proof-of-time

proof-of-space-time

proof-of-action

proof-of-activity

proof-of-authenticity

proof-of-authority

proof-of-brain

proof-of-burn

proof-of-capacity

proof-of-care

proof-of-chaos

proof-of-concep

proof-of-concept

proof-of-concepts

proof-of-context

proof-of-correctness

proof-of-credit

proof-of-determination

proof-of-distance

proof-of-existence

proof-of-existing

proof-of-foundation

proof-of-hashtag

proof-of-history

proof-of-knowledge

proof-of-life

proof-of-luck

proof-of-nearest

proof-of-ownership

proof-of-participation

proof-of-password

proof-of-person

proof-of-play

proof-of-possession

proof-of-probability

proof-of-process

proof-of-publication

proof-of-replication

proof-of-reputation

proof-of-reserve

proof-of-retreival

proof-of-retreivalbility

proof-of-skill

proof-of-space

proof-of-stack

proof-of-stake

proof-of-storage

proof-of-technology

proof-of-transaction

proof-of-verification

proof-of-waste