We wish to Inform you of the Update, HardFork and Rollback of ClassicBitcoin CBTC.

The ClassicBitcoin network has been Updated to a Hybrid ‘Bitcoin – ZClassic Fork Merger’
A Few Technical details of the Hard Fork are as follows:

  • CBTC currency format changed from 4 decimals to 8 decimals (10000.0000 CBTC now equals 1.00000000 CBTC)
  • ClassicBitcoin oldchain Snapshot Height :536000 (Rollback height)
  • ZClassic snapshot height: 472028
  • Bitcoin Fork height: 516095
  • Solo Mining Enabled for the ClassicBitcoin Community and to better Secure the Network.
  • Faster Block Times of 2.5 minutes.
  • Lower Block Reward (0.75CBTC per Block) to Control Coin Supply.
  • The New CBTC Data Requirement now only 20GB (10%) it is safe to remove the old block data after taking backups See here for a proper procedure of backup keys and transaction data.

as the blockchain was rolled backed to block 536000, most of the traders trying to sell CBTC who deposited coins to your exchange will most likely see their coins back in their wallet.

please note that the decimal has been returned to 8 decimal points
1 CBTC is now 0.00010000 and 10000.0000 CBTC is now 1.00000000 CBTC

ClassicBitcoin Source Code on github https://github.com/classicbitcoins/cbitcoin.git

Download ClassicBitcoin Windows64bit wallet https://github.com/ClassicBitcoins/classicbitcoin/archive/master.zip


Next Steps to Upgrade/Collect your Swap coins are:

1. Backup your Wallet and copy your Unspent Transactions ID’s

The most common methods of backing up your wallet include
backing up a wallet.dat file. this is a file that holds private keys to spend outputs, addresses, transaction information.
it has different location based on an operating system,
Windows: %APPDATA%\CBitcoin
Linux: ~/.cbitcoin/
Mac OS X: ~/Library/Application Support/CBitcoin/
if you need more help finding this folder, see this link for more information
locate wallet.dat and securely copy it to another device only you have an access to.
note that Anyone that gets access to the unencrypted file will be able to steal your coins.
To restore the backup, simply copy your backed up wallet.dat over an existing one in the bitcoin data location.

BIP 32 is a method of determining key pairs from a single seed. This seed is used to generate a master private key (xprv) which then can be imported to any BIP 32 compliant HD wallet.
To backup your wallet either copy the master key to a text file and back it up to another device (encrypted of course) or create a QR code, print it and store it somewhere safe
To restore the backup, simply paste the xprv string to your wallet when asked to

Users who received CBTC after the FORK block block 536000(september 31’st 2018) will need to fill a form with a list of all their unspent transaction id’s to get their swap coins.

you can list your unspent transactions by running ./cbtc-cli listunspent

3. Install the New ClassicBitcoin ZClassic Fork Software for your operating system

Download ClassicBitcoin Source Code on github

Download ClassicBitcoin Windows64bit wallet

you will need to also download the ZCashParams Keys file (~ 800mb)

4. Run cbtcd import your wallet backup, swap all your coins to a newly generated address and start mining to help secure the Network.

if you don not see your funds after synchronising your wallet, dont panic, it just means you received coins after the fork block(536000) and you will need to fill a form with your unspent TX ID to receive your Swap Coins.

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