With the advent of mature quantum technologies, many of the critical cryptographic protocols which secure the Internet, financial transactions and even military secrets may become susceptible to new attack vectors. For instance, while it may take a computer millions of years to decipher a public key’s corresponding private key, a sufficiently powerful quantum computer might achieve this in a reasonable amount of time. With this reality looming over us, many in the blockchain space worry that someone with access to a quantum computer might one day have the ability to steal their hard-earned crypto. We’re joined by Ajay Prakash and Gavin Brennen, founders of the Qubit Protocol, a decentralized blockchain-enabled governance protocol that is meant to select and fund the best startups in the quantum world. As a co-author of the recent paper “Quantum attacks on Bitcoin, and how to protect against them,” Gavin walks us through the primary threats that quantum computing poses on Bitcoin. Among the major vulnerabilities are hashing functions and Elliptic Curve algorithms used for digital signatures, both fundamental components of Bitcoin, as well as many other blockchain protocols. Topics covered in this episode: What are quantum technologies and how they differ from the existing paradigm The areas and industries which are to benefit most from quantum computing A refresher on hashing algorithms as one-way functions What a quantum attack on Bitcoin mining might look like How Elliptic Curve digital signature algorithms work and how public and private keys are generated The three types of attacks a quantum computer could perform digital signatures The expected timelines for these attacks to be viable The potential countermeasures which could circumvent quantum attacks on Bitcoin The Qubit Protocol as a DAO to fund quantum technology startups and the challenges of investing in the quantum space The project’s roadmap and upcoming ICO Episode links: Qubit Protocol Quantum attacks on Bitcoin, and how to protect against them Quantum Computers Pose Imminent Threat to Bitcoin Security - MIT Technology Review" Shor's algorithm - Wikipedia Elliptic-curve cryptography - Wikipedia This episode is hosted by Sébastien Couture. Show notes and listening options: epicenter.tv/231

In just over ten years, geospatial tracking has gone from being a niche technology used by the military and outdoor enthusiasts to mass adoption, available to just about every connected device in existence. GPS and other location-tracking systems not only allows us to find our way and share our location but is critical to businesses and governments. However, while GPS has become a standard thanks to its accuracy and availability, decentralized applications can’t rely on its location data as it can be easily spoofed and lacks reliability. We’re joined by Ryan John King, CEO of FOAM, a blockchain protocol which aims to offer secure location services independent of external centralized sources such as GPS. FOAM introduces a novel crypto-spacial coordinate system that is better suited to blockchains than standard addresses or latitude and longitude coordinates. It also provides a Proof of Location Protocol, which leverages long-range low-power radio networks, and incentive mechanisms, allowing network participants to arrive at consensus on whether an event or agent is verifiably at a particular point in time and space. Topics covered in this episode: Ryan’s background and how he became involved in the space How geospatial tracking works and the pitfalls of GPS The vision for FOAM and the problem it is trying to solve The proposed Crypto-Spatial Coordinate Standard FOAM’s Spacial Index fullstack visualizer The Proof of Location Protocol proposed by FOAM Low-power radio networks and their role in the system The civil and business applications for FOAM Episode links: FOAM Website FOAM Blog This episode is hosted by Meher Roy and Sébastien Couture. Show notes and listening options: epicenter.tv/229