Block height - The block number and duration on the blockchain (in blocks) on development of the current block Nonce - The transaction number to the from address (Remember this begins at 0 so a nonce of one hundred would essentially be the 101st transaction submitted by this account) Contract https://mylittlebookmark.com/story6309246/explorer-blockchain-base-an-overview-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers