EIP-6963: Multi Injected Provider Discovery

[frozeman]

Why not using a standardised window postMessage call, which any extension can answer if it wants:

EIP-5749: The 'window.evmproviders' object

After thinking about it I prefer a window.postMessage() protocol with: initial handshake request answered by all extensions that support the requested chains (CAIP25 + extension name, id?, icon, session ID) every request following a standardised request body + session id (or just extension id??) → only the extension that have the right session id should answer. maybe something like this Request { type: "web3Request", // differentiate from other protocols that use window.postMessage ver…