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  Screenshot of the create token page. Users can set the name of the index token, the symbol, and the percentages of each underlying asset

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  Testing the 1% per year fee that a creator can claim on hardhat using a fork of the Fantom Mainnet.

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  Issuing new tokens, underlying assets can be seen being transferred to the index contract

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  Testing the rebalance function. Underlying tokens are swapped on Spookyswap for a specified amount, and the ratio of each asset changes.

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  Early sketch of the Pumpkin Protocol.

🎃Pumpkin Index 🎃

What is an index token?

❓ An index token is like a basket that holds many different types of cryptocurrencies at once, allowing investors to invest in several cryptocurrencies through one token.

Inspiration

👻 Fantom network currently does not have any Index Tokens.

🧟 We took inspiration from TokenSets / Set Protocol and recreated it without any fees.

What it does

🎃 Lets users create & manage their own index tokens

🧙 Redeem index tokens for underlying assets

🧛‍♂️ Creators can collect a custom streaming fee from 0 to 1% per year

🍬 Others can buy these tokens on a decentralized exchange

🔪 Adjust/rebalance each portion of underlying tokens in an index token

How we built it

🕯️ Wrote the solidity smart contract from the ground up

✨ Integrated SpookySwap for token rebalancing

🧪 Tested by forking Fantom Mainnet using Hardhat

Challenges we ran into

🧮 Algorithms to transfer a streaming fee from all token holders to the creator

📐 Mathematics for how much to calculate % of underlying tokens

Accomplishments that we're proud of

🔮 Calculated necessary values to execute trades

⚰️ Successfully Rebasing tokens

👽 Integrating the Smart Contracts & Website together (a lot of trial and error)

What we learned

🧠 Learning more about solidity math

🌃 Learning about the Fantom Ecosystem

What's next for Pumpkin Index

🍂Gas optimization

🐺 Security Improvements

🧑 UX Improvements

Try it yourself!

Walkthrough

Built With

• hardhat
• javascript
• nextjs
• remix
• solidity