Glossary

This glossary collects the terms that appear repeatedly across the Zink docs.

Core network terms

Agave

The validator client lineage Zink tracks operationally. Many operator commands and binaries still use Agave / Solana naming.

SVM

The Solana Virtual Machine. Zink runs the same account, transaction, and execution model used across SVM networks.

Validator

A node that participates in consensus and votes on-chain.

RPC node

A non-voting node focused on serving JSON-RPC and WebSocket traffic.

Vote account

The on-chain account that records validator voting activity and receives delegated stake.

Identity key

The validator's live network identity keypair.

Authorized withdrawer

The sensitive authority allowed to withdraw from a vote account.

Program-development terms

Program ID

The public address of a deployed program.

ProgramData account

The account that stores upgradeable program data under the upgradeable loader model.

PDA

Program Derived Address — a deterministic off-curve address derived from seeds plus a program ID.

CPI

Cross-Program Invocation — one program calling another program during execution.

ATA

Associated Token Account — the canonical token account for a wallet/mint pair.

Token-2022

The token program variant that adds extensible token features beyond the original SPL Token program.

Compute units

The runtime budget consumed by instruction execution.

Prioritization fee

The fee paid to raise transaction priority, typically by setting compute-unit price and limit.

Bridge terms

Bridge

The per-chain-pair bridge configuration account holding authorities, token pairs, fee settings, and threshold data.

DepositTracker

The source-side tracker that records deposit entries and source-side finalization state.

WithdrawTracker

The destination-side tracker that records withdraw entries and destination-side voting/finalization state.

AuthProposal

The governance/configuration account used for bridge changes such as token-pair updates.

deposit

The instruction that creates a source-side bridge deposit entry.

ack_deposit

The authority instruction that relays observed source deposits to the destination-side withdraw tracker.

withdraw

The permissionless instruction that executes a finalized confirmed withdrawal on the destination chain.

ack_withdraw

The authority instruction that relays the destination-side result back to the source-side deposit tracker.

cleanup_deposit

The permissionless instruction that finalizes source-side refunds and cleanup after deposit finalization.

DepositResult

The computed outcome of a bridged transfer, such as confirmed or rejected.