The most celebrated aspect of blockchain technology is that information is stored in an immutable ledger without the need for a central authority or intermediary. Despite this, not enough attention is paid to the negative impact created when an input to the blockchain is not trustworthy. iCash introduces the Proof of Trust (PoT) protocol as a multi-platform blockchain application that enables real-world inputs to be validated by decentralized participants in settling Smart Contracts at scale. The nature and scale of blockchain activity necessitates trustworthy inputs. While Proof of Work and Proof of Stake provide distributed trust for data storage, the introduction of PoT provides distributed trust for data input. By adding a trustworthy application protocol layer, real world interaction and events can be verified before being entered into the blockchain.