Layer 2, Dlc, Bitcoin.
(n+k)-th block appears, the Oracle generates the corresponding s or s′ based on the hash value of that block. If the hash value of the (n+k)-th block is odd, the Oracle computes and broadcasts $s:=k-hash(OddNumber, R) ⋅ z$ If the hash value of the (n+k)-th block is even, the Oracle computes and