We can expect to see a lot of exciting advancements in blockchain technology over the next few years. By 2023, we should see blockchain technology being used for a range of applications such as smart contracts, digital identity management, and data security. We may also see new protocols and consensus algorithms being implemented to further enhance the scalability and security of the blockchain. Additionally, more and more businesses are beginning to adopt blockchain technology, so it's likely that we'll see a lot of new blockchain-based solutions being developed in the next three years.