Create a Binance API key

A self-generated key: you bring a public key to Binance and take an API key back.

The steps, in words

1. Search for API Management
   In the Binance app, tap the search bar at the top of the home screen and type api. Open the Functions tab and tap API Management. It opens as a web page inside the app.
2. Create an API key
   Tap Create API at the top. Not the Tax Report one.
3. Choose Self-generated
   Pick Self-generated — the key pair you made in step 1 — and tap Next. A system-generated key would give you a secret that A9 does not use.
4. Paste the public key
   Copy the public key from step 1 with the button here, paste it into Your public key — the whole block, BEGIN and END lines included — and tap Next.
5. Give the key a label
   Any label works, such as A9. Tap Next.
6. Pass the security check
   Binance asks for your authenticator code and an email code. Enter both and tap Submit.
7. Copy the API key into A9
   The new key appears in the list, tagged Ed25519. Tap Copy under API Key and paste it into the field here. There is no secret: the private key from step 1 is the other half.