Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of traditional database vs. blockchain (modified from McBee et al. [4])
| Property | Blockchain | Traditional database |
|---|---|---|
| Immutability | Yes | No |
| Operations | Data may only be appended | Create, update, read, delete |
| Topology | Distributed (many nodes) | Centralized (one or few nodes) |
| Redundancy | Multiple due to distributed architecture | Central node is single point of failure |
| Consensus | Majority of peers agree on outcome of transaction | Central authority |
| Latency | High | Low |
| Transactional cost | High | Low |
