Cruzbit: A simple decentralized peer-to-peer ledger

If you have a good and easy to find SHA3 and Ed25519 implementation for your development environment (as the Go language has built-in here and here) you don’t need any other external dependencies to craft a validly signed cruzbit transaction. Whereas public key P paying public key K 2 cruzbits could very well look the same as another transaction in the future which involves the same keys for the same amount. But this all means cruzbit network nodes can “forget” about transactions older than the previous series for the purpose of processing new

Source: medium.com