What does OK Button look like on Telegram?

On Telegram it is the design shipped in Telemoji November 2023, shown above at full size. Older revisions are listed beneath it.

When did Telegram add OK Button?

Telegram first drew OK Button in Telemoji January 2023, released January 1, 2023.

Telegram FZ-LLC has shipped 3 versions of OK Button. Each is dated, so you can see when the design changed.

Telegram FZ-LLC has drawn OK Button 3 times. Every revision Telegram has shipped is below, newest first.

What does OK Button look like on Telegram?: On Telegram it is the design shipped in Telemoji November 2023, shown above at full size. Older revisions are listed beneath it.
When did Telegram add OK Button?: Telegram first drew OK Button in Telemoji January 2023, released January 1, 2023.
How many times has Telegram redrawn OK Button?: Telegram FZ-LLC has shipped 3 versions of OK Button. Each is dated, so you can see when the design changed.

Telegram artwork for this emoji spans 2023 to 2023.