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How Does Sirius Work?

Sirius DEX operates as a decentralized exchange (DEX) for two assets: Tez (XTZ) and tzBTC. It combines standard DeFi DEX features with unique protocol-level incentives, making it especially attractive for liquidity providers.


Sirius functions like any other decentralized exchange, but it exclusively facilitates trades between two assets: XTZ and tzBTC.

  • Trading Fees: Traders pay a 0.2% fee (20 basis points) on each transaction.
    • 0.1% is burned, reducing the total XTZ supply.
    • 0.1% is added to the liquidity pool, increasing its value for liquidity providers.

Liquidity providers (LPs) supply equal amounts of XTZ and tzBTC to the pool and are rewarded in two ways:

  1. Transaction Fees:

    • LPs earn a proportional share of the 0.1% fee retained in the pool from every trade. This is distributed based on their contribution to the total pool liquidity.
  2. Protocol-Level Subsidy:

    • The Tezos protocol directly subsidizes liquidity providers with 5 tez per block.
    • This subsidy is distributed proportionally among all LPs based on their share of the pool.