Oracle

In Shell Finance, the third-party price oracle provides fixed-frequency price-feeding services and participates as a third party in secret generation and disclosure in the DLC mechanism.

As shown in the diagram, the price oracle participates in the protocol process in the following scenarios:

• When a user initiates a lending position, the protocol calculates the collateral value and collateral ratio based on real-time Oracle quotes to determine the upper limit of the loan. Additionally, a secret value will be initialized for the position.

• When a user adjusts/closes a lending position, the protocol recalculates the collateral value and ratio based on real-time Oracle quotes and determines the updates to the collateral assets/debt status. Additionally, a secret value will be initialized for the position.

• When the price reaches the liquidation price of one or more positions, the price oracle will disclose the corresponding secrets to the liquidators in a format similar to the following:

[
    {
        "announcement": "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",
        "asset_pair": "ORDI_BTC",
        "attestation": "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",
        "maturation": "2024-05-31T08:00:00Z",
        "outcome": 224,900
    }
]