www.blockchainlegalresource.com/2023/02/proposed-sec-custody-rules-for-crypto-assets/#page=1
www.paulhastings.com/insights/client-alerts/proposed-sec-custody-rule-amendments-could-drive-structural-changes-in-the
Update:
quickreads.ext.katten.com/post/102kbe2/secs-division-of-trading-and-markets-issues-new-faq-guidance-on-broker-dealer-cu#page=1
www.eversheds-sutherland.com/en/global/insights/sec-publishes-broker-dealer-and-transfer-agent-crypto-guidance
www.findknowdo.com/news/04/28/2025/sec-commissioners-open-conversation-crypto-custody