Glossary

This glossary defines the key terms used throughout the Raiku Academy. If something feels unclear while reading other pages, start here.

Blockspace

The limited execution capacity available in a blockchain block or slot. Raiku treats blockspace as a scarce, market-priced resource.

A fixed execution window on Solana during which transactions are processed. Each slot has limited capacity.

Execution where transaction inclusion and timing are guaranteed in advance, not determined probabilistically.

A model where fees increase the chance of inclusion but do not guarantee execution.

The part of the system responsible for transaction ordering, scheduling, and inclusion.

The mechanism by which validators agree on state transitions and block order. Raiku does not modify consensus.

An entity responsible for constructing blocks and ordering transactions under predefined rules.

A model where multiple builders compete to construct blocks while honoring execution commitments.

A transaction model designed for immediate execution using sealed-bid auctions.

A transaction model that allows execution to be scheduled in future slots using auctions.

Raiku’s market for pricing, allocating, and guaranteeing execution at the slot level.

Raiku’s execution guarantee that ensures inclusion in a specific slot under agreed economic terms.

Fees used on Solana today to signal transaction importance without guaranteeing inclusion.

Shared coordination accounts used by Raiku to enforce execution ordering and prevent conflicts.

Value extracted by reordering, inserting, or excluding transactions during block construction.

A commitment that a transaction will execute at a specific time or penalties apply.

Racing refers to fee-based competition for inclusion. Scheduling refers to reserving execution with guarantees.