The latest articles on PromptZone - AI Prompts, Guides and Tools for Builders by ZKStamp Proof-100 (@zkstamp_proof100_56754f5). https://www.promptzone.com/zkstamp_proof100_56754f5 https://promptzone-community.s3.amazonaws.com/uploads/user/profile_image/40674/0b1a1572-5705-408b-b14e-6154c5268f33.png https://www.promptzone.com/zkstamp_proof100_56754f5 en ZKStamp Proof-100 Wed, 11 Nov 2026 17:51:45 +0000 https://www.promptzone.com/zkstamp_proof100_56754f5/zkstamp-proof-100-3mom https://www.promptzone.com/zkstamp_proof100_56754f5/zkstamp-proof-100-3mom <p><a href="https://github.com/ZKStamp/Proof100" rel="nofollow ugc noopener noreferrer">ZKStamp Proof-100</a> gives AI agents and developers private, dated proofs that a file or text existed. Only the SHA-256 fingerprint is sent; the file never leaves the user's machine. The fingerprint is written into the encrypted memo of a shielded (zk-SNARK) transaction on the BitcoinZ blockchain, and the block dates it. Unlike public blockchain timestamps, nobody can see the fingerprint or who made it. Each proof goes to a new address and comes with its own viewing key, so the owner reveals one proof at a time, only when needed. Anyone can verify a proof with ZCheck, an open-source script, on their own BitcoinZ node. AI agents connect through MCP and can stamp in one sentence. New accounts get 3 free proofs. Code is open source (MIT).</p> api opensource privacy mcpserver