https://careldejager.com/speaking/#writingEssays and publications by Carel de Jagerenhttps://www.linkedin.com/pulse/you-cant-jail-agent-carel-de-jager-r4z6fhttps://www.linkedin.com/pulse/you-cant-jail-agent-carel-de-jager-r4z6fWhy the checks we do on people will not work on software that pays for things.2026-07-23https://link.springer.com/book/10.1007/978-981-95-5775-2https://link.springer.com/book/10.1007/978-981-95-5775-2The foreword, not the book. Evidence rather than trust as the basis for assurance.2026-01-23https://sixpence.io/blog/blockchain-forensics-evolutionhttps://sixpence.io/blog/blockchain-forensics-evolutionClustering, transaction graphs, behaviour, cross-chain tracking, mixers and privacy coins.2024-11-18https://sixpence.io/blog/know-your-transactions-compliancehttps://sixpence.io/blog/know-your-transactions-complianceWatching transactions in real time instead of filing a customer form once.2024-11-05https://sixpence.io/blog/comprehensive-kyt-api-designhttps://sixpence.io/blog/comprehensive-kyt-api-designA layered, vendor-neutral design for compliance APIs.2024-10-02https://www.coinbase.com/blog/proof-of-reserves-granthttps://www.coinbase.com/blog/proof-of-reserves-grantAnnouncing the open-source proof-of-reserves work Coinbase funded.2023-11-09https://careldj.medium.comhttps://careldj.medium.comOn algorithms, feeds and the comfort of being agreed with.2021-07-06https://careldj.medium.com/what-is-decentralised-finance-28149370a6d8https://careldj.medium.com/what-is-decentralised-finance-28149370a6d8DeFi explained from first principles, written when it was still new.2020-08-24https://globalcrypto.tv/the-original-proof-of-work-egyptian-pyramids/https://globalcrypto.tv/the-original-proof-of-work-egyptian-pyramids/Unforgeable, energy-dense construction as the ancestor of bitcoin's consensus.2019-12https://www.linkedin.com/pulse/my-experience-world-youth-forum-2019-carel-de-jagerhttps://www.linkedin.com/pulse/my-experience-world-youth-forum-2019-carel-de-jagerSeven thousand delegates in Sharm El Sheikh, and a post office analogy.2020-01https://careldj.medium.com/bitcoin-mining-as-a-revenue-increasing-mechanism-for-eskom-407cd134b648https://careldj.medium.com/bitcoin-mining-as-a-revenue-increasing-mechanism-for-eskom-407cd134b648The essay that became Bitmach. Interruptible mining on power nobody was buying.2018-09-25https://careldj.medium.com/a-review-of-the-power-requirements-for-a-bitcoin-majority-attack-119f2b6901e7https://careldj.medium.com/a-review-of-the-power-requirements-for-a-bitcoin-majority-attack-119f2b6901e7What a 51 percent attack would actually cost in electricity.2018-07-06https://dspace.nwu.ac.za/handle/10394/19185https://dspace.nwu.ac.za/handle/10394/19185My master's dissertation. Forty-eight engineers and a questionnaire.2015