Bitcoin
- Alex Biryukov, Dmitry Khovratovich, Ivan Pustogarov, "Deanonymisation of clients in Bitcoin P2P network", ACM CCS 2014, Arizona, USA (early version in archive, revised paper)
Informal description of the Bitcoin deanonymization attack.
- Alex Biryukov, Ivan Pustogarov, "Proof-of-Work as Anonymous Micropayment: Rewarding a Tor Relay", Financial Cryptography 2015, Puerto-Rico, USA. ( paper)
Press release on secure, anonymous, easy way to pay for online content
- Alex Biryukov, Ivan Pustogarov, "Bitcoin over Tor isn't a good idea", IEEE Security and Privacy Symposium 2015, ( paper, slides)
See also our work on memory-hard proofs of work, like Argon2.