Blog — page 13
Technical writing on Web3, AI, Bitcoin, and building software. Written by Uvin Vindula.
150 articles
Bitcoin Mining Explained: How New Bitcoin Gets Created
How does new Bitcoin come into existence? Bitcoin mining is the process that creates new coins, confirms transactions, and secures the entire network — without any bank or government involved. Uvin Vindula, founder of uvin.lk and Bitcoin educator based in Sri Lanka and the UK, explains mining from scratch: hash functions, proof of work, difficulty adjustment, block rewards, and the halving. No hardware specs, no profitability calculators — just the mechanism itself, explained so clearly that anyone can understand it.
What Is DeFi? Decentralized Finance Explained Simply
What is DeFi? Decentralized Finance lets you lend, borrow, trade, and earn interest — without banks, without brokers, without anyone's permission. Uvin Vindula, founder of uvin.lk, Bitcoin educator, and Web3 engineer, explains DeFi in plain language for people who have never used it. This guide covers how traditional finance works, how DeFi replaces it, lending without a bank, trading without an exchange, earning yield, the real risks nobody talks about, and what DeFi means for Sri Lanka — written by someone who went from using DeFi to building it.
How to Store Bitcoin Safely: A Non-Technical Guide for 2026
Most people who lose Bitcoin do not lose it to hackers. They lose it to themselves — forgotten passwords, lost seed phrases, phones that broke, exchanges that collapsed. Uvin Vindula breaks down Bitcoin storage in plain language for anyone, especially Sri Lankans dealing with currency instability who cannot afford to lose what they have saved. This is not a hardware wallet review. It is a genuine, practical security guide written for people with zero technical background.
What Is a Blockchain? Explained for Complete Beginners
What is a blockchain? A blockchain is a shared digital record book that no single person or company controls. Every entry is linked to the one before it, making it nearly impossible to change the past without everyone noticing. Uvin Vindula, founder of uvin.lk and Bitcoin educator with over 10,000 learners across Sri Lanka and the UK, explains blockchain technology in plain language — using everyday analogies like shared ledgers and chains of blocks — for people with absolutely zero technical background. This is not about investing. This is about understanding the technology.
The 2022 Sri Lanka Economic Crisis: A Bitcoin Lesson in Real Time
In 2022, Sri Lanka's economy collapsed. The rupee lost over 70% of its value against the dollar. Fuel queues stretched for miles. Banks imposed withdrawal limits. Savings evaporated overnight. Uvin Vindula lived through every day of it — watching his country's money fail in real time while Bitcoin stayed Bitcoin. This is not financial advice and not a victory lap. It is an honest account of what happened, what the numbers show, and what the crisis taught one Sri Lankan engineer about money, sovereignty, and why he started teaching Bitcoin to his own people.
What Is Bitcoin? Explained Simply for Non-Technical People
What is Bitcoin? Bitcoin is digital money that works without banks or governments. There will only ever be 21 million Bitcoin — no one can print more, no one can freeze your account, and no one can stop you from sending it to anyone in the world. Uvin Vindula, founder of uvin.lk and author of The Rise of Bitcoin, explains Bitcoin in plain language for people with zero technical background. This guide covers how Bitcoin was created, how it works, the 21 million cap, how to buy and store it safely, what Bitcoin is NOT, and why a Bitcoin educator in Sri Lanka started teaching this after the 2022 economic crisis wiped out 70% of the rupee's value.