@misc{cryptoeprint:2019:827, author = {Zvi Schreiber}, title = {k-root-n: An efficient O(√n) algorithm for avoiding short term double spending in Distributed Ledger Technologies such as Blockchain}, howpublished = {Cryptology ePrint Archive, Report 2019/827}, year = {2019}, url = {https://eprint.iacr.org/2019/827}, }