Chapter 3 assessment 4

Assessment

1. Which script will be successful if <input> is 0x1234

• <input> OP_1 OP_SPLIT OP_4 OP_EQUALVERIFY OP_1 OP_SPLIT OP_3 OP_EQUALVERIFY OP_1 OP_SPLIT OP_2 OP_EQUALVERIFY

• <input> OP_1 OP_2 OP_3 OP_4 OP_CAT OP_CAT OP_CAT OP_EQUALVERIFY OP_TRUE

• <input> OP_SIZE OP_2 OP_EQUALVERIFY OP_1 OP_SPLIT OP_SWAP Ox12 OP_EQUALVERIFY 0x34 OP_EQUALVERIFY OP_TRUE

• <input> OP_1 OP_SPLIT OP_1 OP_SPLIT OP_1 OP_SPLIT OP_SWAP OP_CAT OP_SWAP OP_CAT OP_SWAP OP_CAT 0x4321 OP_EQUALVERIFY OP_TRUE

1. Which script will be unsuccessful if <input1>, <input2> and <input3> are 0x12, 0x34 and 0x56 respectively?

• 0x56 OP_EQUALVERIFY 0x34 OP_EQUALVERIFY 0x12 OP_EQUALVERIFY OP_TRUE

• OP_ROT OP_CAT OP_CAT OP_SIZE OP_CAT OP_16 OP_NUM2BIN 0x345612 OP_EQUALVERIFY

• OP_2DROP

• OP_3DUP OP_3 OP_ROLL OP_EQUALVERIFY OP_2 OP_ROLL OP_EQUALVERIFY OP_EQUALVERIFY OP_TRUE