Crown Platform Development update for May 2019 is here

First off, an apology: we aren’t able to release v0.13.4 by 6 May. Although the current release candidate solves the slow sync problem, fixes the display of immature rewards, fixes the address labels problem, and (added bonus) reduces the memory requirement, it has proved to be a bit unstable. It will be released as soon as the instability is resolved.

Now that MN-PoS is operational we are looking forward to the next developments in the evolution of the Crown platform. In order of arrival, and scale, they are:

Trezor integration
NFT framework
Codebase update


Trezor integration
This is an exciting development which brings the security of a hardware wallet to Crown users and offers the possibility in future to start masternodes and systemnodes without requiring a full desktop wallet.

It involves several components, some of which are completed and others which are nearly complete. The completed components are the new address prefixes in Crown v0.13 (“Jade”) and update of the Electrum-Crown wallet to understand the new address format. Changes to Bitcore to understand the new address formats are in progress and could be ready within two weeks. Bitcore will provide an Insight explorer which allows access to information in the Crown blockchain. The final component is the actual Trezor integration. Our target release date is June 2019.

NFT framework
This will extend the use-cases for the Crown platform and allow users to develop their own applications. Non-fungible tokens can be used in myriad ways. The initial framework version is expected in the “Emerald” release and will provide registration and timestamping facilities. One of the most basic applications of NFTs is recording proof-of-existence and we already have people interested in developing more complex applications. To facilitate this we aim to provide developer documentation ahead of the release, expected in testnet by July 2019.
Further development of the NFT framework will be guided by user feedback on the initial release.

Codebase update
Crown is based on Bitcoin core v0.10 and v0.11. In computing and crypto terms this is ancient. Bitcoin v0.18 was released on 2 May 2019.
Updating the codebase is a major undertaking with the principal benefit of making future maintenance easier. It will also enhance security and provide access to additional features. There is no estimated completion date yet but the project will take several months.

https://medium.com/crownplatform/development-update-may-2019-a53cc2c7eb55

Seems that Coinwarz has not updated the information on their site, current Crown client is 0.13.2

Crown is not PoW anymore, moved to MNPoS. You can stake it by setting up Masternodes or Systemnodes. First coin out there (as far as my knowledge goes) where nodes produce blocks

https://medium.com/crownplatform/crown-masternode-and-sytemnode-proof-of-stake-consensus-system-mnpos-e6780ef534b3

sorry I dont respond to people with offensive tone, have a great day sir

sure, join our telegram or discord and meet the community

Crown is not a company, it is a global community of users organized in a decentralized autonomous organization which backbone is the Crown blockchain.

which link?

best is to join the Crown discord channel, people there will help you https://discordapp.com/invite/rB3Kr86

there is a sync problem with current version, a new fix will be released this week, but you can read the instruction how to fix: https://medium.com/crownplatform/crown-v0-13-sync-problem-caf9febcf86d

and/or you can use the bootstrap to make the sync fast: https://nextcloud.crown.tech/nextcloud/s/RiyWmDLckmcXS6n

Crown expands its presence in the dynamic Latin American crypto markets with a listing on @CryptofacilEX (powered by @BittrexExchange)!

Register at http://cryptofacil.com and get FREE TRADES UNTIL May 31st (Invite Code: 0FEETRADES)

Great to hear you still running Crown nodes Daniel 

By the way, the timestamping part of code you implemented from Namecoin was the base idea for our upcoming NFT's release

Awesome explanation of Crown MNPoS by Mark

https://medium.com/crownplatform/crown-mn-pos-simplified-9c5bdac13460

‼️MANDATORY $CRW UPDATE‼️

Please update your #masternodes and #systemnodes to v0.13.2.0 which fixes the difficulty adjustment problem.

Release is ready - https://github.com/Crowndev/crown-core/releases/tag/v0.13.2.0

This is the command to update
sudo apt-get install curl -y && curl -s https://raw.githubusercontent.com/Crowndev/crowncoin/master/scripts/crown-server-install.sh | bash -s

Crown Masternode and Sytemnode Proof of Stake Consensus System [MNPoS]

Technical specifications for Crown MNPoS

The following is a detailed technical description of the Crown MNPoS consensus system. It explains the context of development, ellaborates on the solutions given to all detected conventional Proof of Stake vulnerabilities, and gives an overview of the system and its terminology. If you have any questions, please do not hesitate to join the Crown GitLab/social networks and ask them!

