Block top - The block selection and length of the blockchain (in blocks) on creation of the current block Nonce - The transaction amount to the from address (Keep in mind this commences at 0 so a nonce of a hundred would essentially be the 101st transaction submitted by this https://bookmarkbooth.com/story20620273/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-notes-io-ww2s8