- Mention the reason for the long validation time is the verification of
transactions. We previously implied it was download time, but some
people have really fast internet.
- Better describe bitcoind cookie authentication and provide an example
to make it even more clear.
- Add a link to bitcoin-s
- Make the long sidebar on collision attacks even longer by descripting
a pre-image attack in addition to the previous descriptions of second
pre-image and collision. That way we don't conflate pre-image and
second pre-image.
- Remove redundant tip box about an oddity in language about compressed
and uncompressed private keys.
- Link to information about vanity address "mining" (brute forcing)