#Sidechain s are blockchains that run in paralel to a Layer-2 blockchain.

The goal: adding scalability and flexibility while reducing gas costs for users and developers.

The primary difference between sidechains and Layer-2s is that sidechains do not inherit the security of the L1 blockchain they are built alongside, L2 chains directly inherit it.

Popular sidechains with their tokens

Polygon $POL is an old token that has been roaming the earth for years, many people scold him regularly.

Gnosis Chain GNO

Skale $SKL