Block Chain is one of the technologies that is gaining popularity in the modern world. The technology in question offers an exceptionally robust level of protection. Users do not have a lot of information about Block Chain, but its security is used to safeguard the data that is sent in several directions. This user continued to utilize the “ChaCha” and RBJ25 algorithms, which are considered to be compact and secure varieties. In this article, we present the new security mechanism that we have decided to call RPBB24-1. Two components make up the RPBB-24-1 approach, which are encryption and decryption. Five stages are involved in the encryption procedure. Assignment of the “Latin Alphabet cod” to PT is the first step in the procedure. Multiplying the number by itself four times using Equation (1) is the second step. Using encrypted data, the third procedure involves swapping the cell values, but the process begins with the 0th cell value from the most recent cell value. The fourth step involves dividing the prime key into the values of the matrix cells. Implementing the “ChaCha” algorithm in the matrix is the fifth step in the procedure. At long last, the ordinary text is transformed into encrypted text. Unlike the encryption procedure, the decryption approach works in the opposite direction. When compared to the approach that is currently in use, the suggested method offers a higher level of security. © 2024 Elsevier B.V., All rights reserved.