title

not directly, that would be against jsp ToS i believe
however, i was able to without breaking the ToS from these part of the forum:
Steam:
https://forums.d2jsp.org/forum.php?f=279
Battlenet:
https://forums.d2jsp.org/forum.php?f=386

by making the crypto purchase of giftcard from things like bitrefill, coincards or directly within the cakewallet app
that would be to acquire forum golds (onramp)

to offramp those forum golds to crypto, it's more of a hassle tho
you cant make an FT thread but only replying on an existing ISO thread
then sell the giftcard for crypto elsewhere
i am unsure if retoswap has option to sell giftcards but maybe
(crypto for cash by mail/bank transfer is the main use there)