spArxx.io | Zero-Knowledge Blockchain Timestamping
Partner, reviewedProve you made it first. Timestamp your creative work on the blockchain via Claude or any MCP-enabled AI agent.
A connector: add it in the Claude app under Settings, Connectors; Claude Code signed in to the same account can use it too. There is nothing to install from a terminal.
A tool for human creators to register and protect what they brought into existence. Your file is never uploaded, watermarked, or altered. Our process is zero-knowledge by design, only your file's cryptographic fingerprint ever reaches spArxx.io. What comes back is a timestamp: your independently verifiable record of having registered it first. The contents of your files remain private to you. Built on MCP (the same open standard Claude uses for secure, authenticated tool access), the spArxx.io connector lets your AI register timestamps, check your balance, retrieve receipts, and verify…
From Anthropic's public plugin directory, read on 2026-10-15. Find a skill by task.