Block top - The block selection and length of the blockchain (in blocks) on creation of the current block Nonce - The transaction selection with the from address (Remember this starts off at 0 so a nonce of a hundred would truly be the 101st transaction submitted by this account) https://bookmarkprobe.com/story20561261/blockchain-explorer-usdt-trc20-fundamentals-explained-https-zenwriting-net-lampwhorl7-from-information-into-insights-leveraging-distributed-ledger-analyzers-in