Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction amount with the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://bookmarkzap.com/story20131685/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-case-edu-cgi-bin-newsline-pl-url-https-cryptoexplorerhub-com