Block top - The block number and length 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 100 would truly be the a hundred and first transaction submitted https://allbookmarking.com/story20911894/what-does-blockchain-explorer-usdt-mean-https-www-multichain-com-qa-user-knotdrop3