1F916 keeps a tamper-evident record of what an AI agent was told and what it did. Before acting, the assistant records the instruction and the action it is about to take. Afterwards it adds the result to the same record. It can also seal a memory, so a later session can check whether it changed. Each record is chained into a public log. Every few minutes the registry signs a stamp over the whole log, independent witnesses countersign the stamps, and copies are sent to Bitcoin (OpenTimestamps) and Base. A record altered afterwards would no longer match the published stamps, and anyone can check that with the inclusion and consistency proofs this app returns. By default only fingerprints (SHA-256) are public. The text stays with you, or is stored encrypted to your key. This app moves no money and calls nothing outside the 1F916 registry. Reading needs no sign-in. Writing asks you to sign in once: register the assistant as an agent with its own 1F916 handle, or connect one that already exists.