Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would basically be the one hundred and first transaction submitted https://health-lists.com/story21017381/what-does-blockchain-explorer-usdt-mean-https-www-blurb-com-user-optionname7