Stellar Network Announces Bell Protocol Update
The network is implementing post-quantum encryption and millisecond timing via the Protocol 30 update.
Updated on Oct. 20, 2026 in Quantum Computing
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The Stellar network has announced the Bell update, officially designated as Protocol 30. This major network upgrade introduces advanced post-quantum encryption and transitions the ledger to millisecond timing.
Why it matters
The upgrade aims to simplify technical integration for large fintech platforms and custodial services. Additionally, these improvements are intended to facilitate the tokenization of real-world assets on the network.
Protocol 30 features three key updates: CAP-84 for smart contract multiplexing, CAP-88 for millisecond clock timing, and CAP-87 for ML-DSA post-quantum signature support.
The players
Stellar Network
Stellar is an open-source, decentralized payment network designed to facilitate low-cost cross-border financial transactions.
The details
The update package includes a mandatory address format change and requires all infrastructure, wallets, and exchanges to update their SDKs to maintain ledger recognition. This transition is expected to support future network growth and organic demand for XLM.
Timeline
Stable infrastructure and SDK versions are being released between October 16 and October 23, 2026.
The final validator vote for the protocol update is scheduled for November 23, 2026.
The Tech Race
The implementation of Protocol 30 aligns with the industry-wide adoption of the NIST Post-Quantum Cryptography standards to secure blockchain ledgers against future quantum computing threats. By integrating ML-DSA signatures, Stellar is moving to replace legacy security models with quantum-resistant alternatives.
Users and exchange platforms must ensure their systems are updated to the new protocol by November 23 to avoid losing access to new ledger blocks. Following the upgrade, developers can expect improved latency through millisecond timing and enhanced security via new signature support.
The takeaway
The Bell update represents a critical shift for the Stellar ecosystem as it prepares for the future of quantum-secure finance. Organizations should prioritize their SDK migration before the November deadline to ensure uninterrupted service.
What happens next
The network will perform a final validator vote on November 23, 2026. Infrastructure providers must update their SDKs by this date to ensure continued access to the network ledger.
Further reading
For more information on the evolving landscape of secure digital infrastructure, visit the Quantum Computing section.
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