Layer 2, Dlc, Bitcoin.
broadcasts $s’:=k-hash(EvenNumber,R) ⋅ z$ Withdrawal: Either Alice or Bob can withdraw the assets based on the s or s′ broadcasted by the Oracle. If the Oracle broadcasts s, Alice can compute the new private key sk^{Alice} and withdraw the locked 2 BTC $sk^{Alice}:= x + s.$ If the Oracle broadcasts