": "string"
          },
          "found_only": {
            "default": false,
            "description": "If true, return only addresses found publicly (no pattern inference).",
            "type": "boolean"
          },
          "full_name": {
            "description": "Alternative to first_name + last_name: the full name.",
            "examples": [
              "Patrick Collison"
            ],
            "type": "string"
          },
          "last_name": {
            "description": "Person's last name.",
            "examples": [
              "Collison"
            ],
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "email_lookup"
    },
    {
      "description": "Prospecting record: everything in basic_lookup plus buying signals (90 days of news, SEC filings), open roles from public job boards, a 0-100 ICP fit score with stated reasons (optional icp input), a sales brief built only from cited facts, recommended next actions and roles to target (no invented names). Every item cites its source. Price: $0.75 USDC on Base per call via x402; this MCP call returns payment instructions and the paid HTTP route POST /v1/enriched returns the record. Read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "company": {
            "description": "Company name, for example \"Stripe\".",
            "examples": [
              "Stripe"
            ],
            "minLength": 1,
            "type": "string"
          },
          "domain": {
            "description": "Optional company website domain without https, for example stripe.com. Improves accuracy and enables the public website crawl.",
            "examples": [
              "stripe.com"
            ],
            "type": "string"
          },
          "icp": {
            "description": "Optional ideal-customer profile for icp_fit: size_ranges (e.g. [\"51-200\"]), industries (keywords), countries (ISO-2).",
            "properties": {
              "countries": {
                "items": {
                  "type": "string"
                },
                "type": "array"
              },
              "industries": {
                "items": {
                  "type": "string"
                },
                "type": "array"
              },
              "size_ranges": {
                "items": {
                  "type": "string"
                },
                "type": "array"
              }
            },
            "type": "object"
          }
        },
        "required": [
          "company"
        ],
        "type": "object"
      },
      "name": "enriched_lookup"
    },
    {
      "description": "Find work emails for 1-25 people in one call, for cleaning a whole prospect list. Each result has exactly the same fields and recommendation labels as email_lookup (found vs inferred, Hunter's real status, score, sources, send / send_with_caution / verify_first / do_not_send), returned in input order with summary counts. Duplicates are looked up once; one contact failing never fails the batch. Price: x402 upto on Base: you authorize up to $0.08 x unique contacts and are charged $0.08 only per address returned. This MCP call returns payment instructions for POST /v1/email/batch. Read-only; never sends email.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "contacts": {
            "description": "1 to 25 people to look up. Each needs domain plus first_name and last_name, or domain plus full_name.",
            "examples": [
              [
                {
                  "domain": "stripe.com",
                  "first_name": "Patrick",
                  "last_name": "Collison"
                },
                {
                  "domain": "acme.com",
                  "full_name": "Jane Doe"
                }
              ]
            ],
            "items": {
              "additionalProperties": false,
              "properties": {
                "domain": {
                  "description": "Company email domain, for example stripe.com.",
                  "minLength": 3,
                  "type": "string"
                },
                "first_name": {
                  "description": "Person's first name.",
                  "type": "string"
                },
                "found_only": {
                  "description": "If true, only return an address Hunter found publicly for this contact.",
                  "type": "boolean"
                },
                "full_name": {
                  "description": "Alternative to first_name + last_name.",
                  "type": "string"
                },
                "last_name": {
                  "description": "Person's last name.",
                  "type": "string"
                }
              },
              "required": [
                "domain"
              ],
              "type": "object"
            },
            "maxItems": 25,
            "minItems": 1,
            "type": "array"
          },
          "found_only": {
            "default": false,
            "description": "Default for every contact: if true, return only publicly found addresses (no pattern inference).",
            "type": "boolean"
          }
        },
        "required": [
          "contacts"
        ],
        "type": "object"
      },
      "name": "find_emails_batch"
    },
    {
      "description": "Full sales prospect brief for one company: overview, positioning, likely needs and talking points, built from public sources with URLs. Price: $3.00 USDC on Base per call via x402; this MCP call returns payment instructions and the paid HTTP route POST /v1/deep returns the brief. Read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "company": {
            "description": "Company name, for example \"Stripe\".",
            "examples": [
              "Stripe"
            ],
            "minLength": 1,
            "type": "string"
          },
          "domain": {
            "description": "Optional company website domain without https, for example stripe.com. Improves accuracy and enables the public website crawl.",
            "examples": [
              "stripe.com"
            ],
            "type": "string"
          }
        },
        "required": [
          "company"
        ],
        "type": "object"
      },
      "name": "prospect_brief"
    },
    {
      "description": "Run one named public-source analysis: research_company, research_person, find_decision_makers, analyze_marketing_opportunity, identify_buying_signals, enrich_prospect, score_prospect or generate_prospect_brief. Fields with no verified public source come back as unknown rather than guessed. Price: $0.75 USDC on Base per call via x402; this MCP call returns payment instructions and the paid HTTP route POST /v1/tools returns the result. Read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "company": {
            "description": "Company name (for company tools).",
            "examples": [
              "Stripe"
            ],
            "type": "string"
          },
          "domain": {
            "description": "Optional company domain, for example stripe.com.",
            "examples": [
              "stripe.com"
            ],
            "type": "string"
          },
          "person": {
            "description": "Person's full name (for research_person).",
            "examples": [
              "Patrick Collison"
            ],
            "type": "string"
          },
          "tool": {
            "description": "Which analysis to run.",
            "enum": [
              "research_company",
              "research_person",
              "find_decision_makers",
              "analyze_marketing_opportunity",
              "identify_buying_signals",
              "enrich_prospect",
              "score_prospect",
              "generate_prospect_brief"
            ],
            "examples": [
              "score_prospect"
            ],
            "type": "string"
          }
        },
        "required": [
          "tool"
        ],
        "type": "object"
      },
      "name": "run_named_tool"
    }
  ]
}

