For a long time, critics accused cryptocurrency of being the financing tool of choice for bad actors who assumed the blockchain’s complexity would keep their nefarious activities hidden. Indonesia just offered a direct rebuttal to that misconception.
Blockchain analytics firm TRM Labs revealed on Monday that onchain evidence was central to securing the conviction of three individuals for terrorism financing in Indonesia in 2024 and 2025, marking what the firm described as a clear shift in the way courts value blockchain data as legal evidence.
“Indonesian courts have demonstrated that cryptocurrency evidence, wallet addresses, transaction histories, on-chain flows, is not only admissible but can anchor a terrorism financing prosecution,” TRM said in a statement.
That’s not a small thing. Courts accepting blockchain data as the foundation of a prosecution, but the anchor suggests the evidentiary status of onchain intelligence has moved into new territory, at least in Southeast Asia.
How the cases unfolded
Indonesian authorities, working alongside PPATK, Indonesia’s financial intelligence unit, identified and convicted all three individuals for financing terrorism through cryptocurrency between 2024 and 2025. Each case involved transferring funds to overseas networks, including fundraising campaigns linked to Syria.
The clearest example involved Tether’s USDT. Authorities traced one defendant sending more than $49,000 worth of USDt across 15 transactions from a local exchange to a foreign platform, with the funds later routed to an ISIS-linked terrorism fundraising campaign in Syria. The transaction trail, wallet to wallet, exchange to exchange, ultimately landing in a designated terrorism financing network, was mapped using blockchain analytics and presented in court.
Indonesia’s counterterrorism police unit, Densus 88, carried out the analysis alongside the country’s financial intelligence team and presented the findings to Indonesian courts, which accepted the blockchain data as key evidence in each of the three cases.
What makes the technical side of this worth noting is that the money didn’t move in one clean transfer. Fifteen separate transactions, split across platforms, routed through a foreign exchange before reaching its final destination.
The kind of layering that, in traditional finance, might take months to untangle across multiple correspondent banking relationships. Here, the blockchain did a lot of the legwork, every transaction permanently timestamped and publicly verifiable.
TRM observed that terrorism financing networks have preferred cryptocurrency precisely because many institutions and regulators were slow to treat it with the same rigor as traditional financial channels. But that is now changing. The Indonesia cases appear to be evidence of that shift landing in actual courtrooms.
A regional pattern taking shape
Indonesia isn’t operating in isolation on this. TRM noted similar patterns emerging across Southeast Asia, where governments are investing in blockchain intelligence capabilities and enhancing collaboration between public and private sectors to address illicit finance risks. Singapore and Malaysia’s financial intelligence units and law enforcement agencies are also building the technical capacity to trace cryptocurrency flows.
Since joining the Financial Action Task Force in 2023, Indonesia has continued to identify terrorism financing as a national risk, including fundraising campaigns using cryptocurrency. Separately, Indonesia’s financial services regulator, OJK, took over supervision of crypto platforms from Bappebti in 2024, bringing virtual asset service providers under the same anti-money laundering and counter-terrorism financing obligations as traditional financial institutions.
Suspicious transaction reporting for crypto platforms is now mandatory under local regulation. That regulatory backdrop means the convictions were likely the beginning of a more systematic approach.
The regional momentum also came into sharp focus recently when Cambodian and Chinese officials captured Li Xiong, a leader of the Huione Group, an organization linked to scam centers in Cambodia that carried out pig butchering frauds and investment schemes to steal crypto from victims globally.
Xiong was extradited to China to face fraud and money laundering charges. His capture came just three months after the arrest of Chen Zhi, head of the Prince Group that operates Huione Group.
The broader numbers from TRM underscore why this enforcement push matters. Adjusted total incoming illicit cryptocurrency activity rose to approximately $158 billion in 2025, the highest level observed in the past five years, and a sharp increase from $64.5 billion in 2024, reversing a multi-year decline.
Stablecoins in particular saw illicit entities receive around $141 billion through stablecoin wallets in 2025, as the asset class exceeded $1 trillion in monthly transaction volume multiple times throughout the year.
The Indonesia terrorism financing cases sit within that larger, troubling picture. But they also represent something the raw numbers can’t fully capture, which is the moment when a court looks at a trail of wallet addresses and transaction histories and says, yes, this is enough to send someone to prison.
That’s a meaningful development for how law enforcement, judges, and prosecutors think about crypto evidence, and it’s one that bad actors who still believe the blockchain offers cover should probably take note of.