The debate about the threat of quantum computers to Bitcoin is heating up once again. I read the report published by CoinShares, and the conclusion is surprisingly simple. Quantum risk definitely exists, but in reality, it seems to be a distant concern.

Summarizing the key points of the report, theoretically, a sufficiently powerful quantum computer could use Shor's algorithm to derive private keys from Bitcoin's public keys. However, this would require hundreds of thousands of error-corrected qubits, which is still far from current technology. According to CoinShares' Christopher Bendiksen, breaking secp256k1 would require more than 100k times the current number of logical qubits, and related technology is at least ten years away.

An interesting aspect is the analysis of how much of the actual Bitcoin holdings are exposed to quantum threats. About 1.6 million BTC (roughly 8% of the total supply) are in legacy pay-to-public-key (P2PK) addresses, but realistically, only around 10,200 BTC are vulnerable. This accounts for less than 0.1% of all Bitcoin. The remaining 1.6 million BTC are spread across tens of thousands of addresses, and Bendiksen points out that even with significant advances in quantum technology, unlocking these would take thousands of years.

Modern address types like pay-to-public-key-hash (P2PKH) and pay-to-script-hash (P2SH) do not reveal the public key until the coin is spent, further limiting the attack surface. In other words, while quantum computers pose a real threat, Bitcoin's security design is somewhat resilient to it.

However, market reactions are complex. Some institutional investors are not ignoring quantum risks and are beginning to adjust their Bitcoin holdings. Jefferies strategist Christopher Wood mentioned reducing Bitcoin exposure by 10% in their model portfolio and reallocating to gold and mining stocks. Instead of dismissing quantum threats as a distant concern, they are starting to incorporate them into their actual portfolio strategies.

Meanwhile, projects like Coinbase, Ethereum, and Optimism are already working on quantum security measures. Charles Edwards of Capriole Investments suggests that Bitcoin's price might need to fall further, and market pressure could accelerate discussions around quantum security.

In conclusion, quantum computers are a real threat to Bitcoin, but there is ample time before that threat materializes. What’s more important is how market participants evaluate and respond to this risk. Adapting to quantum threats will be a long-term process, but it’s definitely worth starting preparations now.