What is Childchain?

A childchain is a scalable blockchain on the OMG Foundation which is anchored to Ethereum. OMG's scaling solution optimizes the speed of the Ethereum network by moving transactions off of the Ethereum mainchain and onto childchains. The childchain does not hold users' funds and it relies on the Ethereum blockchain and a decentralized network of watchers for its security. Childchains are different from sidechains in that sidechains have their own security mechanisms and custody users' funds.