Updated details [ZEC] ZCASH + Announcing Zcash Cloud Mining

  • Privacy technology for blockchains

    Zcash is the first open, permissionless financial system employing zero-knowledge security.

    The Zcash genesis block will launch in 10 days. Zcash is currently in testnet (testnet coins have no value and will never hold monetary value); our engineering roadmap is publicly available here. If anyone says that they will pay you Zcash before October 28, 2016, then there must be some mistake, because Zcash will not exist until then.

    Please note, Zcash is still an experimental technology, and this is only the beginning of its (hopefully) long life. It is based on peer-reviewed cryptographic research, and built by a world-class, security-focused engineering team, but there is risk involved. We are consistently focused on building and maintaining an open, permissionless system that is viable, robust, and justifiably reliable and secure for users.

    Visit the technology page to learn more about the Zcash protocol, and how to join the Zcash community.

    What is Zcash?

    Zcash offers total payment confidentiality, while still maintaining a decentralized network using a public blockchain. Unlike Bitcoin, Zcash transactions automatically hide the sender, recipient, and value of all transactions on the blockchain. Only those with the correct view key can see the contents. Users have complete control and can opt-in to provide others with their view key at their discretion.

    Zcash transactions do not depend on the cooperation of other parties.

    How does it work?

    Since the contents of Zcash transactions are encrypted and private, the system uses a novel cryptographic method to verify payments.

    Zcash uses a zero-knowledge proof construction called a zk-SNARK, developed by our team of experienced cryptographers. These constructions allow the network to maintain a secure ledger of balances without disclosing the parties or amounts involved. Instead of publicly demonstrating spend-authority and transaction values, the transaction metadata is encrypted and zk-SNARKs are used to prove that nobody is cheating or stealing.

    Who is behind Zcash?

    All of the authors of the Zerocash protocol are on our team, which includes most of the creators of the Zerocoin protocol and leading researchers of zk-SNARKs themselves .



    Zcash is a decentralized and open-source cryptocurrency that offers privacy and selective transparency of transactions. Zcash payments are published on a public blockchain, but the sender, recipient, and amount of a transaction remain private.

    Zcash is based on peer-reviewed cryptographic research, and built by a security-specialized engineering team on an open source platform based on Bitcoin Core's battle-tested codebase. Our improvement over Bitcoin is the addition of privacy. Zcash uses advanced cryptographic techniques, namely zero-knowledge proofs, to guarantee the validity of transactions without revealing additional information about them.

    Our zero-knowledge proving scheme makes it possible to conceal values and other identifying information from the public blockchain. Users simply prove that the values balance out and that they are not double-spending the amount they want to send.

    Download the Tech Preview release here, or get started with our Beta Guide . For more in-depth technical specification, see our developer wiki's specification page.

    See our FAQ for technical, business, governance, economic or general questions.

    Company Values

    The Zcash company aims to set a new standard for privacy through the use of groundbreaking cryptography.

    In an open and programmable financial system, privacy is the only way to ensure fungibility and guarantee that cryptocurrency can be interchangeable as a fluid medium of exchange for users. Companies need the protection of privacy along their supply chain in order to conduct their business, especially in the context of public blockchains. In addition, we believe that personal privacy is necessary for core human values like dignity, intimacy, and morality.

    We are a science-driven team. Our scientists and engineers are the discoverers of the underlying scientific principles and the designers of the protocol; we are not the controllers or the power-holders, and do not control the mining or distribution of Zcash. Every user of Zcash contributes to its decentralization, helping to protect it against failure and corruption. Our team is one among many participants in the network. We created Zcash, but its ultimate destiny lies not in our hands, but in yours.

    Join us!

    Need help? Want more details? Have ideas? We are an inclusive and growing community. Come on in!



