I’m Husam Abboud. Med student turned tech entrepreneur building RegistryChain. Learning flute. a Father, 3× 🥇 BJJ Champ. Skydiver, Mixologist, Marathoner..
Education
- MD, Faculty of Medicine. October 6 University 2000 - 2006
- Selected MBA coursework, Insper + FGV - Fundação Getulio Vargas 2016-2017
Employment
- RegsitryChain :: Cofounder
- ABJD :: EV & Automotive OS, Co-Founder
- Establish Brazil :: FDI & Market Entry Management Consultancy, Managing Partner
- Instituto Adus :: Asylum and Refugee Reintegration Institute, Advisory Council Member
- Commonwealth Institute :: Language Center, Director
- PDB Capital :: Crypto VC, Managing Partner
- GenesisBlock :: the blockchain Lab FECAP University, Co-Founder
Hubbies & Impressive accomplishment
- 🥋 3x 🥇 South American Jiu-Jitsu Champion (CBJJE)
- 🪂 Cat-C Professional Skydiver
- 🤿 Advanced Open Water Diver
- 🍹 Mixologist & Bartender (finalist in several intl. cocktail competations.)
- 🏃♂️ Marathon Runner
- 🧘 Yoga Practitioner & TM Sidhi.
- 🍺 Brewer, 🥃 Distiller, and 🍵 Fermentation Specialist
- 🎶 Flute Beginner
..I had my 15 minutes of fame as the perceived ‘villain’ after publishing a research and article on ‘The Realistic Lucrative Case of Ethereum Classic Attack’ ( https://medium.com/@HusamABBOUD/8fa0430a7c25 ). This led to several blockchains, including Bitcoin Gold, MonaCoin, ZenCash, Verge, and Litecoin Cash, being immediately targeted using the theoretical model I proposed. The aftermath saw tens of millions in losses across these networks.
Speaking & events
Upcoming events I’ll be participating in or speaking at — and the past ones.
| Date | Event | Where |
|---|---|---|
| 2026-11-03 | Devcon 8 | Mumbai |
| 2026-06-16 | Claude Community Summit | Forest City |
| 2026-06-10 | SuperAI Singapore | Singapore |
| 2026-05-10 | muShanghai | Shanghai |
| 2026-03-29 | OpenClaw Community Meetup | Forest City |
| 2026-02-13 | Entity Legal Summit II | Hong Kong |
| 2026-02-10 | Consensus HK | Hong Kong |
| 2026-02-08 | Tokenized Capital Summit | Hong Kong |
| 2026-01-22 | Claude Community Summit | Forest City |
| 2026-01-01 | Network School (NS) | Forest City |
| 2025-11-21 | ZK Real World Summit | Buenos Aires |
| 2025-11-20 | Onchain Capital Summit | Buenos Aires |
| 2025-11-17 | Devconnect ARG | Buenos Aires |
| 2025-11-17 | Entity Legal Summit | Buenos Aires |
| 2025-10-18 | Edge City Patagonia | San Martín de los Andes |
| 2025-04-30 | TOKEN2049 Dubai | Dubai |
| 2024-11-12 | Devcon 7 (Devcon SEA) | Bangkok |
| 2024-11-12 | L2con | Bangkok |
| 2024-11-11 | Parallel Society Congress | Bangkok |
| 2024-11 | ZuThailand | Pattaya |
| 2024-10-10 | Edge City Lanna | Chiang Mai |
| 2024-04-18 | OurWorld Day Sampa | São Paulo |
| 2023-12-01 | Startup Society Conference | São Paulo |
| 2022-11-28 | MiamiWeb3 Summit | Miami |
| 2022-10-11 | Devcon 6 | Bogotá |
| 2018-10-30 | Devcon IV | Prague |
| 2018-09-18 | Trademark & Intellectual Property — GenesisBlock Lab | São Paulo |
| 2018-09-11 | Decifrando as Criptomoedas — Teatro FECAP | São Paulo |
| 2018-09-04 | Stablecoins — GenesisBlock Lab | São Paulo |
| 2018-08-21 | Quadratic Voting — GenesisBlock Lab | São Paulo |
| 2018-08-02 | Tokenization Meetup #2 | São Paulo |
| 2018-06-29 | Security Token | São Paulo |
| 2018-05-12 | Consensus 2018 | New York |
| 2018-05-12 | Blockchain Without Borders | New York |
| 2018-05-12 | Block Tank | New York |
| 2018-05-10 | Fluidity Summit | New York |
| 2018-05-09 | Blockchain Week NYC | New York |
| 2018-05-03 | EDCON 2018 | Toronto |
| 2018-04-18 | Blockchain for International Conflict Resolutions — Teatro FECAP | São Paulo |
| 2018-03-28 | Bitcoin 101 | São Paulo |
Media
Youtube: https://www.youtube.com/watch?v=Inp7vd\_FOqU\&list=PLNGeXRd0dDqc-VVA6sa4-UhnV4B4Pc8mL
Press and coverage that has referenced my work.
- Mining Pools and Hard Forks Foreshadow 51% Attacks — CryptoBriefing (Paddy Baker), 2018
- Proof of Work Coins on High Alert Following Spate of 51% Attacks — Bitcoin.com (Kai Sedgwick), 2018
- It’s Now Cheaper to Bankrupt Crypto Networks — Investopedia, 2018
- Ethereum Classic 51% Attack Would Cost Just $55 Mln, Result in $1 Bln Profit — Cointelegraph, 2018
- Immutability in Doubt: Do We Need to Protect Blockchain Data? — Cointelegraph, 2018
- You Can Successfully Hack a $2B Cryptocurrency Network with Only $1.5M — The Next Web, 2018
- Nghiên cứu: Tấn công 51% với 55 triệu đô la, mang lại lợi nhuận 1 tỷ đô la — CafeBitcoin, 2018
- Syrian Helps Foreigners Open Businesses in Brazil — ANBA, 2017
- Why Make It Simple? — The Economist, 2012