Bitcoin Evolution: Unpacking the meaning of op_checksigverify
Bitcoin’s basic technology has undergone significant changes over the years, each upgrade construction on the previous one. A notable example is the addition of multiSig transactions in Bitcoin Cash (BCH). In this article, we will deepen the reason why opcode op_checksigverify was chosen as the first operation for Multisig transactions and we will explore its implications.
Multisig transactions: a deeper dive
Multisignature transactions are a crucial feature in cryptocurrencies, allowing several parties to consent to a transaction without being able to vet it. The most common implementation is the “unique” scheme (1-0-1), where only one of the signatures can be valid.
In 2018, Bitcoin Cash (BCH) was modernized to include multiSig transactions in its basic protocol. This change has introduced a new opcode: op_checksigverify.
Reason behind Op_CheckSigverify
Op It is actually the first step towards the implementation of a real multisignature functionality in Bitcoin Cash.
In traditional signatures, a single part can sign a transaction and control its result. This limitation restricts the cases of use of cryptocurrencies that require several parties to co-establish transactions. In BCH, this problem is mitigated by introducing a hierarchical deterministic (HD) wallet system, which allows users to create complex wallets with multiple private keys.
Opcodeop_checksigverifyis responsible for validating the signature from each signatory in the Multisig transaction. Works as follows:
Op_checksigverify vs. Op_checksig
The only OPCodeop_checksiga would only validate the signatures from several signatories without taking into account the specific requirements of the Multisig of BCH system. This leads to more problems:
* Inefficient validation : OP_Checksig can be intense and intensive in resources, which could have a negative impact on the general performance of BCH transactions.
* Lack of security
: It does not provide additional security features compared to traditional signatures.
The introduction of op The use of hierarchical deterministic wallets ensures that several signatories can co-sign transactions, while theop_checksigverifyopcode offers robust signature verification mechanisms.
Conclusion
In conclusion, the choice ofop_checksigverifyas the first operation for MultiSig Bitcoin MultiSig transactions is a design deliberation decision aimed at improving the general security and efficiency of BCH. Understanding the implications of this change, developers can better appreciate innovative features that make Bitcoin money unique and attractive to users.
Example of code: Op_checksigverify
To illustrate howop_checkverify work, here’s an example in Python:
“ Python
import hashlib
Def Verific_Signature (Signer_public_key, signature):
Use a safe hash feature like Sha-256
Hashed_signature = hashlib.sha256 (str (signature) .encode ()). digest ()
Extract the private key to their public key
Private_Key = Signer_public_key.Hex ()
Private_bytes = Bytes.Fromhex (Private_Key)
Calculate the expected signature using private key
expected_signature = hashlib.sha256 (private_bytes).
