Hi @patrice the Disaster Recovery kit is designed specifically for the key share located exclusively on Fireblocks servers (Key Share #1).
In the event that Fireblocks ceases to exist and the customer wishes to empower the end-user to perform a full key takeover, the customer must establish an endpoint on their own system.
This endpoint will provide Key Share #1 (generated from the Disaster Recovery kit) to the SDK, enabling the reconstruction of the complete private key.