ZachXBT has raised concerns over MemeCore's claim of receiving official endorsement from Grayscale, demanding evidence to support its approximately $6 billion market cap, which places it among the top 20 tokens. Additionally, ZachXBT questioned why insiders hold over 90% of the token's supply. Furthermore, ZachXBT highlighted potential manipulation of tokens like RAVE on centralized exchanges, noting that RAVE entered the top 15 by market cap within 10 days, only to plummet by 95% within hours. Similar price patterns were observed in projects such as SIREN, MYX, COAI, M, PIPPIN, and RIVER.