Symmetry 2023 , 15 (7), 1345; https://doi.org/10.3390/sym15071345 Received: 27 May 2023 / Revised: 18 June 2023 / Accepted: 27 June 2023 / (This article belongs to the Section Computer […] Click here to view full article Tags:2daodecentraldecentralisedethetherethereumethereum blockchainetherstoken