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Blockchain Glossary

Glossary

Aptos

Another Move-based Layer-1 from former Meta / Diem engineers, focused on parallel execution (Block-STM) and a Byzantine-fault-tolerant consensus engine.

Aptos, launched in 2022 by Aptos Labs, shares ancestry with Sui — both descend from Meta's abandoned Diem project — but takes a different design path. Aptos uses Block-STM, an optimistic concurrency control scheme that speculatively runs transactions in parallel and re-runs any that conflict.

Contracts are written in Move with Aptos-specific extensions, and the consensus layer (AptosBFT) is a Byzantine-fault-tolerant protocol that finalizes blocks in well under a second.