Bitcoin vs Ethereum: Key Differences and Investment Risks

Bitcoin (BTC) and ether (ETH) are the two largest cryptocurrencies by market value.¹ Both are digital assets you can buy, hold and send without a bank in the middle, so it’s easy to think of them as two versions of the same thing. They aren’t. They were built for different purposes and work in different ways, and those differences shape what you’re actually buying and the risks that come with it.

Three differences help explain the comparison:

• Purpose. Bitcoin was designed as digital money. Ethereum was designed as a platform for running programs, with ether paying for their use.^2, 3
• Supply. Bitcoin’s supply is capped at 21 million coins. Ether has no cap.^4, 5
• Risk. Both are volatile and exposed to custody risks. Their designs introduce different security, staking and technology risks.

The starting point is what each coin is used for.

What are you buying when you buy bitcoin or ether?

Bitcoin was designed as digital cash. Its white paper, published under the name Satoshi Nakamoto, describes “a purely peer-to-peer version of electronic cash” that lets payments move “without going through a financial institution.”² Its fixed supply is also central to the store-of-value case made by supporters.

Ethereum, which went live on July 30, 2015, extends the idea to applications.⁶ Smart contracts are programs that run on the network and let developers create digital assets and services. Users pay transaction fees in ether.³ Bitcoin’s investment case emphasizes its monetary rules; ether also has a direct role in paying for activity on Ethereum.

How are transactions checked and protected?

Neither network relies on a bank to approve transactions. Bitcoin uses proof of work: miners spend electricity and specialized computing power to add blocks of transactions. They receive newly issued bitcoin and transaction fees in return.²

Ethereum switched to proof of stake on September 15, 2022, in an event called the Merge. Ethereum.org estimates that the change reduced the network’s energy use by about 99.95%.⁷ Validators now commit ether as collateral to help confirm transactions. Running a solo validator requires at least 32 ETH.⁸

Proof of stake relies on collateral and financial penalties rather than energy-intensive mining. Validators that sign conflicting blocks can lose part of their stake, a penalty called slashing. Going offline also incurs penalties.⁸ Both systems make attacks costly, but neither is immune. The computing power or stake needed depends on the attack; controlling a majority is not a prerequisite for every kind.^2, 9

Does a supply limit make a coin more valuable?

Bitcoin’s supply rules limit how many coins can exist. They do not guarantee what buyers will pay for them. Miners initially received 50 new BTC per block. That new-coin reward halves every 210,000 blocks, roughly every four years. The April 2024 halving reduced it to 3.125 BTC; the next is expected in 2028, when it falls to 1.5625 BTC.¹⁰

The schedule approaches a maximum of 21 million coins, with issuance expected to end around 2140.⁴ Scheduled issuance reached 20 million in March 2026.¹¹ As the new-coin reward declines, transaction fees become more important to miners’ revenue.²

Ether’s supply works differently. New ether rewards validators, while part of transaction fees is destroyed, or “burned.” Issuance depends on how much ether is staked; burning depends on fees paid. Validator penalties also reduce supply. Supply can therefore grow or shrink, and fee burning does not guarantee a decline.⁵

From January 1 through a November 13, 2026 snapshot, Ethereum issued about 901,500 ETH and burned about 19,450 through fees. After penalties and other destruction, supply grew by about 880,100 ETH. Fee burning offset roughly 2.2% of new issuance.¹²

Annualizing that period’s net growth gives roughly 0.8%. Bitcoin’s current issuance, about 450 coins a day on average, is also roughly 0.8% a year relative to its mined supply. These are approximate calculations, not forecasts. Bitcoin’s fixed rule specifies new coins per block; ether’s net growth changes with issuance, fees and penalties.^10, 11, 12

What do regulation and taxes mean for holders?

