With the Colibri Client the long-awaited dream of a stateless and trustless Ethereum is finally becoming a reality.

The Corpus Core Colibri Client is a stateless, trustless, ultra-light Ethereum client designed for secure and efficient blockchain verification. It enables users to interact with blockchain networks without relying on centralized RPC providers, reducing censorship risks, data manipulation, and single points of failure.

Unlike traditional full nodes, which require high storage, bandwidth, and computational power, or light clients, which depend on continuous synchronization, Colibri operates statelessly. It does not store blockchain history or require persistent connections. Instead, it retrieves cryptographic proofs, such as Merkle proofs and zk-proofs, to independently verify blockchain state and transactions.

This trustless verification model ensures data integrity, eliminating the need to trust third-party data providers. Colibri supports multi-chain environments, verifying blockchain data across multiple Layer-1 and Layer-2 networks without adding network overhead.

Key Benefits:

• Decentralized & Trustless: No reliance on centralized RPC providers, enhancing security and censorship resistance.
• Minimal Resource Consumption: Optimized for mobile devices, IoT, and embedded systems, ensuring low bandwidth and power usage.
• Efficient & Scalable: Uses zk-proofs and Merkle proofs for fast, verifiable blockchain interactions.
• Multi-Chain Compatibility: Works across different blockchains, enabling seamless decentralized application (dApp) integration.
• Immediate Verification: No synchronization delays, making it ideal for on-demand blockchain queries.

Colibri is not a replacement for RPC providers but a complementary solution that enables users to verify blockchain data independently. It strengthens Web3 security by ensuring all transactions, account states, and smart contract executions are cryptographically proven. By removing trust dependencies, Colibri paves the way for a fully decentralized, secure, and scalable blockchain ecosystem, making blockchain access more efficient, lightweight, and censorship-resistant.

##Timeline After preliminary research there is a

• fully functioning prototype already now.
• A working MVP will be ready at the end of April
• with the productive release" end of second quarter of 2025