Ethereum, Bitcoin and Solana make different design choices rather than offering one universally best blockchain. Ethereum combines proof of stake with programmable smart contracts and a scaling ecosystem built substantially around rollups; Bitcoin uses proof of work and cumulative-work chain selection; Solana structures execution around accounts and programs, with Proof of History helping establish order and elapsed time. The comparison below focuses on those three networks—Bitcoin and Solana are useful contrasts, not stand-ins for every blockchain.
At a glance: Ethereum, Bitcoin and Solana
| Network | Consensus and chain selection | Execution model | Scaling context |
|---|---|---|---|
| Ethereum | Proof of stake. Gasper combines Casper FFG finality with the GHOST fork choice; chain weight reflects validator attestations weighted by stake. (Ethereum.org, “Consensus mechanisms”) | The Ethereum Virtual Machine (EVM) executes smart contracts, with computation priced through transaction fees. (Ethereum.org, “Technical intro to Ethereum”) | Rollups are a central scaling approach: they execute outside the base layer and post data to it. Rollup implementations differ in security and operating assumptions. (Ethereum.org, “Scaling,” last updated April 13, 2026) |
| Bitcoin | Proof of work. The canonical chain is selected by cumulative work. (Ethereum.org, “Consensus mechanisms”) | Bitcoin was framed as peer-to-peer electronic cash. It has a script model; describing it simply as having “no programmability” misses that distinction. (Bitcoin.org, “Bitcoin: A Peer-to-Peer Electronic Cash System”) | Scaling comparisons need to distinguish the base-layer payment and settlement design from secondary systems. The cited sources do not establish a detailed comparison of those systems. |
| Solana | Uses stake and a consensus stack. Proof of History contributes a verifiable sequence for ordering and time; it is not the entire consensus mechanism. (Solana, “Terminology” and whitepaper) | State is held in accounts; programs execute instructions, which can be composed into atomic transactions. (Solana, “Core Concepts” and “Transactions”) | Assess the base network separately from any other layer or measurement. The cited sources do not establish a comparable current live-throughput figure. |
How consensus and finality differ
Proof of stake and proof of work are different security assumptions
Ethereum validators stake ETH, validate blocks and attest to them. Its execution and consensus functions are handled by separate client roles: an execution client processes the transaction payload, while consensus clients coordinate block and attestation duties. Ethereum’s proof-of-stake documentation describes a 12-second slot and a 32-slot epoch; these are protocol parameters, not performance promises, and can change through upgrades. The same documentation describes a 32 ETH validator deposit requirement, which is a participation requirement rather than an investment recommendation. (Ethereum.org, “Proof-of-stake (PoS),” accessed 2026)
Bitcoin instead uses proof of work, with cumulative work determining the canonical chain. These mechanisms should not be reduced to the labels “stake” and “work”: they make different assumptions about how blocks are proposed and how the network selects among competing histories.
Confirmation is not the same as finality
Ethereum uses checkpoint-based finality: supermajority votes finalize checkpoints, and reversing a finalized block carries an economic cost. Bitcoin’s proof-of-work model builds confirmation confidence as work accumulates; that is not the same mechanism as Ethereum’s checkpoint finality. A confirmation count on one network therefore should not be treated as a direct equivalent of a finalized checkpoint on another. (Ethereum.org, “Consensus mechanisms” and “Proof-of-stake (PoS)”)
Solana has its own confirmation and commitment terminology. The cited material does not establish a common benchmark that makes Solana’s confirmation experience directly comparable with Ethereum’s or Bitcoin’s.
How applications execute on each network
Ethereum: contracts executed by the EVM
Ethereum’s EVM runs smart contracts: code that can define rules for ownership, transaction formats and state changes. The Ethereum whitepaper describes this general-purpose design as a blockchain with a built-in Turing-complete programming language. That programmability also means a transaction can require computational resources, which are priced through fees called gas. (Ethereum.org, “Ethereum Whitepaper” and “Technical intro to Ethereum”)
Bitcoin: payment design with a script model
Bitcoin’s original paper presents it as peer-to-peer electronic cash. Its design focus differs from Ethereum’s general-purpose smart-contract environment, but “Bitcoin has no programmability” is too broad: Bitcoin has a narrower script model. The distinction is about the capabilities and structure of execution, not a simple programmable-versus-not-programmable split. (Bitcoin.org, “Bitcoin: A Peer-to-Peer Electronic Cash System”)
Solana: accounts, programs and atomic transactions
In Solana’s model, accounts store state and programs execute instructions. Multiple instructions can be composed into a transaction, and the transaction executes atomically: either its instructions succeed together or the transaction fails. Proof of History supplies a cryptographic sequence that helps establish elapsed time and ordering; it should not be used as a synonym for Solana’s full consensus design. (Solana, “Core Concepts,” “Transactions,” “Terminology” and whitepaper)
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Ethereum’s base layer and its rollups are different parts of a scaling system, so one throughput number cannot represent them both. Ethereum’s scaling documentation describes rollups as executing transactions outside layer 1 and posting data to layer 1. Rollup implementations vary, including in their security and operating assumptions; the label “rollup” alone does not tell you exactly what protections or operating model a particular system uses. (Ethereum.org, “Scaling,” last updated April 13, 2026)
A throughput figure is meaningful only with its date, workload, measurement method and inclusion criteria. It also matters whether the figure describes a base layer, a rollup, or a combined ecosystem. An old Solana testnet claim of 50,000 transactions per second is not a current production measurement and should not be used as a live comparison.
Bitcoin scaling also needs a clearly defined scope. A base-layer payment or settlement comparison is different from one that includes secondary systems. The sources cited here do not provide a detailed, methodologically aligned comparison of those systems across all three networks.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Fees and transaction experience depend on context
Ethereum gas prices respond to network demand and the computational requirements of a transaction. A simple transfer and a transaction involving more computation need not consume the same resources. Transactions on a rollup also should not be conflated with transactions executed directly on Ethereum’s base layer. (Ethereum.org, “Technical intro to Ethereum” and “Scaling”)
Solana fees depend on the transaction and priority conditions. Bitcoin fee comparisons likewise need a dated example and a specified transaction type. The sources used here do not establish comparable current fee data for all three networks, so there is no supported timeless claim that one is always cheapest or fastest.
Which blockchain fits a given priority?
| If your priority is… | What to examine |
|---|---|
| Using general-purpose smart contracts | Ethereum’s EVM and the specific application or layer you intend to use. Check whether activity takes place on the base layer or a rollup, and understand that rollups differ in security and operating assumptions. |
| Understanding a payment-and-settlement design | Bitcoin’s proof-of-work chain selection and the role of the base layer in the particular use case. Treat any secondary-system comparison as a separate question. |
| Using account-based programs and composed transactions | Solana’s account and program model, including the instructions in the transaction and its atomic execution behavior. |
| Comparing security, cost or speed | Specify the exact network layer, transaction type, time period and measurement method. Compare confirmation or finality on terms appropriate to each protocol rather than treating unlike measures as interchangeable. |
For someone making a personal-finance decision, the network comparison does not predict token prices or establish which asset is a better investment. It can help clarify the technical assumptions behind an application, transfer or service, but the relevant costs and risks depend on the specific transaction and system.
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