Stellar’s Bell upgrade targets post-quantum security – Why it matters for XLM

Stellar will mark its initial step into the post-quantum (PQ) era of security via the Bell upgrade scheduled for November. According to Stellar, the upgrade aims to enable smart contracts to have native PQ signatures, calling it one of the “two long-term goals.” It's (Bell upgrade) designed to make smart accounts ready for businesses at scale and start the work on two longer-term goals: quantum-safe signatures and faster ledgers. The upgrade, also known as Protocol 30, will hit Testnet on the 3rd of November. If all goes well, the vote and final upgrade will be pushed to mainnet by the 23rd of November. While this won’t make the whole Stellar stack quantum-secure, it is a commendable part of broader preparations ahead of the 2029 deadline.

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