c4 + ChatGPT

Combine ChatGPT’s multimodal capabilities with c4’s investigative methodology.

Install

How it works

ChatGPT provides the interface. c4 provides the investigative structure.

Cryptocurrency cases can involve wallet addresses, transaction hashes, screenshots, chats, websites, apps, bank records, audio recordings and victim statements. The challenge is rarely a lack of data. It is organizing that data into a defensible investigation.

Instead of treating every upload as an unrelated task, c4 Investigator helps the user build and update a structured case as new evidence arrives.

Authority, purpose and jurisdiction
Incident intake and immediate risks
Evidence preservation
Chronology development
Entity and indicator identification
Financial reconciliation
Blockchain analysis
Competing hypotheses
Legal and procedural review
Complaint and report drafting

Expandable by design

A growing collection of investigation skills

Each skill contains a structured methodology tailored to a particular kind of cryptocurrency-enabled crime.

Establish first
Defines what the investigator must establish before drawing conclusions.
Collect and preserve
Identifies the evidence to collect and how it should be preserved.
Ask and test
Sets out the questions to ask and competing hypotheses to test.
Use the right tools
Identifies which c4 Lab tools may answer a precise technical question.
Build the case record
Defines what a review-ready final case record should contain.
Refuse to invent
Makes clear what the system must not assume, overstate or fabricate.

Evidence-led investigation

Know what is established - and what is not

c4 Investigator classifies every material statement and assigns stable identifiers so each important finding can be traced to its support.

EV-001

Fact

Directly established by cited evidence, within the limits of that evidence.

TX-001

Reported

Stated by a victim, witness or other source but not independently established.

IOC-001

Inference

An investigative assessment drawn from the available evidence.

F-001

Unknown

A material fact that has not yet been established.

Connected c4 AI investigation system

Continuing case state

An investigation does not happen in one prompt

A victim statement may come first. Screenshots, transaction hashes, domain records, wallet-analysis results and provider responses may arrive later. After each evidence batch, c4 Investigator can update:

  • Evidence register, chronology, entities and indicators
  • Payment and transaction ledgers
  • Findings, contradictions and competing hypotheses
  • Investigative actions, limitations and open questions

First available skill

Fake trading app investigation

The first skill is designed for suspected fake trading and investment platforms: fabricated profits, small initial withdrawals, escalating deposits, and demands for further “tax”, verification, insurance, liquidity, security or AML payments.

It helps reconstruct the complete funnel, reconcile the victim’s actual loss, analyse apps, domains, accounts and wallet transfers, test fraud versus brand impersonation, and prepare a structured complaint or investigation report.

Built for the full investigation

  • Reconstruct the victim journey and persuasion funnel
  • Separate displayed “profits” from the victim’s actual loss
  • Analyse platforms, domains, accounts and wallet transfers
  • Prepare a review-ready complaint or investigation report

Connected ecosystem

From a technical question to the right c4 Lab tool

A recommendation states the exact question, the input to use, the result to preserve and what that result cannot prove. The investigator runs the tool and returns its output as new evidence.

File verification
Hash and verify files while preserving a traceable evidence record.
OCR and QR extraction
Extract useful text and encoded indicators from screenshots.
Image metadata
Inspect available metadata without overstating authenticity.
Domain and DNS
Investigate online infrastructure and related technical indicators.
Wallet intelligence
Build wallet profiles and examine available address intelligence.
Transactions and contracts
Create receipts, graphs and smart-contract analysis for the case.

c4 Investigator does not access private accounts, move cryptocurrency, recover seed phrases or broadcast transactions.

Human review remains central

Assistance for investigators - not a replacement for them

c4 Investigator helps people work systematically, preserve evidentiary distinctions and produce a record another investigator or reviewer can follow.

  • It does not register an FIR or conclusively decide that an offence occurred.
  • It does not identify a person from a wallet label or IP location alone.
  • It does not certify authenticity, admissibility or replace legal review.
  • It does not exercise police, freezing or search powers, or contact providers.

Who can use it?

Designed for investigation, compliance and learning teams

  • Law-enforcement, cybercrime and cryptocurrency investigation teams
  • Financial institutions and virtual asset service providers
  • Law firms, forensic practices, regulators and tax authorities
  • Corporate security and incident-response teams
  • Investigation trainers and students