QSSNdemoQuantum computers will break today's wallets.
QSSN adds a second, quantum-safe signature to every payment, and works on any EVM-compatible chain. Send one yourself on the Sepolia testnet.
Today
One key protects the wallet. Its public half is on the chain from your first payment.
A large enough quantum computer can work the key out from that.
Anyone holding the key can spend the funds.
With QSSN
Two keys protect the wallet. One is quantum-safe.
A quantum computer can work out the classical key, but not the quantum-safe one.
Every payment needs both signatures, so the funds stay put.
That computer might not exist yet. But public keys stay on the chain for good, so whatever is still behind one when it arrives is lost. NIST plans to phase out ECDSA and the other quantum-vulnerable signatures by 2035.
A pilot with LINE NEXT.
QSSN is being piloted with LINE NEXT on Kaia, the blockchain inside LINE. The pilot is the first step towards payments like this one reaching LINE's users.
LINE and Kaia today
- 200M+
- people use LINE Messenger
- 35M+
- use Mini Dapps on Kaia, inside LINE
- 1st
- bank-led KRW stablecoin pilot in Korea
Who is involved
LINE NEXT, the pilot partner
The chain inside LINE, where the pilot runs
- UNIFI
Settlement layer to Tether and JPYC
Japan's yen stablecoin