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Will Quantum Attacks Arrive by 2030? - Bitcoin Migration Takes a Decade

According to reports, quantum attacks could arrive before 2030, and migrating Bitcoin to post-quantum security will take ten years. The report warns that over $3 trillion in crypto assets face the risk of being attacked by quantum computers within 4 to 7 years due to elliptic curve cryptography. Meanwhile, the migration process may take more than 5 to 10 years, requiring coordinated efforts among users, exchanges, custodians, and miners. This time gap will pose serious challenges to Bitcoin’s security, market confidence, and governance mechanisms.

1. Security: Approximately 6.9 million BTC Face Direct Risk

Currently, about 6.9 million Bitcoin (roughly one-third of the total supply) are in a “static exposure” state due to public keys being permanently exposed on the blockchain. These assets include:

170,000 BTC in early P2PK addresses (public keys stored in plaintext);

520,000 BTC exposed due to address reuse leading to public key leakage;

110,000 “Genesis coins” held by Satoshi, likely with lost private keys.

Once a computer with 500k physical qubits is developed, attackers could easily crack these private keys without racing against transaction confirmation, directly transferring funds. Based on current prices, this exposure amounts to over $600 billion.

Additionally, dynamic transactions face “mempool hijacking” threats: when users initiate transfers, public keys are exposed, and quantum computers could derive private keys within 9 minutes, enabling them to “snatch” transactions with higher fees, with a success probability of 41%.

2. Market Confidence: Asset Values May Decline Prematurely

Although quantum attacks have not yet occurred, market behavior is already being influenced:

Investment firms like Jefferies have reduced Bitcoin allocations from 10% to 0%, shifting to gold and gold mining stocks, explicitly citing quantum risks as a consideration;

Coinbase CEO Brian Armstrong responded swiftly, pledging to personally push for quantum-resistant upgrades, indicating that industry leaders are in emergency mode;

Funds are shifting toward protocols with greater upgrade resilience, such as StarkNet in the Ethereum ecosystem, which has adopted quantum-resistant hash signatures, creating structural pressure on Bitcoin.

If migration lags, investors may sell off early or move to safer digital assets, leading to decreased Bitcoin liquidity and a downward shift in valuation centers.

3. Governance Dilemmas: Decentralized Upgrades Are Difficult

Bitcoin’s decentralized nature becomes a weakness in crises:

Upgrades require coordination among users, exchanges, wallet providers, and miners; any non-cooperation could lead to forks or compatibility issues;

Changing signature algorithms (e.g., from ECDSA/Schnorr to PQC standards like Dilithium) will increase signature sizes, affecting TPS and block space utilization, sparking performance debates;

While Taproot improves privacy, exposing public keys directly increases the quantum attack surface, highlighting the security trade-offs in protocol evolution.

In contrast, blockchains like Ethereum, which can iterate quickly, have already initiated migrations, further exposing Bitcoin’s governance rigidity in addressing systemic risks.

4. Migration Path: Tight but Feasible Time Window

NIST in the US released post-quantum cryptography standards (ML-KEM, Dilithium, etc.) in 2022, with clear technical pathways. Google has set 2029 as the migration deadline and is collaborating with Coinbase, Stanford, and the Ethereum Foundation to promote the transition.

However, if Bitcoin does not change its block structure, a full network migration could take up to 20 years, far exceeding the threat window. Therefore, phased strategies are necessary:

Prioritize migrating large holders to quantum-resistant addresses;

Introduce compatibility layers or intermediate protocols for gradual upgrades;

Learn from traditional financial systems by establishing “quantum preparedness” disclosure mechanisms to boost institutional confidence.