Adds WBTC on Base

[lyoungblood]

Description

Adds WBTC Optimism Mintable ERC20With Decimals contract for Base.

Additional context

• Optimism Mintable ERC20With Decimals contract was deployed from the Base factory contract in this transaction: https://basescan.org/tx/0xf743f6eae5552a971fb87b0ac6e9fb35e67c9670624d208cb9e365623cbfadf5
• Ethereum mainnet/L1 token matches WBTC token contract located here: https://etherscan.io/token/0x2260fac5e5542a773aa44fbcfedf7c193bc2c599
• 8 decimals were specified to match the 8 decimals of the token on Ethereum mainnet/L1
• Token description matches Ethereum mainnet/L1
• Token symbol matches Ethereum mainnet/L1

[wbnns]

@lyoungblood

Thanks for this PR! Confirming this is actively being reviewed.

[AlexBHarley]

Don't think this should be merged.

Per the WBTC website, this is the contract address for WBTC on Base.

Furthermore, they just chose Layer Zero as their interop provider, with OFTs already deployed on Avalanche and BSC. I expect the same to happen on Base soon.

[lyoungblood]

Don't think this should be merged.

Per the WBTC website, this is the contract address for WBTC on Base.

Furthermore, they just chose Layer Zero as their interop provider, with OFTs already deployed on Avalanche and BSC. I expect the same to happen on Base soon.

I know this native minting contract was deployed last year by BitGo, however, there have been zero minting operations because of the requirement that all mints must go through a merchant in the BitGo ecosystem. Meanwhile, on Optimism, users are able to simply wrap their WBTC from mainnet on the official Optimism bridge.

It is likely to take many more months for the new OFT version of WBTC to allow native minting/bridging from mainnet -> Base. I humbly propose that we simply allow holders of WBTC on mainnet to wrap their WBTC on Base while we wait for this to happen.

Right now, the majority of cbBTC is on Ethereum mainnet, so most of the WBTC <-> cbBTC trading activity will happen on Uniswap and Curve on mainnet. By allowing WBTC holders to wrap their tokens and bridge to Base, my hope is that more liquidity and trading volume can happen on Base, rather than mainnet. It will provide users with a better experience due to lower fees and gas sponsorship through the Base gasless campaign.

[mergify[bot]]

Hey @lyoungblood! This PR has merge conflicts. Please fix them before continuing review.