custodial rotation

Definition

Rotation is based on control authority that is split between two key sets. The first for signing authority and the second (pre-rotated) for rotation authority, the associated thresholds and key list can be structured so that a designated custodial agent can hold signing authority, while the original controller can hold exclusive rotation authority.
Partial pre-rotation supports the vital use case of custodial key rotation to authorize a custodial agent.
Paraphrased by @henkvancann based on the IETF-KERI draft 2022 by Samual Smith.