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Decentralized “PayPal”. From decentralized digital currency to decentralized digital commerce. Themis provides a decentralised digital currency escrow service to provide fair exchange services among digital currencies, digital assets, and physical goods. Themis leverages a novel group escrow protocol, along with threshold encryption, anonymous reputation mechanisms, non-interactive zero-knowledge proof, high performance digital signature algorithms, in order to provide atomic exchange with guaranteed fairness. Also, Themis is able to mitigate DoS attacks, and provide privacy for all peers.

Blockchain-based digital currencies are playing a radical importance in today's trading activities. As a result, a variety of digital currency exchanges were founded and their transaction scales are exploding. At the same time with the rise of a tokenized economy, more and more countries such as Japan, Germany, or Australia, are accepting cryptocurrency payments. There is huge potential that the market will continue to expand globally and accept the commercialization of digital currency.

Currently, most digital currency exchanges and peer-to-peer transaction providers focus on ensuring the security of transactions but pay little attention to fairness. For example, HTLC (Hashed Time-lock Contract), a widely-used atomic exchange technology, is vulnerable to denial of service (DoS) attacks. Attackers may launch DoS attacks in the period of time-lock to make the counterparty unable to get refunded in a specific time.

Meanwhile, during the process of trading between the digital currency and the goods, buyers prefer paying to the seller after the goods are received, whereas the seller has an opposite preference in mind. This situation makes the transaction and delivery unable to be met at the same precise time, it can be persistent to achieve atomic exchange with the guaranteed fairness. A common solution is resorting to a trusted third-party to achieve fairness, however, this solution is not entirely satisfactory due to previous failures. There have been several Bitcoin exchanges and online markets (such as Mt. Gox, Silk Road) that went down due to hacker attacks. For decades, fair exchange protocols have been extensively studied. However, the recent emergence of blockchain takes fair exchange protocols to a renaissance.

We developed Themis, a fair exchange system for digital currencies. Based on blockchain technology, Themis provides a decentralized digital currency escrow service to provide fair exchange services among digital currencies, digital assets, and physical goods. Themis leverages a novel group escrow protocol, along with threshold encryption, anonymous reputation mechanisms, non-interactive zero-knowledge proof, high performance digital signature algorithms, in order to provide atomic exchange with guaranteed fairness. Also, Themis is able to mitigate DoS attacks, and provide privacy for all peers.


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Website: Visit
White paper: Read
ICO Time: 16 Jan 2018 - 27 Jan 2018
Country: UK
Token info
Ticker: GET
Platform: Ethereum
Token Type: ERC20
ICO Price: 1ETH = 15,000 GET
December 2016

Proposing the concept of Themis, starting market researching and business innovating. Starting the model design of decentrilized for exchange protocol.

August 2017

Publishing the Whitepaper of Themis, launching Themis website.

December 2017

Finishing the blockchain design of Themis, and finishing the development of group escrow protocol and anonymous reputation mechanism.

June 2018

Launching Themis 1.0 version. finishing the development of Themis Wallet 1.0, and supporting the scenarios of OTC trading and p2p escrow payment.

December 2018

Launching Themis 2.0 version, improving performance of Themis, supporting digital signature algorithm with hight-conncurency verification ability, finishing.

Danish Alvi
Participates in a number of projects
Jennifer Chung
Participates in a number of projects
Takuya Koide
Participates in a number of projects
Yuet Ning Chau
Participates in a number of projects
Amir Marat
Participates in a number of projects
James Johnson
Participates in a number of projects
Hubertas Trinkunas
Participates in a number of projects

Advisors (4)

Donald Lawrence
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Daniele Bernardi
Participates in a number of projects
Robert Ferguson
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Chen Zhong
Participates in a number of projects
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