Ethereum is a decentralised blockchain network and software platform that allows people to transfer digital assets and run applications through smart contracts. Its native cryptocurrency is called Ether (ETH).
While Bitcoin was primarily designed as a decentralised digital-money network, Ethereum was built as a programmable blockchain. Developers can deploy smart contracts on Ethereum and use them to create decentralised applications (dApps), tokens, financial services, games, marketplaces and other blockchain-based systems.
Ethereum was launched in July 2015 and has since developed into a broad ecosystem supporting cryptocurrencies, stablecoins, NFTs, decentralised finance (DeFi), gaming and other applications.
The simplest way to understand Ethereum is:
User → Wallet → Transaction → Smart Contract or Transfer → Validator → Block → Ethereum Blockchain
What Is Ethereum?
Ethereum is a decentralised, public blockchain network that acts somewhat like a shared computer distributed across thousands of independent computers.
The network maintains a shared record of accounts, balances, transactions and smart-contract data. Participants use Ethereum’s consensus mechanism to agree on changes to this shared state.
Ethereum has three closely related meanings:
- Ethereum network – the decentralised blockchain infrastructure.
- Ethereum blockchain – the public ledger recording transactions and state changes.
- Ether (ETH) – the native cryptocurrency used within the network.
Therefore, Ethereum and ETH are not technically the same thing.
Ethereum at a Glance
| Feature | Ethereum |
| Network | Ethereum |
| Native cryptocurrency | Ether (ETH) |
| Launched | July 2015 |
| Creator | Vitalik Buterin and early contributors |
| Type | Decentralised programmable blockchain |
| Consensus | Proof of Stake |
| Smart contracts | Yes |
| Native asset | ETH |
| Main execution environment | Ethereum Virtual Machine (EVM) |
| Transaction fee | Gas fee, paid in ETH |
| Major uses | dApps, DeFi, NFTs, tokens, payments and digital assets |
| Validator requirement | 32 ETH for a solo validator |
| Previous consensus | Proof of Work |
| Current consensus | Proof of Stake |
Who Created Ethereum?
Ethereum was proposed by Vitalik Buterin and developed with a group of early contributors.
The Ethereum network officially launched in July 2015.
Unlike a traditional company-owned software platform, Ethereum is an open-source blockchain ecosystem. Developers, node operators, validators, researchers and other participants contribute to its ongoing development and operation.
What Is Ether (ETH)?
Ether, commonly represented by the symbol ETH, is Ethereum’s native cryptocurrency.
ETH has several important functions within the network.
It can be:
- Sent from one Ethereum account to another
- Used to pay transaction fees
- Used when interacting with smart contracts
- Staked to help secure Ethereum
- Held as a digital asset
- Used within applications built on Ethereum
Ethereum’s official documentation describes ETH as the native cryptocurrency of the network and as an asset used to pay for computation on Ethereum.
Ethereum vs ETH
This distinction is important for beginners.
Ethereum = blockchain network and programmable platform.
ETH = cryptocurrency that powers the Ethereum network.
A simple comparison is:
Ethereum is the network; ETH is the native asset used within that network.
What Makes Ethereum Different From Bitcoin?
Bitcoin and Ethereum are both blockchain networks, but they were designed with different primary purposes.
Bitcoin focuses mainly on decentralised digital money and value transfer.
Ethereum provides a programmable environment where developers can deploy software called smart contracts.
| Feature | Bitcoin | Ethereum |
| Primary focus | Digital money/value transfer | Programmable blockchain |
| Native asset | BTC | ETH |
| Consensus | Proof of Work | Proof of Stake |
| Smart contracts | Limited scripting | Core feature |
| Validators/miners | Miners | Validators |
| Applications | Primarily monetary | dApps, DeFi, NFTs, tokens and more |
| Supply design | 21 million BTC maximum | No fixed maximum supply |
| Transaction fees | Bitcoin network fees | Ethereum gas fees |
The comparison is simplified, because both networks have evolved and support more functionality than their original core use cases.
How Does Ethereum Work?
