Abstract vs eCash

Abstract is a Layer 2 (L2) network built on top of Ethereum, designed to securely power consumer-facing blockchain applications at scale with low fees and fast transaction speeds.

Built on top of the ZK Stack, Abstract is a zero-knowledge (ZK) rollup built to be a more scalable alternative to Ethereum; it achieves this scalability by executing transactions off-chain, batching them together, and verifying batches of transactions on Ethereum using (ZK) proofs.

Abstract is EVM compatible, meaning it looks and feels like Ethereum, but with lower gas fees and higher transaction throughput. Existing smart contracts built for Ethereum will work out of the box on Abstract (with some differences), meaning developers can easily port applications to Abstract with no or minimal changes.

eCash is a blockchain project led by Bitcoin ABC, aiming to enhance L1 scalability, security, transaction speed, and cost-effectiveness. It integrates the Avalanche consensus protocol with its base PoW consensus, making it effectively a hybrid consensus network that is secured against 51% attacks and extensible via subnets and hard-fork free upgrades. These improvements address scalability concerns, enable rapid transaction finality, interoperability, and guarantee subcent fees. Despite these improvements, eCash remains committed to maintaining the decentralization principles of the original Bitcoin protocol. By prioritizing scalability and extensibility, eCash seeks to realize the vision of Bitcoin as a practical and accessible peer-to-peer electronic cash system.