Truedeal is a blockchain project that takes the second-hand luxury goods market as an entry point and aims to build a global idle goods trading and circulation ecology. Establish a commodity traceability certification system and industry smart contract standards based on the blockchain. The arbitration system provides remote commodity identification, traceability, financial guarantees, community arbitration and other services for both parties to the transaction, forming a decentralized and trustless value network, thereby improving second-hand The circulation scale and circulation efficiency of luxury goods further promote it to a wider market.