How to Log In, Use APIs, and Trust Biometrics on Exchanges — a Practical Upbit-Focused Guide
Whoa! This feels timely. I've spent a lot of time fiddling with exchange APIs and login flows, and somethin' about the way people treat keys and biometrics bugs me. Short version: login is simple when you understand the layers. Longer version: there are traps, edge cases, and trade-offs that matter if you hold real funds. [...]