Both coins are accessible through United States (US) spot exchange-traded products: bitcoin products began trading in January 2024 and ether products in July 2024.^13, 14 Investors own product shares rather than holding coins directly. Regulatory approval of those shares is not an endorsement of the underlying investment.¹⁵

The Securities and Exchange Commission’s (SEC) March 2026 interpretation lists bitcoin and ether as digital commodities. It applies existing securities laws and may be revisited; it does not mean every transaction or product involving either coin is exempt from those laws.¹⁶

For US taxes, the Internal Revenue Service (IRS) treats digital assets as property. Covered brokers report gross proceeds for transactions from 2025, with basis reporting for certain transactions from 2026. The first 2025 Forms 1099-DA were reported in 2026.¹⁷ Staking rewards are generally income at their fair market value when the holder gains control and can dispose of them.¹⁸

Staking earns more ether, with additional risks

Staking lets ether holders help secure Ethereum and earn rewards. Bitcoin does not use staking to secure its own network. Products marketed as bitcoin staking or yield use separate arrangements, such as lending or securing other networks, with their own risks.^2, 19

Ether holders can run a validator, use a service or exchange, or join a pool. Some pools offer liquid staking: a token representing the staked ether and associated rewards. These routes overlap, and their risks differ. Validators face slashing and offline penalties; services add reliance on the operator, while liquid staking adds risks in the software behind the token.⁸

Access to the money also matters. Withdrawing the underlying stake can involve an exit queue. A liquid staking token may be sold sooner, but its price and market liquidity can affect the amount received. Rewards are paid in ether, so a falling coin price can outweigh the additional coins earned.⁸

The SEC’s March 2026 interpretation concludes that the protocol, custodial and liquid staking activities it describes do not involve securities offerings. That conclusion depends on the activities and conditions described; it does not cover every product called staking.¹⁶

Where can investors lose money?

Price swings are the most visible risk. Despite their different designs, both coins fell sharply between October 6, 2025 and November 11, 2026. The table below uses the same Coinbase daily series for both dates, making the comparison consistent.^20, 21, 22

Custody creates another risk. Coins held by an exchange or other third party depend on that party’s security and operations. Holding the coins yourself puts responsibility for lost or stolen keys on you, and blockchain transfers generally cannot be reversed. The Federal Bureau of Investigation (FBI) attributed the theft of more than $6 billion from Binance in October 2026 to North Korean actors.²³ Theft from an exchange is a different issue from an attack on the underlying network.

Software changes introduce risks too. In November 2026, Ethereum developers delayed the Glamsterdam upgrade process while investigating changes that could break existing applications.²⁴ Staking or using applications adds exposures that simply holding ether does not automatically create.

Concentration also needs context. Strategy held 848,250 BTC on October 11, 2026, about 4% of mined bitcoin.²⁵ Ether staked through Lido represented 21.18% of Ethereum’s staking market at June 30, according to Lido, including deposits awaiting activation.²⁶ The first figure measures ownership; the second concerns staking. Owning bitcoin does not confer the same role in validating transactions that staked ether can.

How the differences affect holders

The comparison below brings the main differences together. The supply and security rows describe how the networks operate; the staking and access rows show how holders can participate. The price row describes one historical period, not a permanent ranking of risk.

Sources: network documentation, regulators, exchange notices and Coinbase data. Price declines are approximate Wealthion calculations.^{2, 3, 7, 8, 10, 4, 5, 13, 14, 20, 21, 22}

Bitcoin’s supply cap does not put a floor under its price. Ether’s role in Ethereum does not guarantee that greater network use will produce gains for holders. Even staking can leave someone with more coins worth fewer dollars.

Their designs still matter. They determine how new coins enter circulation, how transactions are secured and which additional risks come with staking or using applications. But the holder’s result also depends on the price paid, subsequent demand and how the asset is held. Understanding the network explains part of the investment. It does not settle the outcome.

