Quoted e verificado
https://brainwalletx.github.io/#verify?vrAddr=1N28gknXF1bACW3BgbhvVKZYw98n8JXecq&vrMsg=Hello%20I%20want%20to%20secure%20my%20account%20thats%20why%20i%20verify%20my%20message%20here%20my%20name%20is%20Silvio_Carlos_Junior%20and%20today%20May%207%2C%202018&vrSig=H8lybbePU5YKVPCFTdyhwLrKSQ%2F%2BdHRK7JZBGL68yUGaDu91i9Ey2%2Bs%2F7Yj8s86C9XAZ1KciWtBPnlRILCRYK5I%3D


Eu acho que no mastering bitcoin é capaz de ter algo. Acho que funciona de forma similar a assinatura em transações.
https://github.com/bitcoinbook/bitcoinbook