Core Protocolslot
Slot
A time window during which a designated leader validator can produce a block. Each slot lasts approximately 400 milliseconds. Slots are numbered sequentially from genesis and grouped into epochs of 432,000 slots (~2-3 days). Not every slot produces a block—a skipped slot means the leader was offline or too slow.
Related terms
3Core 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
Epoch
A period of 432,000 slots (approximately 2-3 days) that defines a staking cycle. At each epoch boundary, the leader sche...
Core Protocol
Leader Schedule
A deterministic mapping of slots to validators for an entire epoch, computed from stake weights. Validators with more st...