# 3.1. pNFT Overview

pNFT is the starting point of the entire WinFi economic model, serving as a mandatory deposit certificate issued by WinFi through the ERC721 protocol to losing players. It has the following properties:

1. Amount to be returned: the amount of money lost, which is the total amount of money the player has lost in WinFi during the week. The WinFi Fund contract will return an equal or higher amount to the player when the conditions are met.
2. Amount returned: the amount immediately returned to the player by WinFi after losing money during the week. The calculation formula is as follows:

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**BTC initial quantity, price, balance**: When minting pNFT, WinFi uses 20% of the amount returned to buy BTC and store the quantity, price, and balance in the pNFT.

**ETH initial quantity, price, balance**: When minting pNFT, WinFi uses 60% of the amount returned to buy ETH and store the quantity, price, and balance in the pNFT.

**WFT initial quantity, price, balance**: When minting pNFT, WinFi uses 20% of the amount returned to buy WFT and store the quantity, price, and balance in the pNFT.

**Original holder**: The player who initially lost the money.

**Current holde**r: The current owner of the pNFT.

**Withdrawal records**: The record of the player withdrawing the three cryptocurrencies from the pNFT.

***pNFT is minted according to the following rules:***

1. Each player can only mint one pNFT per week. If the player has not minted the pNFT for the current week, it is considered an automatic waiver of the eligibility to mint the pNFT.
2. The NFT attribute parameters are provided by WinFi based on the weekly statistical data of the player and the market status at the time of minting, and are transferred to the player's WEB3 wallet after minting is completed.
3. The fairness of the minting data is guaranteed by WinFi's provable asset tree and verification mechanism.
4. pNFTs that are abandoned by players after minting are owned by the WinFi Foundation to support public welfare and charity.