FULL TECHNICAL SPECIFICATION AND DIAGRAMS AVAILABLE HERE:

https://medium.com/crownplatform/crown-masternode-and-sytemnode-proof-of-stake-consensus-system-mnpos-e6780ef534b3

CROWN RELEASES JADE - AN UNIQUE ALL NODE STAKING POS PROTOCOL

Crown Core “Jade” v0.13.0 Mandatory Update

Release notes, update instructions, MNPoS, CRW prefixes explanation

Jade v0.13.0 launches the new Masternode Proof of Stake [MNPoS] consensus system. MNPoS will kick in 2 weeks after the release, at block height 2.330.000. The network has time to update to v0.13.0 until block height 2.327.000. Old nodes will be cut off at 2.327.000. v0.13.0 also includes unique CRW prefixes. Once you update your client to v0.13.0 all your public addresses will automatically be converted to new ones with CRW prefixes. You can read more about CRW prefixes in the technical documentation of Crown Platform, chapter 5.3 or in Mark Brooker’s release notes on GitLab.
doc/release-notes-0.13.0.md · master · Crown / crown-core
   

Crown Jade is live on mainnet
If you are reading this, Crown has successfully released Crown Core v0.13.0. I have provided a fast read with the release notes and update instructions, followed by informations on the CRW prefixes, MNPoS, block reward changes and next development milestones.
Release Notes
Update Instructions
CRW unique addresses
MNPoS
Why is MNPoS unique
Block rewards after MNPoS
What’s next

1. Release Notes

Crown Core Jade v0.13.0 features 2 main changes over the previous v0.12.5.x version.
a) Switch from Proof of Work to Proof of Stake
b) New [CRW] address prefixes

A total of 158 commits have been in place to make this release possible. The starring devs for this release have been Presstab (70 commits) as creator of the custom MNPoS solution and Ashot (62 commits) as Crown Core lead and supervisor. This shows an impressive engagement and coordination with a total of 6 developers involved in developing Jade. A massive shout out to defunctec and walkjivefly, who have been involved in testing during months!
The full release notes are available on Gitlab, courtesy of Mark Brooker.
doc/release-notes-0.13.0.md · master · Crown / crown-core
   
2. Update instructions
Protocol version is changed to 70055. This release is mandatory for the whole network. Please always back up your wallet.dat before proceeding to update the client.
Crown QT will prompt for update.


CRW wallets can be downloaded for free using the links provided below.
https://crown.tech/wallet/

Core of Crown blockchain platform. Contribution repository is available by this link…
github.com   

To update masternodes/systemnodes/other crownd instances use the following script:

sudo apt-get install curl -y && curl -s https://raw.githubusercontent.com/Crowndev/crowncoin/master/scripts/crown-server-install.sh | bash -s

3. CRW unique addresses

When Crown originally forked from Bitcoin it retained the Bitcoin address format. Nowadays that is not a desirable legacy because it prevents use of Crown with hardware wallets such as Ledger and Trezor. Those devices cannot distinguish between different coins with the same address prefixes.
v0.13.0 introduces new prefixes for both mainnet and testnet.

Mainnet addresses now begin with the prefix “CRW”, eg:CRWP934B9FbM5RaTUfT7zCH12a259j4PYbSE
Testnet addresses now begin with the prefix “tCRW”, eg:tCRWZpkQ8aJ4wyWx5MiZup23WG8aw5JmKRAaQ

These unique and distinctive prefixes will enable the use of Crown with hardware wallets. We hope to see the first integration soon.
The change is largely friction-free from the user’s perspective. Once users update to v 0.13.0, they will be able to receive CRW sent to old addresses from old wallets.

New wallets cannot send CRW to an old address.
Old wallets cannot send CRW to a new address.

