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The most dangerous thing Google published this year wasn't a quantum circuit --> it was a ZK proof that a better quantum circuit existed without sharing the circuit.
A few months later, students with AI agents started reconstructing it!
Think about how fast the progresses whould be now?!
Not because Bitcoin is about to break, but because frontier cryptography research is turning into an open internet challenge powered by AI agents.
The age of "only experts can contribute" is ending and Q-day might be sooner than what expected.
Read more 👇
Legacy systems have been our cryptographic backbone for decades.
One challenge in the PQ transition is finding approaches that integrate cleanly into the systems & flows already used today.
That’s what @Mahdi_seda from @SoundnessLabs discussed at the PQTS #7 call last week. 🧵
Every quantum migration plan you have heard requires new addresses, a hard fork, or moving your assets somewhere else.
Come find out more tomorrow at zkSummit14 in Rome.
At 16:15 mainstage, @Mahdi_seda presents:
“Proof of Seed: ZK-Based Quantum Migration Without Address Changes”
The Coinbase Independent Advisory Board on Quantum Computing and Blockchain dropped a 50-page report on April 21.
Section 4.3 walks through four strategies for migrating execution-layer signatures to PQ.
Only one strategy gets a deployed example, by @SoundnessLabs
This is super interesting ...
BIP-361 (Phase C): recover frozen legacy UTXOs via ZK proof of BIP-39 seed knowledge. As said in our previous posts this is the most practical solution.
This is literally what we built for other chains with sub-second proving time, client-side. We have the most efficient construction for it at @SoundnessLabs.
The missing piece for Bitcoin: where and how do you verify the proof? No smart conract, no native verifier, limited opcodes. That's the research frontier we're on right now, stay tuned ...
1/ Bitcoin's latest post-quantum migration proposal, BIP-361, would freeze quantum-vulnerable addresses once the sunset period starts.
Freezing accounts is not ideal, but if you hold an HD wallet seed phrase, you'll still have a path to recover your funds after the freeze.
Here's how 👇🏻
Exactly, this is the right take; the algorithms are the easy part. The hard part is everything around them.
Upgrading crypto is not just swapping signatures. It is about exposed keys, coordination across the whole ecosystem, and no one to force migration.
So it is less “if quantum breaks crypto” and more: can we upgrade fast enough?
That is the gap we are solving at Soundness; upgrading accounts to be quantum-safe before it turns into a race. Find more details below 👇
That’s the epic part: a quantum adversary can easily front-run your transaction and drain your balance to zero.
Quantum-vulnerable cryptographic schemes need cryptographic solutions. Check out the Soundness stack and tools to address this today 👇
🔴Today is a big day for quantum threats against blockchains and crypto!
What @GoogleQuantumAI is showing is pretty concrete:
– ~20x improvement in Shor’s algorithm efficiency
– breaking ECDSA keys potentially in minutes, not months
– ~500K physical qubits to reach that level
– and a 2029 timeline that now looks realistic, not conservative
The gap between “theoretical risk” and “practical attack” is closing fast.
The takeaway is simple:
post-quantum is no longer something you prepare for later.
Systems need to be built so they can transition without breaking; because when this hits, there won’t be time to redesign everything from scratch.
That’s the direction we’re building at @SoundnessLabs.