Starknet is pioneering the integration of Ethereum and Bitcoin, enabling direct interactions between assets on both networks and creating new composability opportunities.

As the first Layer-2 solution to facilitate settlement on both Ethereum and Bitcoin, Starknet enhances cross-chain infrastructure and scalability.

Research at Starknet includes developing a bridge framework that allows Bitcoin to determine withdrawal conditions based on offchain activity, utilizing covenants for enforcement.

The ZK-Rollup model employed by Starknet allows for offchain transaction execution with succinct validity proofs verified on Ethereum, significantly reducing gas costs while ensuring correctness.

STARKs, used by Starknet, are more scalable and quantum-resistant than SNARKs, capable of condensing millions of transactions into succinct proofs for on-chain verification.

Native account abstraction in Starknet transforms user accounts into smart contracts, enabling features such as passwordless authentication and customizable transaction logic.

Operating as a permissionless, general-purpose Layer-2 solution, Starknet employs zero-knowledge proofs to enhance security and performance, diverging from traditional EVM-based architectures.

The proposed OP_CAT upgrade aims to allow for more complex Bitcoin scripts, which would enable conditional spending of coins and reinforce the trustless nature of Starknet's bridges.

Starknet's architecture seeks to overcome Bitcoin's limitations, including low throughput and lack of expressiveness, by serving as Bitcoin's execution layer and facilitating offchain computations.

Starknet plans a phased approach for bridging Bitcoin, beginning with federated bridges and progressing to BitVM and future covenant designs that enhance programmability while respecting Bitcoin's principles.

Utilizing STARK proofs and the Cairo Virtual Machine, Starknet delivers high-throughput, low-cost computation with built-in quantum resistance, having successfully scaled Ethereum since its launch in late 2021.

Starknet's overarching strategy aims to redefine blockchain interoperability, creating a secure execution environment that bridges major blockchain networks while aligning with their core principles.