A definite function's ability to provide results that pass statistical tests for randomness is referred to as pseudorandom.
Encryption
Information can be converted into code using encryption, which conceals the true meaning of the data.
Off-Chain
All network users can see on-chain transactions because they are recorded on the distributed ledger. Off-chain transactions, however, take place away from the blockchain network
Testnet
An alternative blockchain used by developers for testing.