Midday Key Developments on April 15

7:00-12:00 Keywords: Anthropic, a certain exchange, Farcaster1. Anthropic's valuation reaches 800 billion USD;2. Polygon launches native liquid staking token sPOL;3. US journalist: Trump states he is not considering extending the ceasefire;4. A certain exchange secretly files for US IPO, valuation falls to 13.3 billion USD;5. US SEC cancels "pattern day trader" rule, removes minimum balance requirement;6. Ripple and Korea Kyobo Life launch tokenized government bond blockchain settlement pilot;7. Farcaster clarifies it will not issue a token, the related “token discussion” is actually a forked project called Hypersnap;8. Virginia Governor signs Bill HB 798, officially becoming law and including digital assets under its jurisdiction.