Permissioned Ledger
A Permissioned Ledger is a ledger that is permissioned where its participants are preselected or subject to gated entry on satisfaction of certain requirements. Such requirements could for instance be that a participant must satisfy KYC and AML requirements before being given entry. It could also be a requirement that he/she should be approved by an administrator of the blockchain before being granted entry. A permissioned ledger may use a consensus protocol for determining what the current state of a blockchain should be, or it may use an administrator or sub-group of participants to do so.