Block height - The block selection and size in the blockchain (in blocks) on creation of the present block Nonce - The transaction variety for your from address (Remember this begins at 0 so a nonce of a hundred would in fact be the 101st transaction submitted by this account) https://onlybookmarkings.com/story20150977/what-does-eth-blockchain-explorer-mean-https-www-instapaper-com-p-16864836