After about 1,082 bitcoin were leaked due to a vulnerability in Coldcard hardware wallets, bitcoin-holding company Strive presented institutional custody as an alternative for large holders.

Burnett assessed it as "possibly one of the worst weeks in the history of Bitcoin" over the past week, Cryptopolitan, a blockchain media outlet, reported on Aug. 1 (local time).

The incident drew attention because it stemmed from a vulnerability in the storage structure itself, not user carelessness. Attackers exploited weak randomness in the seed-generation process to steal funds, and the damage was estimated at about $70 million. The vulnerability was identified in Coldcard version 4.0.0. That version was released based on a code commit dated March 1, 2021, and developer CoinKite later fixed the issue in version 4.2.1.

Burnett pointed out that victims lost assets despite following recommended procedures such as buying genuine devices and generating seeds offline. Based on this, Burnett argued that self-custody relying on a single point of failure is not sufficiently safe and can collapse through multiple paths. Burnett said design and operating structures are a more fundamental issue than simple user mistakes.

The incident also spread into a debate over self-custody and distributed storage. Changpeng Zhao (CZ), founder of Binance, recommended splitting assets across multiple wallets, saying "nothing is 100 percent safe." He said concentrating assets in a single hardware wallet is not an absolute solution.

Market reaction appeared first in investor sentiment rather than price. Bitcoin hovered around $63,000 last weekend without major swings, but on-chain analytics firm Santiment tallied bitcoin-related social media sentiment at the most negative level in history. The reading was interpreted as reflecting concerns that directly managing private keys can also fail.

Institutional custody proposed by Strive is also not a complete solution. Entrusting assets to an institution reduces the burden of managing private keys, but it requires reliance on the custodian's operating system, internal controls and hacking response capabilities. The custody risk does not disappear, but shifts from managing personal devices and seeds to managing a custodian institution's systems.

For large holders, a strategy combining multiple storage methods rather than insisting on one approach is being discussed as a realistic alternative. Dispersing assets across multiple wallets and custodians and applying multisignature and withdrawal approval procedures can reduce the risk that all assets are exposed at once if a specific device or seed is breached.

The debate shows that bitcoin storage is not a simple matter of choosing either self-custody or institutional custody. The appropriate storage structure can vary depending on holding size, trading frequency and internal management capabilities, and it has been pointed out that the larger the assets, the more important it is to ensure both technical safety and operational control. An analysis has emerged that such custody systems could also affect trust in the bitcoin market and inflows of institutional funds in the future.

This was possibly one of the worst weeks in the history of Bitcoin. Many people believed they had done virtually everything right. They bought a respected hardware wallet, generated their seed offline, followed established best practices, and still lost significant amounts of…