The core philosophy of blockchain can be summarized as 'decentralization', 'contribution and compensation', and 'verification'. It is open to everyone, able to participate in the ecosystem we formed, and managed together by all participants through contributions and rewards. There are already many IQ testing and certification services, but most of them are run by individuals of operators or companies. This raises questions about the mutual verification and reliability of the IQ. This is a very big problem, especially in IQ measurements. Because IQ is based on statistical estimates. IQ Olympiad will introduce blockchain technology to construct a transparent operating environment through participation and verification of participants in intelligence index measurements, while structurally defending the possibility of forgery and data hacking.