When the server was compromised back in 2015, the hacker had access to users registered IP, and last used IP. Therefore, I think it's safe to assume that the registration IP is always kept in the database. However, peoples IPs change so it isn't that big of a deal.
Although, I doubt that any country would forbid one for signing up to a discussion forum about Bitcoin. Barring your activities on the site it isn't likely going to go against you if all you've done is participated in discussion.
Plus, at the moment there hasn't been a database leak since you registered so your IP is currently not public as only admins can see it.
The unit of evil system is transparent:
A: Your IP might be banned because it was used by a user that got perma banned. Don't worry - IP bans decay over time if there's not too many of them during a small period. If you register using a banned IP, are using TOR, VPNs or well known proxies, you will have to pay a small fee. This is to prevent spammers while allowing legitimate members to post without many restrictions.
That's included in mpreps stickied Unofficial list of (official) Bitcointalk.org rules, guidelines, FAQ theymos has also spoken about it before:
Here are some stats:
Evil | % new users |
0 | 53 |
0-1 | 35 |
1-10 | 4.4 |
10-20 | 0.80 |
20-50 | 2.2 |
50-100 | 1.3 |
100+ | 2.9 |
Currently each unit of evil requires a payment of 4023 satoshi. You only need to pay something if you have 1 or more, though.
Meh,since now more and more countries are banning Bitcoin/Cryptocurrency , theymos should atleast give some informations on how bitcointalk deals with these kind of requests if they are ever made by the authorities.