Bitcoin AML Risk Scoring in n8n with Groq + Google Sheets

Instant Bitcoin AML Risk Scoring for Unconfirmed Transactions in n8n

This n8n workflow pulls the latest unconfirmed Bitcoin transactions from Blockchain.com, applies rule-based AML risk scoring, generates a one-line analyst note using Groq, and logs everything to Google Sheets for fast review.

What this workflow does

• Manual execution: Click Execute workflow to run the process.
• Fetch unconfirmed transactions: Requests recent unconfirmed transactions from blockchain.info and extracts key fields such as hash, amount (BTC), fee, outputs count, and a receiver address.
• Structuring detection: Counts how many transactions in the batch send to the same receiver address and flags addresses with 3+ occurrences as a possible structuring signal.
• Rule-based AML heuristics: Assigns a LOW / MEDIUM / HIGH risk level using signals including amount thresholds, high fees, many outputs, dust amounts, and the structuring flag.
• Process limit: Scores only the first 10 transactions.
• Groq AI analyst note: Sends each transaction plus risk signals to a Groq chat model to produce a single-line explanation and a suggested next action.
• Google Sheets logging: Appends transaction details and results (including hash, total_btc, fee, num_outputs, risk_level, and ai_analysis) to a new row in your spreadsheet.

Use cases

• Screen unconfirmed Bitcoin inflows for potential AML patterns during investigations.
• Create an analyst triage queue with risk levels and AI explanations in Google Sheets.
• Prototype AML alerting logic using n8n without building a full dashboard.

Technical details

• n8n nodes: Code, Limit, Filter, Sticky Note, HTTP Request, Google Sheets.
• External services: blockchain.info (unconfirmed transactions), Groq (chat model), Google Sheets (OAuth2 append).
• Setup: Add a Groq API credential, configure the Groq chat model, set Google Sheets OAuth2 credentials, and ensure your sheet tab/Spreadsheet ID match the append step.