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Stacks Tests Post-Quantum Signatures With sBTC Transfer

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 11/11/2026, 16:12:25 UTC.

Briefings

A mainnet test confirmed that sBTC transfers can utilize Lamport one-time signatures for post-quantum security. The test did not upgrade existing sBTC wallets or the Bitcoin backing the token, meaning current wallets remain vulnerable to quantum attacks. This finding establishes a technical pathway for future upgrades but leaves the broader impact on user security uncertain.

Key points

• sBTC transfers can now use Lamport one-time signatures for post-quantum security in a mainnet test.
• Current sBTC wallets and Bitcoin backing the token remain vulnerable to quantum attacks.

Context

This test demonstrates a technical pathway for post-quantum security in sBTC transfers. It does not upgrade existing wallets or the Bitcoin backing the token, meaning current wallets remain vulnerable to quantum attacks. The finding establishes a technical pathway for future upgrades but leaves the broader impact on user security uncertain.

Limitations

The test covers only mainnet transfers using Lamport one-time signatures. It does not upgrade existing sBTC wallets or the Bitcoin backing the token. The broader impact on user security remains uncertain due to the lack of widespread adoption of this signature type in production wallets.

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