Following the $89 million Coldcard hack, bitcoin investors are shifting assets back to exchanges, reversing previous self-custody trends.
In the aftermath of the $89 million Coldcard hack, small-scale bitcoin investors are increasingly transferring their assets back to exchanges. This behavior sharply contrasts with the trend observed after the FTX collapse in late 2022 when many opted for self-custody solutions.
Security Breach Raises Concerns Over Hardware Wallets
The Coldcard incident, which began on July 30, has sparked significant unease regarding the safety of hardware wallets. This shift in investor behavior is notable as many previously moved their assets off exchanges to self-custody following the FTX failure.
According to Julio Moreno, head of research at CryptoQuant, the daily deposits of bitcoin under 10 BTC surged to 7,300 BTC on July 31, marking the highest levels since February 6. This increase is attributed to users seeking security following the Coldcard breach.
Details of the Coldcard Hack
Coldcard, a bitcoin-specific hardware wallet by Coinkite, is facing a severe security breach linked to a firmware flaw that compromised seed phrase generation on certain devices. The thefts have reportedly led to losses estimated at between 1,000 and 1,300 BTC, translating to approximately $70 to $90 million across over 1,000 wallets. The attackers exploited a vulnerability dating back to March 2021, allowing them to generate predictable seed phrases and derive private keys without needing physical access to the devices.
This incident has prompted industry leaders, including Binance's founder, to reassess the safety of hardware wallets and the self-custody model.
Market Response: Increased Transactions to Exchanges
Recent data illustrates a significant uptick in bitcoin transfers to exchanges, reversing previous withdrawal trends. On July 31, the number of daily active bitcoin addresses surged from 645,000 to nearly one million, driven primarily by transfers to exchanges. Moreno noted that small transactions were particularly indicative of this trend, with 39,600 BTC transferred in amounts less than 1 BTC, closely approaching the volume seen the day after the FTX bankruptcy.
Blockchain analyst Timechainindex reported total net inflows to exchanges of 11,163 BTC on July 31, predominantly to major platforms such as Binance and Kraken. Analysts describe this influx as a reaction from users seeking safety in the wake of the Coldcard hack.
Comparing Current Concerns with FTX Fallout
The current situation differs notably from the aftermath of the FTX collapse, where fears centered on exchange solvency and potential withdrawal freezes. In contrast, the Coldcard incident has highlighted specific risks associated with a particular hardware wallet, leading some investors to temporarily shift smaller amounts of bitcoin back to exchanges.
Importantly, this situation does not reflect a broader failure of self-custody solutions, as most hardware wallets remain unaffected by the Coldcard exploit.
