Implementation of Sapling + VaultZ Proposal at 5.00% Blockchain Reward

cryptorex · April 13, 2019, 2:00am

This post will outline the necessary steps required to execute the VaultZ proposal. It is meant to be an all encompassing detail focused publication of the efforts required, and to be undertaken by the team, to carry the VaultZ proposal from planning through execution, implementation, and monitoring phases.

Additionally, we will be required to update to at least Groth16 proving method, over the past weeks @renuzit has worked tirelessly to implement zcash core updates into BitcoinZ. Read further for more details.

For details on the VaultZ proposal please see:

VaultZ Proposal
Percentage for VaultZ

For details on the zkSNARKs Sprout vulnerability please see:

BitcoinZ Current zkSNARKs Proving Method

Meeting Type	Date	Discussion
Preliminary	Sept 30th, 2018	General discussion regarding efforts required for proposal implementation
Plan / Identify	Nov 3rd, 2018	Discuss beginning of testing phase and required components; as well as any obstacles and discoveries during self-testing / code review
	Notes:	Created todo list
		Reached out to exchanges to determine support (pending responses)
		Discussed when sapling integration would make most sense
		Discussed ‘DynamicZ’ - a StealthWerkZ project
		Identified critical testing components: Testnet node, Explorer, Pools, Replay protection
		Re-introduce community fee code into core node
		Preliminary timeline for minimal functional testing: 2-4 weeks
		Update required to Groth16 zkSNARKs proving method at a minimum / Sapling codebase
Execution	March 1st, 2019	Begin deploying test environments for testing of block reward change; and any components required for minimal functionality
	Notes:	COMPLETED : Sapling + VaultZ Master branch Github
		COMPLETED : Testnet Pool: http://testsnomp.btcz.rocks:8080/stats
		COMPLETED : Testnet Explorer: Iquidus / Insight
		COMPLETED : Re-introduce community fee code into core node
	Next steps:	Wallet systems: Win Binaries, Copay, etc
		March 17th, 2019
		1. shielded coinbase coins using z_shieldcoinbase" from multisig one -
		“t2FpKCWt95LAPVRed61YbBny9yz5nqexLGN” to a sapling z-address
		2. sent from sapling z address to single wallet tmQaL15dnng34TNknZiedx9qjRpaHihJMT6
		3. sent from t single wallet tmQaL15dnng34TNknZiedx9qjRpaHihJMT6 to sprout z-address
		4. sent from sprout z-address to tmQaL15dnng34TNknZiedx9qjRpaHihJMT6
		5. tried to send between Sapling -> Sprout and was denied, as it should be denied
		6. Mined blocks and the 5% block reward split is being sent to community fee addresses as intended
		March 24th, 2019
		COMPLETED:
		Production release: Activation on April 6/7th @ Block 328,500
		BitcoinZ v2.0.3 (Sapling + VaultZ) - Debian, Linux x64, Windows CLI x64
		BitcoinZ v2.0.3 Win GUI Wallet
	Notes:	PENDING: Insight Explorer, CoPay Wallet, Web Wallet, Paper Wallet sites
	Notes:	These systems will be ready by the activation height
		Partially moving to Implementation phase
Implementation	March 23rd, 2019	Network updates completed: Iquidus Explorer Seeder nodes Windows GUI Swing wallet Coinomi Wallet ZelCore Wallet CoPay Insight Web wallet
		Pending network updates: Paper Wallet
Monitoring	April 7th, 2019	Upgrade activated (VaultZ + Sapling) now active
Execution plan completed	April 7th, 2019	Execution plan completed and fully deployed. Thread will be locked.

Components Identified

During the preliminary meeting BTCZ devs identified the components below.

Coordination / with the listed components will be required at least 30 days before Implementation is foreseeable.

The message needing to be communicated to the components listed is simple: If you’re running a full node for any purpose, an update to latest node build from BTCZ Github is required when it is available.

