Google has announced research findings suggesting that hacking Bitcoin with quantum computers could be much easier than previously thought. This is an example that shows how serious the quantum threat, long discussed in the cryptocurrency community, actually is.

Interestingly, this research partially relates to Bitcoin's Taproot upgrade. Taproot is a technology introduced to improve privacy and efficiency, but it could also be a weakness in terms of resistance to quantum computer attacks.

Currently, most of the Bitcoin network uses ECDSA encryption, and the academic consensus is that sufficiently powerful quantum computers could break this encryption. With the implementation of Taproot, some address formats have changed, which could pose vulnerabilities from a quantum resistance perspective.

However, in practical terms, it will still take time for usable quantum computers to emerge. But every time such research is published, the community actively discusses security upgrades after Taproot or the adoption of post-quantum cryptography.

Ultimately, this seems to be a signal that makes us reconsider how robust blockchain technology needs to be in the long term.