Blockchain is a decentralized distributed database of immutable records, where transactions are protected by strong cryptographic algorithms and the network status is maintained by the Consensus algorithm.
Ethereum is an open source Blockchain platform for developing decentralized applications.
Blockchain was essentially introduced with the evolution of bitcoins. But its real potential lies in developing decentralized applications.
If you'd like to have a look at some companies already building on top of Ethereum, check out:
- Airlock - a IoT (Internet of Things) company implementing a decentralised generalist locking system.
- CubeSpawn - a FMS (flexible manufacturing system) offering big factory automation to small shops.
- Crypto Swartz - A tag-based backend reputation system for online content.