NOTICE: This list is not considered exhaustive - If any component is missing/not listed please let us know by posting in this thread, tweeting us, getting us on Discord or email us at [email protected]

Exchanges

Pools

Equipool
PCMining
Axepool
Geekhask
Mineflow
Pool.pink
CryptoCommunity
Miningspeed
Zsolo
Nibiru Pool
Altpool
2Miners
Coinblockers
Supernova

Wallets

Co-pay - will update when Insight explorer / BWS updated
Multi-asset wallets:
a. Coinomi - node update required
b. ZelCore - node-update required?
Swing wallet - node re-packaging required
CLI wallet - update node build required
Web wallet - will update when Insight explorer is updated
Offline wallets / paper wallet sites - no update required

Explorers

Iquidus - node update required
Insight - node update required / many other updates

NOTICE: This list is not considered exhaustive - If any component is missing/not listed please let us know by posting in this thread, tweeting us, getting us on Discord or email us at [email protected]

Updated March 17th 2019

cryptorex · October 8, 2018, 7:41pm

cryptorex · October 8, 2018, 7:42pm

cryptorex · October 8, 2018, 7:42pm

cryptorex · October 8, 2018, 7:44pm

Reserved. Feedback strongly encouraged.

Vegan2Go · October 9, 2018, 5:10am

Thank you Cryptorex for your precisious describtion and your step up for VaultZ activation. I would strongly highlighten the pool Suprnova, because one of the many reason why we constructed a donation method VaultZ was caused by their careless attitude. I dont mean that, everybody should donate but there should be a midpath between huge taxes and lack of donation. VaultZ is our midpath and dont forget we could devote it or modify it by the time passes.

So Suprnova should definitelly update to our new node, and I really hope so they do it.
I would like to add to the exchange list: http://cratex.io our members new exchange and his pool which was among our first pools: http://pcmining.xyz

Im happily looking forward for the next meetup!
Thank you.

swisstrader · October 9, 2018, 7:49pm

Thank you cryptorex for the new thread for VaultZ.

May I copy here as a reminder what I wrote on Nov 13 2017 on bitcointalk:

Take a developer fee for marketing and infrastructure of 500 BTCZ per block size reward, but do not destroy the factor 1000 in relation to BTC.
The halving will destroy the trust of ‘normal’ people in BTCZ as true BTC 2.0 as explained in post #1 of this thread.
Please could you explain exactly from the advantage site why halving helps?
BTC is mining until year 2040 to get all the 21 mio coins available. Shall BTCZ miners mining until year 2070 to get all available coins?
Halving destroys the reasonable factor 1000 to factor 500, this makes no sense IMHO.
Halving is a contradiction to the basic concept of BTCZ.

Good to see that we add now a small fee for community.

-swisstrader

Marcelus · October 10, 2018, 10:07am

If I understand correctly, the 5% will be taken directly from each new minned block (12500 -5% (665) = 11875 reward block)? And the change will be made in the BTCz Full node (https://github.com/btcz/bitcoinz).

So the payment gateways (btcz.in or pay.btcz.app) and other projects like TxtZ will also have to update the full node.

What will happen for those who do not update? it’s like a hard fork?

Vegan2Go · October 10, 2018, 3:32pm

I guess, who do not update, will be excluded or can cause huge share errors/ malefuncion at mining (lower rates).
Yes it will be taken from block reward goes to a community or vaultZ address (we will discuss it).
It will be voted what region (eg. Marketing, development…) and what project will get parts for utilites to development (will be discussed).
Receiver should report every transaction or usement of the amount.

cryptorex · October 10, 2018, 3:36pm

Yes - the change will be directly for each new mined block.

Yes - any service running fullnode will need to update. It is effectively a ‘hard fork’, in that those who do not update will be left behind.

cryptorex · November 5, 2018, 3:10am

We had a discussion on Nov 3rd 2018 to implement VaultZ. Details have been posted/updated on the chart in the original post.

In short we discussed the best approach to upgrading

VaultZ or
VaultZ + Sapling or
VaultZ + Sapling + DynamicZ

As of now - option 1 is the best option as 2 and 3 contain features that are either too ‘new’ or require additional thought.

