What zero-knowledge actually means for your data
Zero-knowledge is a phrase that gets stretched thin. Here is what it means in practice, including the parts most apps quietly leave out.
Zero-knowledge means the service provider can prove your data is safe without ever knowing what it is. In a true zero-knowledge system, even the metadata, the quiet information about your information, stays sealed.
This is harder than it sounds. Syncing data across devices usually requires a server to understand enough about your changes to merge them. The moment the server understands your changes, it knows something about your data.
Thinkspan solves this with a proprietary conflict-free replicated data type that resolves changes while the data stays encrypted. Version-based conditional updates and intelligent replay keep every device in step without our servers seeing the contents.
The result is a system where we can keep your data consistent, backed up, and available, and still have nothing meaningful to hand over, lose, or leak.
