Cryptocurrency Investigation Field Guide: A Project Exploration

Understanding Cryptocurrency Storage Methods

Cryptocurrency wallets come in various forms, each with unique characteristics and investigative implications:

1. Computer Wallets (Hot Wallets)

The most common storage solution features:

• User-friendly interfaces for sending/receiving crypto

• Prominent programs include:

  • Electrum
  • Armory
  • Bitcoin Core
  • MultiBit-HD

Pro Tip: Search for "wallet" programs on seized devices to quickly locate potential cryptocurrency storage.

2. Mobile Wallet Apps

Popular options include:

• Mycelium
• Breadwallet
• Jaxx
• Airbitz

Security Note: Some apps implement PIN protection, requiring additional authentication for access.

3. Exchange-Based Online Wallets

Key characteristics:

• Require login credentials
• Often incorporate two-factor authentication (2FA)

• Major platforms:

  • Coinbase
  • Gemini
  • Kraken

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Investigation Insight: These exchanges typically require KYC verification and maintain transaction records that may be accessible via legal processes.

Cold Storage Wallets: The Investigative Challenge

Cold storage represents the most secure—and hardest to detect—storage method:

Physical Manifestations:

• Paper wallets
• USB-stored files
• Memorized private keys (extremely rare)

BIP-39 Standard Recovery Seeds:

• 12-24 word mnemonic phrases
• Alternative to complex private keys
• Allows wallet recovery across compatible software

Forensic Investigation Procedures

Computer Examination Protocol:

1. Check browser history for exchange activity
2. Search for wallet programs
3. Examine downloads and documents folders

Mobile Device Checklist:

• Identify crypto-related apps
• Check for exchange applications
• Review app permissions and storage

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Cold Storage Evidence Collection:

• Search for paper documents
• Examine USB drives
• Document potential word sequences (for recovery seeds)

Critical Reminder: Recovery seeds found should be immediately secured and can be used to transfer funds to law enforcement-controlled wallets.

FAQ Section

Q1: How can investigators quickly identify crypto wallets on a computer?

A: Search for programs containing "wallet" in the name and check common installation directories.

Q2: What makes cold storage wallets different from other types?

A: They store private keys completely offline, leaving no digital footprint on connected devices.

Q3: Are all cryptocurrency exchanges cooperative with law enforcement?

A: While many regulated exchanges comply with legal requests, cooperation levels may vary by jurisdiction and platform policies.

Q4: How important is it to find recovery seeds during an investigation?

A: Extremely crucial—recovery seeds provide complete access to the associated cryptocurrency funds.

Q5: What's the first thing investigators should check on mobile devices?

A: Installed applications list for wallet or exchange apps, followed by app data examination.