    2.5 minute block times, 12.5 ZEC per block

    (so the same 50 ZEC per 10 minutes as Bitcoin)

    - During the first four years, 80% goes to miners and 20% to Founders' Reward (so miners get 10 ZEC per block for first four years, then 6.25 ZEC, and then halving after)

    - During the first ~month, the block reward ramps up linearly from 0.005(ish?) ZEC to 12.5 ZEC
    (the mining slow start)

    Suprnova's Pool:


    Official, public standalone Miner:


    I don't think there's a windows version yet, but it runs fine on linux.

    Be aware that this is a a very slow "test-only" cpu miner, so once a public GPU miner will be available, hashing will be much faster.

    There is no ICO.

    The coin has not launched yet, it will or should launch around 28.th of October, there's testnet currently where miners, pools, transactions etc. are tested.

    Mining is done with a new algo called "Equihash" - it's not compatible with any ASIC, it's currently mineable by CPU and GPU - there are no public miners yet.
    However there is a big open source miner contest here: http://zcashminers.org/ - you can earn up to $30k if you publish your miner.
    The Algo is very slow, about 0.7-1 soltutions (hashes) per second. (Yes, you read that right). I'll be mining it for sure Smiley

    The technology looks interesting and promising, there seems to be a big dev team behind it, it's good to see things are finally getting real.

    Twitter is full with messages about zcash, so it seems to catch attention pretty well, astonished me even more that there's no ANN here.

    I've played around with it a lot and hope to have a full functioning pool up at launch, chances that everything works out and I'll be ready are looking pretty good right now, stay tuned and get yourself informed about the coin.

    I'll update this post once I get more information about miners, pools the exact launch dates, issues and so on...

    Feel free to discuss and post your findings





    You can now mine ZCash Testnet on


    You can use the Standalone Miner provided here:


    Zcash Cloud Mining

    Announcing Zcash Cloud Mining from Zeropond!

    We are building out a datacenter with mining software preloaded onto every machine.



  • GUI Wallets


    raphical user interface wrapper for the ZCash command line tools

    This program is intended to make it easy to work with the ZCash client tools by providing a Graphical User Interface (GUI) that acts as a wrapper and presents the information in a user-friendly manner.

  • Zcash limited pre-order started! on Genesis mining

  • coupon genesis-mining ( zcash ) : o73C6H ๐Ÿ’ฐ๐Ÿ’ฐ๐Ÿ’ฐ๐Ÿ’ฐ๐Ÿ’ฐโœ”โœ”โœ”๏ปฟ

  • New Release Candidate: Less than One Week to Launch

    The Zcash team has been hard at work preparing for the launch, which is on track for the 28th October. Despite some hiccups due to the widespread DNS disruptions on Friday, today we deployed the fourth beta release of the Zcash reference implementation, 1.0.0-rc2, to the testnet.

    The new release includes the following user-visible changes:

    1. Wallet encryption has been disabled. The reasons for disabling this feature for the time being are explained in our security warnings document. We recommend using full disk encryption for now instead. (#1552)
    2. We have included mitigations for security issues found by the NCC Group and Coinspect audits. (#1459, #1464, #1504)
    3. We have merged some changes from Bitcoin to help address potential denial-of-service vulnerabilities. (#1588, #1589, #1591)
    4. A bug that could cause assertion failures when restarting after a crash has been fixed. (#1378)
    5. A more efficient CPU Equihash solver written by John Tromp has been integrated into the built-in miner. This is not used by default, but can be enabled by adding equihashsolver=tromp to zcash.conf. Thanks go to John Tromp, and to @sarath-hotspot for providing the impetus for this improvement. (#1570, #1578)
    6. Running the node now displays a screen showing node metrics (and some pretty ASCII art โ˜บ). (#1375)
    7. The consensus rules have been tightened to reject block and transaction versions that were previously used by Bitcoin but are not valid for Zcash. (#1556, #1600)
    8. The testnet now enforces the same rules on standard transactions as will be enforced on mainnet. (#1582, #1557)
    9. We have made changes to the getblocktemplate RPC call to support mining pools. (#1424, #1602)
    10. Improved support for deterministic builds. (#1549)
    11. Build fixes for the musl C library used by Alpine Linux. (#1558)
    12. Documentation improvements. (#1500, #1575)

    For a more complete list of changes, see our 1.0.0-rc2 release github milestone.

