diff --git a/arbitrum-docs/launch-orbit-chain/how-tos/set-up-aep-fee-router.mdx b/arbitrum-docs/launch-orbit-chain/how-tos/set-up-aep-fee-router.mdx index 850dff542..937294cb3 100644 --- a/arbitrum-docs/launch-orbit-chain/how-tos/set-up-aep-fee-router.mdx +++ b/arbitrum-docs/launch-orbit-chain/how-tos/set-up-aep-fee-router.mdx @@ -10,15 +10,17 @@ content_type: how-to ## Quick start -- You can adopt the AEP Fee Router by using the [AEP Router deployment scripts](https://github.com/OffchainLabs/arbitrum-orbit-sdk/tree/main/examples/setup-aep-fee-router) provided in the [Orbit SDK](https://github.com/OffchainLabs/arbitrum-orbit-sdk/tree/main) +You can adopt the AEP Fee Router by using the [AEP Router deployment scripts](https://github.com/OffchainLabs/arbitrum-orbit-sdk/tree/main/examples/setup-aep-fee-router) provided in the [Orbit SDK](https://github.com/OffchainLabs/arbitrum-orbit-sdk/tree/main) + ## The AEP fee router contract system @@ -28,32 +30,28 @@ This section describes the different fee distribution and router contracts that The **AEP fee router** system relies on configuring an escrow contract as the intended reward address for protocol fee components. This intermediary contract is known as the `RewardDistributor.` -The `RewardDistributor` is configured to separate the AEP portion of the fees from fees intended for the chain owner. The `RewardDistributor` can be permissionlessly called to perform a withdrawal which simultaneously transfers 90% of accrued fees to the chain’s fee collector and 10% of accrued fees to a routing contract on the parent chain. From here, the chain owner has complete control over their earned fees, and the routing contracts can direct AEP fees to a collecting address for the Arbitrum DAO. +The `RewardDistributor` is configured to separate the AEP portion of the fees from fees intended for the chain owner. The `RewardDistributor` can be permissionlessly called to perform a withdrawal which simultaneously transfers 90% of accrued fees to the chain’s fee collector and 10% of accrued fees to a target address on the parent chain. From here, the chain owner has complete control over their earned fees, and the routing contracts can direct AEP fees to a collecting address for the Arbitrum DAO. ### ChildToParentRouter AEP fees from the `RewardDistributor` must first be sent to Ethereum before they can be deposited to the DAO-controlled address on Arbitrum One. To facilitate this transfer to Ethereum, AEP fees are sent through a series of contracts known as `ChildToParentRouters.` -The `ChildToParentRouter` is configured to withdraw a single token (immutable and specified at deployment) from the child chain to a specific target address on the parent chain: either another `ChildToParentRouter` or the `ParentToChildRouter` on Ethereum. - -### ParentToChildRouter - -All AEP fees from the network of Orbit chains will arrive at the `ParentToChildRouter` on Ethereum. This contract can send ETH and arbitrary ERC-20 tokens to a DAO-controlled address on Arbitrum One. +The `ChildToParentRouter` is configured to withdraw a single token (immutable and specified at deployment) from the child chain to a specific target address on the parent chain: either another `ChildToParentRouter` or an address controlled by the Arbitrum Foundation on Ethereum. ## Deploying your AEP fee router contracts -An Orbit chain is responsible for deploying all `ChildToParentRouters` necessary for their AEP funds to arrive at the `ParentToChildRouter` on Ethereum. +An Orbit chain is responsible for deploying all `ChildToParentRouters` necessary for their AEP funds to arrive at the address controlled by the Arbitrum Foundation on Ethereum. This includes: - Deploying a `ChildToParentRouter` on their Orbit chain configured for their gas token and configured to send funds to either: - - The `ParentToChildRouter` on Ethereum (assuming the network is a Layer-2) + - An address controlled by the Arbitrum Foundation on Ethereum (assuming the network is a Layer-2) - Another `ChildToParentRouter` configured to the same gas token and configured to send funds to a successive parent chain (this is the case for a Layer-3 network or higher) - Deploying a `RewardDistributor` contract configured to forward 10% of fees to the `ChildToParentRouter` and 90% to the chain owner’s preferred reward-receiving address. -In the event that a `ChildToParentRouter` does not connect to the `ParentToChildRouter` on Ethereum, an Orbit chain must deploy successive `ChildToParentRouter` contracts until a connection to `ParentToChildRouter` is established. +In the event that a `ChildToParentRouter` does not connect to the address controlled by the Arbitrum Foundation on Ethereum, an Orbit chain must deploy successive `ChildToParentRouter` contracts until a connection to such address is established. -And optionally, an Orbit chain can decide to deduct assertion costs by following the instructions in the [Deducting Assertion Costs](/launch-orbit-chain/how-tos/calculate-aep-fees#assertion-costs) section: +Optionally, an Orbit chain can decide to deduct assertion costs by following the instructions in the [Deducting Assertion Costs](/launch-orbit-chain/how-tos/calculate-aep-fees#assertion-costs) section: