Cryptoasset Anti-Financial Crime Specialist (CCAS) Certification Practice Test

In filing a SAR for a customer associated with regular deposits from known criminal addresses, what is crucial to include besides the wallet address?

1. The public key of the customer's wallet

2. The hashes of the questionable transactions

3. The private key of the criminal address

4. The QR code of the customer's address

The correct answer is: The hashes of the questionable transactions

Including the hashes of the questionable transactions in the Suspicious Activity Report (SAR) is essential because it provides a verifiable reference to specific transactions that may indicate illicit activity. Transaction hashes serve as unique identifiers for individual transactions on a blockchain, enabling investigators to trace and analyze the flow of funds. By incorporating these hashes, the reporting entity enhances the quality and comprehensiveness of the report, allowing analysts to efficiently track suspicious transactions back to their origins, understand their patterns, and establish connections between addresses involved in potential criminal activity. The other options, while they might seem relevant, do not provide the same level of utility in a SAR. For instance, the public key of the customer's wallet may not be necessary, as the wallet address itself is typically sufficient for identification and tracking. The private key is highly sensitive and should never be shared, as it grants complete control over the wallet. Lastly, a QR code of the customer's address simply encodes the wallet address and does not add significant value beyond what is already provided by the wallet address itself. Therefore, focusing on transaction hashes is pivotal when highlighting specific suspicious activities in a SAR.