    This release resets the beta testnet. It continues to use the beta 2 proving and verify keys.

    To follow our progress, watch the GitHub project and join the forum. To get an email announcement when Zcash Sprout is ready, put your email address in here.

  • {NiceHash} Zcash CPU/GPU miner for Linux and Windows

    Download windows binaries here.

    Linux build instructions are here.

    As you might already know, NiceHash will support Zcash from day one (28th of the October).
    We are pushing boundaries and working around the clock so that we can offer you something user friendly in the front but beast in the back.

    Current tests are showing between 5 and 10 H/s for CPU miner. GPU development isn't far behind.
    If all that won't be enough for you, you'll still be able to rent hashing power to mine Zcash - on demand and with no contracts.

    Stay tuned as our testers say it's worth it.

  • New Release Candidate: Final zk-SNARK parameters

    Daira Hopwood | Oct 27, 2016

    The Zcash team has been working to finalize the software for the launch of the Zcash block chain. We are planning to make the launch release available on the morning (PDT) of 28th October, subject to any last-minute technical hitches.

    Over last weekend the final zk-SNARK parameters were created in the Parameter Generation Ceremony. The transcripts and software used for the ceremony have been published, and we'll be making another post with more information on that very soon.

    We encourage everyone to test this latest 1.0.0-rc4 release by following the Beta Guide. That will also make sure that you are able to run the software on your system, and have the zk-SNARK parameters (a ~910 MB download) ready for launch.

    Two Releases

    As part of a strategy to reduce technical risk and to ensure auditability, we have made two releases within a day of each other. Most users should skip from 1.0.0-rc2 directly to 1.0.0-rc4.

    1.0.0-rc3 - bug fixes and dependency upgrades

    The intermediate 1.0.0-rc3 release included only bug fixes, and updates of libraries that Zcash depends on:

    1. The node metrics screen added in the rc2 release caused a bug when the output was not directed to a terminal, which has been corrected. (#1612)
    2. The version of Berkeley DB has been updated to 6.2.23. (#1637)
    3. The tinyformat library was updated in order to mitigate a potential buffer overflow vulnerability. (#1640, #1349)
    4. A fix for a minor potential race condition was backported from Bitcoin. (#1634)
    5. A couple of portability problems with the fetch-params.sh script and the Debian packages have been fixed. (#1053, #1537, #1613)
    6. We have eliminated an error-prone case and a confusing error message when spending part of a coinbase output (e.g. mining reward). As a consequence it is now necessary to spend coinbase outputs exactly so that there is no change; the node will not implicitly select a change address. (#1616)
    7. Updates to documentation and examples. (#826, #965, #1152, #1154, #1643)
    8. Network bootstrapping for mainnet. (#1369)

    1.0.0-rc4 - zkSNARK Params and Founders' Reward Addresses

    The 1.0.0-rc4 release, which is the one now deployed on the testnet, made some final updates in preparation for the Zcash launch:

    1. The zk-SNARK parameters have been updated to the ones created by the ceremony performed last weekend.
    2. The Founders' Reward addresses for mainnet have also been updated.

    For a more complete list of changes, see our 1.0.0-rc3 and 1.0.0-rc4 release github milestones.

    Imminent Launch

    In the remaining time before launch, we will only make further changes if they are necessary to correct critical problems that would be an obstacle to Zcash launching successfully. If all goes to plan, the only thing remaining is the mainnet genesis block โ€” the code is done!

    It takes some time to generate the genesis block, and build the binaries. We're going to mint the genesis block and prepare binaries etc. the night before (i.e. this evening, Thursday, Oct 27), and then go to sleep. Then we will get up and release it the next morning, San Francisco time. Keep an eye on our Twitter feed!

    To follow our progress, watch the GitHub project and join the forum. To get an email announcement when Zcash Sprout is ready, put your email address in here.