TACET — verifiable silence for AI training-data disclosure. Hourly epochs opened by drand, closed by Bitcoin; a public predicate over model cards; offline-verifiable proofs of absence as crovia.seal.v1. Spec, reference, conformance vectors, live operator.
Avikal is a post-quantum archival security app using Chess-PGN metadata encoding, Devanagari keyphrases, AES-GCM encryption, PQC key protection, and TimeCapsule locking to preserve sensitive files with stronger privacy.
Lock a secret until a future date — so nobody, not even you, can read it early. Timelock encryption (drand/tlock) with a Textual TUI and a scriptable CLI; only ciphertext is stored in your private GitHub repo, and the decryption key doesn't exist until the unlock time.
