Block height - The block quantity and length in the blockchain (in blocks) on creation of the present block Nonce - The transaction selection for 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://dftsocial.com/story21753493/the-ultimate-guide-to-eth-blockchain-explorer-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers