A chain that survives the day everything else breaks.
Every public blockchain rests on cryptography that quantum computing will eventually break. The interesting question is not whether that day arrives. It is what happens to the value on those chains on the day it does. QuanChain exists because the current answer is unacceptable.
Every existing chain faces it.
On Q-Day, every chain must choose: hard-fork to post-quantum signatures and force every user to re-sign their balance, or stand still and watch the float drain. The choice is a choice between an existential migration and an existential loss.
What the chain is committed to.
Adaptive by default
A chain that has to fork to upgrade its cryptography is already late. QuanChain lets every wallet choose its level on every spend — no global migration, ever.
Public keys are temporary
Permanent on-chain public keys are a liability under Shor. Ephemeral child wallets and per-block rotation reduce the attack window to a single block.
Settlement at three speeds
A 200 ms channel for payments, a 2 s channel for contracts, a 10 s channel for data. One chain, three latencies, no shared bottleneck.
Operator-friendly economics
Validators run on commodity hardware. Bounded slashing. Honest mistakes do not bankrupt operators. The chain rewards uptime and good faith.
Open by construction
Whitepaper, reference implementation, SDKs, audit reports — all public. The cryptography is auditable line by line, the threat model written down.
Boring user experience
Security that demands user ceremony is security that gets bypassed. TADEQS rotates keys invisibly. Address forwarding handles the rest.