13.4 Trust Tradeoff Between Bitcoin Single Signature, Lightning Network, and Sidechains || Ruben Somsen

A Bitcoin address is an unbreakable vault that can only be opened if a valid solution to the script is provided. Many Bitcoin wallets use single public key scripts that only require a signature of one private key to be validated. Lightning Network uses non-custodial multi signature payment channel scripts, with pre-signed refund transactions to prevent theft. But with sidechains the base layer bitcoin are in full control of the sidechain protocol.