Ethereum works by combining several components:
- Accounts
- Transactions
- Smart contracts
- Ethereum Virtual Machine
- Nodes
- Validators
- Proof of Stake
- Blocks
- Gas fees
- Blockchain state
These components work together to process transactions and update Ethereum’s shared state.
- Ethereum Accounts
Ethereum uses accounts to represent entities that can hold ETH and interact with the network.
There are two broad types:
Externally Owned Accounts
An Externally Owned Account (EOA) is controlled using a private key.
A person generally uses a wallet to manage the private key and sign transactions.
For example, if Rahul wants to send ETH to Priya, Rahul’s wallet can create and sign the transaction using the key controlling his account.
Contract Accounts
A contract account is controlled by smart-contract code rather than directly by a private key.
Smart contracts contain code and data and reside at blockchain addresses. Users interact with them by sending transactions that call their functions.
- Ethereum Wallet
An Ethereum wallet is software or hardware that allows users to manage their accounts and interact with Ethereum.
A wallet can allow users to:
- Hold ETH
- Send ETH
- Receive ETH
- Connect to dApps
- Sign transactions
- Interact with smart contracts
- Manage tokens
The wallet does not function like a physical purse containing coins.
Instead, it provides access to cryptographic keys that allow users to control blockchain accounts and authorise transactions.
- Private Keys
A private key is secret cryptographic information used to sign transactions.
In simple terms:
Private key = authority to control an account
If a user loses the private key or recovery information for a self-custodied wallet, access to the associated assets may be permanently lost.
Users should therefore never share their private keys or recovery phrases with another person.
- Ethereum Transactions
An Ethereum transaction is a signed request submitted to the network.
A basic ETH transfer can involve:
- The sender enters the recipient’s address.
- The sender enters the amount of ETH.
- The wallet prepares the transaction.
- The transaction is digitally signed.
- The transaction is broadcast to the network.
- An execution client checks its validity.
- The transaction enters the network’s pending transaction pool.
- A validator includes it in a block.
- Other validators check the block.
- The Ethereum state is updated.
Ethereum’s technical documentation describes transactions as requests for computation that can change the state of the Ethereum Virtual Machine and blockchain.
- What Is a Smart Contract?
A smart contract is a computer program deployed on the Ethereum blockchain.
It contains code and data and executes according to its programmed rules when users or other contracts interact with it.
For example, a smart contract could be programmed to:
- Exchange one token for another
- Hold funds under specified conditions
- Issue digital tokens
- Record ownership of a digital asset
- Operate a decentralised lending application
- Run a blockchain-based game
Smart contracts are one of Ethereum’s most important differences from Bitcoin.
Simple Smart Contract Example
Imagine a vending machine.
You select an item, provide the required payment and the machine follows its programmed rules to deliver the item.
A smart contract works on a similar principle:
Input + programmed conditions → automated blockchain execution
However, real smart contracts can be much more complex than this simple example.
- What Is the Ethereum Virtual Machine?
The Ethereum Virtual Machine (EVM) is the execution environment at the centre of Ethereum’s programmable functionality.
It can be thought of as a shared computational environment whose state is agreed upon by Ethereum’s network participants.
When a user calls a smart contract, the requested computation is executed according to Ethereum’s rules, resulting in changes to the network’s state.
This makes Ethereum more than simply a ledger for cryptocurrency transfers.
It is also a platform for executing decentralised software.
- What Are Ethereum Nodes?
A node is a computer participating in the Ethereum network.
Nodes help:
- Store blockchain data
- Receive and broadcast transactions
- Execute transactions
- Verify blocks
- Maintain network state
- Communicate with other participants
Ethereum’s network consists of thousands of independent computers operating around the world.
- What Are Ethereum Validators?
Ethereum currently uses Proof of Stake (PoS) rather than mining-based Proof of Work.
Validators participate in the consensus process by staking ETH and operating validator software.
They help:
- Propose blocks when selected
- Check proposed blocks
- Attest to valid blocks
- Maintain consensus
- Secure the network
Validators that act dishonestly can face penalties, including the potential loss of some or all of their staked ETH in certain circumstances.
What Is Proof of Stake?
Proof of Stake is Ethereum’s current consensus mechanism.
Instead of using energy-intensive mining competition, Ethereum uses validators who put ETH at risk as collateral.
