future crypto currency idea:

For a currency to be usable it must:
be anonymously tradable
be unduplicatable
have a consistent positive value
finally, be of a limited quantity

crypto has 2 out of 4.. but so does the US dollar


The future is a physical media with a cryptographic component backed by a network component.
Introducing: the crypto coin.

Coins have a hollow center filled with a resin and grown crystal compound
which has 100% unique, impossible to duplicate patterns when illuminated
via a holographic laser reader(multiple lasers from different angles creating
a unique interference map on the sensor below). The patterns are impossible
to duplicate because they cannot be fabricated(crystal structure is 100% unique
and grown inside the coin during manufacture) or emulated(3d holographic reader prevents
the creation of a 2d simulated material that could duplicate the interference map).

coins have a tiny chip and a wireless rfid antenna.

The chip is used to communicate with any RFID compatible device.
The chip outputs a simple code which is a derived product created from the unique hash
of the chip's interference pattern and an initial string at the head of the blockchain.
the chip also outputs a transaction id and hash created when it is entered into
the blockchain.

each time a new coin is created, it is programmed with codes that are derived from
the blockchain and the unique interference map, so that each coin represents both
a unique physical entity and a unique blockchain coin "like a bitcoin".

The blockchain is created in such a way that the number of coins generatable is limited by cryptographic
challenges to a specific number, and then physical coins are minted, hashed, their products stored on
the chip, and the blockchain updated.

To verify the coin is genuine, the user needs the special laser and rfid reading device.
To verify the coin isn't simply being printed en-masse by the source, the user must simply look up
the blockchain to see how many coins exist.

The value of the coin at this point is arbitrary and established between the users.
However, blockchains as well as other systems such as banks agreeing to honor it as having
a specific value or financial trading groups backing it with metals could achieve a net positive value for the currency.