Largest Bitcoin transactions in history spark quantum security talk

Eight long-dormant Bitcoin wallets from the early days of the network moved a combined 80,000 BTC in early July 2025. Each wallet sent roughly 10,000 BTC to new SegWit addresses, which offer enhanced security against future quantum computing threats.

These transfers mark the most significant single Bitcoin transactions ever recorded, attracting intense speculation across the crypto community.

Shortly after the transfer, around 28,600 BTC were sent to Galaxy Digital, with about 9,000 BTC sold, likely contributing to a 5% price drop from Bitcoin’s recent all-time high of $123,000.

Experts believe the security upgrade was a precaution against quantum computing risks, threatening Bitcoin’s cryptographic foundations in the coming decades. Developers are working on proposals to protect vulnerable wallets and strengthen network security.

Blockchain analysis shows all eight wallets belong to one entity, with some suspecting Roger Ver, aka ‘Bitcoin Jesus,’ because of his early role and recent legal troubles. Around that time, OP_RETURN messages appeared on the blockchain, possibly a spam campaign pressuring the wallet owner to prove control.

While no evidence of hacking has emerged, these events have heightened attention on dormant Bitcoin holdings and quantum security.

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