This document describes a layer 2 protocol using a blockchain to secure and track ownership of external assets under custody. We propose a solution where a single decentralized entity is securing both assets under custody and blockchain transactions. The business as stake requirement associated with our distributed security model is ensuring safety of the assets under custody. Our blockchain is using a federated consensus where special nodes are in charge of validating the transactions. The ecosystem is based on a scalable governance model. The network is designed to enable multi-currency micro-payments as a service.