Block top - The block number and length on the blockchain (in blocks) on development of the present block Nonce - The transaction number for your from address (bear in mind this begins at 0 so a nonce of one hundred would essentially be the one hundred and first transaction https://socialfactories.com/story5748235/blockchain-explorer-usdt-trc20-fundamentals-explained-http-bioimagingcore-be-q2a-user-storegarlic8