We’re moving along.

Marcelus · November 5, 2018, 8:04am

I think everyone is aware of what is VaultZ,
but it’s not necessarily obvious about Sapling and DynamicZ.

So correct me if I’m wrong …

Sapling is an improvement of the zksnarks protocol,
which makes it possible to perform Z transactions faster and lighter (with less RAM, something like 30 Mb instead of 3 Gb). From this fact, Z transactions can be made from a mobil device.

But, what is DynamicZ (or Stealth-WerkZ)? Strategic partner with SAFEcoin and Safe Trade, auto-trading exchanges of BTCz to fiat (as explained on Project Announcement 06/27)?

cryptorex · November 5, 2018, 4:21pm

Yep - I’d say that’s a well explained description of Sapling.

Regarding DynamicZ - It is a discussion that was introduced by Stealth-WerkZ, but beyond that I cannot say because we believe it is truly innovative. Further evaluation of the idea needs to be tested because it is something I don’t believe we’ve seen. We can’t say much about it yet.

Vegan2Go · November 6, 2018, 7:30pm

Very nice update! I though we get a live meetup at oct.30th.
Couéd you update exchange list with Cratex.io made by our member PCmining.XYZ?! Pool list also.

cryptorex · November 8, 2018, 2:44am

Well the oct 30th date was a typo - it was kind of misleading. I meant to type Sept 30th which was the very first dev meeting we had about it.

But yes, a live stream will be in order I’m just waiting for some responses from some components listed and we’ll go live…I kind of miss that!

Thanks! Need to add cratex.io!

cryptorex · January 28, 2019, 9:37pm

I shared the below on Discord yesterday. I’ve also updated the table in the OP. Choo choo!

We’ve successfully tested VaultZ with a test Community Fee address.

We’ve mined on testnet and the block reward is being split per VaultZ 5% - testing has only used one address but we’re working on how the structure should be - as in there will be over 30 addresses. It seems to be the practice to have many ‘fee’ addresses. The amount of addresses doesn’t change the percentage, they just spread the Community Fee over several addresses.

The test pool where blocks are currently being mined is here: http://149.28.202.159:8080/stats

The testnet explorer successfully shows the block reward seperated out of the 12,500 blockreward - here are details: http://testnet.explorer.btcz.life:3002/block/0003845af6bc49592dd5f01085f1d6573fb93465f5c31f2c570e6f8808f58bc6

Note the 11,875 / 625 BTCZ split (t2CihAq1hbJB49hxWPPifDD7jWRepFoAM2b is a testnet multisig address)

We were successful in spending from the multisig address as well to a shielded address details are here - http://testnet.explorer.btcz.life:3002/tx/8dc97e0ef2d31ef91dbeb525f4b3bac79517bd259130b747078ac9733d5fe6c0

I’ll update the forum later, but wanted to share here first. We are still going to do some more testing and figure out the next steps which are getting a codebase for our exchanges and pool configurations, etc. Stay tuned - VaultZ is moving along.

matiman · January 29, 2019, 11:03am

Excelente noticia🤩!!!

sj1 · January 31, 2019, 1:10pm

Update (and effort!) much appreciated!

cryptorex · March 9, 2019, 6:41pm

Thank you everyone for the support. I’ve updated with a few extra details - nothing in too much detail, but we would like to communicate that our efforts are ongoing.

As you know, the proving method issue announced earlier this year has required us to pivot and update our core node to at least zcash 2.0.3. That many updates requires our test phase to be extended.

We’ve launched a testnet with a lot of changes and are working towards having a production release soon. Please stay tuned. Remember, this is a community effort. Thanks for your patience.

cryptorex · March 12, 2019, 4:12pm

Team renuzit ~~seems to be~~ is making great progress with our major update to zcash core 2.0.3. This will address the proving method ‘vulnerability’, among other upgrades.

The latest progress is blocks are being successfully mined on testnet:

http://testnet.explorer.btcz.life:3002/

There are a few other things to tidy up, including VaultZ, then we can start scheduling further updates and announcements.

Please stay tuned.