Instanodes Brings Ethereum and Solana Post-Quantum Accounts
Instanodes, a blockchain infrastructure provider managing nodes across more than 50 networks, has developed post-quantum account implementations for Ethereum Virtual Machine (EVM) chains and Solana. These implementations utilize hash-based digital signatures. The company announced this development on November 3, 2026, alongside quantum-readiness assessments and custom cryptographic engineering services for exchanges, custodians, and protocol teams. This initiative comes as NIST deadlines approach, with classical public-key cryptography facing deprecation after 2030 and disallowance after 2035, giving blockchain operators a fixed timeframe for migration.
Instanodes’ Announced Offerings
Instanodes describes account-level implementations that have been tested on both chains, with verification logic specifically adapted for each execution environment. In its announcement, the company does not name a specific NIST signature standard, such as ML-DSA (FIPS 204) or SLH-DSA (FIPS 205), only stating that it employs hash-based digital signatures for account authorization. This omission is significant, as the chosen scheme directly impacts signature size and whether it complies with a chain’s transaction limits.
According to Instanodes’ announcement, the offering includes:
- Post-quantum accounts: Hash-based signature implementations for EVM networks and Solana, designed for integration with wallets, custody solutions, and protocols.
- Quantum-readiness assessments: Reviews of cryptographic dependencies, accompanied by migration roadmaps.
- Custom cryptographic engineering: On-chain verification mechanisms, ERC-4337 smart-account code, and custom Solana programs.
Two Chains, Two Migration Challenges
The two target blockchains require different solutions. On Ethereum, signature logic can be integrated into the account contract through ERC-4337 account abstraction, which already supports custom validation. Though this addresses account-level authorization, it leaves the issue of consensus-layer BLS signatures unresolved. For Solana, Instanodes states that their designs incorporate program-level verification without replacing the native Ed255519 transaction signatures. This separation reflects Solana’s strict transaction packet limits, which are challenging for post-quantum signatures to fit within.
StarkWare‘s work on Starknet offers the closest public precedent for an on-chain post-quantum account, with the company establishing a public migration record rather than relying on future promises.
The impending deadlines are substantial. NIST IR 8547 sets 2030 for the deprecation and 2035 for the disallowance of classical public-key algorithms, and the NIST transition guidelines detail the necessary migration steps. Coinbase CEO Brian Armstrong has described quantum computing as a greater threat to cryptocurrency than AI.
For further information on blockchain migration and PQC standards, please refer to QNews’ coverage of quantum security.