This course is designed to teach you the basics of blockchain programming. You will learn the fundamentals of blockchain technology, including distributed ledger technology, cryptography, and consensus algorithms. You will also learn how to develop applications using popular blockchain platforms such as Ethereum, Hyperledger Fabric, and Corda
A blockchain is a distributed ledger with growing lists of records (blocks) that are securely linked together via cryptographic hashes. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data. Since each block contains information about the previous block, they effectively form a chain, with each additional block linking to the ones before it. Consequently, blockchain transactions are resistant to alteration because, once recorded, the data in any given block cannot be changed retroactively without altering all subsequent blocks and obtaining network consensus to accept these changes.