Questions tagged [checksum]
The checksum tag has no usage guidance.
5
questions with no upvoted or accepted answers
3
votes
0
answers
47
views
What is the advantage of using truncated HASH256 over CRC32?
Some of the checksums in Bitcoin are the first 4 bytes of the HASH256 of the data. HASH256 is just double SHA256, so SHA256(SHA256(data)). What is the advantage of that over using a dedicated checksum ...
- 131
2
votes
1
answer
473
views
Is the checksum used in BIP39 mnemonic sentences too short?
In the BIP39 specification, you add 1 bit of checksum for every 32 bits of entropy you generate.
Therefore, with a common entropy size of 128 bits, you are only adding 4 bits of checksum. This means ...
- 3,063
1
vote
1
answer
2k
views
How to properly compute the BIP39 checksum bytes?
I'm trying to understand the logic of generating a valid BIP-39 seed phrase. I have read the BIP-39 and trying to implement the section Generating the mnemonic step by step. I have the following ...
- 1,445
0
votes
0
answers
187
views
download bitcoin core safely: wrong checksum
I've downloaded the "classic" linux bitcoin core 0.19.1 (tgz) on https://bitcoincore.org/en/download/
In the SHA file that's on the website this is the key:
...
- 163
-2
votes
1
answer
155
views
How to calculate checksum of Address using Python
Lower Bit Range: 245
Upper Bit Range: 256
The Checksum of address 1H5aq8vssj9fCKdw2mYEn8enzpUMEBsUZ7 is 9ed6e860.
I tried the following but got incorrect result 69e65f22
import hashlib
...
