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Bitcoin evolution: unpacking significance op_checxigverify
Bitcoin’s basic technology has suffered significant changes over the years, with each upgrade built on the previous one. One notable example is to add a multisig transaction to Bitcoin Cash (BCH). In this article, we will investigate why Op_checxigverify Opcode was selected as the first surgery for a multisig transaction and explore its implications.
Multisig transaction: deeper dive
Transactions from multisignature are a key feature in CRIPTO currency, which allows more parties to agree to a transaction without a veto. The most common implementation is the “unique” scheme (1-0-1), where only one signature can be valid.
In 2018, Bitcoin Cash (BCH) was upgraded to include a multisig transaction in its basic protocol. This change has introduced a new opcode: op_checxigverify '.
Reason behind op_checxigverify
Op_checxigverifyis not just simple op_checxigimplementation; It is actually the first step towards the implementation of the true functionality of multisignature in Bitcoin cash.
In traditional signatures, only one side can sign a transaction and control its outcome. This restriction limits cases of use of a crypto currency that require multiple sides to suppress transactions. In BCH, this problem is mitigated by the introduction of a hierarchical determinist (HD) of the wallet system, which allows users to create complex wallets with multiple private keys.
Op_checxigverifyOpcode is responsible for confirming the signature from each signatories in the multisig transaction. Acts as follows:
- The entrance of the transaction contains a list of signatories and their appropriate private keys.
- Each signatory sends its own public key, checked by other signatories.
- If the public key to the signator coincides with the expected, they may continue signing a transaction using their private key.
op_checxigverify vs. Op_checxig
Op_checxigOpcode itself would only confirm the signatures only from more signatories without taking into account the specific requirements of the BCH multisig system. This leads to several questions:
* I inefficient validation :op_checxigcan be slow and intense, which could adversely affect the total efficiency of BCH transaction.
* Lack of Security : It provides no additional security features compared to traditional signatures.
The introduction ofop_checxigverifydeals with these problems by providing a safer and more efficient way to check multisignation transaction in BCH. The use of hierarchical determinated wallets ensures that more signatories can sign transactions, whileOp_checxigveryrify ‘opcode opcode provides strong signature checking mechanisms.
Conclusion
In conclusion, the choice of op_checxigverify as the first operation for multisig transaction in Bitcoin cash is a deliberate design decision aimed at improving the total security and efficiency of BCH. Understanding the implication of this change, developers can better appreciate innovative features that make Bitcoin cash unique and attractive to users.
Example Code: Op_checxigverify
To illustrate how op_checxigverify 'works, here's an example in Python:
Python
Import the hashlib
Def Verify_signature (Signer_public_KEY, Signature):
Use a safe function of hash like a SHA-256
Hashed_signature = hashlib.sha256 (p (signature) .encode ()). Digest ()
Extract the private key to the signatories from their public key
Private_KEY = SIGNER_PUBLIC_KEY.HEX ()
Private_bytes = Bajit.fromhex (Private_Key)
Calculate the expected signature using a private key
expected_signature = hashlib.sha256 (Private_bytes).