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it is proof that I am jl777
use the advanced functions icon (gears) in the NXT GUI and there is a Validate token function that you can use to validate tokens

Checked the token, verified.

NXT client -> settings -> generate token -> verify token -> paste long string as token, text as data, check the assets list of the signing account

Can you share how I would verify it? I use NXT but I don't see any transactions from your account that relate to this.

Edit: I also verified, thanks.

Is there a way to automate this process?