mev-toolkit/MEV_by_chains/MEV_on_Ethereum/account_abstraction

erc-4337: account abstraction

tl; dr

• this change implements censorship-resistant account abstraction without making any changes to the consensus layer of ethereum, by creating a new mempool, a smart contract wallet standard, and a shared entry point contract for managing user operations.
• this enables wallets to have multi-sigs, social recovery, hardware enclaves, etc.
• UserOperations are pseudo-transactions objects that represent a user's intent.
• Bundlers are new actors that are either block builders, or users that can send transactions to block builders through a bundle marketplace. they package up a set of objects into a tx making a call to a special contract and sending objects to a separate mempool.
• the EntryPoint is a smart contract that receives UserOperations from Bundlers.
• Aggregators combines multiple signatures into a single signature, to validate multiple UserOperatons in one step.
• Smart contract account are the target of the UserOperation and will validate and execute the UserOperation.
• Paymaster create flexibility for how gas is paid and by whom.

resources

• erc-4337 is on mainnet
• account abstraction, by safe
• erc-4337 contract deployment
• unpacking erc-4337, by a. chiplunkar
• account abstraction series, by alchemy
• erc-4337 bundler implementation in rust
• erc-4337: account abstraction using alt mempool
• account abstraction gas benchmakrs, by eth-infinitism
• eip-7702: set EOA account code for one transaction