ADA Cash

A Distributed App (DApp) on the Cardano blockchain to convert digital ADA to paper ADA.

Use Cases

1. Use cryptocurrency without Internet connection or a Mobile device.
2. No fee offline transactions.
3. Simple and robust counterfeit prevention method.
4. Promotes the “currency” aspect of a cryptocurrency.

Types of Users

1. Sender / Depositor / Minter
2. Recipient / Receiver
3. Redeemer / Burner

How it works?

• The user inputs the amount to be converted to cash.
• The user selects the denominations they want in lieu of that amount.
• The user then transfers the given amount of funds from their wallet to the smart contract.
• The smart contract issues redeemable bills with unique hashes.
• The hashes on those bills encode the amount of the bill.

Smart Contract Endpoints

Mint

The user deposits fund to the smart contract and selects denominations to be issued.

Redeemable

The user uses the mobile app to confirm that the note/bill is redeemable. This action does not redeem the denoted value from the smart contract.

Redeem

The user uses the mobile app to scan the notes hashes to redeem funds from the smart contract to their own wallet.

Technology Stack

1. Aiken (Smart contract Language)
2. Lucid (Off Chain Language)