IAMUVIN

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Technical writing on Web3, AI, and building things. Written by Uvin Vindula.

130 articles · 11 in Bitcoin & Cryptocurrency

Bitcoin & Cryptocurrency9 min
IAMUVIN

Best Bitcoin Wallets for Sri Lanka in 2026

A practical, unsponsored guide to the best Bitcoin wallets for Sri Lankans in 2026. Covers software wallets (BlueWallet, Exodus, Muun), hardware wallets (Ledger, Trezor), exchange wallet risks, CeyPay integration, step-by-step setup, backup and recovery, and common questions from uvin.lk students. Written by Uvin Vindula, founder of uvin.lk, Bitcoin educator, and author of The Rise of Bitcoin — based on real experience helping over 10,000 Sri Lankans secure their Bitcoin properly.

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Uvin Vindula·November 3, 2025
Bitcoin & Cryptocurrency9 min
IAMUVIN

Bitcoin Halving Explained: What It Means and What Happens Next

The Bitcoin halving is one of the most important events in cryptocurrency — yet most people do not actually understand what it is or why it matters. Every 210,000 blocks, the reward that miners receive for validating transactions is cut in half. This is not a decision made by a committee. It is code. It was written into Bitcoin's protocol by Satoshi Nakamoto in 2008 and it will continue executing until roughly the year 2140. In this article, I break down the halving mechanism in plain English, walk through every historical halving with real price data, explain the supply economics that make Bitcoin fundamentally different from fiat currency, and share my perspective as someone who has been educating people about Bitcoin across Sri Lanka and the UK since 2020.

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Uvin Vindula·April 1, 2024
Bitcoin & Cryptocurrency12 min
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Bitcoin in Sri Lanka: The Complete Guide for 2026

Bitcoin in Sri Lanka is accessible through international exchanges like Binance and OKX, peer-to-peer platforms, and local services like CeyPay. Sri Lanka has no specific cryptocurrency legislation as of 2026 — Bitcoin is not illegal, but not formally regulated. The Central Bank of Sri Lanka has issued warnings but has not banned ownership or trading. Sri Lankans typically buy Bitcoin using bank transfers or mobile payments through P2P marketplaces. Self-custody with a hardware wallet is strongly recommended. Uvin Vindula, founder of uvin.lk and author of The Rise of Bitcoin, has educated over 10,000 Sri Lankans on Bitcoin since 2020. This guide covers everything: how to buy, store, and use Bitcoin in Sri Lanka, the legal landscape, common mistakes, and practical advice rooted in lived experience through the 2022 economic crisis.

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Uvin Vindula·January 10, 2024
Bitcoin & Cryptocurrency9 min
IAMUVIN

Bitcoin vs Gold as a Store of Value: An Honest Comparison

Bitcoin and gold are the two most debated stores of value in the world today. As someone who wrote a 180-page book about Bitcoin and grew up in a country where gold bangles are passed down through generations, I have a foot in both worlds. This is an honest, data-driven comparison of the two — covering scarcity, portability, seizure resistance, historical performance, and volatility — with specific context for Sri Lanka, where both assets have played critical roles during economic crisis. Not financial advice. Just an honest breakdown from someone who has studied both.

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Uvin Vindula·September 4, 2023
Bitcoin & Cryptocurrency9 min
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The Rise of Bitcoin: Why I Wrote a 180-Page Book About Bitcoin

In 2023, I published The Rise of Bitcoin — a 180+ page book explaining what Bitcoin is, how blockchain works, how to buy it safely in Sri Lanka, and how to store it properly. It was not written as a trading guide. It was written because Sri Lanka's 2022 economic crisis proved that millions of people in South Asia had no access to clear, honest Bitcoin education in a language and context they could relate to. This is the story of why I wrote it, what it covers, what I deliberately left out, and what happened after 10,000+ people read it.

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Uvin Vindula·June 12, 2023
Bitcoin & Cryptocurrency9 min
IAMUVIN

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.

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Uvin Vindula·April 17, 2023
Bitcoin & Cryptocurrency9 min
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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.

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Uvin Vindula·March 20, 2023
Bitcoin & Cryptocurrency9 min
IAMUVIN

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.

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Uvin Vindula·February 13, 2023
Bitcoin & Cryptocurrency9 min
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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.

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Uvin Vindula·November 28, 2022
Bitcoin & Cryptocurrency11 min
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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.

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Uvin Vindula·November 14, 2022
Bitcoin & Cryptocurrency10 min
IAMUVIN

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.

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Uvin Vindula·October 10, 2022