Core Protocolfork
Fork
A divergence in the blockchain where two or more blocks are produced for the same slot or different validators build on different parent blocks. Forks are common during normal operation and are resolved by Tower BFT's fork-choice rule. Only one fork ultimately becomes the canonical chain; transactions on abandoned forks are dropped.
Related terms
3Core Protocol
Tower BFT
Solana's custom BFT consensus algorithm built on top of Proof of History. Tower BFT uses PoH as a clock to reduce commun...
Core Protocol
Slot
A time window during which a designated leader validator can produce a block. Each slot lasts approximately 400 millisec...
Core Protocol
Block
A set of entries produced by a leader during a single slot. A block contains transactions bundled into entries, each wit...