EthStorage

EthStorage, a Layer 2 solution for programmable dynamic storage, launched its mainnet on October 14, 2025, marking a key milestone in Ethereum's modular roadmap by adding a decentralized storage layer alongside computation and consensus layers. In March 2024, the project initiated its public testnet, attracting over 170 nodes that submitted more than 490 storage proofs, demonstrating the viability of community-run storage networks. The testnet campaigns, which ran through mid-2024, showcased decentralized frontends and backends for dApps, proving the practicality of permanent web deployment. A significant technical milestone was the completion of a public trusted setup ceremony in August 2025, involving 287 contributors worldwide, which secured the zk-SNARK circuits underpinning the protocol's proof system. Additionally, in December 2024, EthStorage completed a comprehensive security audit by Salus, reinforcing the robustness of its infrastructure. These developments collectively establish EthStorage as a foundational component for long-term data availability, enabling cost-effective permanent storage at approximately 0.1% of Ethereum L1 costs, and supporting advanced use cases such as fully on-chain AI agents.