wibowo, A. T., Hariadi, M., Suhartono, S. and Shodiq, M. (2022) “Enhanced PBFT Blockchain based on a Combination of Ripple and PBFT (R-PBFT) to Cryptospatial Coordinate”, Register, 8(2), pp. 133–141. doi: 10.26594/register.v8i2.3041.