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Ethereum is a permissionless, public blockchain with Proof of Stake consensus, Solidity smart contracts, and pseudonymous identity — ideal for public-facing applications and token issuance. Hyperledger Fabric is a permissioned, private blockchain with BFT consensus, chaincode in Go/Java, and formal identity — ideal for enterprise, multi-org, high-privacy use cases.
Architecture Differences
| Dimension | Ethereum | Hyperledger Fabric |
|---|---|---|
Permission model | Permissionless | Permissioned (MSP) |
Consensus | Proof of Stake | Raft or BFT ordering |
Smart contract language | Solidity (EVM) | Go, JavaScript, Java |
Transaction privacy | Public (all visible) | Channel-level privacy |
Transaction cost | Gas fees ($0.01–$50+) | Near zero |
Throughput (real-world) | 12–30 TPS (L1) | 1,000–5,000 TPS |
Finality | ~12 seconds (probabilistic) | Immediate (BFT) |
Identity model | Pseudonymous (wallet address) | Formal identity (X.509 cert) |
Developer pool | Very large | Smaller |
Audit firm support | Extensive | Limited |
When Ethereum Is Better
- Application must be accessible to the general public
- Integration with the broader DeFi/NFT/Web3 ecosystem
- Token issuance to public investors
- Smart contract auditor availability is critical
- Development team already knows Solidity
When Hyperledger Fabric Is Better
- Transaction data must be private between specific participant subsets
- Enterprise integration requires formal organizational identity
- Near-zero transaction cost is required
- Regulatory environment requires participant whitelisting
- Supply chain with defined, known participant organizations
Hybrid: Private Ethereum vs Hyperledger Fabric
For enterprise applications that want EVM compatibility (Solidity, auditor pool) with private deployment: private Ethereum (Besu, Geth with permissioning). This is the middle path — private deployment, familiar language, without the full enterprise feature set of Hyperledger Fabric.