Blockchain and other Distributed Ledger Technologies change the way we deal with the issue of trust, the basis for all business relations. This paradigm shift enables a digital future with novel governance of organizations and business models: abandon centrally and hierarchically organized trust services of middlemen, reallocate their tasks in a decentralized network and reward each participant for his contribution to the maintenance of a healthy ecosystem.
Understand the capabilities and limitations of distributed ledgers.
Deep dive into the world of Ethereum, Quorum, Hyperledger Fabric and more.
Develop future-proof smart contracts and decentralized applications.
Ideate, evaluate and test prototypes of your blockchain use cases.
Design and implement your private blockchain network.
Make sure your distributed ledger applications have no critical vulnerabilities.
We participated in the joint review of the architecture with the goal to extend the wallet with scalable multi-currency support as well as in the development of the necessary feature extensions for enabling ETH and other Ethereum-based cryptocurrencies (ERC20 tokens). In the course of this development the mobile wallet was integrated with the Ethereum network using Infura and the web3j library and the new version of the user interface of the native Android app was redesigned providing e.g. real time exchange rates.
We designed the blockchain layer of a decentralized platform for the transport industry. Participants in a consignment share their data enabling them to optimize the planning and utilization of their resources. All participants of the transport chain will be informed about delays occurred immediately and can adapt their resource planning accordingly in a timely manner. The consortium blockchain will be run and governed by the participating transport companies. Scalability of the number of validator nodes and the throughput as well as confidentiality of the transactions were key requirements. We evaluated Parity and Quorum as technology alternatives for an Ethereum-based approach as well as MultiChain, BigchainDB, NEM, Tendermint and Hyperledger Fabric as alternative solutions.
We set up a hybrid blockchain for cloud and hosting providers and their clients for automating service credits. Monitoring data are transmitted directly to the blockchain. They can be observed by clients immediately and can’t be modified by service providers anymore. We have realized this using Hyperledger Fabric with a separate private channel for each client to keep data confidential. The service level agreements are implemented as smart contracts on the public Ethereum blockchain. They receive information about the actual availability of the corresponding cloud or hosting service from oracles based on data recorded in Hyperledger Fabric and calculate the service credits of the client automatically.
We developed EtherLib, a peer-to-peer marketplace for monetizing books their owners do not need anymore. The books are passed on from reader to reader, each of them compensating a portion of the original purchase price. After a certain number of transfers, the price of a book is split among all readers. Smart contracts on Ethereum govern the marketplace and the frontend, an Ionic mobile app communicates with the Ethereum network using web3.js and the Google Books API to retrieve master data of the books.
In order to enable their members to participate in decisions of the general assembly more often than once a year, cooperatives need a cost-efficient and tamper-proof solution for virtual general assemblies conformable to law, using which members can contribute to decisions in a digital way from any location as often as desired. Our solution is a Decentralized Autonomous Organization (DAO) based on a blockchain. Smart contracts govern processes like the admission of new members, elections of board members as well as secret voting on petitions submitted by members. We have implemented the latter using traceable ring signatures and stealth addresses. They ensure non-linkability of votes cast, verifiability of the own vote of each member and confirmability of the result after closing the vote.
All-day workshop to become acquainted with the most important blockchain concepts. We show you how P2P networks and different consensus algorithms work, practice the design and the development of smart contracts and evaluate use cases for your organization.