1/ Everyone knows about EIPs, ERCs, and BIPs, but what are CAIPs, and why are they more important than ever going forward?

Side note: You're probably using features powered by CAIPs every day, but you don't know it 😉

Web Team Lead & Research Team Lead @reown

3/ Let's start with the most basic functionality most dapps offer now: connection and authentication for users.

In order to do that for Ethereum, I would need to get accounts and then request a SIWE signature and implement support for this both wallet-side and dapp-side.

4/ I'm done with Ethereum, but what about Solana?

Both the dapp and the wallet would have to implement the Solana equivalent of account connection (similar to eth_requestAccounts) and SIWE (SIWS).

And then the same for Bitcoin, Polkadot, and whatever comes next.

5/ In order to avoid re-implementing the same functionality across different chains, there's a Chain Agnostic Improvement Proposal, which creates a single, chain-agnostic specification that should work with every chain.

6/ A few examples:
- To perform the handshake and disclose the account: CAIP-25
- To perform authentication in a chain-agnostic way, we have SIWx: CAIP-122
- Connection + Authentication: CAIP-222

All of these rely on a chain-agnostic way to specify the user account (CAIP-10) and chain definition (CAIP-2).

7/ If a wallet implements CAIP-25, it can perform the same handshake and account discovery for Ethereum, Bitcoin, Solana, Polkadot, and any other chain!

The same goes for SIWx. Instead of implementing SIWE, SIWS, SIWB, etc, you implement just one method that abstracts all of them.

8/ CAIPs bring interoperability to wallets and dapps, simplifying development and improving UX across all chains.

Also, if you've been using WalletConnect protocol to connect to your favorite dapp, you've already been using them under the hood.

Lets build more with CAIPs! 💪

2/ Anyone can suggest improvements to Ethereum with Ethereum Improvement Proposals (EIPs). The same goes for other ecosystems and their own equivalent proposals.

The issue (or a good thing?) is that most wallets now are cross-chain wallets. They don't support only EVM networks.

Beyond wallets, we're also seeing that a bunch of dapps offer cross-chain support.

This is a fantastic thread! One thing I’ve noticed is that some of them do lack context on how to define the information for a chain. E.g, exploring SIP-44 which from my understanding comes from CAIP has been really confusing as to how the values are determined.