Anastasis lets you save your secret on several escrow providers. You can choose different combinations of these providers to recover your secret. The various providers provide different authentication methods (like SMS, secure question or E-Mail) which the user has to supply to recover their secret.
Anastasis is based on well-known cryptographic techniques. Our resulting solution offers post-quantum security. A compromised database of an individual Anastasis service provider by itself never leaks information that would be by itself sufficient to recover any core secret of any user.
Anastasis does not safe any data from the user except for the few details needed for authentication and recovery of the secret. When using Anastasis, only the user is capable to recover their secrets. Users can pay anonymously for the service, and switch service providers at any time.