CBSA Blockchain Use Case Analysis 4

Question 1

A carbon credit marketplace wants to prevent double-spending of credits across multiple registries. How does blockchain specifically solve this?

Accepted Answer

By maintaining a single shared ledger where each credit has a unique token that cannot be spent twice

Answer

Tokenizing each carbon credit on a shared blockchain ledger ensures a credit's state is visible to all parties, making it cryptographically impossible to spend the same credit twice.

Question 2

In a seafood supply chain use case, blockchain is used to trace fish from catch to consumer. Which data element is LEAST useful to record on-chain?

Accepted Answer

The recipe used by the restaurant serving the fish

Answer

Restaurant recipes are not supply chain provenance data and have no impact on food safety, authenticity, or traceability — they belong in the restaurant's own systems, not on a shared ledger.

Question 3

A startup proposes using blockchain to manage a company's internal To-Do list shared among 5 employees. What is the architect's primary recommendation?

Accepted Answer

Reject blockchain; a traditional database or project management tool is more appropriate

Answer

Five trusted employees sharing an internal tool have no need for decentralization, consensus mechanisms, or immutability overhead — a standard database is far simpler and more efficient.

Question 4

Which feature of blockchain is MOST relevant for a use case focused on audit compliance in financial reporting?

Accepted Answer

Immutable append-only transaction history

Answer

An immutable append-only ledger creates a permanent, tamper-evident audit trail that regulators and auditors can independently verify without relying on a single institution's records.

Question 5

An e-commerce platform wants to offer decentralized product reviews that cannot be censored or manipulated by the platform. What is the key blockchain property enabling this?

Accepted Answer

Censorship resistance through decentralized record storage

Answer

Storing reviews on a decentralized blockchain means no single entity — including the platform — can delete, alter, or suppress posted reviews, ensuring authentic consumer feedback.

(CBSA) Certified Blockchain Solution Architect Practice Test

(CBSA) Certified Blockchain Solution Architect Practice Test

CBSA Blockchain Use Case Analysis 4