Marcus Helder
VerifiedBlockchain Forensics Lead, ex-Chainalysis
Eight years tracing illicit crypto flows for law enforcement and private clients. Specializes in cross-chain analysis and mixer demixing.
Recent answers
How can I recover stolen crypto that was withdrawn from my Binance account?
Someone gained access to my Binance account through a SIM swap and withdrew 0.8 BTC to an external wallet. What can I actually do at this point?
Can I recover crypto I accidentally sent to the wrong address?
I sent 1,200 USDT to a wallet I copied from old chat history. The wallet doesn't belong to my friend anymore. Is there any way to get it back?
How long does USDT tracing actually take?
Multiple recovery companies are quoting me different timelines — anywhere from 2 days to 6 months. What's realistic for a TRC-20 USDT trace?
What is blockchain forensics and how does it actually work?
I keep hearing about blockchain forensics during my recovery process. What does it actually involve?
How do I trace stolen Bitcoin step by step?
I want to understand what tracing actually involves before I hire anyone. Can someone walk through the steps?
I got scammed by a Telegram investment group — what now?
I joined a 'signals' group, they had a 'manager' guide me, and I deposited $14,000 into their platform. Now I can't withdraw and they ask for more.
I got scammed by an 'online girlfriend' into sending Bitcoin — can I recover anything?
Over four months I sent about $42,000 in Bitcoin to someone I thought I was in a relationship with. Now they're gone. I'm devastated.
What is 'chain hopping' and why does it complicate crypto recovery?
I keep reading that scammers 'chain hop'. What does that mean and what can be done about it?