What the leaf hashes

{"body":"655e173c77ef28d48ba817934111dbff05b0c6026e7fd278423958b8d8cd85be","id":293535,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793049448817080,"prev":null,"subject":"cb749a48-cf3f-4133-b008-bdb60f787134","subject_kind":"endpoint"}

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. 0x3a7ab932ad8e0b545f500989c986b80829486e1474e3fd0756300d370dea52b6
2. 0x4f6f229ab74a615797747d617fc2b0e0c5edc252b550dc83dbd23dada7f0af07
3. 0x1465e405239102c43ddbbb557fcc68090e7a51ca17f538579a9f7110660de6c5
4. 0x1ecbdd1fba638734b3c12d684dbf5390c3f42c1b29b953fb255507fa050d4497
5. 0xf81c5dfccbd40c808a351653535dc2a7ea2d6c28528e2ab105229866d4463695
6. 0x69cc15a1746799e0cce682ccf5488511583943502398db5903e64a61e82764fb
7. 0x96efebf547dd04a49fc95fef2e8de805dc4911ea9e342ed3e2a0b2b19dc92929
8. 0xa1e7fa76e6582a323e807afbf4cb047747c0dc9166cbc67a84e7665e74998bef
9. 0xee5641b3274e2e3e6711b6b9616f42c3f73f691667ec7d3fc9b759263b61a8fd
10. 0xdcc828e24b7442e8235bf18fc875c4401696d216b65ec037eb65cf2ef34782da
11. 0xd9b921e2251851de5c43bdbb4f58d5e2fa1aee215c84e0f3e0426cf1e4a08e8f
12. 0x18cc4431e4bbe45ee72defb9bb3318434364bf71c883055c6197fa7102ec601a
13. 0xe2214b3d6a48396930d1739b02ea366de2aac5337c9b9ff2aff28cecf6518139
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae