A channel posts a call, you take the trade, and months later you owe a number nobody kept for you. Here is what to save at the moment of each fill, and why the channel's win-rate screenshot is worthless as a record.
A signal channel can tell you which exchange to open, but it cannot set your security for you. These are the first few switches you flip that decide whether a leaked password or a compromised bot drains the account or just annoys you.
The gap between a channel's published results and what lands in your account comes from a short list of places. Each one is a column you can write down.
Most reviews of signal channels are useless to the next reader and easy to take down, for the same reason: they describe a feeling instead of a sequence of events with dates on it.
An API key is a spare set of permissions handed to software. Which permissions to grant, which to refuse outright, and how to check what you actually issued.