asset · quantum risk

ETH (Polygon zkEVM) Quantum Risk for Holders

Risk: high · Confidence: high · Reviewed: 2026-07-19

Verdict

ETH is only as quantum-safe as controlling keys and venues. Polygon zkEVM is not quantum-proof. It is a separate zkEVM deployment from Polygon PoS: classical EOAs plus prover/bridge keys.

Overview

ETH is the liquid ticker framing for Polygon zkEVM in Wave 7e. Holder risk is dominated by authorization keys and venues—not slogans.

Polygon zkEVM must not be confused with Polygon PoS. User signatures are still classical EVM; ZK validity does not equal PQC wallets.

This dossier is educational, not investment advice.

Cryptographic profile

Signatures: ECDSA-secp256k1 (EVM EOAs), zkEVM prover/bridge keys
Hash: Keccak-256
Public-key exposure: Distinct from Polygon PoS; separate bridges and EOAs.

What breaks

Hot wallets controlling large ETH balances
Unmapped bridges, issuers, or L2 operators
Wrong host-chain assumption for multi-chain assets

Mitigations

Hardware / multiparty treasury policies
Document chain, bridge, and custodian for every balance
Read /is-quantum-proof/polygon-zkevm for mechanism detail

FAQ

Is ETH quantum-proof?

Polygon zkEVM is not quantum-proof. It is a separate zkEVM deployment from Polygon PoS: classical EOAs plus prover/bridge keys.

Related?

Polygon, Scroll, zkSync, Ethereum.

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