Chapter 3 assessment 3

1. Which script returns true if <input> is either 0x00 or 0x01?

• <input> OP_DUP OP_IF OP_1 OP_ELSE OP_FALSE OP_ENDIF OP_NUMEQUALVERIFY

• <input> OP_IF OP_1 OP_NUMEQUALVERIFY OP_ENDIF

• <input> OP_DUP OP_NOTIF OP_RETURN OP_ELSE OP_1 OP_NUMEQUALVERIFY OP_ENDIF

• <input> OP_IFDUP OP_IF OP_1 OP_EQUALVERIFY OP_ENDIF OP_1

1. Which script fails if <input0> <input1> and <input2> are 0, 1 and 2 respectively?

• <input0> <input1> <input2> OP_0 OP_EQUALVERIFY OP_1 OP_EQUALVERIFY OP_2 OP_EQUALVERIFY

• <input0> <input1> <input2> OP_2 OP_EQUALVERIFY OP_1 OP_EQUALVERIFY OP_FALSE OP_EQUALVERIFY OP_TRUE

• <input0> <input1> <input2> OP_2 OP_ROLL OP_NOTIF OP_SWAP OP_1 OP_EQUALVERIFY OP_2 OP_EQUALVERIFY OP_1 OP_ENDIF

• <input0> <input1> <input2> OP_SWAP OP_PICK OP_PICK