A Bitcoin address linked to the Coldcard thief has become a permanent public message board. People have asked him for money, called him names, and even offered their services to the hacker. Traders can use Arkham to inspect OP_RETURN data, track on-chain messages, and monitor stolen funds. Check out the full article below: https://info.arkm.com/research/coldcard-why-are-users-sending-on-chain-messages-to-the-hackers-address(Arkham)