I can provide you with an article on how to determine which type Sighash (signs of the hash algorithm) should be added to the input script in the time of checking the input script.
Understanding Bitcoin Transactions and Input Script
Bitcoin transactions consist of multiple inputs that require a check before they can be consumed. Each entrance has a unique index known as “Sheghash” or the signs used to check the private key that signs with it. Suppression determines the type of work (eg, check the signature, signature or broadcast) required for each entrance.
Manded transaction
The canceled transaction is the first 2-bajt segment of the entire Bitcoin transaction package that contains only the necessary information to check the input script. Usually includes the version, the number of entrances and other metapodates.
Determination of sigh types
To determine which type of ascension should be added to the trimmed transaction at the time of checking the input scripts, we must analyze the values ​​of the deception of the circumcision. Here are some steps to follow:
- Check the first 2 bytes : the first two bytes of trimmed transactions (version and entrance number) contain a unique identifier for the type of transaction.
- Compare with the known remedies of the sigh : Compare the first two bytes of pruning transactions with the known SIGHASH values ​​for different types of scripts (eg, check signature, signature or broadcast).
- Identify the required exalted : based on comparison, identify which type of ascension is required to check the input scripts.
Example Code
Here’s an example of a Python function that takes a trimmed transaction as an input and restores identified type of matches:
`Python
def identity_sighash_type (trimmed_transation):
Check the first 2 bytes (version and entrance number)
Version_and_inputs = int.from_bytes (trimmed_transation [: 2], byteorder = ‘Big’)
Compare with the known reins
If Version_and_inputs == 0x000001:
Check signature
Sighash_type = ‘sighash_1’
Elif Version_and_inputs == 0x00000002:
Entry of the sign
Sighash_type = ‘sighash_2’
else:
Sighash_type = no
Return sighash_type
Example of use
trimmed_transation = b ‘\ x01 \ x02’
Sighash_type = identify_sighash_type (trimmed_transaction)
Print (sighash_type)
exit: sighash_1
`
In this example, the functionidentity_sighash_type` takes a trimmed transaction as an input and checks its first two bytes to determine which type of container is required. Based on comparison with known values ​​(0x00,0001 to check signatures and 0x00000002 for sign intake), restore the identified type of meeting.
Conclusion
Following these steps and using the code specimens, you can determine which type Sighash should be added to the trimmed transaction at the time of checking the input script. This information is crucial for the correct processing of bitcoin transactions and ensuring a safe and effective script intake check.