Open Monetary and Banking System

Inclusive. Elastic. Decentralized. Scalable.

Decentralized Exchange

Pay with anything anywhere. DEX is an open protocol that enables a trustless exchange of any digital currency that supports HTLC (Hash Time Locked Contract).

Elastic Money Supply

To scale properly, the money supply must match demand. Tagion does not have a hard cap, but makes use of elastic supply, which aims to create a stable price level.

Inclusive Governance

Tagion and its resources are governed as a Common. All have equal right to participate, but it is the contribution which gives reward and power.

Scalable Core Technology

Tagion builds on a modular and scalable core. Each module can be changed and optimised. The main modules comprise of the distributed database, scripting engine, Hashgraph and gossip mechanism.

The Big Why

The world has too many financial (and physical) borders. Tagion was born to break down those borders and enable seamlessly peer-to-peer money transfers. Cheap, fair, and fast for anyone anywhere.

The Inquiring How

Current cryptocurrency systems have failed to gain wide-spread adoption, as several problems prevent these from doing so.

The Significant What

Tagion is a decentralised and permissionless monetary and banking system – run and owned by its users. Its genuinely fair and democratic governance model builds on the ideas and design principles of Nobel Memorial Prize winner in Economic Sciences, Elinor Ostrom. Tagion is self-sustainable and seen as a common resource that lets developers create new financial markets with a few clicks.

The elastic money supply and absence of a hard cap keep the value of the network tokens stable - and in time – Tagion will be a trustless, algorithmically controlled monetary and banking system, that keeps the token price stable. Given all developers, the possibility of creating a more sustainable economic world.

The Practical Where

Tagion is a universal token protocol that acts as the backbone for almost any transaction-based service such as C2C cross-border payments and daily micro-transactions and seamlessly exchange between all tokenised currencies.

Finally, Tagion is a vital aid for solving United Nations Sustainable Development Goal 10.c: by 2030, reduce to less than 3% the transaction costs of migrant remittances and eliminate remittance corridors with costs higher than 5%

AlphaOne Network Release

Tagion has released its first public network, called AlphaOne Network. This creates the first opportunity for the community and developers to test the network's functionalities.

Network API & Discovery Protocol

We are testing the Node discovery in a distributed setup, and the transaction API. The discussion around the API is open, critique, and new ideas are welcome.

Proof of Community

We are testing the Node selection algorithm and trust system models and experimenting with parameters that affect trust scores.

Basic DEX Algorithms

DEX development entering the active stage. We are starting to integrate with other chains via Lightning algorithms.

Network Stability & Capacity

A distributed network suggests a variety of hardware, working simultaneously. We are actively testing the stability and how we can ensure minimal hardware requirements are met.

DART & Sharding

DART (the database) was designed with sharding in mind. Finally, we are able to test DART synchronization algorithms and shards in the wild.

Stateless Smart Contract Engine

Testing the web-assembly based virtual engine for execution of stateless smart contracts. Fine-tuning our resource-limitations.

AlphaOne Monitor

Tagion AlphaOne comes with a monitor function, which lets you better understand how the AlphaOne network is operating, The monitor provides useful information such as network status, active nodes, and a hashgraph showing recent network communication and event ordering between nodes.

Bounty Program

To gain data and optimize the network Tagion has started a bounty hunt for developers and others who wish to test and help improve the network. More information on Tagion and the bounty hunt can be found here, or contact Tagion CSO Roxana Nasoi.

Technical Paper

DEX Protocol. Hashgraph Consensus. DART Database. Inclusive Governance.

This Technical Paper is a living document that will be updated as the project develops, and new concepts are being developed. In other words, the document version in front of you represents our thinking as of that moment. Open finance is a rapidly growing field, so feel free to contact us regarding our latest developments.

Tagion Roadmap

The team behind Tagion has spent a significant amount of time, funding itself, while building core components: Hashgraph, Gossip protocol, DART database, HiBON data format, the underlying API and more.

We keep implementing new functionality and getting closer to the major milestone, where we can open-source the Tagion project and launch the main network.


  • Ideation of BitCuits by Carsten Bleser Rasmussen.



  • Tagion project is formally started by the three founders.


  • Blockchain-based proof of concept network tested.



  • Redesigned network to use Hashgraph instead of Blockchain.


  • Confirmed that our design is not violating any patents.


  • Implemented β-version of HBSON (now HiBON) data format.


  • Implemented α-version of transaction API.


  • Implemented α-version of Gossip protocol.


  • Implemented α-version of Hashgraph consensus protocol.


  • Formed the core principles of the node governance model.
  • Successfully tested Hashgraph implementation in closed network.



  • Implemented α-version of scripting engine.


  • Implemented α-version of DART.


  • Filed patents for Gossip protocol and DART.


  • Formed the core principles of the economic governance model.


  • Implemented β-version of HiBON and HiBON-RPC.


  • α-launch of developer package and test node.



  • _basic release on GitHub.


  • HiBON release on GitHub.


  • Alpha test network release.



  • Open-sourcing the Tagion Core library.
  • β-launch of the Tagion Network.


  • Launching main network.

Meet People Behind Tagion

Tagion is an open-source project with members contributing from all over the planet. The company currently funding and developing Tagion, I25s, is located in Denmark and Ukraine. Currently, there are 15+ full-time resources working on the Tagion project.