[Blockstream Informs 'White Hat' Hacker That Vulnerability Has Been Fixed, 4,000 Bitcoins Can Be Safely Returned] According to Bitcoin News, Blockstream has notified the 'white hat' hacker that the vulnerability has been fixed, and 4,000 BTC can now be safely returned. The hacker, who previously extracted approximately 4,000 BTC from the Liquid Network, expressed willingness to return the funds but requested that the vulnerability be fixed first. The entire negotiation process was conducted publicly through Bitcoin OP_RETURN messages. Initially, the hacker proposed returning 'most' of the BTC but later insisted on fixing the vulnerability first: 'Please fix the vulnerability first. The latest submitted code puts the chain at risk. Ensure that every node has been patched, and once we confirm the fix, we will safely return the funds.' The hacker also sent encrypted details of the vulnerability to Blockstream.