Sources & Disclosure

¹ All Cryptocurrencies. CoinGecko, observed November 13, 2026; bitcoin and ether ranked first and second by market capitalization. ² Bitcoin: A Peer-to-Peer Electronic Cash System. Satoshi Nakamoto, 2008; payment purpose, proof of work and miner incentives. ³ What is Ethereum? ethereum.org, accessed November 13, 2026; applications, smart contracts and ether. ⁴ Frequently Asked Questions. bitcoin.org, accessed November 13, 2026; 21 million supply limit and gradual issuance. ⁵ How The Merge impacted ETH supply. ethereum.org, accessed November 13, 2026; validator issuance, fee burning and penalties. ⁶ Ethereum Launches. Ethereum Foundation, July 30, 2015. ⁷ The Merge. ethereum.org, accessed November 13, 2026; September 15, 2022 transition and estimated energy reduction. ⁸ Ethereum staking: How does it work? ethereum.org, accessed November 13, 2026; validator minimum, penalties, staking routes and withdrawals. ⁹ Ethereum proof-of-stake attack and defense. ethereum.org, accessed November 13, 2026; attack types and stake-dependent thresholds. ¹⁰ Bitcoin Halving. bitcoin.org, accessed November 13, 2026; new-coin rewards, halving history and estimated 2028 halving. ¹¹ Bitcoin Block 939999. Blockchain.com Explorer; block timestamp March 9, 2026. Scheduled subsidy totals reach 20 million BTC at this height. ¹² Ethereum Supply retained ledger and methodology. ethsupply.fyi, January 1 to November 13, 2026, snapshot at 17:34 UTC; issuance, fee burns, penalties and net change. Ratios and annualized growth are Wealthion calculations. ¹³ Grayscale Bitcoin Trust Regulatory Bulletin RB-24-009. NYSE, January 11, 2024; commencement of exchange trading. ¹⁴ Grayscale Ethereum Trust Regulatory Bulletin RB-24-119. NYSE, July 23, 2024; commencement of exchange trading. ¹⁵ Statement on the Approval of Spot Bitcoin Exchange-Traded Products. SEC Chair Gary Gensler, January 10, 2024. ¹⁶ Application of the Federal Securities Laws to Certain Types of Crypto Assets and Certain Transactions Involving Crypto Assets. SEC Releases 33-11412 and 34-105020, issued March 17, 2026; classifications and specified staking activities. ¹⁷ Digital assets. Internal Revenue Service, accessed November 13, 2026; property treatment and Form 1099-DA transaction-year requirements. ¹⁸ Revenue Ruling 2023-14. Internal Revenue Service, 2023; staking rewards included in income when the taxpayer gains dominion and control. ¹⁹ Bitcoin Staking Overview. Babylon developer documentation, accessed November 13, 2026; bitcoin committed to secure other networks. ²⁰ Coinbase Bitcoin (CBBTCUSD). Federal Reserve Bank of St. Louis, Coinbase data; November 11, 2026, 5 p.m. Pacific observation. ²¹ Coinbase Ethereum (CBETHUSD). Federal Reserve Bank of St. Louis, Coinbase data; November 11, 2026, 5 p.m. Pacific observation. ²² Coinbase Cryptocurrencies, October 6, 2025. ALFRED, Federal Reserve Bank of St. Louis; bitcoin $124,839.51 and ether $4,693.19. Price declines to November 11, 2026 are Wealthion calculations using the same daily series. ²³ North Korea Responsible for $6 Billion+ Binance Attack. Federal Bureau of Investigation, October 31, 2026; theft on or about October 29. ²⁴ EIP-8037/EIP-8038 Glamsterdam. Ethereum Foundation, November 6, 2026, updated November 9; upgrade delay and review of effects on existing contracts. ²⁵ Strategy Inc. Form 8-K, Exhibit 99.1. SEC EDGAR, October 12, 2026; 848,250 BTC held as of October 11. ²⁶ GOOSE-2026 & EGGs-2026 H1 Report. Lido, six months ended June 30, 2026; 21.18% staking-market share, including the entry queue.

Wealthion is a dba of Greylock Peak Investments, a registered investment adviser. This article is general information only. It is not investment advice or an offer or solicitation, and it is not tailored to your circumstances. Guests’ views are their own and may not reflect those of Wealthion. Wealthion has not verified guest statements, including any performance figures. Investing involves risk, including loss of principal, and past performance does not guarantee future results. Wealthion refers readers to other registered investment advisers and shares in the fees they receive from referred clients, which creates a conflict of interest. Please see our Form ADV Part 2A and consult your own financial advisor before investing.