Media & speaking.
Crypto expert for talks, panels, podcasts and press. I speak and comment on crypto scams, blockchain tracing, wallet recovery, and crypto in the courts, across Australia and New Zealand.
Talks and video
Forgot your passphrase? Here's what actually happens.
A walkthrough of how a forgotten-passphrase wallet recovery is really run: building a candidate list from what the owner remembers, then testing it at scale on GPU hardware.
Podcast, community and industry
NZ On-Chain Podcast
Co-host of the NZ On-Chain Podcast, covering crypto and blockchain in New Zealand.
Cryptocurrency NZ
Co-founder of Cryptocurrency NZ, one of Aotearoa's largest crypto education platforms, and a speaker at its meetups.
Blockchain Forum NZ
Executive Council Member of Blockchain Forum NZ, New Zealand's blockchain and digital assets industry association.
Blockchain NZ Awards
Startup of the Year 2025 at the Blockchain NZ Awards.
CryptoCon
A live demonstration of forgotten-passphrase wallet recovery, shown above.
Courts
Expert evidence on crypto in the NZ High Court, the ACT Supreme Court and Family Courts in Australia and New Zealand.
What I talk about
- Crypto scams: how they work and how to spot them
- Pig butchering and investment platform scams
- Recovery scams that target victims a second time
- How blockchain tracing actually works
- Hidden crypto in divorce and property settlements
- Crypto as evidence in criminal trials
- Recovering lost wallets and forgotten passwords
- Passing on crypto when someone dies
- Why tracing software is priced out of reach, and building your own
- Keeping crypto safe: custody, hardware wallets and inheritance
For journalists
Nicolas Turnbull is a cryptocurrency expert witness and blockchain forensics specialist based in Christchurch, New Zealand. He traces crypto for scam victims, lawyers and courts across Australia and New Zealand, and co-founded Crypto Consulting NZ, Crypto Consulting AU, Crypto Consulting USA and Cryptocurrency NZ.
Nicolas Turnbull is a blockchain forensics specialist, cryptocurrency expert witness and wallet recovery specialist based in Ōtautahi Christchurch. He has given expert evidence on cryptocurrency in the New Zealand High Court, the ACT Supreme Court, and Family Courts in Australia and New Zealand, and has worked on more than 300 client engagements. He is co-founder of Crypto Consulting NZ, Crypto Consulting AU, Crypto Consulting USA and Cryptocurrency NZ, an Executive Council Member of Blockchain Forum NZ, and co-host of the NZ On-Chain Podcast.
I can comment on crypto scams, tracing, hidden assets, crypto crime and court cases involving digital assets. Send your deadline and I'll tell you straight away whether I can help. I won't comment on matters I'm instructed in.
Use the form below or email [email protected] with your deadline.