A set of Ethereum Smart Contracts for saving & finance managenment.

An Ethereum Smart Contract that allows you to save ETH in it until a timestamp is reached on the blockchain.

Engage the deposit function as payable with a timestamp to deposit ETH. You may make further deposits and either increase or keep the existing timestamp. A 0.5% deposit fee is charged.

Engage withdraw after the timestamp with the same address you deposited with to initiate withdrawal.

An Ethereum Smart Contract that allows you to save ETH in it until a timestamp is reached on the blockchain, or allows early withdrawal with a 10% fee.

Engage the deposit function as payable with a timestamp to deposit ETH. You may make further deposits and either increase or keep the existing timestamp. No fee is charged.

Withdrawal accepts an allowEarly boolean to say if the withdrawal is permitted if the timestamp hasn't expired. If you attempt to withdraw early without the allowEarly parameter set to true the transaction will fail.

Engage withdraw with false on the allowEarly parameter after the timestamp with the same address you deposited with to initiate withdrawal with no penalty.

Engage withdraw with true on the allowEarly parameter with the same address you deposited with to initiate withdrawal with a 10% penalty.

Install like a node package

npm i

To test the contracts, you'll need to run Ganache (download from here if you don't have it)

Then just run

npm run test