so our initial guess that this is NOT a puzzle but instead a brute force attempt was correct.
and now that the "solution" is released we can be sure that it was impossible to brute force this because the number of cases to check is gigantic and we did not have enough clues specially since we were supposed to use different charsets for the Base-58 decoding and also skip the 3 strings (ETH, BTC, XRP) that were inside that picture and the previous clues suggested they were used!

conclusion: the same as i said day one, this was an advertisement.