Table 2. Classification of blockchain technology based on their applications.
| Feature | Public blockchain | Private blockchain | Consortium blockchain | |
|---|---|---|---|---|
| Access | Open to all | Restricted to authorized users | Restricted to authorized participants | |
| Permission | Permissionless | Permissioned | Permissioned | |
| Governance | Decentralized | Centralized | Shared control | |
| Consensus | Proof of work, proof of stake | Various consensus mechanisms | Various consensus mechanisms | |
| Scalability | Limited | Better than public | Better than public | |
| Security | High | High | High | |
| Efficiency | Slow | Fast | Fast | |
| Use cases | Cryptocurrency, decentralized apps | Internal enterprise use | Collaborative projects between organizations | |