Register for an API key to start anchoring file hashes to the Bitcoin blockchain. Your email is never stored — only a one-way hash is kept for key recovery.
Used only as a recovery identifier — never stored, never emailed. Only a one-way hash is kept.
You'll receive a primary key for daily use and a backup key for recovery. Both are shown on screen — save them before leaving this page.
Use your backup key to issue a new primary key. If you only have your email, we'll remind you where to find the backup key.
If you registered with an email, enter it here to confirm your account exists.