Quantum Threat Remains Distant; Existing Hardware Only Demonstrates Trivial Computations
Blockstream CEO Adam Back, in a recent Bloomberg interview, gave a clear assessment of quantum computing's threat to Bitcoin's cryptographic security: it is far from imminent. He noted that current quantum research remains largely in the early experimental phase, with existing quantum hardware typically lacking full error correction and having only performed trivial computations—the largest calculation being factoring 21 into 7 times 3. These machines are closer to laboratory prototypes than practical computing systems. While recent academic work has highlighted potential algorithmic improvements, these advances do not yet translate into meaningful hardware capability. As a result, quantum computers capable of threatening Bitcoin's elliptic curve cryptography remain decades away, though exact timelines are uncertain.
Adam Back Named as Satoshi Candidate but Strongly Denied
Earlier the same day, the New York Times identified Adam Back as the most credible candidate for Satoshi Nakamoto based on stylometric analysis of early cypherpunk writings. However, Back and other experts strongly denied the claim, stating there is no hard evidence linking him to Bitcoin's creation. This controversy adds attention to Back's interview but does not affect his technical views.
Bitcoin Should Prepare for Quantum Computing Risks
Despite the long horizon, Back stressed that the Bitcoin ecosystem should begin preparing now. He advocated for a gradual migration path toward quantum-resistant signature schemes, giving users and custodians ample time to update keys and infrastructure without disruption. He noted that Blockstream's research team has been actively working on post-quantum approaches and has already contributed implementations to Liquid, a Bitcoin layer-two network that has historically served as a testing ground for new features. Back also referenced the National Institute of Standards and Technology's approval of post-quantum cryptography standards in late 2024 as a key milestone that could accelerate industry adoption.
Artificial Intelligence Poses No Structural Risk to Bitcoin
Back dismissed concerns that artificial intelligence or artificial general intelligence pose structural risks to Bitcoin, characterizing AI instead as a productivity tool that can assist researchers and engineers rather than compromise cryptographic systems. He advised the industry not to overestimate the threat from AI.
Bitcoin as Digital Gold, Coexisting with Sovereign Monetary Systems
On a broader level, Back described Bitcoin as best understood as "digital gold," coexisting alongside national monetary systems rather than replacing them. He pointed to ongoing sovereign interest in Bitcoin, including debates around national reserves and monetary frameworks in countries such as El Salvador, as evidence of gradual institutional adoption. He also referenced discussions in Switzerland about monetary reform and the historical appeal of gold-backed standards. Back emphasized that Bitcoin's long-term value lies in its role as a decentralized store of value, not in challenging existing financial order.