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An idea for the Voting system:

User creates a new account in a custom app for the voting. There's a button to register the account for voting (this is the KYC step where any verification can be sent to the entity). Once verified the entity sends the necessary asset or sets the Account Property for shuffling and voting. The user doesn't see any of that technical stuff, just a check that says "verified". Then when they are verified there is a button to register, behind the scenes this has that account join the necessary shuffling.
Once registration is closed, shuffling happens and then voting is open (behind the scenes the new shuffling account is used from now on and unlocked using the original account's private key. It can be listed in the GUI as the voting number maybe).
When a user votes it is labeled as submitted but really just sent to the entity's node waiting to be broadcasted at a set block. Once the block is reached, transactions are broadcasted, voting is closed, and users can check their votes using their voting number. (If voting is limited to only accounts with a set Account Property, maybe remove this property from any accounts that haven't voted to be safe)

• App should be open source
• Receipt of vote should be sent to voter for proof
• Votes wait in a dB on the entity's node(s)
• Maybe use account properties after shuffling. Only accounts that came out of the shuffling can vote and they are tagged with an account property
• Use the app to access the cloaked account so the user doesn't have to worry about a 2nd passphrase
• First account uses bip39 to generate passphrase
• Second account uses hash of 1st account passphrase

DAPP of crowfundings
The idea is to create a decentralized Kickstarter with no fees (the fees of these platforms are 5%).
The operation of a crowfunding needs tools that are already available in Ardor, so that only a GUI is necessary to integrate them and give them the conventional form of a web of crowfundings.
Each project must create a unique Ardor account for crowfunding, and describe in "Set Account Info" the purpose of crowfunding, web, etc.
The rewards would be created as offers in the Marketplace.
To visualize the objectives, the amount collected, etc., API calls would be made to the balance of the account.
To improve the reliability of the system, the account properties could be used to visualize (optionally) only the crowfundings endorsed by a third party.

NOTE: This same GUI could serve as an interface for ICOs. In that case, instead of rewards in the Marketplace, the characteristics of the MS would be used. A "reservable" currency would be created, with minimum, maximum collection, etc.

1. PRESENTATION
A web that presents the projects of tools of free use in Ardor that are promoted by the community.
Each project would have a space for
-an image,
-a description of its use case,
-the link to github
-the coordinator,
-the cumulative reward that would earn the dev.

2. BOUNTIES.
The devs and designers who work on the projects would receive the bounty, in proportion to their work. The distribution would be decided by the coordinator, and would only be executed when the objectives are met.

The bounties would come from voluntary contributions. Each donor could decide if his contribution is destined to the group of projects, or to one in particular. ANG would be in charge of managing those funds, which could be in Ardor/Ignis or Bitcoin, USD, EUR, etc.

1. ardornxt.io website is developing towards this type of presentation. I just added a straight forward html list of projects because the need felt urgent. It is planned to build a page template for each project to have own presentation similar to how you have outlined.

2. The bounty system is already developed there and is easily usable.

Marketplace Interface

• A web interface, but a similar look/feel as sites like eBay and Amazon so the navigation is familiar to users.
• You login with only your accountID (or better yet, an alias your account has)
• When you want to purchase something, it creates the unsigned transaction and you use your phone to scan a QR code (or using deeplinks on mobile) that will sign and broadcast the purchase (similar workflow as 2FA so it should be familiar to users).  So you never need to enter your passphrase in the site
• The interface show who users' feedback from past purchases/sells on the marketplace and allow feedback to be placed the same way as a purchase using unsigned transaction
• Using a contract like the identity verification ones from the hackathon, users can connect their accounts to social media accounts to try and have more credibility
• A bonus would be a chome/firefox extension that allows signing of transactions with it so you don't even need a mobile device if you didn't want to use one
• Make it transparent to users that the interface creates multiple marketplace listings for items with multiple shipping costs and/or options (On the blockchain there are multiple marketplace listings for the item, but in the interface it shows as one item with multiple options)

Added
Other ideas to consider"

• Users get feedback from only verified users and the primary feedback number is based off unique accounts only (since accounts can give feedback for any number of purchases from another account)
• Separate feedback as a seller and as a buyer?
• Buying fee for unverified accounts?  Maybe 5% that either gets burned or goes to the seller, to encourage verified users
• Verified sources for accounts must be unique (we don't want 10 ardor accounts being verified using the same twitter handle)
• Bonus if the html/css/js could be on the blockchain

you remind me my efforts in the golden age era of NXT...

nice suggestions, but unfortunately they will go with the wind like many  community efforts... if this was implemented, who knows what level of evolution it will be today
https://nxtforum.org/nxt-blockchain-creation-kit/dgs-optimizations/

in my NBCK, i work on the things based on one question... how will this be profitable to my merchants and end-users? if the answer is nothing = trash

currently my marketplace is better with a very good visibility of the products and my merchants... i also mixed the thing with an internal advertising system that show the products, assets... in all pages 

i didn't published my work (maybe i will never do), i just allocate some few minutes to this  before sleeping... for me, is more  java / javascript learning than a serious project because i lost faith and trust in jelurida... 

thank you and good continuation (to the trash lands  )

Auto Adjusting Custom Bundler

A custom bundler or script that will take the aggregate of multiple exchanges and automatically adjust the bundler based on current exchange rates. It can also have a setting to factor in a profit of X% compared to current exchange rates and the option to auto restart if the node crashes or needs to be updated.