TNC（Trinity Network Credit）--- The TNC is the “protocol fuel” for the Trinity network, which is used to (i) pay the deposit for the state channel and the cost of fuel requisite for channel establishment, and (ii) reward the participants in the Trinity network. The Trinity network protocol is a tailorable layered protocol architecture. Trinity’s underlying communication layer provides the most fundamental asset flow and micro-payment functions, which incurs no extra payment fee to users. Trinity is far more than an underlying protocol providing payment functions only. Rather, it is a decentralized off-chain expansion technology ecosystem facilitating free movement of digital assets. The ecosystem’s robust growth requires not only technology updates but also community incentives. The TNC serves as the incentives for the Trinity network. It is also a requisite hinge for off-chain expansion technologies and relevant production application, which enables digital assets to serve the production more effectively.