Block top - The block selection and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range with the from address (bear in mind this starts at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://bookmarkeasier.com/story20520912/not-known-facts-about-blockchain-explorer-unconfirmed-transaction-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers