Crypto expert Murad Mahmudov believes a new altcoin, SPX6900 (SPX), could be the next big meme coin like Shiba Inu (SHIB) or Dogecoin (DOGE). He encouraged his 700k+ followers to watch SPX closely, saying it has massive growth potential, similar to how SHIB and DOGE exploded in value. Murad sees SPX as a top candidate to deliver life-changing gains, like previous meme coins did.