If an updated wallet wants to send any amount of CRW to the old address it needs to be converted via Crown command line. For example:
crown-cli convertaddress 15bj2HB2UbmjEZgXyEW4M8MhUL5TXGCN8L
Result CRWGZiLqSUbCTWkm3ABp5qpXdun2h8DJCKYF
If the equivalent new address of 15bj2HB2UbmjEZgXyEW4M8MhUL5TXGCN8L is CRWGZiLqSUbCTWkm3ABp5qpXdun2h8DJCKYF you can send CRW from the old wallet (v 0.12.5.3) using 15bj2HB2UbmjEZgXyEW4M8MhUL5TXGCN8L and from new one (v 0.13.0) using CRWGZiLqSUbCTWkm3ABp5qpXdun2h8DJCKYF.

Both old and new wallets will be able to see the CRW!

4. MNPoS
On 18th of July 2018, Crown announced that it had signed an agreement with Paddington Software Services to develop and implement a custom Masternode and Systemnode Proof of Stake consensus algorithm on Crown Core. Eight months later and due to a huge community effort funding, monitoring and testing the solution, the code is now ready and included in the Jade 0.13.0 release. At block height 2.330.000, on April 12th approximately, the first Proof of Stake block will be minted by either a Master- or a Systemnode, and the transition from auxpow to MNPoS will be complete.

   
5. Why is the Crown MNPoS system unique?

It has been much argued if and why the new consensus system is unique. There are many reasons. Presstab has solved the disclosed vulnerabilities that affected some conventional PoS systems and has used the Masternode network as an additional dimension of security. I have published an additional article with contents authored by press tab and Mark Brooker containing the technical specifications of the MNPoS consensus system:
Crown Masternode and Sytemnode Proof of Stake Consensus System [MNPoS]


6. Block rewards after MNPoS

The block reward distribution will change at block height 2.330.000, when MNPoS kicks in. This graphic explains the changes.

On the left, reward distribution with PoW. On the right, reward distribution with MNPoS — starting at block height 2.330.000.

6. What’s next

Jade is a huge milestone for the Crown project, but this is just the first of a series of releases that will lead to Crown Platform v1.0. The next release “Emerald” is just around the corner and will feature the Non-Fungible Token [NFT] framework. NFTs on Crown Platform are a functionality with unique charateristics designed and implemented by Artem. More information about NFTs on Crown Platform will be available during April.


Thank you for your continued support of the Crown project!

Crown @ CoinFestUK 2019 — April 4th, 5th & 6th 2019

Crown contributors will hold a Community Meetup in Manchester on April 6th

CoinFestUK goes into its fourth round

Crown is sponsoring the event for the second time
Jose Herranz to speak at the event about Crown Platform and Artem’s brand new NFT solution
Crown contributors will hold a Community Meetup in Manchester on April 6th

CoinFest goes into its fourth UK round on April 4th, 5th & 6th of April.
CoinFestUK 2019
Crown will attend CoinFestUK 2019 in Manchester on April 4th, 5th and 6th, a free event organised by CryptoBatesGroup that hosts a range of free workshops, speaker presentations, exhibitions, games, music, and art works. Crown Platform is co-sponsoring the event for the second time after having successfully attended the 2018 edition. Headline sponsors are MonetaryUnit and ETHBITS.

Crown contributors at CoinFestUK 2018
Jose Herranz will speak about Artem’s NFT framework
This year, Crown has again been granted a speaker slot in which Jose Herranz will focus Crown Platform functionalities and explain Artem’s new non-fungible token (NFT) framework, exploring potentialities and differences to other NFT solutions. Crown Platform has grown and matured since its last visit to CoinFestUK and the key-note will be a great opportunity to present these novelties to the public.

CrownManchester19 meetup on April 6th
Several Crown contributors will be attending the event to network and we will use the opportunity to host #CrownManchester19, an open and free to attend Community Meetup that will take place at the same venue as CoinFest on April 6th between 2.30–5pm local time in the Graphene 2 room. Everyone wanting to learn more about Crown Platform is more than welcome to attend. We will discuss the new MNPoS solution, the NFT framework, and the general project situation. There will be an open Q&A round and we’ll enjoy some drinks together afterwards. You can view the full agenda below:

CrownManchester19
Want to meet?
If you have any questions about the #CrownManchester19 Meetup or would like to meet the Crown contributors during CoinFestUK to discuss partnerships or simply say hi, feel free to write an e-mail to info@crown.tech and we will be very happy to get to know you!

