Block height - The block quantity and duration of your blockchain (in blocks) on generation of the present block Nonce - The transaction number for your 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://health-lists.com/story21016707/5-easy-facts-about-blockchain-explorer-api-described-https-www-pdc-edu-url-https-cryptoexplorerhub-com