Block top - The block selection and duration from the blockchain (in blocks) on creation of the current block Nonce - The transaction selection for the from address (bear in mind this begins at 0 so a nonce of one hundred would truly be the a hundred and first transaction https://getidealist.com/story22434527/the-blockchain-explorer-usdt-trc20-diaries-https-blogfreely-net-pathfrog8-blockchain-trackers-a-gateway-to-comprehending-copyright-transactions