#### Problem The `RecentBlockhashes` sysvar is not available to BPF programs, but it's required by System to validate a recent blockhash for nonce creation. #### Solution Evaluate a new syscall for performing this lookup, without deserializing all of the data.
Problem
The
RecentBlockhashessysvar is not available to BPF programs, but it's required by System to validate a recent blockhash for nonce creation.Solution
Evaluate a new syscall for performing this lookup, without deserializing all of the data.