We will be making an announcement in roughly a week's time

Anyway you can always follow our github (and its various branches) to see what we are working on.

Yes but if it's encrypted make sure to type walletpassphrase YOURPASSPHRASE 60 first.

Then type importprivkey YOURPRIVKEY

If you're still having problems we need the error details.

This is all typed in the Debug window by going to Help

In Windows open your process manager and make sure Zcoin is not running anywhere.

Go into your .zcoin folder and delete the .lock file.

What OS and version  ? And where did you download from ? Did you check if it is your antivirus? It should be nothing to do with the app if you extract it and it disappears since it is packaged normally .

The Bitcoin core upgrade is actually already underway and will be pushed to a separate branch for us to work on. This should improve the wallet experience tremendously and open the way for light wallets.

As mentioned previously this was scheduled for right after MTP but we are already halfway through it.

No fixed date but MTP is functional and working with the new code but we're just double checking some things.

Should be deployed on testnet pretty soon.

have gotten your e-mail. These sort of issues are better solved through chat so let us know and we'll be happy to look into it. We haven't replicated it in our end but would be happy to look into your issue.

Please advise on your OS version and whether your wallet.dat is new or old and if there's funds in there.

https://news.bitcoin.com/zero-knowledge-zcoin-launching-soon/



Check the disclaimer on his own site bitcoin.com. Also before u ask, Moneta was never launched. Moneta was rebranded as Zcoin before launch to reflect that we're the first implementation of Zerocoin. Also, we have his quote on our main website as a Zcoin investor so I don't think we would have the balls to say it if it wasn't true.

As to why Roger has been apparently silent, he's been mentioning us at talks, social media and also Youtube videos (there's a few about) and we have been working with him to launch something but yeah I don't want to say too much for fear of saying that we are saying things to hype price ;P. So don't look too deeply into this . He also created a sub forum for us on bitcoin.com. Note that Roger is also an investor of Zcash. His involvement will be more apparent once the time is right but Roger is a polarizing figure in the crypto space as you are all aware but has always been a big supporter of financial privacy.

You can see his Reddit post on his memorydealers account here:

https://www.reddit.com/r/zcoin/comments/5xzc8b/roger_vers_list_of_bitcoin_competitors_zcoin/

Yes the Coinomi wallet works awesome because it's a light wallet implementation which we would also have again with the Bitcoin core upgrade. A Bitcoin core upgrade would have costed us another 1-2 months and have MTP branded as vaporware so yeah I know it may seem strange on the decision and if investors were not hounding us for MTP, it would have definitely been our preference to work on the core and wallet upgrade as it is our immediate priority right after this.

However Leoreinaux's work was quite substantial and has helped a lot. The latest pushes also fix a lot of things. Also aizensou's work on znode.io also helped people in getting it synced. I'm not denying that logically, it makes sense for core upgrade before MTP and again, immediate priority after this over all else. Also for those of you asking for Znodes, the core upgrade is also a prereq for that ;P.

If anything, the mistake was made many months ago in committing to a release date for an undertaking as big and complex as this and I can say safely EVERY SINGLE DAY, we get bombarded with when is MTP coming. Some of our internal release targets when we were communicating with some of the community to keep them informed were instead spread as deadlines so it put a lot of pressure on us. Lessons learnt:P

For the Ethereum integration mixing. We will show the work in progress soon. You probably missed that we got ourselves a Solidity developer, Tadhg Riordan (@riordant) that has worked on something similar for zk-SNARKs before https://zcoin.io/tadhg-riordan-joins-the-zcoin-team-as-solidity-developer-for-ethereum-mixer/. This isn't an immediate priority but it is something we are definitely working on and have dedicated some resources to it.