What do you love?
See you there
We are really excited about this new international adventure and can’t wait for the fun to begin. Catch you all there!
Questions? Join us on Discord!

https://discord.gg/bHWVEB

Jade Release on 28th of March

Version 0.13.0 includes the unique Proof of Stake solution and CRW prefixes


v. 0.13.0 will see the light on March 28th

Proof of Work will continue until block height 2.330.000. At this height, the first Proof of Stake block will be created

Old nodes will be cut off at height 2.327.000

Old and new prefixes will work from March 28th on updated clients

The new version will be released on March 28th and the Proof of Stake switch will happen at block height 2.330.000 (approx. 2 weeks later)
We are extremely happy to announce that the Master- and Systemnode Proof of Stake solution is ready to be launched. Crown Jade (v0.13.0) also includes the release of unique CRW addresses.

Dates and block height
Crown Jade will be released on March 28th. From this moment on, clients can be updated to the new version. The network will have two weeks to update to v0.13.0. At block height 2.327.000, old nodes will be cut off. 3000 Blocks later, at height 2.330.000, the first Proof of Stake block will be produced. Block 2.330.000 is estimated to kick in between 11th and 12th of April.

Miners
Miners please take into account that after the Proof of Stake switch is completed, Proof of Work will cease to function on Crown Core. We sincerely thank you for securing the Crown network during these years and hope to keep you on board as PoS minters.

unique CRW address prefixes
Once users update to v 0.13.0, they will be able to receive CRW sent to old addresses from old wallets.
New wallets cannot send CRW to an old address.
Old wallets cannot send CRW to a new address.
If an updated wallet wants to send any amount of CRW to the old address it needs to be converted via Crown command line. For example:
crown-cli convertaddress 15bj2HB2UbmjEZgXyEW4M8MhUL5TXGCN8L Result CRWGZiLqSUbCTWkm3ABp5qpXdun2h8DJCKYF
If the equivalent new address of ‘15bj2HB2UbmjEZgXyEW4M8MhUL5TXGCN8L’ is
‘CRWGZiLqSUbCTWkm3ABp5qpXdun2h8DJCKYF’
you can send CRW from the old wallet (v 0.12.5.3) using ‘15bj2HB2UbmjEZgXyEW4M8MhUL5TXGCN8L’
and from new one (v 0.13.0) using ‘CRWGZiLqSUbCTWkm3ABp5qpXdun2h8DJCKYF’
Both old and new wallets will receive the CRW!
Unique CRW addresses will allow for future hardware wallet integrations such as Trezor and Ledger, a long awaited functionality.

Exchanges
Exchanges will update to the new version during the transition period. Please double check that you are using the correct address to deposit funds and do not hesitate to ask us or the exchanges questions. Security of the network and funds is number one priority and will be guaranteed during the entire process. Nevertheless, we recommend users to always do a test send first during this period to ensure that funds are being displayed in the interface of the exchanges.

Support
Feel free to ask any questions on Discord or Telegram. The recommended channel is Discord, you can join using this link: https://discord.gg/KCRFF4

Major Milestone
Jade represents a major milestone that has been in the works for almost a year, since we first contacted Presstab and his team at Paddington Solutions. Crown Community is responsible for this success, since it has been supportive all the way from crowdfunding to patiently awaiting development, testing, and vulnerability fix of this unique and custom solution that puts the Crown project at the avant-garde of blockchain consensus algorithms.
Thank you, Crown Community! Thank you Ashot, Artem, and Presstab!

official announcement here:

https://medium.com/crownplatform/jade-release-on-28th-of-march-9018b1b6bdc7

The brand new Crown Platform video has been released!


Feel free to play and and learn about the Crown vision.

https://youtu.be/fI_zjKxzVaA

The most recent Q&A session from Feb. 13th 2019 with code lead @ashkhachatryanh and platform lead @dev_artem is now available on YouTube.

https://www.youtube.com/watch?v=55NAJNJGf1I

Check out the thread for a digest!

Sure its a young platform, but we have met with them personally (as we usually do) and they are good guys. Up to the potential users to make a decision if its a useful service or not I dont trade so I dont know

Yanda.io  partners with Crown Platform.
Yanda is the all-in-one solution for cryptocurrency trading.

Read the full release on our Medium blog:

https://medium.com/crownplatform/yanda-partners-with-crown-platform-5714440905fc