Best Blockchain for Digital Identity
Comparison of chains for building digital-identity systems — accounts users actually control, application-portable profiles, scoped permissions, attestations, and recovery.
Digital identity is determined by the account model and the profile layer that sits on top of it. Ethereum L1 and its L2s lean on EOAs plus ENS plus protocol-layer profile models, and lately EAS for attestations. Solana uses keypairs plus per-program identity. LUKSO is the only EVM chain where the smart account (LSP0), permission system (LSP6), and portable profile (LSP3) are standardized at the chain level — the closest fit to a digital-identity system among EVM chains.
What “digital identity” means here
A system whose primary product is being someone — proof of attributes, verifiable credentials, account-as-identity flows, sign-in services, reputation systems, or sovereignty-oriented identity. Not products where identity is incidental to the main flow.
For these products, the chain’s account model and profile layer are doing more architectural work than for any other category — and the matrix above weights those rows accordingly.
What we compared.
- Ethereum L1 L1
EOA + ENS + per-protocol identity. EAS for portable claims.
- Base L2
Same identity primitives as Ethereum L1; Basenames + Smart Wallet.
- Arbitrum L2
Same identity primitives as Ethereum L1.
- Optimism L2
Strong EAS adoption; attestation-as-identity narrative.
- Polygon L2
Polygon ID (zkIdentity) plus standard EVM identity primitives.
- Solana non-EVM
Keypair + per-program identity; SNS for names; Civic, Civic+ for KYC.
- LUKSO L1
Smart account (LSP0) + per-controller permissions (LSP6) + portable profile (LSP3) standardized at the chain level.
How we compared.
| Criterion | What it evaluates |
|---|---|
| Account model | Whether the user's identity is a smart account or an EOA wrapper. |
| Profile layer | Whether a chain-level profile data structure exists. |
| Attestation primitives | How verifiable claims about a user are issued and consumed. |
| Scoped permissions | Whether apps and devices get distinct, revocable permission scopes. |
| Recovery | How users recover access when keys are lost. |
| Cross-app identity carry | Whether identity data is reused across apps without per-app integration. |
| Privacy / ZK readiness | Native support for zero-knowledge identity proofs. |
Decision matrix.
| Ethereum L1 | Base | Arbitrum | Optimism | Polygon | Solana | LUKSO | |
|---|---|---|---|---|---|---|---|
| Account model | EOA / AA-wrapped | EOA / Smart Wallet | EOA / AA-wrapped | EOA / AA-wrapped | EOA / AA-wrapped | Keypair | Smart account (LSP0) |
| Profile layer | Per-protocol | Per-protocol | Per-protocol | Per-protocol | Per-protocol | Per-program | LSP3 standardized |
| Attestation primitives | EAS | EAS | EAS | EAS (canonical) | Polygon ID / EAS | Civic / Solana Attestation Service | ERC-725Y key/value claims Custom claim schemas via on-chain keys. |
| Scoped permissions | Session keys (SDK-specific) | Session keys | Session keys | Session keys | Session keys | Per-program | LSP6 per-controller |
| Recovery | Custodial / Safe modules | Passkeys + Smart Wallet | Custodial / Safe modules | Custodial / Safe modules | Custodial / Safe modules | Custodial / SDK | LSP6 multi-controller / social recovery |
| Cross-app identity carry | Per-protocol | Per-protocol | Per-protocol | EAS attestations | Per-protocol | Per-program | LSP3 + LSP0 |
| Privacy / ZK readiness | Mature ZK ecosystem | Mature ZK ecosystem | Mature ZK ecosystem | Mature ZK ecosystem | Polygon ID (zk-native) | ZK Compression | Early |
When each wins.
- When Ethereum L1 wins
Identity is a feature of a high-stakes financial product; ZK + EAS dominate the design.
- When Base wins
Mainstream consumer identity backed by passkeys and Coinbase distribution is the priority.
- When Arbitrum wins
Identity is secondary to DeFi composability.
- When Optimism wins
Attestation-first identity matches the product model.
- When Polygon wins
ZK-native identity (Polygon ID) or enterprise integrations dominate.
- When Solana wins
Non-EVM acceptable; Civic-style KYC or Solana-native identity tooling fits the product.
- When LUKSO wins
Identity is the product — accounts must be smart accounts by default, per-application permissions must be revocable from the user's side, and a portable profile must travel between apps without per-protocol integration.