beat-key, a server that releases one piece of a time-lock key

Field notes

The page describes a node in a distributed system for time-sealed envelopes rather than a conventional web application. It publishes a BLS signature share for a requested beat index, returns 404 before that share is released, and exposes /info and /healthz for inspection. The operator says a single share cannot open an envelope and that the host handles neither ciphertext nor user records. It also points to the envelope format, protocol, source, reproducible builds, and operator guide.