Community Directory

With Proof-of-Stake (PoS) a blockchain is secured not by spending an external resource such as electricity but by using value internal to the chain itself. The promise of higher security at a lower cost is what also drives Ethereum to plan a move away from Proof-of-Work to PoS in the future.

Ethereum researcher Vlad Zamfir, who leads their effort in the complex search for the optimal PoS consensus system joined us for an in-depth discussion of the challenges of PoS, the approach Casper is tak...

Businesses with the alleged potential to become the next Google are plentiful in Bitcoin-land, but finding actual commercial success is a lot harder. The best example of a commercial success is gift card company Gyft that became known as the first place to give access to a wide range of merchants for bitcoin holders and later achieved the largest exit so far in the crypto space in an acquisition by payments company First Data.

Gyft CTO Giyom Lebleu joined us to talk about how he got invol...

One of the concerns confronting the Bitcoin community is that of scaling the transaction throughput rate: How do we go from the current rate of approx. 5 transactions per second to a thousand times that?

In this episode, we talk to Emin Gun Sirer and Ittay Eyal from Cornell University regarding Bitcoin NG; a next generation Bitcoin blockchain design that addresses some protocol based limitations preventing Bitcoin from increasing transaction throughput.

Their proposal also enables fast (in...

Among the dividing themes in the Bitcoin space is the idea of public versus private blockchains. While some argue that private and permissioned blockchains can offer better scalability and lower latency for enterprises, others insist the Bitcoin blockchain will offer the best level of security and robustness longterm. Recently, projects have emerged that propose the best of both worlds by leveraging both off-chain and on-chain transactions.

This is the idea behind Openchain, an “open so...

A brilliant fact about crypto-economic blockchains is that they enable the construction of naming systems that transcend limits imposed by Zooko's triangle. Traditional naming systems such as human names, Domain Name System (DNS) and Facebook profile names are subject to Zooko's triangle and cannot be secure, human memorable and decentralised at once. For instance human names such as Meher Roy are human-memorable and decentralised but not secure (nothing prevents hundreds of people being cal...

We've made it to episode 100! Our guest for our celebratory episode is Juan Benet, inventor of the Inter-Planetary File System and founder of Protocol Labs. IPFS is a distributed file system that seeks to connect all computing devices with the same system of files. The possibilities for IPFS could range from distributed cloud hosting to websites without central servers to even replacing HTTP. It's a project as audacious as any we've had on the podcast.

One of the key innovations of Bitcoin is the ability to easily implement payment channels. A number of use cases have been discussed or demonstrated, among which is the idea of pay-per-use. This is particularly useful when charging for things like WiFi or streaming video by the second. With this in mind, one could imagine a line of communication between two peers, where data flows in one direction and payments flow in the other.

This is the idea behind Streamium, a free and open-source se...

When Robin Hanson invented the concept of prediction markets almost thirty years ago, he felt he had stumbled on a concept with huge implications. By allowing people to bet on the likelihood of future events, prediction markets promise to allow better forecasts and better decision making.

Research into the area has been vibrant, culminating in Hanson's concept of Futarchy: A prediction-market based governance system. At the same time, the real-world applications have been few and far.

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Prediction markets are considered one of the most promising applications of blockchain technology. Although the concept and some early implementations have existed for years, decentralized prediction markets present a number of advantages to their centralized counterparts.

Paul Sztorc joins us to discuss Truthcoin, a “Peer-to-Peer Oracle Protocol which absorbs accurate data into a blockchain so that Bitcoin-users can speculate in Prediction Markets”. We dive deep to explore the advan...

It is often said that technology is neutral. It’s certainly commonplace for Bitcoin to be thought of as such. In reality, technologies may be characterized as an embodiment of human intention, and therefore, cannot be considered as culturally or politically neutral. At least, this is the opinion of our guest, John Clippinger. A research scientist at MIT Media Lab and CEO of ID3, a nonprofit which aims to deploy a new generation of trusted digital institutions, John has spent the last seven...