What Is Truebit (TRU)? Truebit allows software running outside a blockchain environment to provide trusted results to smart contracts and applications running within a blockchain. The platform allows practically unlimited external compute resources to be applied in a trusted way to extend the performance, throughput, and scalability of its host blockchain. Research began in 2015 on this verification solution which today connects blockchains to both on-chain and off-chain data while enabling smart contracts to securely perform complex computations in standard, easy-to-use programming languages at significantly reduced gas costs.