Post-Quantum Security
Quantum safe accounts for blockchains you use today.
ECDSA, the signature scheme behind every Bitcoin and Ethereum address, is provably breakable by a sufficiently large quantum computer. That computer doesn't exist yet. But every account that has ever sent a transaction has already exposed the one thing an attacker would need. Instanodes builds quantum-safe account infrastructure you can deploy today, independent of any chain's own upgrade timeline.
1,200
Logical Qubits
Google's 2026 estimate to break 256-bit ECC, roughly 20x fewer qubits than earlier estimates assumed.
2028
Flagged Risk Horizon
Vitalik Buterin's warning on when quantum risk could threaten Ethereum's security model.
2030–35
NIST's ECDSA Sunset
Expected window for deprecating, then disallowing, today's signature scheme.
0
Retroactive Fixes
Once a public key is exposed on-chain, migration is the only option. Protection after the fact isn't possible.
Ecosystem readiness
The quantum roadmap isn't one roadmap. It's many.
Every ecosystem is taking a different path toward post-quantum security. You don't have to wait for protocol upgrades to protect your users.
| Chain / layer | PQ roadmap | Availability |
|---|---|---|
Ethereum L1 | EIP-8141 enables quantum-safe account abstraction with hash-based signatures and on protocol level still in research phase. | Research Phase |
Bitcoin L1 | BIP-360/361 introduce quantum-resistant address types and a phased migration path. | Long-term |
Solana L1 | Validator and transaction signatures use Ed25519, equally vulnerable to Shor's algorithm. Hash-based schemes are under early community research, with no committed migration timeline yet. | Early Research |
Avalanche L1 | Subnets sign with BLS and Ed25519/secp256k1 depending on configuration, all equally exposed to a future quantum break. No public post-quantum roadmap has been announced yet. | Not Announced |
Cardano L1 | Wallet and stake-pool signatures use Ed25519. IOG has published academic research into post-quantum alternatives, but no production timeline has been set. | Research Phase |
EVM L2s Layer 2 | Smart accounts already support custom signature schemes. No base-layer upgrade required. | Available |
Instanodes Infrastructure | Deploy hybrid quantum-safe accounts on Ethereum and EVM L2s now, independent of any chain's upgrade timeline. | NOW Deployable today |
The Instanodes approach
Quantum-safe accounts, deployable today
Hybrid post-quantum signing, engineered in the same direction as the Ethereum Foundation's own published roadmap, and shipped years ahead of any protocol's own migration target.
Hybrid signing by default
Every transaction gets signed under two independent schemes at once: your existing key plus a post-quantum signature. If one of them is ever broken, the account still holds.
No single point of failure
Cold recovery runs on a different mathematical family (hash-based) than day-to-day signing (lattice-based), so a future break in one path can't cascade into the other.
Deploys on-chain today
It's built on account abstraction, so it already runs on Ethereum and EVM L2s. No base-layer hard fork required, and no waiting on a protocol's own migration timeline.
Built to evolve
The validator design is modular, so new signature schemes can be installed later, once precompiles and proof aggregation mature, without ever moving to a new address.
This is new cryptographic infrastructure. It hasn't had a decade to prove itself the way older standards have, and we're upfront about that with every team we work with. We also design each deployment so a future scheme swap never requires a new address.
FAQs
Frequently asked questions
Not today. Breaking 256-bit ECC still needs quantum hardware far beyond what exists right now, though the gap is closing faster than expected. The bigger issue is that the risk is asymmetric: an attacker who copies exposed public keys today can forge signatures the moment a capable quantum computer exists. That's why teams are migrating early, not because a break is imminent.
Post-Quantum Security
Start migrating before migration is mandatory.
Talk to our team about a hybrid quantum-safe account rollout for your chain, wallet, or protocol, before a hard fork forces the timeline on you.