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Milestones QRL

A Peer-to-Peer Internet Ledger of Value

The concept of a peer-to-peer internet ledger of value, recorded as a blockchain and secured by proof of work was rst reported in 2008. Bitcoin remains the most widely used cryptocurrency to date. Hundreds of similar cryptocurrency ledgers have been subsequently created but with few exceptions they rely on the same elliptic curve public-key cryptography (ECDSA) to generate digital signatures which allow transactions to be varied securely. The most commonly used signature schemes today such as ECDSA, DSA and RSA are theoretically vulnerable to quantum computing attack. It would be valuable to explore the design and construction of a quantum resistant blockchain ledger to counter the potential advent of a sudden non-linear quantum computing advance.

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Milestones

1
November 2016

White paper release. After discussion with developers, post-quantum cryptographers and research into existing roadmap of blockchain technology, the whitepaper was written to provide an overview of quantum resistant methodologies. The Winternitz OTS+ and Extended Merkle Signature Scheme (XMSS) were identified as the optimal solutions. This investigation also revealed the necessity of QRL to stand alone as a network with interoperability in the later pipeline.

2
December 2016

Design of a proof-of-stake algorithm (POS) commenced

3
January 2017

Prototype node development with basic POS algorithm and integration of XMSS signatures

4
February 2017

Prototype node development with basic POS algorithm and integration of XMSS signatures

5
April 2017

Launch of the Alpha testnet with nodes running on MacOS, Linux, Windows on hardware including Raspberry Pi. Private seed presale round opens.

6
August 2017

Node optimization with C++. Inter-node encrypted communication (‘new hope’ lattice-based cryptography)

7
December 2017

Not willing to compromise a launch with an immature PoS protocol given how much value the project currently carries — and more importantly how much value it will hold in the future, QRL announces a move to temporary Proof of Work model.

8
January 2018

Proof of Work public testnet is released to the public

9
February 2018

The introduction and solidification of variable key heights and signature space allows us to ensure future compatibility with almost anything. Our blockchain now includes the possibility to upgrade signature schemes (XMSS, SPHINCS, + future) and through an address format update, support different cryptographic hash functions (SHA2_256, SHAKE_128, SHAKE256 etc).

10
March 2018

Our internal code review also compliments the more general internal security review we are currently in the process of conducting.

11
March 2018

Audit Completed by red4sec with x41 doing a secondary audit for further scrutiny.

12
June 2018

The QRL Main Network is officially Live!
Block Explorer: https://explorer.theqrl.org/
Web Wallet: https://wallet.theqrl.org/
Desktop Wallets: https://github.com/theQRL/qrl-wallet/releases
Release: https://qrl.foundation/assets/QRLF-PR-20180626.pdf

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