Don Hartig

Tech | Crypto | Cybersecurity


Mobile / Whatsapp: (+86)15902385400

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Crypto, Blockchain, DeFi, FinTech

My background as a Blockchain systems architect & engineer *This is a snapshot of the original website I designed and developed under the domain "" (no longer active).


1. The Benefits of Market Making (GSR)
2. Understanding Cryptocurrency Volatility (GSR)
3. What is an NFT? (Coinformant)
4. How to Make an NFT (Coinformant)
5. How to Buy NFTs (Coinformant)
6. How to Sell an NFT (Coinformant)
7. Where Do You Store an NFT? (Coinformant)
8. Why Does NFT Art Have Value? (Coinformant)
9. Will Ethereum Go Up in Value Because of NFTs? (Coinformant)
10. Best NFT Marketplaces (Coinformant)
11. How Do NFT Marketplaces Make Money? (Coinformant)
12. Ensuring That Your Tokenized Asset Offering Is Legal (Blockchain Advocates - Landing Page)
ARCHIVED WEBSITE: Link to the "Silubium" (丝路币) Blockchain + Crypto Project developed by Don Hartig (aka "Ryker Freegeld")


My backround as a Cybersecurity & Blockchain Systems Architect & Engineer


1. What to Do After a Data Breach (Clario, US)
2. Personal Data Under the GDPR (e-Boks, EU)
3. What Does the GDPR Mean For Data Collection? (e-Boks, EU)
4. 7 Tips to Boost Your Website Speed in China (GoClick China, Singapore)
5. October Cybersecurity Awareness Month: Tips to Keep Safe While Online (San Diego Cybersecurity, US)

Coded by Don Hartig