According to Wu, Robin Linus, author of the BitVM white paper, recently stated that he was asked about the investment round of Bitcoin L2 Citrea. He thought Citrea looked suspicious and its marketing was full of exaggerations and misleading statements. Citrea claims to be a Bitcoin zk-Rollup and received a $2.7 million seed round of financing led by Galaxy Ventures in February this year, with participation from Delphi Ventures and others.