Aiming at problems in current real estate information registration and certificate issuing,for instance,vulnerability to tampering during data circulation,difficulty in verifying the authenticity of data sources,inadequate avenues of recourse for mis-information and others,this study designs and implements a blockchain-based real estate deposition system.This system uses smart contracts and Inter Planetary File System to anchor real estate registration and certificate information on the blockchain,forming a traceable and tamper-proof record.Combing with technologies like smart contract and digital signature,this system also provides feedback and an approach to complain about distortion before data is uploaded to blockchain.Moreover,this system serves govern-ment agencies with a method for retaining evidence of data distortion and for pursuing accountability.The analysis of the system shows the system is tamper-proof,credible and appealable compared to current real estate deposition application,providing new ideas and technical support for the digital deposition of real estate.