Dutch Auction Logic

Trestle uses an automated Dutch Auction system for digital goods and freelance services. This model eliminates the need for complex order books and continuous on-chain writes.

How It Works

The price of an item starts at a startingPrice and decreases linearly over time until it is claimed or reaches a floorPrice.

Price Formula

function getPrice(uint256 startTime, uint256 discountRate) public view returns (uint256) {
    uint256 timeElapsed = block.timestamp - startTime;
    uint256 priceDrop = discountRate * timeElapsed;
    uint256 currentPrice = startingPrice - priceDrop;

    // Ensure price doesn't drop below floor
    return currentPrice < floorPrice ? floorPrice : currentPrice;
}

Vertical Markets

Market	Description
Digital Goods	E-books, licenses, templates: high initial price dropping to floor
Freelance Services	Milestone escrows: peak rate decreases until buyer engages
Digital RWAs	Fractional property: auction finds fair market value

Key Benefits

• Gas-efficient - Single on-chain write at listing and purchase; reads are off-chain
• No order books - Price discovery via time decay
• Testnet-first - Operations run on Polygon Amoy with faucet-funded gas