Stellar Ramps Up Quantum Readiness With Bell Upgrade — Why This Could Be Ultra-Bullish For XLM Price

Stellar announced on Oct. 20, 2026, goals for its upcoming Bell Protocol upgrade, with testnet activation targeted for Nov. 3, 2026, and mainnet for Nov. 23, 2026. The upgrade is meant to support business-ready smart accounts at scale, begin work on quantum-safe signatures and improve ledger performance. It follows Stellar’s June 2026 Quantum Preparedness Plan, which aims to move the network toward quantum-safe cryptography as quantum computing poses a potential threat to elliptic-curve cryptography used by most blockchains. Under that plan, every account is expected to be able to add a quantum-safe signer through a native protocol upgrade by the end of 2027 without changing its address or transaction history.