Stellar Core has just shipped version 30.0.0, bumping the protocol to 30 and introducing three new CAPs that extend contract functionality, signature verification, and ledger timing precision. The release marks a significant step forward for developers building on Stellar, as it unlocks new ways to address and secure smart contracts.
CAP‑0084 adds Muxed Contract Addresses, allowing contracts to be addressed with a unique identifier that can be mapped to multiple underlying accounts. This simplifies contract management and improves privacy by decoupling the contract’s public key from the specific account that owns it.
CAP‑0087 implements host functions for ML‑DSA signature verification, enabling smart contracts to validate signatures generated by the newer ML‑DSA algorithm. This aligns Stellar with emerging cryptographic standards, broadens the range of signature schemes that can be used in on‑chain logic, and enhances security for contract‑based transactions.
CAP‑0088 brings millisecond‑resolution close times, reducing the granularity of ledger close timestamps from seconds to milliseconds. The change improves transaction ordering accuracy and supports high‑frequency use cases, making the network more suitable for rapid, time‑sensitive applications.
Alongside the protocol upgrades, the release includes a suite of stability fixes—such as hardened TCPPeer tests, a faster CKMS compression timer, and lock‑free metric batching for Soroban. These improvements aim to reduce flakiness in continuous integration, improve memory usage, and streamline the application of state changes across the network, ensuring a smoother experience for both node operators and developers.
Overall, Stellar Core 30.0.0 delivers a more flexible, secure, and precise foundation for the next generation of decentralized applications on the Stellar network.