Polygon (POL) and Arbitrum (ARB) are experiencing double-digit losses compared to other altcoins.The crypto presale Rollblock (RBLK) has gained significant momentum with a 340% presale jump in 2024.Rollblock's GambleFi protocol attracts users with advanced AI betting strategies and transparent on-chain analytics.Rollblock offers potential high returns with a weekly dividend for investors and has been touted as a new crypto gem.