Contract Monitor - ChainAnalyzer

Overview

Contract Monitor lets you register a token contract address (e.g. USDT, JPYC) and automatically detects malicious transaction patterns involving that token. Unlike wallet monitoring, it doesn't assess the token's own risk — it detects fraudulent activity that abuses the token.

Contract Monitor does not display a risk score for the token itself. A legitimate token (e.g. JPYC) can have malicious transactions involving it — showing a high risk score would be misleading. Instead, it displays the count of suspicious pattern findings.

Wallet Monitoring vs Contract Monitoring

🔍 Wallet Monitoring

Periodically tracks a wallet address's risk score. Detects and notifies on risk level changes.

📋 Contract Monitoring

NEW

Monitors all transfers of a token and detects 5 types of malicious patterns. Findings are recorded as discoveries.

Detection Patterns

CRITICAL

🚨 Known Malicious

ScamDB-registered drainers or scam addresses involved in token transfers

Match sender/receiver addresses against ScamDB known malicious address list

CRITICAL

🎭 Address Poisoning

Zero or dust-value transfers using addresses with matching first/last characters of legitimate recipients

value == 0 or dust amount AND address prefix/suffix (4 chars) matches other legitimate transfer recipients

HIGH

🔗 Relay Chain

Addresses that forward received funds to another address within 1 hour

Forwards 90%+ of received amount to another address within 1 hour

HIGH

📡 Rapid Distribution

One address sending to 10+ recipients within 1 hour

Single address sends to 10+ distinct addresses within a 1-hour window

MEDIUM

💰 Large Transfer

Statistically anomalous large transfers (top 0.1 percentile)

Transfer amount exceeds the 99.9th percentile of all transfers

Supported Chains

Chain	API	Status
Ethereum	Etherscan V2 (chainid=1)	Supported
Polygon	Etherscan V2 (chainid=137)	Supported
Avalanche	Routescan API	Supported

Uses the Etherscan/Routescan contractaddress parameter to fetch all transfers for a specific token.

How It Works

Fetch Transfers — Retrieves recent token transfers via Etherscan API (up to 5,000)
Pattern Analysis — Analyzes each transfer against 5 detection patterns
Discovery Registration — Records suspicious addresses as discoveries (deduplicated)
Notifications — Email + webhook alerts for new findings
Incremental Updates — Next scan only fetches transfers after the last processed block

Use Cases

Stablecoin Monitoring — Detect misuse of USDT/USDC and other stablecoins
Protect Your Token — Catch poisoning attacks targeting your issued token early
Compliance — Monitor suspicious fund movements for specific tokens

Pricing

Plan	Contract Monitor
Free	-
Starter ($4.99/mo)	-
Pro ($19.99/mo)	✓
Enterprise	✓

Setup

Go to Watchlist and click "+ Add Address"
Switch monitor type to "Token Contract"
Select an EVM chain (Ethereum/Polygon/Avalanche)
Enter the token contract address
Click "Add" — automatic detection starts on the regular scan schedule