Questions tagged [checksum]
The checksum tag has no usage guidance.
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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 ...
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Why checksum the privkey in WIF?
Why does the WIF conversion process mandate the double-hash-and-append on the 80+privkey / 80+privkey+01 string, given that nobody is questioning the correctness of that privkey number?
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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
...
3
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2
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How do blockchain explorers know if the address is really generated?
I am studying how the Bitcoin addresses generation works.
As far as I learned, a Bitcoin address appears in the blockchain only after it has been involved in its first transaction. If an address has ...
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Are BIP39 checksum collisions a thing? [duplicate]
My understanding is that 12th word is a checksum… so why are following mnemonics both valid?
gather video album produce report surge grant buzz buzz jaguar modify occur
gather video album produce ...
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How much can be stripped of a base58 address in a recoverable way?
Since P2PKH and P2SH addresses use Base58Check_encoding, the 4 byte checksum appended in binary contains some redundancy. Strictly mathematically speaking, those 4 bytes correspond to ca. floor(log(2^...
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Stumped on finding checksum for 12 word Bip39 mnemonic
I read Pseudo code to find Bip39 checksum? and followed the steps outlined by the answer and arrived at the correct checksum.
But when I went to try it on a 128 bit entropy that were all 1s: ...
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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 ...
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Compute checksum for Bech32 address
The Bitcoin Wiki page for Bech32 addresses explains how one can create a bech32 address from a public key. In step 6 it says-
Compute the checksum by using the data from step 5 and the H.R.P (bc for ...
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checksum = SHA256(SHA256(prefix+data)) - why double hashing?
From 'Mastering bitcoin' -
checksum = SHA256(SHA256(prefix+data))
The 'data' is, for example, an address, which was calculated using SHA256 and then RIPEMD160.
Why do we need double hashing when ...
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`getdescriptorinfo` for private key
Public key:
bitcoin-cli getdescriptorinfo "wpkh(027fda10f37e6c637a1cfeba2cbada86de36f28e63d4ded9e1314117739f6419a9)"
{
"descriptor": "wpkh(...
user103136
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279
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How do I obtain a checksum for a Taproot descriptor so that I can import it using importmulti?
I tried to import an example Taproot descriptor using bitcoin-cli importmulti
tr(c6047f9441ed7d6d3045406e95c07cd85c778e4b8cef3ca7abac09b95c709ee5,{pk(...
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Pseudo code to find Bip39 checksum?
I'm trying to find the checksum for a 12-word BIP39.
I can find the first eleven words just fine, but my 12th word is always off by a few positions.
For example, take the 128-bit entropy ...
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377
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What is the probability of different public key hash that produce the same checksum value
checksum = 1st4byte(sha256(sha256(PubKeyHash)))
checksum1 = 1st4byte(sha256(sha256(PubKeyHash1)))
What is the P(checksum == checksum1)? where PubKeyHash != PubKeyHash1
Is it 1/(2^^32)?
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How to manually compute a descriptors checksum?
In the docs it says: The checksum for a descriptor without one can be computed using the getdescriptorinfo RPC.
I would like to build a recovery tool where many descriptors are imported, calling ...
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