Bitcoin addresses placed under U.S. Treasury sanctions still hold 9,306 bitcoin, data showed.

CoinPost, a blockchain media outlet, reported on Sunday that Alex Thorn (알렉스 손), head of research at U.S. crypto research firm Galaxy Digital, on Friday released cumulative data on bitcoin addresses registered on the U.S. Treasury Office of Foreign Assets Control’s Specially Designated Nationals list.

The tally covers 518 bitcoin addresses that the United States has officially designated as sanction targets. The addresses have received a total of 249,814 bitcoin and sent 239,708 bitcoin out. The difference of 9,306 bitcoin remains in the addresses, with a value put at about $707 million.

Thorn said the United States has designated a total of 518 bitcoin addresses as sanction targets so far. The figures show that even if much of the funds flowing to sanctioned addresses has moved, some amounts still remain on-chain.

OFAC adds crypto addresses to the SDN list to effectively block sanctioned entities from using and cashing out bitcoin. U.S. financial institutions and crypto exchanges cannot transact with addresses on the SDN list, and major U.S. exchanges also manage those addresses as screening targets.

But the decentralized structure of blockchains makes it difficult to fully freeze assets technically. The remaining bitcoin stays traceable on-chain. It means that even if sanctions function as legal and institutional blocking tools, the assets themselves do not disappear from the network.

Such designations have accumulated against North Korean hacking groups or Russian-linked exchanges. The U.S. Treasury has also recently sanctioned 6 individuals and 2 companies for involvement in illegal activities by North Korean IT workers and has added crypto addresses, including bitcoin, to the SDN list.

The data are meaningful in that they confirm in figures the scale of funds remaining in sanctioned addresses. Even under sanctions, some assets can remain without being moved, and how to handle them is also intertwined with international anti-money laundering discussions. How to manage balances and transfer paths for sanctioned addresses is therefore drawing attention as an indicator of future regulatory trends.