The economic idea is straightforward:
Honest behaviour → potential rewards
Certain dishonest behaviour → penalties or loss of staked ETH
Ethereum switched from Proof of Work to Proof of Stake in September 2022.
How Ethereum Proof of Stake Works
Ethereum divides time into 12-second slots.
A validator is randomly selected to propose a block for each slot, while other validators participate in committees and attest to the validity of blocks.
Validators re-execute transactions and check that the proposed changes to Ethereum’s state are valid.
The simplified process is:
Transaction → Execution → Block proposal → Validator attestations → Consensus → Blockchain update
How Much ETH Is Needed to Become a Validator?
A user who wants to operate a standard Ethereum validator directly needs to deposit 32 ETH into the staking deposit contract and operate the required validator software.
However, owning 32 ETH is not necessary merely to hold ETH or to participate through every form of staking service.
Staking pools and other arrangements can allow participation with smaller amounts, although these introduce additional technical, smart-contract, operator or counterparty risks depending on the arrangement.
What Is Ethereum Staking?
Staking means committing ETH to help secure Ethereum’s Proof-of-Stake network.
A validator uses staked ETH as collateral.
In return for performing required duties correctly, validators can receive ETH-denominated rewards. Validators can also face penalties for certain failures or dishonest behaviour.
Staking should not be confused with simply holding ETH.
Holding ETH: You own the asset.
Staking ETH: You participate, directly or indirectly, in Ethereum’s Proof-of-Stake security mechanism.
What Is Gas in Ethereum?
Ethereum transactions require computational resources.
The fee paid for using those resources is commonly called the gas fee.
Gas measures the computational work required by an operation.
For example, a simple ETH transfer generally requires less computation than interacting with a complex smart contract.
The amount of gas required therefore depends on the operation being performed.
Ethereum Gas Fee Explained
A simplified way to understand Ethereum fees is:
Total fee = Gas used × Gas price
Under Ethereum’s current fee mechanism, the base fee is burned while an optional priority fee, or tip, is paid to the validator for including the transaction.
This means that Ethereum users need ETH not only to transfer ETH but also to interact with many applications and smart contracts.
What Is ETH Burning?
Ethereum’s fee mechanism includes the burning of the base fee.
Burning means the ETH is permanently removed from circulation rather than being transferred to another user.
Consequently, Ethereum’s supply can increase or decrease depending on issuance to validators and the amount of ETH burned through transaction activity.
On periods of high network activity, the amount burned can potentially exceed new issuance.
Therefore, unlike Bitcoin’s fixed 21-million maximum supply, Ethereum does not operate with a fixed maximum supply cap.
What Are Ethereum Blocks?
Ethereum transactions are grouped into blocks.
Blocks are linked sequentially, with each block referring to its parent block.
Ethereum’s current Proof-of-Stake design targets a block slot every 12 seconds.
A simplified structure looks like:
Block 1 → Block 2 → Block 3 → Block 4 → Block 5
Each new block can contain transactions and state changes resulting from those transactions.
What Is Ethereum’s Blockchain State?
Ethereum does more than record individual transfers.
It maintains a broader state containing information such as:
- Account balances
- Contract code
- Contract data
- Account-related information
- Other information required to determine the current state of the network
When transactions execute, they can change this state.
For example, if a user sends ETH to another account, one balance decreases and another increases.
If a user interacts with a token smart contract, the contract’s recorded state may also change.
Example: Sending ETH
Suppose Rahul wants to send 0.1 ETH to Priya.
Step 1: Priya provides her address
Priya gives Rahul her Ethereum receiving address.
Step 2: Rahul enters the transaction
Rahul enters the address and specifies 0.1 ETH.
Step 3: The wallet signs the transaction
Rahul’s wallet uses the relevant private key to authorise the transaction.
Step 4: The transaction is broadcast
The signed transaction is submitted to the Ethereum network.
Step 5: The transaction waits for inclusion
The transaction can enter the pending transaction pool.
Step 6: A validator proposes a block
A selected validator includes the transaction in a proposed block.
Step 7: Other validators verify it
Other validators check the proposed block and its transactions.
