Channels selling trading signals are everywhere: Telegram, Discord, Instagram. Almost all of them post screenshots of spectacular wins. The problem is that a screenshot proves nothing. It might show a demo account or a single good month, or it might have been edited. The only serious proof is a complete history, calculated from the orders actually placed with a broker.
Self-reported or verified: the difference that matters
A self-reported history is entered by the trader: they choose what to publish and can conveniently forget the losses. A verified history is pulled directly from the trading account (MetaTrader, cTrader or a broker's API): every order opened and closed is recorded, winners and losers alike. That second kind is what you should insist on before following a signal or paying for a subscription.
