# Coinbase Warns Quantum Computing Risks Bitcoin Security, Calls for Multi-Year Upgrades

- URL: https://stocks.freetheai.org/news/coinbase-warns-quantum-computing-risks-bitcoin-security-calls-for-multi-year-a0e9d0
- Published: 2026-10-14T10:59:04Z
- Category: crypto; sentiment: neutral; impact: medium
- Symbols: [BITSTAMP:BTCUSD](https://stocks.freetheai.org/symbols/BITSTAMP-BTCUSD)
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Coinbase Global (COIN) issued a warning that quantum computers could eventually break the cryptographic signatures protecting Bitcoin (BTC) wallets. The cryptocurrency exchange urged network developers to start preparing for a transition to quantum-resistant encryption, describing the necessary protocol upgrades as a complex effort that will take years to implement.

A sufficiently powerful quantum computer could derive private keys from public keys exposed on the blockchain, enabling unauthorized access to user funds. Approximately 30% of all Bitcoin currently rests in addresses where public keys are already visible. The risk is especially high for unmovable or abandoned holdings, including roughly 1.1 million Bitcoin attributed to network founder Satoshi Nakamoto, valued at over $91 billion, which cannot be automatically protected by user-initiated wallet migrations.

Coinbase, which secures roughly 5% of circulating Bitcoin as an institutional custodian, is advocating for flexible, phased upgrades such as proposed network improvement BIP-360. Investors and developers will be monitoring community consensus around quantum-resistant standards, as well as potential governance solutions for protecting legacy and inactive Bitcoin wallets.

## Key points

- Coinbase Global (COIN) warned that quantum computers could eventually break Bitcoin (BTC) wallet encryption.
- The exchange urged developers to prepare for a multi-year transition toward quantum-resistant security standards.
- About 30% of Bitcoin supply resides in addresses with visible public keys, leaving them vulnerable to quantum attacks.
- Unmoved holdings, including Satoshi Nakamoto's estimated 1.1 million coins worth over $91 billion, pose distinct protection challenges.
- Coinbase currently holds about 5% of all existing Bitcoin as a custodian for institutional clients.

## Questions and answers

### How does quantum computing threaten Bitcoin?

A powerful quantum computer could break the cryptographic digital signatures protecting Bitcoin wallets. By analysing a visible public key on the blockchain, a quantum machine could calculate the corresponding private key and steal the funds.

### What is Coinbase recommending to protect Bitcoin from quantum risks?

Coinbase recommends that developers begin preparing multi-year network upgrades well in advance. It supports flexible, phased solutions like proposed upgrade BIP-360, which allow funds to be spent using either current or quantum-resistant security keys.

### Why are Satoshi Nakamoto's Bitcoin holdings particularly vulnerable to quantum attacks?

Satoshi Nakamoto's estimated 1.1 million Bitcoin sit in early address types with exposed public keys. Because these coins have never moved and their owner cannot be confirmed, an upgrade requiring active wallet migration cannot automatically protect them.