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 off at 0 so a nonce of 100 would essentially be the 101st transaction submitted by this https://bookmarkcolumn.com/story20211455/5-easy-facts-about-blockchain-explorer-api-described-http-ezproxy-cityu-edu-hk-login-url-https-cryptoexplorerhub-com