Software Development

BUILD'ers by heart - we are building real world applications, not just talk about them!

Decentralised Applications

We offer you the best blockchain solution

The way to approach software development in a decentralized context significantly differs from legacy technologies. This starts from the architecture and ideation with a “decentralized thinking” that we at Validity Labs fully embrace. Building a decentralized application (dapp) is more than exchanging an existing database with a blockchain. Current blockchains are the most expensive, slowest and least mature database technologies on the market and should only be used where it makes sense and for the subset of transactions that really do belong onto a blockchain. We support you in finding out what exact interaction should happen on-chain and off-chain and also find alternative technologies for off-chain transactions and data.


We help our clients to leverage the decentralised network built on the blockchain. Our Team utilizes our technical capabilities, product mindset and experience to build solutions that introduce a new level of transparency, efficiency and automation into our clients’ business processes.

Our first ICOs with Modum, Ambrosus, Medicalchain

After having followed early coin sales (e.g. Ethereum) and token sales (e.g. TheDAO, Golem, Melonport) and having solid foundations on Solidity smart contract development, Validity Labs started offering smart contract code review and development for clients. The first projects that we supported were Modum, Ambrosus and Medicalchain. We developed an increasingly sophisticated toolchain that extends the utility of community tools such as Truffle, Etherscan or solc-linter.

First protocol development

Our early smart contract and decentralized application development for customers goes back to building a decentralized marketplace (on-chain decentralized exchange) for a leading Swiss insurance firm in 2016. This experience enabled us to build a complex suite of interoperable smart contracts forming the Covee protocol in 2018. The protocol allows unknown parties to collaborate on a group task and implements a sophisticated game-theoretical balanced incentive scheme. The smart contract development was complemented by an extensive set of unit and integration tests written with the Truffle framework.

Tokenhaus - Go Live of ICO Investor Portal

In 2018, we developed the Tokenhaus Investor Portal to run a secure, compliant and seamless ICO end to end. The solution operates the full investor onboarding process, i.e. signup, KYC checks, AML checks, SAFT/ECA signing, and finally the investment to the ICO. In addition, it also provides an admin dashboard for the ICO team to manage the investors, compliance checks and investments. Our first client using this solution launched in summer 2018. Since then, we continuously improved and extended the Tokenhaus solution.

Smart Contract Coding for Legal Professionals

Teaching people the still complex blockchain topics as well as supporting people to build smart contracts has always been in the DNA of Validity Labs. In late 2018, we got several requests from large Swiss law firms for internal workshops on “Blockchain Fundamentals” as well as “Smart Contract Coding”. We redesigned and adapted our teaching courses for legal and corporate clients, on which we got excellent feedback so far. It is always inspiring for us to see how people start to rethink the status quo of certain businesses, institutions, organizations as soon as they have really understood the potential of blockchain.

HOPR - decentralized messaging protocol

HOPR is a messaging protocol that allows for fully privacy-preserving message exchange between any two parties on the internet. A sender pays relayer nodes to reliably relay transactions to the receiver, thereby not revealing their identity. The protocol comprises two layers: The messaging layer is inspired by TOR; the incentive layer leverages custom payment channels on Ethereum

Genesis of Validity Labs

While our founders Andre and Sebastian had both been active in the blockchain ecosystem, they got together at Ethereum DevCon 1 in 2015 with the aim to educate a new generation of decentralized application developers. Early ideas that later turned into TheDAO and other foundational projects were discussed at the time but we decided that it was not yet the right time for building actually decentralized applications on this young infrastructure. We contributed to the aftermath of TheDAO exploit and analysis and gave the first public workshop in continental Europe in early 2016. Overwhelmed by the positive feedback we decided to go all-in on educating and building the decentralized tomorrow.

First blockchain education in Switzerland

We educated the public in our first workshop on blockchains and smart contract development. Soon we would educate corporates on how to identify blockchain use cases and host our first Hackathon-as-a-Service for a large Swiss insurance company. On the academic end we introduced blockchain in the curriculum at ETH Zurich with the Blockchain-and-IoT-School (BIOTS) in summer 2016.

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Our decentralized applications and web frontends are based on the following tech stack: