How can you get a passport for ES?
Yes. Do it ... Not everywhere accepted BTC when we went in 2023 ... Beautiful beaches (strong seas though) .. Beautiful culture ... Will likely try to get property / second passport there this year. But check https://btcmap.org/ for merchants near you on a bitcoin standard!
Discussion
Probably after residency application.
Buy land.
Yeah ... they were doing 3BTC for residency a while ago ... think they have a government scheme for tech workers to get a passport ... but as suggested, investing enough in a tech company (or own) or land i think secures it. Added bonus I think I saw was that there's no income tax on tech work, which I view as clever luring of "sovereign individuals" by a nation state ...
You can always do a short visit on a small tourist visa fee, which is well worth it!