Block top - The block selection and duration with the blockchain (in blocks) on creation of the current block Nonce - The transaction range with the from address (bear in mind this begins at 0 so a nonce of one hundred would essentially be the one hundred and first transaction https://bookmarksaifi.com/story20300627/what-does-blockchain-explorer-usdt-mean-https-www-pdc-edu-url-https-cryptoexplorerhub-com