"OpenTimestamps - Bitcoin-based timestamping protocol" matching MCP connectors:

The GVRN Incorporation MCP is a public Model Context Protocol (MCP) server that lets AI agents — on any LLM provider — collect and submit company incorporation requests to GVRN on a user's behalf. Every submission is reviewed by GVRN's corporate secretarial team, who follow up with the user by email. All fields are optional, so an agent can submit early with whatever the user has provided and let a specialist fill in the gaps.

eu-verify lets AI agents verify any European business partner: company existence (official French SIREN registry), insolvency records (BODACC), EU VAT validation before invoicing (VIES), SIRET/IBAN/LEI checks, address and email verification, French business-day deadlines and EU public tenders. 10 paid MCP tools + a free catalog tool, plus 81 HTTP endpoints. Each call costs $0.001-$0.01 in USDC on Base via the x402 protocol - no account, no API key, never billed for failed answers. Official sourc

Qualified eIDAS RFC 3161 timestamping for AI workflow provenance. SIGNIUS/IDnow backbone.

Privacy Protocol directory, guides, diagnostics, formation intake. 23 tools, 7 resources, 6 prompts.

Trust-scored search engine for MCP servers. 1,900+ sources indexed. IETF draft published. Referenced by OWASP MCP Security Cheat Sheet. L0-L4 trust levels based on cryptographic verification.

Bitcoin-anchored, tamper-evident audit-permanence layer for AI agents, FRE 902(13)/(14)-shaped.