Stellar's Bell Upgrade Goes Live on Testnet Ahead of Mainnet Vote
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Stellar put its Protocol 30 upgrade, Bell, on testnet and set up a mainnet vote after the rollout. The upgrade adds new smart contract features, optional post-quantum signature verification, and software updates for wallets and indexers.
Key claims & sources
What it means
Stellar upgrades its network through validator-run protocol versions that require a supermajority vote before changes reach mainnet, the same process that brought Soroban smart contracts online in 2024. Protocol 30, nicknamed Bell, is the next step in that cycle, adding smart-account tools aimed at enterprises alongside a signature scheme built to resist future quantum attacks. Putting Bell on testnet on November 3 is the standard checkpoint before validators decide whether to activate it network-wide.
Wallet providers and indexers now have to update their software stacks to stay compatible once Bell activates, or risk breaking transaction processing for their users. Enterprises building on Stellar gain smart-account features that weren't previously available, while any developer can begin testing post-quantum signatures without being forced to adopt them, since the verification is optional. Everyday holders see no immediate change until the mainnet vote passes and node operators roll the upgrade into production.
Post-quantum signatures are becoming a checklist item across major blockchains as cryptographers warn that sufficiently powerful quantum computers could eventually break current elliptic-curve cryptography. Making the feature optional, as Stellar has, lets the network claim readiness without forcing a disruptive migration on every wallet and contract today. That is a defensible engineering choice, but it also means the real test, whether users and custodians actually switch over, is deferred rather than resolved.
The next checkpoint is the mainnet vote itself, where Stellar validators must reach the supermajority needed to activate Protocol 30 network-wide. A successful vote pushes Bell's smart-account and quantum-resistant features into production and starts the clock for every wallet and indexer to finish updating. A delay or rejection would leave the post-quantum tooling confined to testnet, and enterprises waiting on the smart-account capabilities would have to wait for a future vote.
Market reaction i
Stellar fell 0.5% in the 4 hours after the first headline, after a flat 2 hours before.
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Has this happened before?
| When | What happened | Figure |
|---|---|---|
| 11 days ago | Curve Finance launches on Stellar in first native deployment outside EVM ecosystem event | 1 actors in common · 4 news media |
| 11 days ago | Stellar launches cross-chain messaging with ethereum through VIA Labs event | 1 actors in common · 2 news media |
| 12 days ago | Pontoro Launches Stellar Private Asset Liquidity Pool event | 1 actors in common · 2 news media |
| 12 days ago | DTCC’s Tokenization Service Goes Live With 34 Securities event | 1 actors in common · 13 news media |
| 12 days ago | Stellar Unveils Fee-Free Network Processing 7 Million Transactions per Second event | 1 actors in common · 4 news media |