The revolutionary idea of putting computer programs in a blockchain to create smart contracts has opened up a whole new world of possibilities. But, these programs have very different characteristics from other software. This talk explores these differences, some of the challenges that have been encountered, and then discusses how Kadena is solving these problems with its smart contract language Pact.
We now have the ability to create trust with software, as shown by
Ebay, AirBnB, and Uber.
Delft University of Technology is home to the oldest research group
creating online trust at scale with real people.
A total of 1.8 million people have installed our Tribler software over
the years. It offers a Youtube-like experience with Bittorrent
support, Tor-like anonymous tunnels, and our own bandwidth token
In August 2007 we launched a primitive distributed ledger together
with Harvard University for "bandwidth-as-a-currency". It provides an
incentive to donate seeding bandwidth or Tor-like relays. We have
expanded upon this initial operational system ever since.
Our system is based on trust, instead of crypto puzzles. Our IETF
standard outlines "Trustchain" in detail. Trust and trustworthy
identities are essential. We worked for years on the problem of fake
identities and we will go live with the first government-backed
self-sovereign identity after the summer.
We want to generalize the various isolated profit-driven communities
which try to build trust, to form a public utility. Our audacious
ambition is to establish a new scientific field, we call Distributed
Distributed Trust Design provides a coherent framework to transform
mutually non-trusting people into trustworthy online communities of
arbitrary size, that have a process for democratic decision-making,
the ability to punish those who freeride on the community or are
dishonest in order to manage a marketplace, govern a resource
sustainably, schedule activities, or achieve a common purpose in
After all the experimentation with blockchain in prior years, are the enterprises ready to go live? What do enterprises need to succeed with blockchain projects, and how is Oracle responding?
We’ll share a number of these examples from real world enterprises, and explain how they are re-engineering their business processes to raise the level of trust through the use of permissioned blockchain technology integrated with identity management and role-based access control. We’ll also look at what challenges companies are working to address, and how blockchain technology is evolving to bring greater performance and plug-n-play integration capabilities to meet the needs of the enterprise.
We present a real-life use case for proxy re-encryption in the context of the Unicorn Bay solution.
Unicorn Bay is a blockchain solution for the Asset management industry where we keep track of portfolio management strategies and classic assets trading operations. These are highly strategic information for our clients and as such should remain confidential. Keeping the right balance between a fully decentralized architecture and private data requires a method for encrypting data and having access control on that data. In order to solve this issue we use proxy re-encryption.
Adi Ben-Ari looks at how to design and build future proof, platform agnostic, blockchain applications, by solving for identity, privacy, and security outside the blockchain.
We introduce NuCypher KMS: decentralized key management network. Unlike traditional key management systems, it only re-encrypts data and never decrypts.
Access permissions are represented by re-encryption keys which are used by our threshold split-key re-encryption scheme [Umbral].
The talk explains how the system works, token economics behind the network, and how to build multu-user end-to-end encrypted applications with it.
Scaling a public blockchain has been proven to be a challenge. Now everyone understands the trade off between partial data and processing locality (delegates Proof of Stake consensus) and true distributed participation (Proof of Work). Following a brilliant idea from the original Plasma whitepaper (plasma.io) BANKEX has developed its own implementation that allows to scale an asset transfer transactions to 10k transactions per second, provides customer protection and can resolve disputes automatically through the smart contract. Here an BANKEX we believe that delegation of processing to sibling chains with possibility of dispute resolution on the patent one is a right way to solve processing speed/ distribution trade off in public ledgers
While Satoshi's achievement in designing a consensus protocol for a totally decentralized system isn't overrated, the setup of total trustlessness imposes severe limitations on its scalability. Protocols which give some authority to recognized nodes are easily more scalable and efficient; yet, this boost in performance comes at the expense of needing to trust these nodes. This trust can take vastly different forms, from trusting a single entity with the integrity of the data, to trusting it with the persistence of the state, to trusting it merely for good performance of the system. This spectrum of trust can potentially bridge the gap between developers who advocate for full decentralization and redundancy of the base platform and product managers who are interested in use cases for ordinary trusting end-users.
Blockchain has fundamentally changed our relationship with trust. At
its core, blockchain networks (and their consensus protocols) provided
to us a feat of engineering that seemed impossible just a few years
A system can now be computationally proven trustworthy as a whole
without every individual entity within that system needing to be fully
trusted. Still, so far we mostly dealt with blockchain systems rooted
in the virtual reality (crypto currencies, digital identities, smart
This talk will briefly cover:
What is a cyber-physical system and why cyber-physical systems are
fundamentally different from systems rooted in virtual reality.
Why cyber-physical systems require a hybrid approach to building a
trustworthy, digitally verifiable "digital twins" of the physical
world they are embedded in.
An approach, built around using Delegated Proof-of-Stake (DPOS)
Consensus blockchains coupled with trustworthy, fully disaggregated
software computational enclaves, allowing for the creation of
radically different kinds of oracles. The kinds of oracles that can
finally provide to be the missing link connecting blockchain and smart
contracts to the trustworthy, computationally verifiable reality and
all of its rich information sources.
Hyperledger was formed with the vision of establishing a community where we could bring together the smartest minds to solve the challenges of delivering blockchain technology for the enterprise. Two and a half years later, that vision is being realized. Hyperledger's "greenhouse" is not only incubating new technologies, but is now entering into the collaboration and consolidation phase, and out of this is emerging some important new innovation.
In a world where trust has become one of the leading values, enabling our digital lifestyle, how well is the financial industry positioned to support the shift of mind and to empower our customer to transition to a distributed economy? During the presentation, I try to explain where are we come from and what is ING’s vision, touching upon some of the challenges we have yet to overcome.
When Topl began development in early 2017, Chris and his team set out on a truly unique course for the blockchain space. Instead of trying to build the next Ethereum, a single blockchain meant to run a myriad of decentralized applications (DAPPS) or simply building a DAPP on top of someone else's blockchain, Topl set out to build one of the very few application specific blockchains. The Topl blockchain incorporates a significant but finite set of features, including prediction markets, smart contracts, supply chain integration, and identity management, all in support of a single process, socially-responsible investment into developing countries.
In this talk, Chris and Topl's CTO, Jim Aman, will detail Topl's approach to the building its own application-specific blockchain, covering both the benefits and drawbacks of such a strategy.
Gennady will share emerging trends in application architecture for handling confidential data and compliance by design.