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Chainalysis Uses Blockchain Data to Anticipate Overdose Waves and Map Illicit Crypto in 2025
On February 19, 2026, Chainalysis outlined how on‑chain cryptocurrency flows linked to darknet markets and fentanyl precursor suppliers can anticipate overdose trends by three to six months. The firm reported that darknet market inflows neared $2.6 billion in 2025, while mid‑2023 saw a sharp drop in payments to fentanyl precursor suppliers that aligned with declining opioid deaths in the U.S. and Canada. Larger crypto transfers above $500 also showed a strong relationship with stimulant‑related hospitalizations in Canada, underscoring blockchain’s dual role as both a facilitator of illicit activity and a tool for public health forecasting and law enforcement.