Aptos vs Starknet

Aptos is a Layer‑1 written in Rust that uses the Move language and AptosBFT v4—a Diem‑derived HotStuff variant—to finalise blocks in less than 1 second. Its Block‑STM executor runs transactions in parallel and abort‑reexecutes on conflict, achieving > 100k TPS in public benchmarks. The 2024 ‘Quorum Store’ upgrade optimised mempool sharding and reduced latency under network partition.

Starknet is a STARK‑based validity rollup where smart contracts are written in Cairo and executed off‑chain, with succinct proofs verified on Ethereum. The 2024 Madara sequencer supports parallel execution, and the ‘Quantum Leap’ upgrade reduced L1 calldata by 30 %. STRK token launched in February 2025, enabling slot auctions for sequencer decentralization roadmap.