The one rule that separates a responsible blockchain developer from a careless one. We’ve reached the end of the road, and it splits in two directions. In Part 1, we saw that data on a public blockchain can’t be deleted. In Part 2, we found ways to reduce the harm after something bad is posted….
The comforting half of the story: even permanent data has weak points. In Part 1, we landed on a scary conclusion: some data written to a public blockchain can never be deleted. Not by a court, not by the victim, not by anyone. If that’s where the story ended, blockchain would be a doomsday machine…
Why some data, once written to a blockchain, can never be erased — explained without the jargon. Think about a tattoo. You can regret it. You can cover it with a long sleeve. You can pay a lot of money to fade it. But the ink is in your skin. It doesn’t come out the…
Blockchain for Academic Credentials — Part 3 of 3: The Patterns Across Parts 1 and 2, a theme kept surfacing: most of a credential system runs on digital signatures, and the blockchain only shows up in a few specific places. This final part makes that precise. “Blockchain diploma verification” isn’t one architecture — it’s three,…
Blockchain for Academic Credentials — Part 2 of 3: The Architecture In Part 1 I argued that diploma verification barely needs a blockchain, and that the hard problem is trust, not tampering. Now let’s look at how the system actually works — because once you see the moving parts, you’ll understand exactly where (and whether)…
Blockchain for Academic Credentials — Part 1 of 3: A Reality Check Every few months, someone rediscovers a great startup idea: use blockchain to stop diploma fraud. Credentials get forged, employers can’t easily verify them, and blockchain is tamper-proof — so surely this is a match made in heaven. I thought so too, until I…
The 6-Month Solidity Roadmap for Python Developers This is the final part of the From Python to Web3 series. In Part 1, you built a portfolio project. In Part 2, you decided Solidity was the right next step. This part is the actual learning plan — what to study, in what order, using which resources,…
Solidity or Rust? A Python Developer’s Career Question In Part 1, I walked through a FHIR Consent Vault project as a Python-first entry into healthcare blockchain. If you build it, you’re already employable as a blockchain-adjacent Python developer. But to actually deploy smart contracts to a real blockchain — not just simulate the pattern with…
Build This: A FHIR Consent Vault for Your Healthcare + Blockchain Portfolio If you’re a Python developer thinking about Web3, the hard question isn’t “should I learn Solidity?” It’s “what should I actually build to prove I can do this work?” I’m going to walk you through a specific project that punches well above its…
Solana or Ethereum? A Developer’s Decision Series — Part 4 of 4 Three parts in, we’ve established the terrain. Solana and Ethereum are genuinely different to build on. Ethereum has more freelance volume today, but Solana is growing faster and is less crowded. And the institutions split the map: Ethereum for asset tokenization, Solana for…