Block top - The block selection and length from the blockchain (in blocks) on generation of the present block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://1001bookmarks.com/story20554031/the-blockchain-explorer-usdt-trc20-diaries-https-zenwriting-net-lampwhorl7-from-information-into-insights-leveraging-distributed-ledger-analyzers-in