You are right that indeed the Zcoin wallet experience is not where we want to be. The Zcoin wallet issues on syncing we have identified stemmed from three main issues. The first is the old Bitcoin core which we are upgrading right after MTP as our push towards Znodes but to solve the immediate issue we ported some code over from 0.13 You can see the original Bitcoin core issue listed here: https://github.com/bitcoin/bitcoin/issues/4353. The second issue is the Zerocoin verification which we believe we have identified the bug and pushed a fix but it's still a WIP. The third is that multi threaded verification is not in just yet so only one core is being pushed so there's a lot of room of optimization here. This can be focused on a lot more after MTP release since it's a prereq for Znodes.

Previously with only Poramin, Saran and Aizensou busy working on MTP which is an immense undertaking since it was coded from the ground up, we didn't have the necessary resources to focus on everything we wanted to. Even djm34 helped us out a lot since his work is dependent on MTP being launched. However with more developers coming on board and Leandro (leoreinaux) joining the team we are rapidly expanding our dev team so that we can deal with several issues at once. The guys who have been following the code on our github on the MTPTest branch can see how much work  has been done where whole sections were totally reworked. We understand the frustration but you'll see it soon enough. The team thinks it's pretty soon . Original development takes a lot more resources and we had to make a decision as to whether to focus on MTP which many people are waiting for or fix the wallet experience so it was a tough call then. We've learned from this especially when trying to estimate time needed for original development as compared to when porting code over from other projects. With more devs on board and people willing to work for us, this should sort itself out soon. Our cryptography advisor Tim Ruffing is also working on looking at libzerocoin.

For the incentivized nodes, it's more about the Zerocoin verification part and providing a layer to build on to work on things like a decentralized market place. Zerocoin verification currently is quite resource intensive and we wanted to offload that to incentivized nodes. This may become more important when we move to Sigma as despite the proof sizes we have yet to see the performance impact it has. The difference between our incentivized nodes scheme and other masternode like systems is that you don't have to trust any single masternode to maintain your privacy due to the cryptography we use. A Znode cannot 'spy' on your mixes due to the zk-proof unlike in coinjoin. We don't deny that it will help to provide price stability but it isn't the sole reason but that will be the easiest part to implement. Why we cannot provide exact figures as to how many coins you need for a Znode is simply because as you have seen, the price is so fluid and we need to cut a balance between keeping the bar high-ish without making it inaccessible. It will only be clearer once we get closer to release then we can make a more educated decision then. There have been some figures thrown around but yeah that's just speculation at the moment.

Try the latest one? I think the one you have is pretty old.

https://github.com/zcoinofficial/zcoin/releases/tag/v0.8.7.8

L seems to be 70 in the paper.

https://www.usenix.org/system/files/conference/usenixsecurity16/sec16_paper_biryukov.pdf


Where did you get the 140 figure from?

You have no funds in your wallet at the moment, correct? If so, please delete all files in the Application Support/Zcoin folder and download the pre-release dmg for Mac OS here:
https://github.com/zcoinofficial/zcoin/releases/tag/v0.8.7.8

If you have funds in your wallet, please backup your wallet.dat before proceeding. Note that the first sync of the wallet will take about 1 day.

Could you let me know your Mac OS version?

And when did you download the mac version? Does your Application Support/Zcoin have existing files inside?

We will be listing on a couple of new exchanges soon.

Thanks we're coming up with an animated video to explain this too

New accumulators can be introduced without issues It would be a good problem to have.

Awesome mjosephs! The params have changed. You can view the latest code here:

https://github.com/zcoinofficial/zcoin/tree/mtptest

https://github.com/zcoinofficial/zcoin/commit/5b6d2941616e756051ec584085297cc691a5614e

These probably will be the final parameters that we're working on for the release.

Please do drop by our Slack http://invite.zcoin.io and head to #developers

Where have u been @ocminer miss ya

Always a good idea to store it off an exchange.

If you're just a casual holder and have an Android phone you can also use Coinomi which also has Zcoin support then you don't have to worry about syncing but you won't have the features of Zerocoin minting and spending.
It has recovery seed support.