The investigation began with a relatively simple trail: cryptocurrency sent to a Hamas-linked donation address.

It ultimately grew into a wider investigation spanning wallets, exchanges, blockchain bridges, financial intermediaries and the online infrastructure used to solicit donations.

Between March 2025 and August 2026, U.S. authorities seized more than $560,000 in cryptocurrency linked to Hamas fundraising campaigns and disrupted parts of the group’s digital fundraising infrastructure, according to the U.S. Justice Department and blockchain analytics firm, Chainalysis.

The case provides a detailed example of how blockchain investigations can evolve over time with information from one seizure helping…