Question: Write the op_checkmultisig function of op.py. Write the h160_to_p2pkh_address function that converts a 20-byte hash160 into a p2pkh address. Write the h160_to_p2sh_address function that converts

Write the op_checkmultisig function of op.py. Write the h160_to_p2pkh_address function that converts a 20-byte hash160 into a p2pkh address. Write the h160_to_p2sh_address function that converts a 20-byte hash160 into a p2sh address.

Write the verify_input method for the Tx class. You will want to use the TxIn.script_pubkey, Tx.sig_hash, and Script.evaluate methods.

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