Step 8: Ethereum’s state changes
Once the transaction is accepted into the canonical chain, Rahul’s and Priya’s account balances are updated.
This is the basic process behind an ETH transfer.
Example: Using a Smart Contract
Suppose Rahul wants to swap one Ethereum-based token for another using a decentralised exchange.
The process can look like this:
- Rahul connects his wallet to the dApp.
- He selects the tokens and amount.
- The dApp creates a transaction request.
- Rahul reviews and signs the transaction.
- The transaction is broadcast to Ethereum.
- A validator includes it in a block.
- The relevant smart contract executes.
- Token balances are updated according to the contract’s rules.
The important point is that Ethereum is executing programmed instructions, not simply recording a payment.
What Are dApps?
dApp means decentralised application.
A dApp generally uses blockchain-based smart contracts for some of its functionality.
Examples of Ethereum-based application categories include:
- Decentralised finance
- NFT marketplaces
- Blockchain games
- Decentralised exchanges
- Stablecoin applications
- Governance systems
- Digital-asset marketplaces
Ethereum’s ecosystem includes thousands of applications and digital assets.
What Is DeFi?
DeFi, or decentralised finance, refers to blockchain-based financial applications.
Ethereum has become a major platform for DeFi applications.
Depending on the specific application, users may be able to:
- Swap tokens
- Lend digital assets
- Borrow digital assets
- Provide liquidity
- Trade certain tokenised assets
- Use automated financial contracts
However, DeFi applications carry risks, including smart-contract vulnerabilities, market volatility, liquidity risks and third-party protocol risks.
What Are Ethereum Tokens?
Ethereum allows developers to create tokens through smart contracts.
A token can represent:
- Digital currencies
- Stablecoins
- Governance rights
- Digital collectibles
- Utility within an application
- Other forms of digital representation
ETH itself is Ethereum’s native cryptocurrency. Other tokens are generally created and managed by smart contracts deployed on Ethereum.
Ethereum and NFTs
Ethereum played a major role in the development of non-fungible tokens (NFTs).
An NFT is a blockchain-based token designed to represent a unique digital item or ownership-related record.
NFT applications can include:
- Digital art
- Collectibles
- Gaming assets
- Memberships
- Tickets
- Digital certificates
The value of an NFT is not guaranteed merely because it is recorded on Ethereum.
Ethereum and Stablecoins
Stablecoins are crypto assets designed to maintain a relatively stable value relative to another asset, often a fiat currency such as the US dollar.
Many stablecoins operate on Ethereum.
For example, Ethereum can be used to transfer and interact with stablecoins through smart contracts.
This demonstrates that Ethereum’s blockchain can support assets other than ETH.
Ethereum Layer 2 Networks
Ethereum’s main network is commonly referred to as Layer 1.
A range of Layer 2 (L2) networks are built to process transactions with the goal of improving scalability and reducing costs while leveraging Ethereum’s security or settlement infrastructure.
Ethereum’s official materials identify Layer 2 networks as part of the broader Ethereum network ecosystem.
A simplified structure is:
Ethereum Layer 1 → Layer 2 network → Users and applications
The exact technical design and security model varies between different Layer 2 networks.
Ethereum vs Bitcoin
| Feature | Ethereum | Bitcoin |
| Native cryptocurrency | ETH | BTC |
| Main purpose | Programmable blockchain and digital asset platform | Decentralised digital money/value network |
| Consensus | Proof of Stake | Proof of Work |
| Validators | Yes | Miners |
| Smart contracts | Major feature | More limited scripting |
| dApps | Major ecosystem | More limited |
| Supply | No fixed maximum | Maximum 21 million BTC |
| Fees | Gas fees | Transaction fees |
| Staking | Yes | No native staking |
| Mining | No longer used | Yes |
| Main execution environment | EVM | Bitcoin Script-based transaction system |
Both networks use blockchain technology, but their architectures and primary design goals differ.
Advantages of Ethereum
Programmability
Ethereum allows developers to deploy smart contracts and build applications on a public blockchain.
Large Application Ecosystem
Ethereum supports applications involving DeFi, NFTs, gaming, stablecoins and other digital assets.
