The blockchain is technology that uses cryptography to create a distributed immutable ledger. It is the technical foundation behind cryptocurrency and many other applications. Quantum computing is an emerging technology that uses principles of particle physics to perform computing, which is not what we are looking for. Edge computing moves compute power to Internet of Things (IoT) devices located at the “edge” of the network. Confidential computing is an area of re-search into methods for protecting data in use through the protection provided by a trusted execution environment (TEE), making it an incorrect answer.