Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction amount to 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://free-bookmarking.com/story20290334/not-known-facts-about-blockchain-explorer-unconfirmed-transaction-https-offersen-deleuran-3-technetbloggers-de-unlocking-clarity-method-of-blockchain-navigators-operate