Unprecedented Incident in $100 Million Coldcard Heist: Attacker’s Wallet Turns Into a Digital Graffiti Wall
The Bitcoin wallet belonging to the Coldcard attacker has turned into a digital graffiti wall filled with messages from victims and opportunists, thanks to the OP_RETURN feature.
The major security breach targeting Coldcard hardware wallet users, with total losses exceeding $100 million, is witnessing a rare form of social interaction on the Bitcoin network. The wallet address `bc1qq85v2c926eg6pgxhwp6q7lf6cnsz80qs3fcu9r`, linked to the attacker by research firms like Galaxy Research and Arkham Intelligence, currently holds approximately $36 million worth of assets. However, what makes this wallet truly interesting are the messages added to small transfers sent to it, which are permanently etched into the blockchain.
This situation is occurring thanks to a technical feature of the Bitcoin network called OP_RETURN, which allows short text to be added to transactions. Normally used for document stamping or technical proofs, this function evolves into a communication channel during moments of crisis. While a similar situation occurred during the 2020 LuBian mining pool theft, the scale of messages in the Coldcard incident and their diversification—resembling graffiti on a street wall—is particularly striking.
Victim Pleas and Offers in Blockchain Records
Among the messages sent to the wallet are heartbreaking pleas like “You stole it, please return some” or “Refund 80% of my 5 Bitcoin (BTC) holdings.” However, this digital wall doesn’t just belong to victims; some users are making job offers to the attacker via Telegram addresses, saying “I can handle BTC laundering, verification, and cashing out for a 10% commission.” Even people unrelated to the hack are asking for a share, saying “1 BTC for my Bitcoin journey.”
The immutable nature of the blockchain keeps these messages recorded forever, proving how a technical infrastructure can transform into an extraordinary social platform. This wide spectrum, ranging from abstract poems to money laundering offers, once again demonstrates the chaotic and transparent nature of the cryptocurrency world. While it remains unknown whether the attacker will respond to these messages, the Bitcoin ledger continues to hold the social memory of this tragic event.