Block top - The block selection and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection for the 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://bookmarkcitizen.com/story20521322/blockchain-explorer-usdt-trc20-fundamentals-explained-https-cuwip-ucsd-edu-members-georgeuncle0-activity-1839979