Core Protocolreplay-stage
Replay Stage
The TVU component that replays received blocks by re-executing all transactions against the bank state. Replay stage verifies that transaction results match the leader's claimed results, updates the bank, and generates Tower BFT votes for valid blocks. If a replayed block is invalid, the validator marks that fork as dead.
Related terms
3Core Protocol
TVU (Transaction Validation Unit)
Transaction Validation Unit—the pipeline on non-leader validators that receives shreds, reconstructs blocks, and replays...
Core Protocol
Bank
An in-memory representation of the accounts state at a specific slot. Each slot gets its own Bank that inherits from its...
Core Protocol
Fork
A divergence in the blockchain where two or more blocks are produced for the same slot or different validators build on...