A 4-bar drum pattern, encoded in the URL itself. No server state, no accounts, no app. Make something. Press the copy button. Paste it into iMessage, a DM, anywhere a link works.
Every cell you toggle is a bit. The pattern is 4 voices × 16 steps = 64 bits = 8 bytes. Add 1 byte for BPM and you've got 9 bytes — a string of 12 base64url characters. That's the entire message. The URL /drum-bottle?p=AAQACAAQACAA&from=abcd contains a real, playable phrase.
There is no server. There is no account. There is no row in any database. The link is the message. You can paste it into iMessage and the recipient will see a tiny preview card; you can text it as plain text; you can put it in your bio. Open it on any device that runs a browser, click ▶, hear the drum.
The from param is your live-bus pid prefix — the first 4 chars of sha256(your-session-id). Stable across your devices, not identifying. Over time you'll recognise a friend's prefix without having any account system. That's the social layer.
Every bottle you copy or receive lands in your private shelf — a local-only list living in localStorage on your device. The shelf never leaves your browser; nothing about it goes to a server. Send anyone a phrase and a week later you can still find it back.
