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<h2>The first is to "law enforcement", to track incorrect bit coin transactions related to criminal acts.</h2>

Bit coins are often exploited by a random-threat attack (forcing the user's data to encrypt) and forcing it to decrypt (decrypt) it. .

WannaCry, notoriously a worm-type rangers wear, illegally robbed bit coins equivalent to $ 25 million (about 2.75 billion yen) in two years.

The creator of WannaCry has not been arrested despite its magnitude of damage (about 440 billion yen).

According to the Crystal team, the attack itself claims that "it was able to be tracked within 3 hours," to the virtual currency exchange, "It is possible to order suspended transactions on suspicious wallet addresses" I will.

<h2>The second use case is "compliance measures" and "risk management tool" for financial institutions.</h2>

Crystal's case study is to use bit coin-based venture capital for the medical sector.

The purpose of the tool here is to prove correctly the compliance with the rules for state sanctions, terror financing, money laundering.

By proving the transparency of the source of funds and the destination, we can prove compliance with domestic law.

This makes it possible to prevent venture capital funds and risks of litigation against their basic assets in advance.

Furthermore, Crystal also confirms that the mining work is not a pongee scheme, and also appeals "auditing abilities" to prevent corruption (bribery through bit coins) by officials elected by free voting.

<h2>The Crystal tool is part of an ongoing effort aimed at making the block chain non-anonymous by the BitFury group.</h2>

As of the beginning of 2018, the BitFury group announced the progress of a new method to group related wallets.

We also issue detailed white papers that explain the probabilistic model to examine using off-chain data to determine the relevant addresses with "gambling, mining pool, drug trafficking".

This white paper issued about a month ago has already been said to successfully "non-anonymize" about 15% of the block chain.

According to marketing materials, actual usage has already begun, and it is highly likely that it affected several profile surveys.

The most meaningful development in Crystal is "automated risk scoring" and it is suggested that it may be implemented by major exchanges in the near future.

<h2>Bitfury's development of bit coin's block chain non-anonymous has the potential to further complement the attractiveness of virtual currencies that place importance on security.</h2>

We have witnessed the case where malicious "multi-ware developers" transfer funds to exchanges from bit coins to hard-to-track virtual currencies (such as Monero).

By using Crystal, many RANSWEAR developers believe that it will be forced to settle in other currencies in order to avoid real-time trading suspension by the virtual currency exchange and ultimately be forced back to the dollar It is.