Justin Smith Information and Communications Technology (ICT) Specialist js *at* ghostofsatoshi *dot* com
Employment
Managing Director | Rusticbison Investments Lda | Portugal 🇵🇹 | 2024 - Chief Technical Officer (CTO) | SIBEX AG | Switzerland 🇨🇭 | 2019 - 2021 Technical Architect | Swisscom Blockchain AG | Switzerland 🇨🇭 | 2018 - 2019 Chief Executive Officer (CEO) | XMR Systems LLC | United States 🇺🇸 | 2017 - 2019 Chief Technical Officer (CTO) | Elea Labs AG | Switzerland 🇨🇭 | 2017 - 2018 Product Manager | Monetas AG | Switzerland 🇨🇭 | 2015 - 2018 DMIS CMM Programmer | John Deere Inc. | United States 🇺🇸 | 2012 - 2015 Chief Technical Officer (CTO) | Irikonji Dive Gear LLC | United States 🇺🇸 | 2012 - 2015 As. Prof. Accounting | University of North Dakota | United States 🇺🇸 | 2012 - 2014 Software Sales | Wolfram Research Inc. | United States 🇺🇸 | 2010 - 2012 Project Engineer | EPC Automotive | United States 🇺🇸 | 2008 - 2010 Operations Supervisor | Caterpillar Inc. | United States 🇺🇸 | 2007 - 2008 Quality Engineer | Caterpillar Inc. | United States 🇺🇸 | 2006 - 2007
References
Professional Reference (SIBEX)
| 2021
Professional Reference (Monetas)
| 2015
Earliest Reference
| 1995
Education
MBA | University of Illinois Urbana-Champaign | United States 🇺🇸 | 2008 - 2010 B.Sc. Integrated Manufacturing Systems | Illinois State University | United States 🇺🇸 | 2004 - 2006
Notable Projects
*Bitcoin Build Preservation - Ensure known good versions of the software run on current OpenBSD *P2P Exchange: - Co-architected/delivered CLI/GUI/API system for remote exchange of Bitcoin and Ethereum without intermediary - Delivered marketing website project on-time/on-budget (Node.js) - Delivered application software on-time/on-budget (Go) *P2P Wallet: - Designed, co-architected, and delivered 1st open source wallet for Monero on iOS - Designed and developed website (solo development X Wallet) *E-commerce Site: - Designed and programmed e-commerce site using PHP/HTML/CSS - Programmed bank credit card, PayPal, and Bitcoin payment methods, user authentication system - Implemented features such as product index, cart management, and order confirmation emails
Modified Bitcoin Builds
bitcoin-v018-openbsd72-bundle.tgz
|
Source
Selected Writings
2023-03-10 Using CLTV Time-Locked, 2/2 Multi-Signature P2SH Bitcoin Contracts in Practice
2021-03-30 Deconstructing The Bitcoin Lending Landscape in 2021: How To Lend Wisely And Avoid Disaster
2023-03-10 Improving OTC: Modeling Non-Deliverable Cryptoasset Perpetual Contracts
2018-01-01 Smartphone Cryptocurrency Wallet Scorecard (Zcon0, Montreal Canada)
Presentations
2019 P2SH multisig time-locked Bitcoin transactions in custody solutions | Crypto Valley Conference, Zug
2019 The Mobile Wallet Tarpit (Slides) | Zcon1, Split
2019 The Mobile Wallet Tarpit (Video) | Zcon1, Split
2019 Network-based Digital Contracting and Rights Transfers | Blockwall, Munich
2019 Using trust-minimization techniques to solve difficult problems in finance | Blockchain Summit, Berlin
2018 Developing X Wallet, A Privacy Focused Mobile Wallet | Zcon0, Montreal (Slides)
2018 Developing X Wallet, A Privacy Focused Mobile Wallet | Zcon0, Montreal (Video)
2018 Developing X Wallet, A Privacy Focused Mobile Wallet | Zcon0, Montreal (Workshop Slides)
2017 Monero: Private Banking 2.0
2016 Cryptofinance | UBS Young Successors Series Summer Seminar, Zurich
Hobbies & Interests
- Violin 2025-10-08 Bach Concerto for Two Violins Movement 1 Violin II (current) 2025-08-10 Vivaldi Concerto in A Minor Movement 3 2025-06-10 Vivaldi Concerto in A Minor Movement 1 2025-03-22 Vivaldi Concerto in G Major Op. 3 No. 3 Movement 2 2025-03-22 Vivaldi Concerto in G Major Op. 3 No. 3 Movement 1 2025-02-04 Rieding Rondo Opus 22 No. 3 - Reading 2025-10-25 The Odyssey 1 2025-10-02 Argonautica, Apollonius Rhodius 2025-06-08 Theogeny, Hesiod 2025-05-19 On Human Worth and Excellence, Manetti 2025-05-15 The Iliad 2 2025-03-22 The Iliad 1 2025-03-22 Epictetus I 2025-03-01 Novum Testamentum Graece - Sport Golf Weightlifting Tennis Skiing - Technology OpenBSD RISC-V Amateur radio (HAM), NF1H 🇺🇸 formerly HB3XRS 🇨🇭 ©2025 Justin Smith
