Farcaster Devs

How to verify a message from Hub on client side?

I see the `dataBytes` generated from the protobufs [pic1] but it always returns nothing [pic2].

Should I JSON stringify the message data? It can contain bigints so that wouldn't be serializable.

What then?

23. Co-founder of @beliefs (beliefs.social). Collaborator at /frogfm.

You can technically verify the message signature but you have to contact a hub to check if the signer of the message is valid

How to validate messages

https://github.com/farcasterxyz/hub-monorepo/blob/main/apps/hubble/src/storage/jobs/validateOrRevokeMessagesJob.ts


Message utilities

Developer 🤓 build, develop and operate Farcaster solutions @ dtech.vision also love tech, decentralization, fitness and oldschool rap 😎

Tbh didn’t figure it out. Too much code, can you pinpoint to exactly where verification happens?

It all would make sense if dataBytes weren’t null - I wonder how I need to transform the data to correctly verify it.

@horsefacts.eth maybe you can help with this?

How to validate messages

https://github.com/farcasterxyz/hub-monorepo/blob/main/apps/hubble/src/storage/jobs/validateOrRevokeMessagesJob.ts


Message utilities
https://github.com/farcasterxyz/hub-monorepo/blob/main/apps/hubble/src/storage/db/message.ts

It's optional: "If this field is provided, we'll use that to compute the hash and the signature."

It's optional: "If this field is provided, we'll use that to compute the hash and the signature."

https://github.com/farcasterxyz/hub-monorepo/pull/1508

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