Yeah I guess the last three sentences is what I mean when I say “not base layer”. You’re right, it technically is base layer, but not inherently built into the source code. Mixing requires extra effort that isn’t required for bitcoin to work.

frostdragon

bitcoin

Bitcoin Privacy / Mixing

Mixing is happening on the base layer? Coinjoin as well.

I guess you could argue that under certain definition that already counts as another L2 ... but that is not how we usually understand these words. 