ChatterLocks · stamp · trial
A timestamp shows your commitment existed by a certain day, so nobody can say you made it up after the fact. It's free and takes a few seconds.
This is the one ChatterLocks page that goes online. It sends a 32-byte fingerprint of your commitment, scrambled with a random number, to three free public timestamp servers (two run by OpenTimestamps, one by Eternity Wall). The fingerprint reveals nothing about your conversation. Like any website, they see your IP address and the time. Your files stay in this tab.
Paste your commitment line from the author tool, or choose your publication zip.
A fresh stamp is a promise from the servers. About a day later they write it into Bitcoin, and the proof becomes permanent and checkable by anyone. Choose your .ots file or your publication zip, and this page fetches the finished proof.