Enhanced blockchain secure transaction system

Glossary

Definition of termsDistributed ledger system (DLS)A decentralized database system shared by participants to maintain and record transactions. Consensus systemA mechanism by which participants in a distributed system can agree on the current state of data. BlockchainA growing list of records (called blocks) linked together in chronological order, secured using cryptography. BlockA single record in a blockchain that contains a set of verified transactions. Smart contractA computer program stored on a blockchain and automatically executed when predefined conditions are met. AuthenticationThe process of confirming the authenticity or validity of someone or something. BiometricA unique biological feature used to identify an individual, such as a fingerprint, facial recognition, or iris scan. Public-private key pairTwo associated keys used to encrypt and decrypt data. Cryptographic keyA randomly generated string of code used to encrypt and decrypt data. Digital signatureAn electronic signature that verifies the authenticity of an electronic document or message.

Short answer questions

Explain the main features of a distributed ledger system (DLS). Answer: A DLS is a decentralized database system shared and replicated by multiple participants in a network. It allows for a transparent, secure, and tamper-proof record of transactions without the need for a central authority.

What is the difference between blockchain technology and traditional databases? Answer: Blockchain is a distributed ledger that uses cryptography to ensure the integrity of data, while traditional databases rely on a central authority to manage and protect data. Data on a blockchain is immutable, while data in a traditional database can be modified.

What role do smart contracts play in a blockchain system? Answer: Smart contracts are computer programs that are stored on a blockchain and automatically executed when predefined conditions are met. They can automate transaction processes, reduce the need for intermediaries, and increase transparency and efficiency.

Explain the importance of the verification process in an enhanced blockchain system. Answer: Verification is essential to ensure that only authorized parties can participate in transactions. By verifying the identity of users, the system can prevent fraudulent activity and maintain the integrity of the blockchain.

How can biometrics be used to enhance the security of blockchain transactions? Answer: Biometrics, such as fingerprints or facial scans, can be used as a unique form of authentication, adding a layer of security to transactions. It helps prevent identity theft and ensures that only authorized users can access their accounts.

Explain the role of public-private key pairs in blockchain transactions. Answer: Public keys are used to authenticate the identity of users and encrypt data, while private keys are used to decrypt data and digitally sign transactions. This mechanism ensures that only the intended recipient can decrypt and access transaction data.

How are cryptographic keys important in maintaining the confidentiality of blockchain transactions? Answer: Cryptographic keys are used to convert transaction data into an unreadable format, thereby preventing unauthorized access. Only those with the corresponding decryption key can access and decrypt the information, thereby ensuring confidentiality.

How do digital signatures help ensure the integrity of blockchain transactions? Answer: Digital signatures act as electronic signatures, verifying the authenticity and origin of transactions. It ensures that transaction data has not been tampered with during transmission and provides an undeniable record of transactions.

Explain the role of the audit trail in an enhanced blockchain system. Answer: The audit trail provides a transparent and immutable transaction history that allows all actions within the system to be tracked and verified. This helps to increase accountability and can be used to identify and investigate suspicious activities.

How do enhanced blockchain systems help to increase transparency in supply chain management? Answer: Enhanced blockchain systems can improve transparency in supply chain management by creating a decentralized and tamper-proof record of a product’s journey from origin to final destination. This allows tracking of product movement, verification of its authenticity, and reduces the possibility of fraud and counterfeiting.

Paper topic

Discuss the benefits and challenges of implementing enhanced blockchain systems in supply chain management.

Analyze how enhanced blockchain systems can revolutionize the healthcare industry, especially in terms of patient data management and medical record security.

Evaluate the potential of enhanced blockchain systems in improving the security of financial transactions and preventing fraud.

Explore the application of enhanced blockchain systems in digital identity management, with a focus on enhancing privacy and security.

Study the impact of enhanced blockchain systems on voting systems, analyzing how they can improve transparency and trust in the electoral process.