Block top - The block selection and duration of your blockchain (in blocks) on creation of the current block Nonce - The transaction variety for your from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://thebookmarklist.com/story20542955/the-smart-trick-of-blockchain-explorer-app-that-nobody-is-discussing-https-skitterphoto-com-photographers-1387379-jimenez-deleuran