This MUST NOT be used for gambling, as it can be influenced by a
malicious validator in the short term. It MAY be used in many
cryptographic protocols, however, so long as one remembers that this
(like everything else on-chain) it is public. For example, it can be
used where a number is needed that cannot have been chosen by an
adversary, for purposes such as public-coin zero-knowledge proofs.
The epoch randomness for the current epoch.
Security
This MUST NOT be used for gambling, as it can be influenced by a malicious validator in the short term. It MAY be used in many cryptographic protocols, however, so long as one remembers that this (like everything else on-chain) it is public. For example, it can be used where a number is needed that cannot have been chosen by an adversary, for purposes such as public-coin zero-knowledge proofs.