Proof of Stake
Ethereum’s transition to Proof of Stake substantially changed how the network is secured and eliminated the mining-based consensus system previously used by Ethereum.
Open and Public Network
Anyone with suitable technical access can interact with Ethereum and its publicly available smart contracts.
Token Creation
Developers can create digital tokens through smart contracts without building a completely independent blockchain.
Risks and Limitations of Ethereum
ETH Price Volatility
ETH can experience significant price movements.
Smart Contract Risk
A programming error or vulnerability in a smart contract can result in financial losses.
Gas Fees
Network demand can affect transaction costs.
Wallet Risk
Losing private keys or recovery information can result in loss of access to assets.
Scam Risk
Users can encounter fake tokens, phishing websites, fraudulent dApps and impersonation scams.
Staking Risk
Direct or indirect staking can involve technical, liquidity, smart-contract, operator and slashing-related risks depending on the method used.
Regulatory and Tax Risk
Crypto regulations and tax requirements can change across jurisdictions.
Is Ethereum Safe?
Ethereum’s underlying protocol uses cryptographic security and Proof of Stake to secure the network, but this does not mean every application or asset built on Ethereum is safe.
There are several separate risks:
Ethereum protocol risk
Risk associated with the underlying network.
Smart-contract risk
Risk from bugs or vulnerabilities in individual contracts.
Wallet risk
Risk from lost keys, malware or compromised devices.
Application risk
Risk associated with a particular dApp or protocol.
Market risk
Risk that ETH or other tokens lose value.
Regulatory risk
Risk from changes in laws and regulations.
Therefore, saying “Ethereum is secure” does not mean every Ethereum-based project or investment is safe.
Ethereum in India
For Indian users, ETH can fall within the Virtual Digital Asset (VDA) tax framework when it meets the statutory definition.
The Income Tax Department currently states that income from VDAs is subject to a 30% tax under Section 115BBH, along with applicable surcharge and cess. The department also provides a separate Schedule VDA for reporting qualifying VDA transactions.
The tax treatment should not be confused with the market value of ETH itself.
For example, buying ETH does not mean that 30% of the purchase price automatically becomes tax. The applicable tax depends on the nature and tax treatment of the relevant transaction and income.
Ethereum and 1% TDS in India
India’s VDA tax framework also includes a TDS mechanism for qualifying VDA transfers.
For transactions governed by the earlier Income-tax Act provisions, Section 194S provided a 1% TDS mechanism subject to applicable conditions and thresholds. From transactions falling under the post-1 April 2026 framework, the Income Tax Department’s new-law materials use the corresponding TDS provisions under Section 393.
Therefore, articles or guides written before April 2026 may refer to Section 194S, while current 2026 compliance documentation may use the corresponding new-law provision.
The 1% TDS mechanism is also not the same as the final 30% VDA tax rate.
Is Ethereum an Investment?
ETH can be bought and held as a digital asset, but it does not provide a guaranteed return.
Its market value can be affected by:
- Demand for Ethereum
- Network usage
- DeFi and dApp activity
- Competition from other blockchains
- Regulatory developments
- Broader crypto-market conditions
- Technology upgrades
- Market sentiment
- Supply and issuance dynamics
Past ETH performance does not guarantee future returns.
Anyone considering ETH should understand both the potential uses of the Ethereum network and the risks associated with holding a volatile digital asset.
Common Ethereum Misconceptions
“Ethereum and ETH Are the Same Thing”
Not technically.
Ethereum is the network and platform, while ETH is its native cryptocurrency.
“Ethereum Still Uses Mining”
No.
Ethereum switched from Proof of Work to Proof of Stake in 2022.
“Every Ethereum Token Is ETH”
No.
ETH is Ethereum’s native asset. Other tokens can be created through smart contracts.
“Smart Contracts Are Legal Contracts”
Not necessarily.
A smart contract is fundamentally computer code deployed on a blockchain. Whether it constitutes a legally enforceable contract depends on the applicable law and circumstances.
“Ethereum Has a 21 Million Supply Limit”
No.
The 21-million limit applies to Bitcoin. Ethereum does not have a fixed maximum supply in the same way. Its supply changes through issuance and ETH burning.
