What do Wormhole Queries (cross-chain state reads product) offer over an RPC service?

Wormhole Queries provide on-demand, attested, on-chain verifiable RPC results. Each guardian independently executes the specified query and returns the result and their signature. A Proxy (an off-chain process that validates the request and forwards it to the guardians via a gossip network) handles aggregating the results and signatures, giving you a single result (all within one REST call) with a quorum of signatures suitable for on-chain submission, parsing, and verification using one of Wormhole's examples or SDKs.

Credits: @wormhole_labs engineer that is busy shipping.

If you would like to learn more, check out: https://docs.wormhole.com/wormhole/queries/overview or please reach out to me directly.