- The primary threat quantum computers pose to Bitcoin is social, not technical, revolving around community agreement on solutions.
- Roughly 1.7 million BTC, worth about $68 billion, are considered vulnerable in early “P2PK” addresses, including Satoshi Nakamoto’s stash.
- The community’s three main options are burning the vulnerable coins, limiting their spending rate, or taking no action.
- Other blockchains like Solana, XRP Ledger, and Ethereum have already begun experimenting with or planning post-quantum cryptography.
The challenge of securing Bitcoin from future quantum computers could hinge more on community consensus than code, according to Grayscale’s head of research Zach Pandl. This social problem emerged after a recent research note suggested the technical risk to Bitcoin is lower than for other cryptocurrencies.
Consequently, the urgent debate centers on how to handle approximately 1.7 million BTC locked in old, vulnerable addresses. Pandl outlined three conceptually doable paths: burning the coins, slowing their release, or doing nothing.
However, reaching a decision is the true hurdle, as the community has a history of contentious debates. Pandl cited last year’s dispute over Bitcoin Ordinals, which inscribed images and text into the blockchain.
Meanwhile, other major protocols are not waiting. Both the XRP Ledger and Solana are experimenting with post-quantum solutions, and the Ethereum Foundation released its roadmap in February. Pandl stressed there is “no security threat to public blockchains from quantum computers today.”
Nevertheless, he cautioned it is time to accelerate preparations for a post-quantum future. The industry must begin adopting new cryptographic standards to safeguard digital assets long-term.
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