Carel de Jager
Carel de Jager is an engineer with a passion for Bitcoin, Cryptography, and Energy. Since 2016, he has trained developers, corporates, and governments globally on the benefits and use cases of Bitcoin. In 2019, he shifted his focus to product development, leading to his current role as CEO of SilverSixpence, where he spearheads the development of innovative blockchain accounting solutions. He also serves as CTO of Bitmach, a leading commercial Bitcoin mining company in South Africa.
Twitter: @sovereignCarel
Nostr: npub1ulwhxph47zu9zfgqautk4q25rkym8d6wyuh50f6kg26zaftc0c7qw9q5v0
Sessions
Blockchain Surveillance & Privacy
Bitcoin is a public ledger. That transparency enables self-custody and auditability, but it also creates real privacy pitfalls once you reuse addresses, merge coins, or interact with custodians.
In this talk I’ll explain what “blockchain analytics” can and cannot infer from on-chain data, why common heuristics produce false positives, and what practical habits reduce unnecessary data leakage. I’ll also explain how Sixpence structures full-node data into accounting-grade reporting.
Goal: help Bitcoiners protect themselves, and help businesses/regulators avoid decisions based on bad data.