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Results tagged with hash
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user 12034
A hash is the output of a hash function, a function which is a mathematically reproducible but irreversible process that takes in an arbitrary length input and produces a fixed length output. The same input will always result in the same output. Hashing is central to Bitcoin mining as well as the generation of Bitcoin addresses.
1
vote
Accepted
Required number of bits in nonce
No, however, the probability that a satisfactory hash will be found tends to 1 as N approaches infinity. … Being a cryptographic hash, the output of SHA256 is similar to a pseudorandom number generator. …
- 4,427
1
vote
ECDSA Signature and the "z" value
It's the hash of these bytes that is actually signed, which are z1 and z2. …
- 4,427
17
votes
Accepted
What does the mining difficulty number really mean?
I don't know what a hash is either. … If the hash happens to be a small enough number (as defined by the difficulty), the block is valid. …
- 4,427
2
votes
Accepted
How does a proof of work limit of `~uint256(0) >> 20` translate into a difficulty of `1 / 2^...
0x00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff # or 2**236-1
diff = 0xFFFF * 2**208 / target
print(diff) # 0.00024413689970970154
print(1/2**12) # 0.000244140625
I believe the 1 / 2^20 figure you calculated is the probability that each hash …
- 4,427
2
votes
Accepted
Effect of internet connection speed on solo mining
With solo mining, all you need to get from the Internet is the latest block. Since these come once every 2.5 minutes (average) and are at most 250 KB (typically ~10 KB), you should be just fine. You'd …
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