A contiguous set of [entries](terminology.md#entry) on the ledger covered by a [vote](terminology.md#ledger-vote). A [leader](terminology.md#leader) produces at most one block per [slot](terminology.md#slot).
The number of [blocks](terminology.md#block) beneath the current block. The first block after the [genesis block](terminology.md#genesis-block) has height zero.
The wallclock duration between a [leader](terminology.md#leader) creating a [tick entry](terminology.md#tick) and recognizing a supermajority of [ledger votes](terminology.md#ledger-vote) with a ledger interpretation that matches the leader's.
Some number of epochs after stake has been deactivated while it progressively becomes available for withdrawal. During this period, the stake is considered to be "deactivating". More info about: [warmup and cooldown](cluster/stake-delegation-and-rewards.md#stake-warmup-cooldown-withdrawal)
A proof which has the same format as a storage proof, but the sha state is actually from hashing a known ledger value which the storage client can reveal and is also easily verifiable by the network on-chain.
A globally unique identifier that is also a proof that the [entry](terminology.md#entry) was generated after a duration of time, all [transactions](terminology.md#transaction) included in the entry, and all previous entries on the [ledger](terminology.md#ledger). See [Proof of History](terminology.md#proof-of-history).
The result of interpreting all programs on the ledger at a given [tick height](terminology.md#tick-height). It includes at least the set of all [accounts](terminology.md#account) holding nonzero [native tokens](terminology.md#native-tokens).
The smallest unit of a [program](terminology.md#program) that a [client](terminology.md#client) can include in a [transaction](terminology.md#instruction).
A sequence of [fullnode](terminology.md#fullnode) [public keys](terminology.md#public-key). The cluster uses the leader schedule to determine which fullnode is the [leader](terminology.md#leader) at any moment in time.
A [hash](terminology.md#hash) of the [fullnode's state](terminology.md#fullnode-state) at a given [tick height](terminology.md#tick-height). It comprises a validator's affirmation that a [block](terminology.md#block) it has received has been verified, as well as a promise not to vote for a conflicting [block](terminology.md#block) \(i.e. [fork](terminology.md#fork)\) for a specific amount of time, the [lockout](terminology.md#lockout) period.
A type of [client](terminology.md#client) that can verify it's pointing to a valid [cluster](terminology.md#cluster). It performs more ledger verification than a [thin client](terminology.md#thin-client) and less than a [fullnode](terminology.md#fullnode).
The duration of time for which a [fullnode](terminology.md#fullnode) is unable to [vote](terminology.md#ledger-vote) on another [fork](terminology.md#fork).
A weighted [credit](terminology.md#credit) in a rewards regime. In the validator [rewards regime](proposals/staking-rewards.md), the number of points owed to a stake during redemption is the product of the [vote credits](terminology.md#vote-credit) earned and the number of lamports staked.
A stack of proofs, each which proves that some data existed before the proof was created and that a precise duration of time passed before the previous proof. Like a [VDF](terminology.md#verifiable-delay-function), a Proof of History can be verified in less time than it took to produce.
A [block](terminology.md#block) or [slot](terminology.md#slot) that has reached maximum [lockout](terminology.md#lockout) on a validator. The root is the highest block that is an ancestor of all active forks on a validator. All ancestor blocks of a root are also transitively a root. Blocks that are not an ancestor and not a descendant of the root are excluded from consideration for consensus and can be discarded.
A transaction from a validator which is after the timeout period given from the storage proof confirmation and which no successful challenges have been observed which rewards the parties of the storage proofs and confirmations.
A transaction by a validator which indicates the set of real and fake proofs submitted by a storage miner. The transaction would contain a list of proof hash values and a bit which says if this hash is valid or fake.
A synthetic [account](terminology.md#account) provided by the runtime to allow programs to access network state such as current tick height, rewards [points](terminology.md#point) values, etc.
A function that takes a fixed amount of time to execute that produces a proof that it ran, which can then be verified in less time than it took to produce.
Some number of epochs after stake has been delegated while it progressively becomes effective. During this period, the stake is considered to be "activating". More info about: [warmup and cooldown](cluster/stake-delegation-and-rewards.md#stake-warmup-cooldown-withdrawal)
