RFC Interchain Staking Light Paper

[okwme]

Summary

Create a RFC for Cross Chain Validation to track discussion that should result in an eventual ADR

Problem Definition

Proposal

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For Admin Use

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[nylira]

I think this should be renamed Interchain Staking, at least for marketing purposes. Interchain is a very strong brand that Cosmos current owns. Cross-chain is super generic. And we also want to let ATOM stakers understand that this is a feature not just for validators, but for validators and delegators combined (i.e., stakers).