Second layer
Or
Layer-2
,
L2
https://twitter.com/shogochiai/status/1358738928417665026?s=20
「SIDECHAINS ARE NOT LAYER 2 Let's put a myth to bed. Thread on the history of sidechains, their security properites, concluded by their differences to Layer 2 solutions. (there’s a lot of resources, feel free to skip/bookmark for later!) 👇」 / Twitter
「@Mario_Gibney My personal definition is (c). Instead of L2, I use the following terminology to distinguish between the three presented categories: (a) trustless (b) federated (c) custodial」 / Twitter
Ruben Somsen