Block top - The block variety and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction range for the from address (bear in mind this begins at 0 so a nonce of 100 would basically be the 101st transaction submitted by this account) https://bookmarkingbay.com/story20588440/blockchain-explorer-usdt-trc20-fundamentals-explained-https-md-un-hack-bar-de-0oxwjunrtqeqpltmmf-tlw