Tortuga is a place where you can delegate APT to validators. Stake APT, receive tAPT to use all across the ecosystem. Tortuga Finance receives delegations and routes them to validators who are signed up for the protocol. Currently, validator registration is a permissioned process but will transition to a permissionless process over time. When a validator registers, they specify the commission rate they will keep on staking rewards generated on user delegations via the protocol.