In a modern educational context, where continuous learning and professional development of employees in the learning environment becomes important, the use of innovative technologies is a necessity. Therefore, the research relevance is determined by the need to assess the effectiveness of using a platform with elements of blockchain technology for the professional development of teachers. The research aims to conduct a comprehensive study of the effectiveness of a platform for teachers' professional development using blockchain technology in Kazakhstan. To achieve this goal, a combined research approach was applied, including qualitative and quantitative methods of analysis. As a result of the comparison of performance, energy consumption and resistance to attacks, a recommended consensus algorithm was proposed for implementation in the blockchain system to improve the efficiency of the educational process. Conducting simulations on platforms using multi-agent models allowed us to evaluate the system performance, transaction latency and throughput under different workloads and data volumes. The results of the study of blockchain platform resilience to various attacks allowed us to identify measures to ensure the security and integrity of the blockchain network. Simulations of different scenarios of smart contract execution allowed to evaluation of their performance, stability and security, and the modelling of decision-making and voting mechanisms in the blockchain platform allowed to evaluation of the efficiency, transparency, and fairness of the governance system. The results obtained allow us to conclude that the use of a platform with elements of blockchain technology for the professional development of teachers in Kazakhstan is highly effective. The study itself contributes to the development of education and pedagogical practice by providing new opportunities for improving the quality of education and teacher professional development.