Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that from address (Keep in mind this starts at 0 so a nonce of 100 would in fact be the a hundred and first transaction https://top10bookmark.com/story20556194/the-best-side-of-explorer-blockchain-usdt-http-www-stes-tyc-edu-tw-xoops-modules-profile-userinfo-php-uid-3693980