Bitcoin Faces Quantum Computing Threat as 8 Million Coins Risk Theft

A growing concern for Bitcoin's security has emerged with the warning that quantum computers could pose a significant threat in the 2030s. Charles Hoskinson recently highlighted this risk in a video address, emphasizing that the danger is not hypothetical but rather an imminent reality.

The issue stems from the exposure of public keys on-chain, which make up around 34% of all Bitcoin. This means approximately 8 million coins could be vulnerable to quantum theft if left unaddressed. The affected funds are primarily due to address reuse and legacy pay-to-public-key-hash formats that date back to March 1, 2026.

A proposed solution, BIP-361, has been put forward to mitigate this risk. However, Hoskinson argues that the proposal is flawed in its reliance on a hard fork, which would necessitate a significant change to the Bitcoin protocol. Furthermore, he points out that the zero-knowledge proof recovery system included in the proposal only works for wallets built using the BIP-39 seed phrase standard, leaving around 1.7 million coins inaccessible.

Hoskinson acknowledges that the developers behind the proposal understand the gravity of the situation and the potential consequences of inaction. However, he argues that the governance structure required to implement a hard fork is not currently in place for Bitcoin, unlike other blockchains such as Cardano, Polkadot, and Tezos.

A potentially game-changing scenario has been presented by Hoskinson, which highlights the role of institutional investors like BlackRock, MicroStrategy, and government entities. These stakeholders have significant holdings and a vested interest in protecting their assets from potential losses. If 10% of Bitcoin's supply were to face quantum theft in the 2030s, these institutions would likely push for a hard fork, even if it means overriding community objections.