[BIP-380] Enable wstETH/rETH/cbETH Gauge [Arbitrum]

PR with Payload

https://github.com/BalancerMaxis/multisig-ops/pull/397

Summary:

This pool uses the composable stable pool factory and contains three unique staked ethereum tokens, coinbase eth (cbETH), wrapped staked eth from Lido (wstETH), and rocket eth from Rocket pool (rETH). As most Balancer community members know, rocket pool and lido have become pillars of the ecosystem through the use of the metastable / composable stable pool types to leverage their yield bearing assets. Staked coinbase eth has been prevalent on mainnet as a supporting role for LSDs and will be joining these two juggernauts to facilitate trading and LPing amongst these diverse staking strategies of ETH. This gauge would enter as a “core pool” under BIP-19, meaning protocol fees earned by this pool would be used to bribe for votes on it.

References/Useful links:

(cbETH) Link to:

• Website
• Documentation
• Github Page
• Communities

(wstETH) Link to: • Website • Documentation • Github Page • Communities

(rETH) Link to: • Website • Documentation • Github Page • Communities

Protocol Description:

cbETH is a Coinbase's staked wrapped ETH token, wstETH is a wrapped staked ETH token for Lido, and rETH is the staked ETH token for Rocket Pool.

Motivation:

Balancer is clearly pushing forward on all networks with staked assets as a key focus. By diversifying the protocols which supply staked assets Balancer opens up the door to liquidity providers to gain exposure to multiple providers, while facilitating trade routes for these assets. The protocol benefits greatly from yield bearing assets, and Balancer’s users do just as much. This pool will be a unique and diverse group of Ethereum assets making it exciting for everyone involved.

Specifications:

1. Governance: Find more information about governance on each projects forum. cbETH whitepaper, wstETH., rETH
2. Oracles: See each rate provider contract linked here respectively cbeth, wstETH , rETH
3. Audits: See cbETH , wstETH, rETH.
4. Centralization vectors: Rocket Pool is a protocol for decentralized and trustless ETH2 staking. For Lido and wstETH please read here . Lastly cbETH is from Coinbase and therefore inherently has centralization risks, read the custodial risk section of the whitepaper here
5. Market History: See rETH , wstETH , and cbETH
6. Value: Balancer will earn the protocol fee on all assets in the pool and so will LPs. The BIP-19 flywheel will incentivize TVL to grow here with trading volume and our staked ethereum pillars will continue to have Balancer as their ideal liquidity destination.

Link to pool: 0x4a2F6Ae7F3e5D715689530873ec35593Dc28951B Link to gauge: 0x56c0626E6E3931af90EbB679A321225180d4b32B

Specification:

The Balancer Maxi LM Multisig eth:0xc38c5f97B34E175FFd35407fc91a937300E33860 will interact with the GaugeAdderv4 at 0x5DbAd78818D4c8958EfF2d5b95b28385A22113Cd and call the addGauge function with the following arguments:

gauge(address): 0x2Cb5EB92314bf3BFE7977e059A72A806d353fd21

gaugeType(string): Arbitrum