"After filling the captcha, the site doesn't show the token but redirects to a signalcaptcha:// url that contains the token. [...] To see the URL you can open t

"After filling the captcha, the site doesn't show the token but redirects to a signalcaptcha:// url that contains the token. [...] To see the URL you can open the browser developer tools (F12) before completing the captcha." https://github.com/AsamK/signal-cli/wiki/Registration-with-captcha https://github.com/AsamK/signal-cli/wiki/Registration-with-c... Using Tor Browser I can see the signalcaptcha:// address in the window title of a detached Developer Tools window.