Deep Dive
1. Protocol 27 "Zipper" Upgrade (8 July 2026)
Overview: This upgrade formally adds authentication delegation to the Stellar network. It lets users securely authorize another account to sign transactions on their behalf, enabling features like social recovery and modular multisig setups without complex workarounds.
The core change is CAP-0071-01, which introduces first-class delegated signers. Previously, delegation required bulky, custom transactions that were expensive and discouraged use. Now, delegated authorizations are bundled into a single entry, shrinking transaction size and cost. A companion change, CAP-0071-02, also closes a security vulnerability by binding Soroban smart contract credentials to a specific account address, preventing cross-account replay attacks.
What this means: This is bullish for XLM because it lays the groundwork for smarter, more user-friendly wallets. Everyday users could soon recover accounts with help from trusted friends or use shared business accounts more easily, all while paying lower fees for these advanced features.
(CoinMarketCap)
2. Protocol 25 "X-Ray" Testnet Launch (9 January 2026)
Overview: This testnet release brings advanced privacy technology to Stellar, specifically zero-knowledge proofs (ZKPs). It allows developers to build applications where transaction details can be kept private while still proving compliance to regulators.
The upgrade adds support for the BN254 cryptographic curve, making it easier to port ZK applications from Ethereum. It also includes Poseidon hashing, which is more efficient for private decentralized apps (dApps). This creates a "configurable privacy" model where disclosure is selective.
What this means: This is bullish for XLM because it directly targets institutional and regulated finance use cases. It could enable private settlements and confidential asset transfers on Stellar, making the network more attractive to banks and large financial institutions that require both privacy and auditability.
(Scopuly)
3. Protocol 23 "Whisk" Mainnet Activation (5 September 2025)
Overview: This was a major scalability upgrade that enabled parallel execution of smart contracts. By allowing multiple transactions to be processed simultaneously, it significantly increased the network's potential throughput and reduced congestion.
Key improvements included moving smart contract state to faster RAM, implementing a module cache to lower costs, and dramatically increasing per-ledger CPU and read capacity. These changes were part of a longer-term roadmap to achieve a theoretical 5,000 transactions per second.
What this means: This was bullish for XLM because it made the network faster and cheaper for everyone. For users, it meant more reliable transactions during high demand and lower costs for complex DeFi and RWA (real-world asset) applications, strengthening Stellar's utility foundation.
(Paul White Gold Eagle)
Conclusion
Stellar's development trajectory is clearly oriented toward enterprise-grade infrastructure, sequentially enhancing scalability, privacy, and account security. Each protocol upgrade builds a more robust foundation for real-world financial applications. With the recent Zipper upgrade live, how will developer adoption of its new delegation features accelerate the next wave of smart wallets on Stellar?