2018/02/08:Bitcoin Candy mainnet officially released,source codewalletmining softwarepool.

2018/02/08:Change to top-level domain

2018/02/09:Bitpie wallet officially support CDY


Among the many questions about bitcoin, the rapid development of quantum computers is like a dark cloud far away from the horizon, which seems distant but disturbing.

Bitcoin Candy team will fork Bitcoin Cash at block height 512666, after which some of the improvements proposed by the community will be added to the forked chain. On this new chain we are going to explore anti-quantum attacks solution of bitcoin based on our cryptography background.

Only when we put talk into action can we make bitcoin (cash) great again




block interval adjusted to two minutes


Lower threshold

Total supply adjusted to 21 billion



Equihash(GPU) PoW algorithm



No segwit
Anti-quantum attack exploration

Hardfork height 512666(Bitcoin Cash)
Estimated hardfork time 2018/01/13
PoW algorithm EQUIHASH(GPU)
Supply 21 billion
Distribution ratio 1:1000
pre-mine Yes, 1% of supply will be pre-mined
Block interval 2 minutes
Replay protection Yes
Block size 8M
Segwit No
Difficulty adjustment DAA



Shifeng Zhao

Angel investor, Bitcoin investor

Yang Tan

Doctor of cryptography
(former)PA-tech, Blockchain senior researcher

Jiahui Chen

Doctor of cryptography
National University of Singapore, Researcher

Niu Liu

Doctor of cryptography

Zhiniang Peng

Doctor of cryptography
Cyber security researcher


Mysterious One


Founder of Viabtc and Coinex


What is CDY?

Bitcoin Candy(CDY) is a new chain forked from Bitcoin Cash at the height of 512666. The original BCH holders will be compensated with 1000 CDY for every BCH held. New features will be added to the forked chain and we will explore anti-quantum attacks solution on this chain.

What is anti-quantum attacks thing?

In the past few years, D-Wave, IBM, Intel and other technological giants invest a lot of manpower and resources to increase research and development of quantum computers, i.e., Google have embedded D-Wave quantum computer into its cloud platform; the research team under Prof. Pan Weijian in Chinese University of Technology have made breakthrough achievements in quantum communications. Under such circumstance, the quantum age will no longer stay in science fiction conjecture (perhaps 5-10 years will come).
The development of quantum computer will not only bring great changes to people's lives, but also pose a serious threat to traditional public key cryptography. Public key cryptosystems such as ECDSA and RSA will be solved in polynomial time by these quantum computers. So, virtual currency like Bitcoin which use ECDSA as a signature algorithm will become unsafe. To find post-quantum digital signature algorithm is of vital important.
Our team has a deep post-quantum cryptography background and will conduct research and experiments on the CDY chain for practical public key signature algorithms in the post-quantum-era blockchain.

Why forked from BCH, can BTC holders get free CDY?

On August 1, 2017, Bitcoin community finally ended its years-long expansion war by splitting the original bitcoin into two chains, Bitcoin cash (BCH) and segwit Bitcoin (inheriting BTC ticker). We think BCH is more in line with Satoshi Nakamoto's vision of bitcoin "a peer-to-peer electronic cash system" and will have a brighter future.
Only who hold BCH at height 512666(about January 13 ) can get free CDY at the rate of 1BCH : 1000CDY.

What is the total supply of CDY?

CDY will have a total supply of 21 billion, of which 1% will be pre-mined.

How to claim my free CDY?

To get free CDY, you need to hold Bitcoin Cash before height 512666 (about January 13).
1.If your BCH is stored in a wallet where you can control private key yourself, you will definitely get free CDY. Just waiting for the wallet developer to provide feature to claim.
2.If your BCH is stored in the exchange, the exchange will receive free CDY, please pay attention whether the exchange will provide CDY's collection function or not.If the exchange you store BCH does not support CDY, to avoid the loss of assets it is recommended to withdraw BCH to a wallet which you can contral private key or to exchanges that support CDY.



To be determined:
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