Lost in blockchain,but loving every minute of it😊
Joined November 2024
- Tweets 427
- Following 78
- Followers 61
- Likes 1,355
98 Photos and videos
Prince Barney | Blockchain Engineer ⚙️ retweeted
Jun 10
Learning how to write Unit tests yourself without heavily depending on AI is one of the best ways to scale up... I just found a bug now and AI initially dismissed the issue as intended behavior...lol
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Prince Barney | Blockchain Engineer ⚙️ retweeted
Jun 11
This is a business logic flaw, not a code bug. The entire premise of "store a secret on-chain" is broken.
→ `private` does not mean secret
→ `internal` does not mean hidden
→ If it's on-chain, it's readable by everyone
⚠️ Never store passwords, API keys, or sensitive data in contract storage.
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Prince Barney | Blockchain Engineer ⚙️ retweeted
Jun 11
The `private` keyword in Solidity doesn't mean what you think it means.
Marking a variable as `private` only restricts other contracts from reading it. Anyone can still read it directly from the blockchain.
This misunderstanding has led to real security vulnerabilities. 🧵
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✅Day 145 Mastering Blockchain💯
Continuation: Section 2 Full Stack Web3 Crash Course
Learned about Viem clients:
•Public Client
•Wallet Client
•Test Client
Also worked on sending contract tx(s) setup from the frontend
Didn't show up perfectly today,but I showed up⚒️
🙂
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✅Day 144 of Mastering Blockchain💯
Started Section 2 of the Full Stack Web3 Crash Course
Built a simple HTML page & connected MetaMask using window.ethereum
used:
-viem's Client; walletClient
Also organized invariant tests into fail-on-revert & continue-on-revert setups
😃
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✅Day 143 Mastering Blockchain💯
Finished Section 1 of Full Stack Web3 Crash Course.
Reviewed:
•Async programming
•HTML/CSS/JS on the course
•WSL workflow
First time using VS Code Go Live to render a README in the browser. Pretty cool😛
Small steps.Consistent progress⚒️
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✅Day 142 Mastering Blockchain💯
Began Web3 Frontend Crash Course today🫡
Reviewed WSL,Linux environment setup,& VS Code integration.Strong foundations make everything else easier😃
Often progress isn't building features—it's reinforcing fundamentals🙂
Ready for tomorrow💪
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✅Day 141 Mastering Blockchain 💯
Finished the Solidity Smart Contract Development course on Cyfrin Updraft😝
Next up:Web3 frontend crash course🚀
I will revisit my past crowdfunding project with new invariant testing knowledge(fail/revert handling)
New knowledge > ego🙂
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✅Day 140 Mastering Blockchain💯
Spent few hours updating obsolete drivers but progress is progress🙂
Built Price Feed Handler: BarneyStableCoin
Lesson:
Handlers need flexibility to explore more protocol states & uncover hidden bugs
Reviewed:
.Tx type 1(0x0)-EIP 2929 & 2930
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✅ Day 138 of Mastering Blockchain 💯
Worked on invariant test handlers for my BarneyStableCoin:
-redeemCollateral handler
-mintBSC handler
Big lesson:
Always prank external calls in handlers. Miss it, and tests fail for reasons that aren't immediately obvious.
Thread🧵👇
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Chainlink Data Streams:
•off-Chain aggregation -> Data Decentralized Oracle Networks (DONs).
•DON-signed reports sent to Data Streams Aggregator Networks.(off-Chain).
•on-chain verification before consumption by Chainlink Verifier Contract.
Makes Financial tools work better💪
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Still building.
Today was light—mostly reviewing my BarneyStableCoin code and regaining momentum after a few off days.
Not every day is heavy development. Some days are just reset clarity.
Back tomorrow with deeper work.
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✅Day 137 Mastering Blockchain💯
Learned the difference between:
•Stateless fuzzing
•Stateful fuzzing(invariant tests)
Chainlink Data Streams:
•DONs aggregate data off-chain
•cheaper faster retrieval
•optimized for high-frequency markets
Airdrop contract review DONE💪
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✅Day 136 Mastering Blockchain💯
Unit tests for BarneyStableCoin engine DONE!
Revisited signature mechanics:
•r, s, v components
•vm.sign in Foundry tests
cast wallet sign for signing messages
Reviewed how airdrops use signatures incentives to drive protocol adoption
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✅Day 135 Mastering Blockchain💯
Built the liquidation logic for my BarneyStableCoin protocol.
Had to refactor collateral redemption into layered internal/public functions to support liquidation flow correctly
Big lesson today:
stablecoins survive on collateral health
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Day 134 Mastering Blockchain💯
BarneyStableCoin logic:
•burnBSC
•redeemCollateral(tricky)
•redeemBSCForCollateral(still refactoring flow)
nascentxyz audit repo review→audit-ready contracts readiness(devs)
Chainlink VRF:
•rollDice randomness contract
.Nailed VRF quiz✅
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Started to aggregate ZK resources I personally used for learning. There's a lot of "awesome ZK" repos, but some of them are lists of lists of lists. If you know anything worth adding, issue a PR or send me a carrier pigeon with a link
github.com/0xluk3/ZK-resourc…
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✅Day 133 Mastering Blockchain💯
Learnt:
IF YOU DON'T LEARN & IMPLEMENT FAST YOU WILL FAIL.
AI will rapidly outpace you if you don’t adapt.
Think In Systems.
Be creative.
Implement.
Understand Logic.
Shine.
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✅Day 132 of Mastering Blockchain💯
Completed Chainlink Functions module
Built & funded a Functions subscription to:
•manage & fund requests
•track executions
Fetched live weather data via JavaScript & delivered it onChain
final quiz ✅
Contracts reach beyond blockchain🙂
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