“Staking Means Guaranteed Interest”
No.
Staking rewards are not the same as guaranteed bank interest. Validators face operational requirements and possible penalties, while indirect staking arrangements can introduce additional risks.
Frequently Asked Questions
What is Ethereum in simple words?
Ethereum is a decentralised blockchain platform that allows users to transfer ETH and interact with programs called smart contracts.
What is ETH?
ETH, or Ether, is the native cryptocurrency of the Ethereum network.
How does Ethereum work?
Users create and sign transactions, the network executes them, validators process and attest to blocks, and the resulting state is recorded on Ethereum’s blockchain.
Does Ethereum use Proof of Work?
No. Ethereum currently uses Proof of Stake. It stopped using Proof of Work in 2022.
What is Ethereum staking?
Ethereum staking involves committing ETH to participate in the network’s Proof-of-Stake security mechanism. Validators can receive rewards for performing their duties correctly and can face penalties for certain failures or dishonest actions.
How much ETH is required to run a validator?
A standard solo validator requires 32 ETH to activate the validator, along with the required software and infrastructure.
What is gas in Ethereum?
Gas is a measure of the computational work required to execute an operation on Ethereum. Users pay fees for this computation, generally using ETH.
What is a smart contract?
A smart contract is a program stored on Ethereum that executes according to its programmed rules when interacted with.
What are Ethereum dApps?
dApps are decentralised applications that use blockchain-based smart contracts for some or all of their functionality.
Is Ethereum the same as Bitcoin?
No. Bitcoin and Ethereum are separate blockchain networks with different architectures and primary purposes.
Is Ethereum taxable in India?
Qualifying income from ETH and other VDAs can fall under India’s VDA tax framework. The Income Tax Department currently states that VDA income is taxed at 30% under Section 115BBH, with applicable surcharge and cess.
Is ETH subject to TDS in India?
Qualifying VDA transfers can be subject to the applicable TDS provisions. For transactions from 1 April 2026 onward, current Income Tax Department materials refer to the corresponding provision under the new income-tax law.
Key Takeaways
- Ethereum is a decentralised, programmable blockchain network.
- Its native cryptocurrency is Ether (ETH).
- Ethereum launched in July 2015.
- Smart contracts are one of Ethereum’s defining features.
- The Ethereum Virtual Machine (EVM) provides the environment for executing smart-contract code.
- Ethereum currently uses Proof of Stake, not mining-based Proof of Work.
- Validators help secure the network by proposing and validating blocks.
- A standard solo validator requires 32 ETH.
- Ethereum transactions require computational resources measured through gas.
- The base fee is burned under Ethereum’s current fee mechanism, while validator incentives can include priority fees.
- Ethereum supports dApps, DeFi, NFTs, stablecoins and many other blockchain applications.
- Ethereum does not have Bitcoin’s fixed 21-million-coin supply cap.
- ETH can be staked, although staking methods involve different levels of technical and third-party risk.
- Ethereum’s blockchain is different from individual applications and tokens built on it.
- ETH and other qualifying VDAs can have tax implications for Indian users.
- India’s current tax framework provides a 30% special rate for income from transfers of qualifying VDAs under Section 115BBH, along with applicable surcharge and cess.
Conclusion
Ethereum is more than a cryptocurrency. It is a programmable blockchain platform designed to allow users and developers to interact with decentralised software.
At the centre of Ethereum is ETH, which is used for transactions, network fees and Proof-of-Stake participation.
The basic process can be summarised as:
Wallet → Transaction → Signature → Ethereum network → Smart-contract execution or ETH transfer → Validator → Block → Updated blockchain state
Its smart-contract functionality allows developers to build applications involving decentralised finance, NFTs, stablecoins, gaming, marketplaces and many other use cases.
Ethereum’s transition to Proof of Stake changed how the network reaches consensus and eliminated Ethereum mining. Today, validators use staked ETH to participate in securing the network.
For beginners, understanding the difference between Ethereum, ETH, smart contracts, gas, validators and dApps is essential before exploring more advanced topics such as staking, DeFi, Ethereum Layer 2 networks or ETH taxation in India.
