SIH26183 Universal Cross-Chain Risk Model
A structure-based global LightGBM model for cryptocurrency transaction-flow risk triage.
Supported chains
- Bitcoin
- Ethereum
- Solana
Model architecture
Normalized blockchain transactions → directed flow graph → 12 universal structural features → StandardScaler → LightGBM → risk probability
Universal features
[ "tx_count", "unique_counterparties", "in_tx_count", "out_tx_count", "in_degree", "out_degree", "total_degree", "degree_ratio", "is_source", "is_sink", "mean_successor_out_degree", "mean_predecessor_in_degree", "pagerank", "active_span", "mean_event_time", "event_time_std", "recent_activity_age", "log_in_volume", "log_out_volume", "log_total_volume", "in_out_value_ratio", "inflow_concentration", "outflow_concentration" ]
Threshold
0.45545454545454545
Important limitation
This model provides an analytical triage signal.
It does NOT independently establish:
- criminal liability
- wallet ownership
- VASP attribution
- intent
- legal guilt
Blockchain evidence and investigator review remain authoritative.
Input
The inference service expects normalized transaction relationships following the CommonTransaction structure.
Output
The service returns:
- ML probability
- threshold decision
- risk level
- risk points
- graph statistics
- per-node scores
Intended use
Investigation-support and research purposes.