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Zcash 1.0.8

What is Zcash?

Zcash is an implementation of the "Zerocash" protocol. Based on Bitcoin's code, it intends to offer a far higher standard of privacy through a sophisticated zero-knowledge proving scheme that preserves confidentiality of transaction metadata. Technical details are available in our Protocol Specification.

This software is the Zcash client. It downloads and stores the entire history of Zcash transactions; depending on the speed of your computer and network connection, the synchronization process could take a day or more once the blockchain has reached a significant size.

Security Warnings

See important security warnings in doc/


Zcash is released under the terms of the MIT license. See COPYING for more information or see

Komodo Specific Notes


#The following packages are needed:
sudo apt-get install build-essential pkg-config libcurl-gnutls-dev libc6-dev libevent-dev m4 g++-multilib autoconf libtool ncurses-dev unzip git python zlib1g-dev wget bsdmainutils automake libboost-all-dev libssl-dev libprotobuf-dev protobuf-compiler libqt4-dev libqrencode-dev libdb++-dev ntp ntpdate


git clone
cd komodo

# -j8 uses 8 threads - replace 8 with number of threads you want to use
./zcutil/ -j8
#This can take some time.

to update an existing version, git checkout dPoW if not on that branch already

git pull


./zcutil/ -j8

To reset the blockchain, from ~/.komodo rm -rf blocks chainstate debug.log komodostate db.log

Create komodo.conf

cd ~
mkdir .komodo
cd .komodo
pico komodo.conf
#Add the following lines to the komodo.conf file:


Start mining

#iguana documentation shows how to get the btcpubkey and wifstrs that need to be used

#bitcoin also need to be installed with txindex=1 and with rpc enabled

cd ~
cd komodo

#This will return your pubkey eg. "0259e137e5594cf8287195d13aed816af75bd5c04ae673296b51f66e7e8346e8d8" for your address
./src/komodo-cli validateaddress <yourwalletaddres>

#This will give the privkey of your wallet address
./src/komodo-cli dumpprivkey <yourwalletaddres>

#This will import the privkey to be sure the mined coins are placed into your wallet address
./src/komodo-cli importprivkey <yourwalletprivkey>

#To stop the daemon:
./src/komodo-cli stop

#This starts komodo notary - replace genproclimit with number of threads you want to use and add your pubkey
./src/komodod -gen -genproclimit=2 -notary -pubkey="0259e137e5594cf8287195d13aed816af75bd5c04ae673296b51f66e7e8346e8d8" &

#This will get the stats:
./src/komodo-cli getinfo

#To view the process:
ps -ef | grep komodod

#To stop the daemon:
./src/komodo-cli stop 
#To view komodod output:
tail -f ~/.komodo/debug.log

#To view all command
./src/komodo-cli help

ASSETCHAINS: -ac_name=name -ac_supply=nnnnn

Both komodod and komodo-cli recognize -ac_name=option so you can create a zcash fork from the commandline


Zcash is unfinished and highly experimental. Use at your own risk.

Where do I begin?

We have a guide for joining the main Zcash network:

Need Help?

  • See the documentation at the Zcash Wiki for help and more information.
  • Ask for help on the Zcash forum.

Participation in the Zcash project is subject to a Code of Conduct.


Build Zcash along with most dependencies from source by running ./zcutil/ Currently only Linux is officially supported.


For license information see the file COPYING.

NOTE TO EXCHANGES: There is a small chance that an outbound transaction will give an error due to mismatched values in wallet calculations. There is a -exchange option that you can run komodod with, but make sure to have the entire transaction history under the same -exchange mode. Otherwise you will get wallet conflicts.

To change modes: a) backup all privkeys (launch komodod with -exportdir= and dumpwallet) b) start a totally new sync including wallet.dat, launch with same exportdir c) stop it before it gets too far and import all the privkeys from a) using komodo-cli importwallet filename d) resume sync till it gets to chaintip

For example: ./komodod -exportdir=/tmp & ./komodo-cli dumpwallet example ./komodo-cli stop mv ~/.komodo ~/.komodo.old && mkdir ~/.komodo && cp ~/.komodo.old/komodo.conf ~/.komodo.old/peers.dat ~/.komodo ./komodod -exchange -exportdir=/tmp & ./komodo-cli importwallet /tmp/example