CBSA Blockchain Use Case Analysis 3 — Questions and Answers
Question 1: A luxury goods brand wants to combat counterfeiting by registering products on a blockchain. What additional technology should be paired with blockchain to ensure physical-to-digital authenticity?
- Zero-knowledge proofs
- NFC chips or QR codes embedded in products (Correct answer)
- Sharding for scalability
- Layer-2 payment channels
Correct answer: NFC chips or QR codes embedded in products
NFC chips or QR codes create a tamper-evident physical link between the product and its on-chain record, solving the 'oracle problem' for physical goods.
Question 2: An NGO distributes aid to refugees using blockchain-based digital wallets. What is the primary advantage over traditional cash aid?
- Higher interest rates on stored funds
- Transparent, auditable disbursement reducing fraud and diversion (Correct answer)
- Faster internet connectivity in refugee camps
- Elimination of currency risk
Correct answer: Transparent, auditable disbursement reducing fraud and diversion
Blockchain provides an auditable trail of every disbursement, making it nearly impossible to divert funds undetected and ensuring aid reaches intended recipients.
Question 3: A music streaming platform wants to use blockchain to ensure artists receive royalties automatically. Which mechanism enables this?
- Distributed hash tables for music storage
- Smart contracts that split and distribute payments upon each stream event (Correct answer)
- NFT auctions for album ownership
- Proof-of-Stake consensus for playlist curation
Correct answer: Smart contracts that split and distribute payments upon each stream event
Smart contracts can encode royalty split logic and automatically distribute micropayments to all rights holders each time a stream event triggers the contract.
Question 4: When assessing a blockchain use case in insurance, which scenario benefits MOST from parametric insurance on blockchain?
- Life insurance policy underwriting
- Automatic crop insurance payouts triggered by verified weather oracle data (Correct answer)
- Health insurance claims adjudication
- Auto insurance fraud investigation
Correct answer: Automatic crop insurance payouts triggered by verified weather oracle data
Parametric insurance pays automatically when a measurable parameter (like rainfall below a threshold) is verified by an oracle, eliminating slow claims processes for crop insurance.
Question 5: A consortium of airlines wants to share loyalty points so passengers can redeem miles across carriers. Which blockchain type is most appropriate?
- Public permissionless blockchain
- Private blockchain owned by one airline
- Consortium permissioned blockchain governed by participating airlines (Correct answer)
- Hybrid blockchain with public settlement layer
Correct answer: Consortium permissioned blockchain governed by participating airlines
A consortium permissioned blockchain lets competing airlines share a trusted loyalty ledger without any single carrier controlling it, balancing privacy with interoperability.
Question 6: What is the 'oracle problem' in the context of blockchain use cases involving real-world data?
- The difficulty of achieving consensus among blockchain nodes
- The challenge of securely and reliably bringing off-chain data onto the blockchain (Correct answer)
- The inability of smart contracts to handle complex logic
- The problem of storing large files on-chain
Correct answer: The challenge of securely and reliably bringing off-chain data onto the blockchain
The oracle problem refers to the trust challenge of feeding real-world data (prices, weather, events) into smart contracts without introducing a centralized point of failure.
Question 7: A city government wants to use blockchain for voting in municipal elections. Which concern is MOST critical to address before deployment?
- Transaction throughput during peak voting hours
- Voter identity verification and prevention of duplicate votes while preserving anonymity (Correct answer)
- Cost of gas fees per vote transaction
- Block size limitations for ballot storage
Correct answer: Voter identity verification and prevention of duplicate votes while preserving anonymity
Ensuring each verified voter casts exactly one ballot while protecting vote secrecy is the paramount challenge in blockchain voting, requiring careful identity and zero-knowledge proof design.
CBSA Blockchain Use Case Analysis 3
A luxury goods brand wants to combat counterfeiting by registering products on a blockchain.
What additional technology should be paired with blockchain to ensure physical-to-digital authenticity?