Quantum Resistant Ledger
A ‘future proof’ blockchain
A blockchain designed for long-term stability with quantum computing resistant encryption. This is a pre-sale round.
The quantum-resistant ledger. (Hit funding cap during private pre-sale.)
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The Quantum Resistant Ledger (QRL) project is a public blockchain ledger designed to be specifically secure against quantum computing (QC) advances. Unlike existing ledgers, such as bitcoin or ethereum, the QRL is specially designed to use a form of post-quantum secure signature for transactions called XMSS. The QRL also uses a low power proof-of-stake (POS) algorithm which again utilises iterative hash-chains and provably secure hash-based pseudo random number functions. The POS algorithm is designed to have zero reliance upon conventional signatures which are vulnerable to a sufficiently powerful QC and allows nodes to run on low power devices such as raspberry PI’s or laptops and passively earn income by staking.
Update 05/04/17: The QRL website has been updated to include links to team member’s Keybase IDs. The Keybase IDs include links to member’s social media profiles.
The Quantum Resistant Ledger (QRL) is a high security blockchain that uses a quantum computing resistant encryption method. The encryption methods used by today’s blockchains could become vulnerable to quantum computing within the next 10 years. QRL aims to create a blockchain with long term stability.
May 02, 2017 at 9:16 pm, Kaloyan said:
Peter Waterland, You have to excuse this inquiry. But I see the guy listed as a gastroenterology surgeon at Russells Hall Hospital. Where he has a profile picture ( and published articles on erectile dysfunction) , wich is exactly the same at medium.com where he discusses quantum computing related to cryptocurrency. Please clarify!!! This seems a little strange ..
May 03, 2017 at 4:10 am, Jason Park said:
> Yes he is a gastroenterologist in the UK but also has talent in IT. I found this strange too but Dr Lomas is also an ICU/anaesthetist and I have confirmed with him that they are indeed core devs as well. So no it’s not a fake ID scam.
May 13, 2017 at 10:43 am, joe said:
> Are you the author of this review? You independently verified the IDs?
May 04, 2017 at 12:31 pm, The Quantum Resistant Ledger said:
keybase.io/jomari /pwaterland /filipradicevic /mkolenbrander /jplomas /cyyber
We consider ourselves very open and approachable on both social media and via slack. Don’t hesitate to reach out.
June 13, 2017 at 2:02 pm, Tracy said:
Why isn’t Nexus Earth not listed here? Guess Nexus needs a better marketing plan, especially when they are at the forefront of quantum resistant computing. Doesn’t appear that the lead developer does surgery as a true profession and IT as a hobby. Based on all the podcasts and youtube videos I’ve watched, Colin Cantrell is a mad genius. Unfortunate they don’t have a better marketing team, especially when their competition is a guy who does gastroenterology surgery!
December 22, 2017 at 1:00 pm, Jack Matier said:
> [nexus] are at the forefront of quantum resistant computing.
Nexus is interesting, but in regards to Quantum Resistance, they might have plans, but as it currently stands they went out to achieve Quantum Resistance by sect571r1, which likely only extends the resistance by a few years at best since it still relies on ECC.
On the aspect of the amount of qubits required to break ECC, the paper “Quantum Resource Estimates for Computing Elliptic Curve Discrete Logarithms” doesn’t mention sect571r1 but does mention 256-p, which would require 2330 qubits, while 521-p would require 4719, roughly doubling it, 571 isn’t so far off.
In order to get an idea of where I’m coming from with extending ECC only giving you a few years extra time, you’ll want to take into context of the pace of development of Quantum Computing. In 18 months, IBM went from a 5 qubit computer to a 50 qubit computer, representing a 10x increase. If this were to continue at this pace, you’d have a few months, but even if we consider a 2x increase in an 18 month period, that’s still looking to be a maximum of 2 years.
Scaling Quantum Computers is still challenging, but I suspect a scaled QC release would be in the 10’s of thousands of Qubits representing a non-linear progression. This would dwarf any ECC out there in an instant. With that said, we’re speaking about the future, and anything can happen.
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About The Quantum Resistant Ledger he Quantum Resistant Ledger (QRL) project is a public blockchain ledger designed to be specifically secure against quantum computing (QC) advances. Unlike existing ledgers, such as bitcoin or ethereum, the QRL is specially designed to use a form of post-quantum secure signature for transactions called XMSS. The QRL also uses a low power proof-of-stake (POS) algorithm which again utilises iterative hash-chains and provably secure hash-based pseudo random number functions. The POS algorithm is designed to have zero reliance upon conventional signatures which are vulnerable to a sufficiently powerful QC and allows nodes to run on low power devices such as raspberry PI’s or laptops and passively earn income by staking. There are several important cryptographic systems which are believed to be quantum-resistant: hash-based cryptography, code-based cryptography, lattice-based cryptography, multivariate-quadratic-equations cryptography and secret-key cryptography. All these schemes are thought to resist both classical and quantum computing attack given sufficiently long key sizes. Forward secure hash-based digital signature schemes exist with minimal security requirements that rely only upon the collision-resistance of a cryptographic hash function. Changing the chosen hash function produces a new hash-based digital signature scheme. Hash-based digital signatures are well studied and represent the primary candidate for post-quantum signatures in the future. As such they are the chosen class of post-quantum signature for the QRL.
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