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Great. @anthonyadavisii might be very interested in that. He is trying the same too.

I ended up going different way.
Server encode a token/secret using user's public key. Then user decode it using steem_keychain.requestVerifyKey. If successful then we got a handshake for the future.

It could be better in some cases than the way I wrote about. I am guessing we need to send 2 requests, one for fetching encoded message, another letting server know use successfully decoded the message.

But I think its more secured in some use cases. Thanks for sharing the idea.

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