Bitcoin, Ethereum: how blockchains differ

Not all blockchains are created equal. Bitcoin and Ethereum may be the two most recognisable names in crypto, but they serve very different purposes. Despite launching as a medium of exchange, many investors compare bitcoin (BTC) to digital gold, and it has also become popular as a corporate treasury asset. In contrast, Ethereum provides the infrastructure unleashing a wave of innovation that’s disrupting various legacy industries, particularly financial services. This article expands on these differences and explains why you investors could consider exposure to both assets when building a diversified digital-asset allocation. 

Why they were created

To begin our comparison, let’s go back to crypto’s early days, in the wake of the 2008 financial crisis. Satoshi Nakamoto, whose real identity remains a mystery to this day, published a whitepaper outlining a peer-to-peer payment system called Bitcoin that removed the need for intermediaries from transactions.

One of the biggest challenges facing a decentralised currency was the ‘double spend’ problem. Many forms of digital content are easy to duplicate, for instance copying and pasting a Word document. So Satoshi needed a mechanism to prevent people from spending the same coins twice, a role traditionally played by central authorities such as banks. The solution was a decentralised ledger, known as a blockchain. This technology is fully transparent- the entire history of every BTC transaction is publicly viewable- so nobody gets away with double-spending.

Satoshi processed the first transaction in early 2009, but a young Russian developer named Vitalik Buterin believed that the potential for blockchain technology went far beyond a medium of exchange. In 2015, he cofounded Ethereum, which introduced the concept of smart contracts, programmes that automatically execute when preconditions are met (a bit like a vending machine). Smart contracts paved the way for a new generation of decentralised applications (dApps), which so far have caused the greatest disruption in finance by offering permissionless access to a range of services including lending, borrowing and trading. As of October 2025, users have poured $168B into decentralised finance (DeFi) apps.

To sum up, BTC is digital cash, while Ethereum is a ‘world computer’ in the words of Vitalik who, like Satoshi, is famous enough in the crypto sphere to go by one name. As he told the audience at Devcon 2024, it’s ‘an incredibly large and diverse on-chain economy, and an incredibly large and diverse global community’.

How they work: consensus and technology

We’ve already mentioned that blockchains replace the need for a central authority, so now let’s briefly explore the differences between the consensus mechanisms used by Bitcoin and Ethereum to ensure their entire networks agree on the record of transactions and all participants follow the rules.  

Bitcoin uses proof of work (PoW), which requires participants, known as miners, to solve complex mathematical problems for the right to process the next batch of transactions. In return, they receive ‘block’ rewards in the form of freshly minted BTC, the primary way new coins enter circulation.

Ethereum started off using PoW before switching to proof of stake (PoS) in 2022, an event the crypto community nicknamed ‘the Merge’. PoS requires participants called validators to deposit or ‘stake’ ether, Ethereum’s native token, in a smart contract, and the network then randomly chooses which validator gets to process transactions. Dishonest behaviour is punished by the confiscation of staked funds.

PoW gets a lot of criticism about the amount of computer power needed to solve these puzzles- more than Thailand’s annual energy consumption, according to the University of Cambridge (as of October 2025). That said, various initiatives have emerged to diversify miners’ energy sources. PoS is much more environmentally friendly- the Merge reduced Ethereum’s power usage by 99.95%.

Monetary policy, use cases, applications

Bitcoin and Ethereum’s monetary policies also differ, which has implications for their use cases.

Bitcoin has a hard cap of 21 million coins—95% are already circulating. This scarcity is enforced through "halvings" every four years, where miner rewards are cut in half, making new BTC progressively harder to obtain.

The network preserves this scarcity by halving the block rewards paid to miners roughly every four years. The crypto community nicknamed these events ‘the halvings’, and they’re highly anticipated due to the historical impact on price (although past performance doesn’t guarantee future results).  

Ethereum takes a different approach. While it has no supply cap, it implements a "burn" mechanism that permanently destroys ETH with every transaction. Since the 2021 upgrade (EIP-1559) for the technically inclined, a portion of each transaction fee is removed from circulation forever.  

The result? Bitcoin's scarcity is absolute and programmed. Ethereum's scarcity is dynamic and demand-driven.

In terms of use cases, Ethereum underpins a broad and measurable digital economy: stablecoin transfers that routinely exceed hundreds of billions of dollars per month, decentralised exchanges that generate significant fee revenue, and a growing base of on-chain applications across tokenisation of real-world assets, financial services (lending, borrowing) and payments. These activities have generated significant gas fees to date.

Institutional adoption

Institutional investors such as asset managers and pension funds have been a major catalyst for Bitcoin. They’ve embraced it to a greater degree than ETH due to Bitcoin’s longevity and superior liquidity.

The approval of spot bitcoin ETFs by the US Securities and Exchange Commission (SEC) in early 2024 was a significant milestone for the crypto industry. Funds have flowed into these products since: assets under management (AUM) total $176B as of October 2025, illustrating the pent-up demand for crypto exposure.

Corporations are also using BTC to diversify their reserves, led by Strategy, a publicly listed software developer turned BTC treasury company that has acquired over 640K BTC (as of October 2025). For now, the rest of the top ten firms by holdings operate in the crypto industry in some capacity (such as miners), although Tesla also holds a significant amount of bitcoin.  

However, Ethereum is catching up. The SEC approved spot ether ETFs in the summer of 2024 ($25B AUM as of October 2025), but the biggest institutional opportunities for Ethereum come in the form of RWA tokenisation (which according to some estimates, for instance McKinsey and BCG, could be worth up to $16T by 2030) and stablecoins (total transfer volume of $33T in the 12 months to October 2025, according to RWA.xyz). Ethereum dominates both of these use cases, accounting for more than half of the overall value of tokenised RWAs and supply of stablecoins. 

“Just as mutual funds first emerged in 1924 and exchange-traded funds (ETFs) reshaped investing in the 2000s, blockchain technology could underpin a new generation of financial vehicles,” according to a Bank of America report about tokenised RWAs published in September 2025.

Bitcoin and Ethereum: complementary, not opponents

Besides being digital ledgers and broadly perceived as “crypto,” Bitcoin and Ethereum have almost nothing in common. This is also why their tokens function as complementary assets. Bitcoin is unique because, unlike every other cryptocurrency, its creator remains anonymous. This anonymity requires stakeholders to rely on social consensus to enforce its rules and implement any protocol changes.

Ethereum, by contrast, has identifiable founders, most notably Vitalik Buterin, as well as others like Joseph Lubin (CEO of ConsenSys) and the Ethereum Foundation, who continue to play meaningful roles in its development.

Despite these differences, both networks offer exposure to distinct sources of value within the crypto ecosystem: BTC as a form of digital value, and ETH as the programmable infrastructure for digital finance. BTC may have a head start in institutional adoption, but Ethereum’s innovative use cases are helping it close the gap.

Just as investors diversify equity holdings across sectors and regions, some allocate to both assets to gain exposure to different parts of the digital-asset ecosystem.