johndcook.com > blog
Test whether an arbitrarily large integer is a square
6+ day, 13+ hour ago —...largest allowed exponent is 1023 for reasons explained here. [2] Bob Johnson... ...These are illustrated in Python below....
johndcook.com > blog
Legendre PRF and Ethereum 2.0 Proof of Custody
1+ week, 36+ min ago —...The Legendre PRF has not been accepted to be part of Ethereum 2.o... ...PRF of interest to Ethereum?...
johndcook.com > blog
Patching functions together
1+ week, 22+ hour ago —...For example, you want a roller coaster track to be more than just...
johndcook.com > blog
Why use hash puzzles for proof-of-work?
1+ week, 3+ day ago —...Ian Cassels said “Cryptography is a mixture of mathematics and muddle... ...than Bitcoin, on the order of $200,000 compared to Bitcoin’s market...
johndcook.com > blog
Minimize squared relative error
1+ week, 5+ day ago —...Beckenbach. A Class of Mean Value Functions.... ...this expression is the contraharmonic mean of the y‘s [2]. [1] Aristotle...