Core Protocolledger
Ledger
The complete ordered history of all transactions processed by the Solana cluster. The ledger is composed of sequential blocks (one per slot), each containing entries of transactions ordered by PoH. Validators store the ledger locally in Blockstore, and warehouse nodes or Bigtable archives provide long-term historical access.
Related terms
3Core Protocol
Blockstore
A RocksDB-based database that stores raw shreds and block metadata on the validator's disk. Blockstore indexes shreds by...
Core Protocol
Block
A set of entries produced by a leader during a single slot. A block contains transactions bundled into entries, each wit...
Core Protocol
Entry
An ordered unit within a block containing a mix of PoH ticks and transaction batches. Each entry includes a PoH hash, a...