Abstract Expose a lookup function on-chain to check for any subset of function selectors, as well as an id of the codepath for each function. This would enable autonomous discovery of new standards in the wild. Motivation Currently, smart contracts have no easy way to check with high confidence of a token's conformance to a given standard either by specification or implementation. Creating a standard is a lengthy and error prone process despite the hard and valuable effort of ERC editors.

Questions Should claimable shares be reflected in totalSupply? yes if the shares are "participating" Should vaults which return zero for any request ALWAYS return 0 for ALL time? YES Should hooks be forced to revert on rid=0? Where? No Can rid=0 be transferrable? Less restrictive if possible How to handle underlying ERC-4626 methods vs claim methods? Optional but defined for how to use.

Repo: https://github.com/ERC4626-Alliance/WETHPlus WETH+ Is ERC-20, ERC-2612, ERC-4626, ERC-7535: Native ETH ERC-4626, ERC-7550: Transient ERC-20 Approvals, and backward compatible with weth9 It will also have a convenience method withdrawAll(address receiver, address owner) and a payable receive function which wraps deposit(). WETH Upgrade Router The WETH upgrade router allows for conversion from native ETH or WETH9 to WETH+ along with the following patterns: