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Write first. Your Nostr key is requested only when you seal the message.

Your message

Tower connection

Descriptor lookup relay(s) Used to find the signed descriptor, especially for a raw npub. A verified descriptor supplies the Tower’s actual command relays. Separate multiple relay URLs with commas.

Recipient’s Nostr public key Ask for your pulse every

Tower The tower stores only the sealed capsule, asks for your pulse, and releases it after the deadline if you do not respond. tower.lastpub.io is the default operated by lastpub; you can enter any compatible self-hosted tower as a domain, NIP-05 address, or npub. Before sealing, lastpub verifies and pins the tower’s signed protocol descriptor; an existing message never follows a later key change. Also publish publicly after the deadline The personal copy stays encrypted for the recipient. The public copy remains time-locked and is signed by the tower only after release.

Nothing is signed while you write. On submit, your signer encrypts the draft, capsule, and tower request.