How Ethereum Classic and Bitcoin Cash Were Created

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In the world of blockchain and cryptocurrencies, few events have sparked as much debate and transformation as hard forks. These pivotal moments not only reshape networks but also reflect the philosophical divides within decentralized communities. Two of the most prominent examples—Ethereum Classic (ETC) and Bitcoin Cash (BCH)—emerged from intense disagreements over how blockchains should evolve. This article explores their origins, the core issues behind their creation, and what they represent in the broader crypto ecosystem.

The DAO Incident and the Birth of Ethereum Classic

The story of Ethereum Classic begins in 2016 with The DAO (Decentralized Autonomous Organization), a groundbreaking crowdfunding project built on the Ethereum network. Launched in May 2016, The DAO quickly raised over $160 million worth of ETH, making it one of the largest crowdfunding campaigns in history.

However, just weeks after launch, a critical vulnerability in its smart contract code was exploited by a hacker. Approximately $50 million worth of ETH was siphoned out into a child DAO controlled by the attacker.

👉 Discover how blockchain networks handle security breaches and community disputes.

Faced with massive financial losses and growing pressure from investors, the Ethereum Foundation proposed a controversial solution: a hard fork to reverse the transactions and return the stolen funds. After extensive community debate, a majority voted in favor of the fork.

On July 20, 2016, the Ethereum blockchain split into two separate chains:

Supporters of Ethereum Classic argue that blockchain should remain immutable and censorship-resistant, regardless of circumstances. They believe that altering history—even to correct theft—undermines the foundational values of decentralization.

Thus, ETC became a symbol of ideological purity in blockchain philosophy: code is law.

Bitcoin Cash: A Response to Scaling Challenges

While Ethereum’s split stemmed from a security crisis, Bitcoin Cash (BCH) was born out of a long-standing debate about scalability.

As Bitcoin gained popularity, its 1MB block size limit began causing slow transaction times and rising fees. By 2017, users were waiting hours—and sometimes paying high fees—for simple transfers.

Two main solutions emerged:

  1. SegWit (Segregated Witness) – A soft fork that increases effective block capacity by separating signature data from transaction data.
  2. Larger blocks – A hard fork approach to directly increase block size for more transactions per block.

The Bitcoin community was divided. While core developers and many wallet providers supported SegWit, others—including mining giant Bitmain—believed larger blocks were necessary for true peer-to-peer electronic cash.

In response to the User Activated Soft Fork (UASF) movement pushing for SegWit adoption without miner consensus, Bitmain and other proponents announced User Activated Hard Fork (UAHF) as a countermeasure.

On August 1, 2017, at block height 478558, Bitcoin Cash officially split from the Bitcoin blockchain. The new chain launched with an 8MB block size limit, later increased to 32MB, aiming to enable faster and cheaper transactions.

Bitcoin Cash positioned itself as “the true Bitcoin,” emphasizing Satoshi Nakamoto’s original vision of a decentralized digital currency usable for everyday payments.

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Understanding Hard Forks: When Communities Disagree

Both Ethereum Classic and Bitcoin Cash are products of hard forks—permanent divergences in a blockchain’s protocol that create two separate chains.

Hard forks occur when there's no consensus on proposed upgrades. Unlike soft forks, which are backward-compatible, hard forks require all participants to upgrade their software. Those who don’t upgrade end up on a different chain.

There are generally two types of hard forks:

These splits often reflect fundamental disagreements over:

Other Notable Forks After ETC and BCH

Following these high-profile splits, several other cryptocurrencies underwent hard forks:

These examples highlight how blockchain communities use hard forks not only to innovate but also to enforce ideological boundaries.

Frequently Asked Questions

What caused the Ethereum Classic split?

The Ethereum Classic split occurred after the DAO hack in 2016. To recover stolen funds, Ethereum implemented a hard fork that reversed transactions. A faction opposed this change on principle, believing blockchain should be immutable, and continued mining the original chain—now known as Ethereum Classic.

Why did Bitcoin Cash split from Bitcoin?

Bitcoin Cash split from Bitcoin due to disagreements over scalability. Proponents wanted larger block sizes to reduce fees and increase transaction speed. When core developers favored SegWit instead, BCH supporters initiated a hard fork to create a chain with bigger blocks.

Is Ethereum Classic still active today?

Yes, Ethereum Classic remains active with its own development team, miners, and ecosystem. It follows a strict philosophy of immutability and has been adopted by some as a "censorship-resistant" alternative to ETH.

Can anyone create a fork of a cryptocurrency?

Technically, yes—anyone can copy open-source code and launch a fork. However, gaining community support, miners, exchanges, and long-term sustainability is extremely challenging without strong use cases or backing.

Are hard forks good or bad for blockchain?

Hard forks can be both beneficial and risky. They allow innovation and community choice but can lead to confusion, reduced security (due to split hash power), and market fragmentation if not well-coordinated.

How do users receive coins after a fork?

If you held ETH before the 2016 fork, you automatically owned both ETH and ETC. Similarly, BTC holders before August 2017 received BCH. Users must control their private keys to claim forked coins—those stored on exchanges may or may not be credited depending on platform policy.

The Legacy of Crypto Splits

The emergence of Ethereum Classic and Bitcoin Cash underscores a vital truth in decentralized systems: governance is messy. Without central authorities, upgrades require social consensus—which is often difficult to achieve.

Yet these splits also demonstrate the resilience and adaptability of blockchain technology. Instead of stagnation, disagreement leads to innovation and choice.

Whether viewed as necessary evolution or avoidable fragmentation, hard forks like ETC and BCH have expanded the cryptocurrency landscape, offering users alternatives based on different technical and philosophical foundations.

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As blockchain continues to mature, understanding these historical forks helps investors, developers, and enthusiasts navigate the complex—and ever-evolving—world of digital currencies.