Hi, I'm Radek.
This is where I share what I learn, read, build, and think.
✨ Building with AI
💼 Developer Advocate, Conversion optimization consultant
❤️ Books, basketball
Follow me on Twitter (@velvet_shark)
Articles
20 most recent articles
- Banana Straightener: AI image generation that actually gets it right
- Why do AI company logos look like buttholes?
- My AI agents journey
- 12 challenges in 12 months. Again.
- SummerIce: A Simple solution for information overload
- EIP-3074 - Pass the AUTH, please!
- ERC-1271 - Now smart contracts can sign transactions too!
- ERC-4337 - It's all about Account Abstraction
- What are Ethereum Standards - EIPs, ERCs, RIPs, CAIPs
- How many time zones are there in the world?
- Solidity Smart Contract Template
- Merkle Trees
- Pushing my limits - What I learned from a year of monthly challenges
- December Challenge: Daily post on Instagram
- How to Become a Crypto Billionaire in 15 Minutes. Legally.
- Consistency
- November Challenge: No coffee
- October Challenge: 7-minute daily hanging
- Max values for each uint in Solidity, from uint8 to uint256
- September Challenge: One hour of learning every day
TIL (Today I Learned)
10 most recent TILs
- TIL: Disable terminal sounds in Cursor
- TIL: How to stop Claude Code from adding itself as co-author and contributor in GitHub
- TIL: Get a sound notification in Claude Code when a task is complete
- TIL: MacOS keyboard shortcut to show hidden files: Command + Shift + .
- TIL: Ponzo illusion
- TIL: Euro banknotes had fictional bridges on them in 2002, when issued. After 10 years, they were not fictional anymore.
- TIL: There is considerable overlap between the intelligence of the smartest bears and the dumbest tourists
- TIL: Cleopatra lived closer to the moon landing than to the Great Pyramid of Giza
- TIL: Most wines will last up to a week or more in the fridge
- TIL: Regular afternoon naps linked to improved cognitive function (but only if less than 30 minutes)
Books
10 most recently read books
- Before They Are Hanged - Joe AbercrombieSep 2025
- The Gate of the Feral Gods - Matt DinnimanAug 2025
- The Blade Itself - Joe AbercrombieJul 2025
- The Dungeon Anarchist's Cookbook - Matt DinnimanJun 2025
- Carl's Doomsday Scenario - Matt DinnimanApr 2025
- Mistborn: The Well of Ascension - Brandon SandersonApr 2025
- Dungeon Crawler Carl - Matt DinnimanMar 2025
- Freedom™ - Daniel SuarezMar 2025
- There Is No Antimemetics Division - qntm, Sam HughesMar 2025
- Mistborn: The Final Empire - Brandon SandersonMar 2025
Featured works
Some of my videos, articles, talks, and other creative endeavours outside of VelvetShark.com
Showing 51 works
- Banana StraightenerSelf-correcting image generation for Gemini's Nano Banana model
- Live Translation - meme generatorGenerate memes with Apple's Live Translation feature. 'What was said' → 'What was actually meant'
- GitPing - never miss an important releaseGet instant notifications when your favorite GitHub repositories release new versions. Stay updated on the tools and libraries you depend on.
- ModelArena.aiCompare AI Models side by side. Get summarized insights.
- TimeSnap: Daily Photo Journal (iPhone app)Mobile app that helps you build a unique visual diary. Just take a photo every day at the same time, e.g. at 3:14 PM, making it your Pi O'Clock app.
- ShhhhAI hackathon project: A storytelling agent that keeps your kid engaged without turning their brain into mush, puts them in a driver's seat of the story and teaches them a valuable lesson.
- quickcast.devYour guide to mastering Foundry's cast command-line tool. Documentation, examples, browser-based execution.
- How to use SummerIce to summarize any article (free Chrome extension)Demo and explanation of a Chrome extension that summarizes articles that I made for myself and then published for everyone to use.
- EIP.directory - your place for all Ethereum proposals: EIPs, ERCs, CAIPs, RIPsLaunch video, demo, and explanation of the project
- EIP.directoryA directory of important, noteworthy, interesting EIPs, with explanations
- Magic MakerFarcaster Frame to create custom fairy tales
- SummerIce ☀️🧊 - Page SummarizerChrome extension to summarize articles in one click
- ApeFitAward-winning ETHGlobal Istanbul hackathon project (team of 5, 3 awards won)
