Nama : Sultan Chairul
Nim : 2581484737
Assignment Week 4 Modul 4 Financial Technology
Suggested Materials:
“Bitcoin and Cryptocurrency Technologies” by Arvind Narayanan et al. (Chapters 1-2).
Investopedia articles on blockchain, Bitcoin, and Ethereum.
Video explainers on how blockchain technology works.
Checklist of Questions:
Explain the concept of a decentralized ledger and its primary advantages over a centralized database.
What is the difference between a public and a private blockchain?
Discuss the potential applications of blockchain technology beyond cryptocurrency.
Answer :
1. Decentralized Ledger and Its Advantages
A decentralized ledger is a type of database that is distributed across multiple computers (nodes) rather than being stored in one central location. Each node maintains a copy of the ledger, and all updates are synchronized through a consensus mechanism (like Proof of Work or Proof of Stake).
Primary Advantages over a Centralized Database:
Transparency: All participants can view the same records, reducing fraud or hidden alterations.
Security: Data is encrypted and distributed, making it hard for hackers to corrupt or alter records.
No Single Point of Failure: Because the data is spread across many nodes, system downtime or data loss is minimized.
Trustless Operation: Transactions are verified by consensus rather than by a central authority.
2. Difference Between Public and Private Blockchain
A public blockchain is open to everyone. Anyone can join the network, read, and add data (according to the network’s rules). Examples include Bitcoin and Ethereum. This type of blockchain is fully decentralized and transparent, but it tends to be slower because many nodes must reach consensus before a transaction is confirmed.
A private blockchain, on the other hand, is restricted and only accessible to specific participants who are granted permission—usually by an organization or consortium. The data and transactions are not visible to the public. Examples include Hyperledger and Corda. Private blockchains are faster and more efficient because they involve fewer nodes, though they are less decentralized.
3. Applications of Blockchain Beyond Cryptocurrency
Blockchain can be used in many fields beyond digital money, such as:
Supply Chain Management: Track the movement and authenticity of goods from production to delivery.
Healthcare: Securely store and share medical records between hospitals and patients.
Voting Systems: Enable transparent and tamper-proof digital voting.
Real Estate: Simplify property transfers and prevent document fraud.
Digital Identity: Give users control over their personal data and authentication.
Intellectual Property: Protect copyrights, patents, and digital as
sets through tokenization.