Roles

The current version of the system includes three permissionless and one permissioned role.

Purchaser

Any externally owned account (EOA) or smart contract account may request gas by creating a Gas order. Such users are called gas purchasers.

Executor

Any externally owned account (EOA) or smart contract account may accept the conditions of any order previously created by Purchasers. These users are called Executors. To accept the order, some tokens should be locked as security.

Liquidator

If a gas purchaser requests the execution of a transaction and the transaction is not executed during the Transaction.executionWindow, any user may execute the transaction instead of the Executor and receive a share of the security locked by the Executor as a reward. This procedure is called liquidation, and the party executing such a transaction is called a Liquidator.

Validator

To fulfill the liquidation, the Liquidator must pass a set of signatures from authorized parties that validate the legitimacy of the liquidation. This role was introduced due to gas optimization issues on the Ethereum mainnet and might become deprecated later.