Non-Custodial Wallet

Non-custodial wallet FunC smart contracts.

Targets and Goals

This project was created to allow users to exchange and buy assets in the TON DeFi ecosystem with a jetton (token or currency) that is not subject to volatile fluctuations. To meet regulatory requirements, the issuer of the tokens must have additional control over the tokens.

However, this non-custodial wallet ensures that users maintain full control over their funds, eliminating the need for a master contract and reducing the risk of exploits. This wallet provides the following functionality:

• Users control all their funds; nothing is sent to a master contract.
• Users can lock/unlock their funds within their wallet.

⚠️ It is critically important for users to securely manage their private keys to avoid any potential risks of being hacked. It is highly recommended to use a multi-signature wallet for added security, with private keys stored on different air-gapped hosts or hardware wallets.

⚠️ The contract does not check the code and data on the upgrade message, so it is possible to brick the contract if you send invalid data or code. Therefore, you should always test upgrades on the testnet.

Local Development

Install Dependencies

npm install

Compile Contracts

npm run build

Run Tests

npm run test

Deploy or run another script

npx blueprint run or yarn blueprint run

use Toncenter API:

npx blueprint run --custom https://testnet.toncenter.com/api/v2/ --custom-version v2 --custom-type testnet --custom-key <API_KEY>

API_KEY can be obtained on https://toncenter.com or https://testnet.toncenter.com

Notes

• The non-custodial wallet contract partially include functionality that allows the owner to withdraw Toncoin funds from the wallet's Toncoin balance.
• The contract prices gas based on the current blockchain configuration. It is worth keeping in mind the situation when the configuration has changed at the moment when the message goes from one wallet to another. Reducing fees in a blockchain configuration does not require additional actions. However, increasing fees in a blockchain configuration requires preliminary preparation—e.g., wallets and services must start sending Toncoins for gas in advance based on future parameters.
• If you set the status of the wallet to prohibit receiving jettons, there is no guarantee that when you send jettons to such a wallet, the jettons will bounce back and be credited to the sender. In case of gas shortage, they can be lost.