| Accredited | A holder the registrar has assessed as an accredited or professional investor. Tokens with requireAccredited accept only such receivers. |
| AEP | Arbitrum Expansion Program: the licence under which Orbit chains that settle to Ethereum share 10% of net gas revenue with the Arbitrum Foundation. |
| AnyTrust | A data-availability mode in which a committee stores the data and only certificates go to Ethereum. |
| AssetHub | The contract for bonded data providers, devices, readings and topics. |
| Authority / governance | The Safe multisig that owns the chain and every application contract. |
| Batch poster | The service that posts sequenced transactions to Ethereum. |
| BoLD | Arbitrum's dispute protocol that allows permissionless validation. |
| Challenge period | The time an assertion can be disputed before withdrawals based on it can execute (45,818 L1 blocks). |
| Delayed inbox | An Ethereum contract through which anyone can force a transaction onto Primcast after 24 h. |
| Eligible supply | Token supply entitled to dividends: total supply minus redemption escrow and minus venues that do not earn dividends. |
| Escrow (redemption) | Units held by the token itself between a redemption request and its execution or cancellation. |
| Force-inclusion | Getting a transaction included through the delayed inbox without the sequencer. |
| Hard cap / soft cap | The maximum raise of an offering, and the minimum raise for it to succeed. |
| IRO | Initial RWA Offering: primary issuance through the Offering contract. |
| Issuer / admin | The wallet that manages a token. It holds the admin powers listed on RWA token. |
| Jurisdiction | A short code (e.g. US, DE, US-NY) the registrar records for a wallet. |
| Keeper | Anyone calling the permissionless periodic functions, such as closing offerings and maturing tokens. |
| Maturity | The time after which a token stops ordinary transfers and continues redemptions. |
| Registrar | An appointed KYC provider that writes identity facts on-chain. |
| Sequencer | The node that orders transactions and produces blocks (every 100 ms). |
| Settlement token | An allowlisted stablecoin (USDC or USDT) used for subscriptions, dividends, redemptions and bonds. |
| System contract | A contract listed in SystemRegistry that may mint and move RWA balances (for example Offering). |
| Topic | An AssetHub data feed whose value is the median of oracle submissions. |
| Venue | A protocol contract (pool, market) that a token admin has approved to hold units without investor checks; its counterparties are still checked. |