EPISODE 106 — What Is a Hard Fork — When Blockchains Split

On August 1, 2017, the Bitcoin blockchain permanently divided into two chains. Every person who held Bitcoin at that moment suddenly held the same amount of Bitcoin and Bitcoin Cash simultaneously — their keys worked on both chains, both tokens had real market value, and years of bitter community debate had finally ended in a permanent split. In 2026, Bitcoin faces another potential fork — and for the first time, the question of what happens to forked coins involves not just individual holders but BlackRock, Fidelity, MicroStrategy, and the regulated custodians holding millions of Bitcoin for institutional clients.

In this episode of Crypto for Beginners, we explain what a hard fork is and everything it implies. We cover the technical mechanics: what it means for blockchain software rules to be incompatible, how nodes on different versions end up maintaining separate chains, and what determines which chain survives long-term — primarily which version attracts miners or validators, exchange listings, and developer support. We explain the crucial difference between hard forks and soft forks: what backward compatibility means and why SegWit could be implemented without splitting Bitcoin while the block size increase could not.

We tell the full story of the Bitcoin Cash fork: the scaling debate, the two camps, the August 2017 split, and what happened to both chains in the years that followed. We then cover the Ethereum Classic fork — a fundamentally different kind of split driven by philosophical values about immutability rather than technical disagreement — and what the choice to reverse the DAO hack revealed. We cover the planned 2026 Bitcoin eCash fork in full: what Drivechains are, why Paul Sztorc is forcing the issue through a competing chain rather than the upgrade process, and what the implications are for ETF sponsors, corporate Bitcoin treasuries, and individual holders during crypto's most institutionalised era.

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EPISODE 104 — What Is a Crypto Airdrop — and How Do You Qualify?

In November 2024, Hyperliquid distributed over $2.5 billion in HYPE tokens to users who had simply used the trading platform. Some wallets received tokens worth $10,000. Some received $50,000. Some early power users received hundreds of thousands of dollars — for using a platform they were already using because they found it useful. The Arbitrum airdrop in March 2023 distributed billions more across hundreds of thousands of wallets. The Uniswap airdrop in 2020 gave every historical user 400 UNI tokens. These are not lottery wins. They are systematic rewards for early adoption — and understanding how to position for them is one of the most consistently asymmetric opportunities in crypto.

In this episode of Crypto for Beginners, we explain exactly how crypto airdrops work and how to approach them intelligently. We cover all four main types: retroactive airdrops that reward historical on-chain behaviour without requiring any advance action; holder airdrops distributed to people who own specific tokens at a snapshot date; task-based airdrops that require social media actions; and points-based systems where ongoing protocol usage accumulates toward a future token event. We explain how to identify protocols likely to conduct future airdrops — the combination of significant user activity, no existing token, and backing from major venture funds.

We explain the most effective positioning strategy: genuine, consistent usage of protocols you find useful, which naturally builds the on-chain history that makes you look like a legitimate user to any future snapshot algorithm. We cover sybil filtering — how sophisticated algorithms detect wallets faking activity across dozens of addresses — and why genuine usage is both more effective and more ethical than wallet farming. We spend significant time on airdrop scams: fake claim websites, malicious wallet approval transactions, and phishing messages that steal millions from participants every year. We explain the tax implications of receiving airdropped tokens in most jurisdictions.

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