Aptos vs Stellar

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.

Stellar is a payments‑focused blockchain that uses the Stellar Consensus Protocol (SCP), a federated Byzantine agreement where each node chooses its own quorum slices. Anchors issue fiat‑backed tokens, and Stellar’s built‑in DEX offers path payments that can hop through multiple assets in a single transaction. The 2023 Soroban upgrade added WebAssembly smart contracts, enabling on‑chain AMMs, lending and other DeFi primitives.