**If you follow the protocol correctly**, I wouldn't say you need to _trust_ your channel partner. This condition means to me it's just not as simple as onchain to not involve trust. But trust is not necessary.

Would you say that there is a little bit more trust involved with lightning is than there is for onchain?

You have to trust your channel partner a little bit. (if they force close on you and you aren't paying attention, or you can't get to the chain for some reason...)

Scoresby

My definition of layer 2 doesn’t mean you don’t trust anyone. But I gotta admit, [I know that I know nothing](https://stacker.news/items/1015955?commentId=1015998)!

0xbitcoiner

lightning

Blitz Wallet Web: A self-custodial Bitcoin Lightning wallet powered by Spark

Gian

> requires no trusted entities at all.

This should also be the definition of Layer 2 imo. if you need to trust somebody, it's not a Layer 2. So by definition, Lightning is the only Layer 2.

But other "Layer 2 solutions" probably don't like that definition, so they try to make it mean something else. But I don't know what their definition is. Anything is Layer 2 as long as it's not Layer 1?