Themis is a blockchain-based fair exchange system for digital currencies, providing a decentralized escrow service for digital currencies.
Themis is a decentralized system which provides third-party escrow services and dispute resolution services to bring fairness to exchanges in which one or both parties are using digital currencies as subject matter. Technically, Themis should satisfy following requirements.
Current centralized coin exchanges and decentralized coin exchanges are focusing on transactions between digital currencies, but paying little attention to satisfy the requirements of fair exchanges between digital currencies and physical goods. During the transaction between digital currencies and physical goods, it’s hard to achieve transaction and delivery at the same time, thus the fairness of atomic exchanges face a challenge: a buyer doesn't want to pay without assurance that the seller will ship the purchased goods, while a seller doesn't want to ship without assurance of that payment.
Traditionally, a trusted third party is required for hosting transaction funds and arbitration, and during the period between transaction and delivery, the third-party needs to host buyers’ transaction funds to satisfy fairness.
The Themis blockchain (aka. Themischain) is designed to provide a third-party escrow service (like the role that Alipay plays in online shopping). Themischain issues a token named Global Escrow Token (GET). Themischain motivates the blockchain peers by using an incentive mechanism which takes both deposit and reputation into consideration.
Peers who take active part in escrow and arbitration will obtain a reward. When people use escrow services and arbitration services provided by Themischain peers, they pay GETs to the peers. And, if Themischain peers participate in arbitration, they earn GETs as well. Themis makes peer-to-peer fair exchange happen not only among digital currencies but also between digital assets and physical assets by escrow contract and arbitration contract.
Fair Exchange via Group Escrow
Themis ensures that mutual trustless entities complete the exchange of assets in accordance with the prior agreement: Either both parties can get the corresponding goods, or both parties get nothing.
Anonymous Reputation Mechanism based on Verifiable Shuffles and Linkable Ring Signatures:
Themis utilizes the verifiable shuffles and the linkable ring signatures to achieve the calculation of reputation anonymously.
Non-Interactive Zero-Knowledge Proof
Themis utilizes Non-Interactive Zero-Knowledge Proof to solve privacy problems. Foremost is to ensure that the secret shares offered to mediators by both transaction parties are true.
Digital Signature Algorithm with High-concurrency Verification Ability
Themis program involves a new digital signature algorithm with high-concurrency verification ability. Themis supports variety of digital signature schemes, such as a hash-based one-time signature algorithm, a specific elliptic curve and verification algorithm and etc.
|Round||Token Price||Bonus||Min / Max Purchase||Soft Cap||Hard Cap|
Public sale —
End 19 Apr 00:00 UTC
|0.0363 USD||No||-||Uncapped||22,000 ETH|
Started the design of fair exchange protoocl
Finished the MVP version
Internal test of decentralized escrow service
Launch the Themischain test net
Launch the Themischain main net