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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>UDAP Singular</title>
<link rel="shortcut icon" href="/favicon.ico" />
<link href="css/bootstrap.min.css" rel="stylesheet" />
<link rel="stylesheet" href="css/swiper.min.css" />
<link rel="stylesheet" href="css/index.css" />
</head>
<body>
<div class="demo container-fluid">
<nav class="navbar navbar-fixed-top">
<div class="container">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button
type="button"
class="navbar-toggle collapsed"
data-toggle="collapse"
data-target="#bs-example-navbar-collapse-1"
aria-expanded="false"
>
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="https://www.udap.io/"
><img class="logo" src="img/udapnew.png" alt=""
/></a>
<ul class="nav navbarmobile">
<li class="Nmr">
<a class="stress" href="/demo.html">
<!-- <strong class="sprites social1"></strong> --><img
src="img/nav/useCases.png"
alt=""
/>Product <span class="ico-new">new</span></a
>
</li>
</ul>
<a class="to-en" href="/cn/demo.html">Chinese</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div
class="collapse navbar-collapse"
id="bs-example-navbar-collapse-1"
>
<ul class="nav navbar-nav midnav" id="midPcNav">
<li>
<a
class="page-scroll"
id="navAbout"
href="https://www.udap.io/#home"
>Home</a
>
</li>
<li>
<a
class="page-scroll"
id="navTeam"
href="https://www.udap.io/#team"
>Team</a
>
</li>
<li>
<a
class="page-scroll"
id="navRoadmap"
href="https://www.udap.io/#roadmap"
>Roadmap</a
>
</li>
<li>
<a
class="page-scroll"
id="navInverstor"
href="https://www.udap.io/#inverstor"
>Investors</a
>
</li>
<li class="midMr">
<a
class="page-scroll"
id="navContact"
href="https://www.udap.io/#contact"
>Contact us</a
>
</li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li class="Nmr">
<a id="product" class="page-scroll stress" href="/demo.html"
><img src="img/nav/useCases.png" alt="" />Product<span
class="ico-new"
>new</span
>
<ul class="dropdown-product">
<li>
<a href="javascript:;"><small class="arrow"></small></a>
</li>
<li><a href="/umedia.html">umx.art</a></li>
<li><a href="/wallet.html">umx.art Wallet</a></li>
<li><a href="/zsb.html">CERT-Wallet</a></li>
<li><a href="/udge.html">UDGE</a></li>
<li><a href="/demo.html">Singular</a></li>
<li><a href="/middleware.html">UDAP Middleware</a></li>
</ul>
</a>
</li>
<!-- <li>
<a class="page-scroll" href="/tokensale.html"
><img src="img/nav/tokenSale.png" alt="" />Tokensale</a
>
</li> -->
</ul>
<a class="to-en" href="/cn/demo.html">Chinese</a>
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container-fluid -->
</nav>
</div>
<div class="container-fluid case">
<div class="cont">
<div class="container">
<div class="row demoImg">
<div class="col-xs-6 col-md-3 col-lg-2 demoImg4">
<a href="umedia.html">
<div class="bigicon"></div>
<h2 class="media">umx.art</h2>
<p class="bigpra4">
An NFT Trading Platform Built on Blockchain Technology
</p>
<i></i>
</a>
</div>
<div class="col-xs-6 col-md-3 col-lg-2 demoImg3">
<a href="wallet.html">
<div class="bigicon"></div>
<h2>umx.art Wallet</h2>
<p>An ERC721 and UDAP Singular style asset wallet</p>
<i></i>
</a>
</div>
<div class="col-xs-6 col-md-3 col-lg-2 demoImg5">
<a href="zsb.html">
<div class="bigicon"></div>
<h2 class="media">CERT-Wallet</h2>
<p class="bigpra5">
A General Securities/Ticket Issuance Platform
</p>
<i></i>
</a>
</div>
<div class="col-xs-6 col-md-3 col-lg-2 demoImg6">
<a href="udge.html">
<div class="bigicon"></div>
<h2 class="media">UDGE</h2>
<p class="bigpra6">UDAP Decentralized Game Engine</p>
<i></i>
</a>
</div>
<div class="col-xs-6 col-md-3 col-lg-2 demoImg1 active1">
<a href="/demo.html">
<div class="bigicon"></div>
<h2>Singular</h2>
<p>A new asset tokenization framework</p>
<i></i>
</a>
</div>
<div class="col-xs-6 col-md-3 col-lg-2 demoImg2">
<a href="middleware.html">
<div class="bigicon"></div>
<h2>UDAP Middleware</h2>
<p class="bigpra2">
A platform that provides APIs for blockchain protocols and
business
</p>
<i></i>
</a>
</div>
</div>
</div>
<!--demoCont-->
<div class="container-fluid">
<div class="container sigular">
<div class="sigularCont">
<h2>Singular</h2>
<p>
An EVM smart contract framework that provides a standard model
of tokenizing non-fungible assets. It contains a definition of
contracts for singular item, a wallet for these items,
interfaces to other token standards such as ERC20 and ERC721,
and primitives for decentralized trading of singular assets.
</p>
<h3>Our basic asset contract <i>singular</i> and the design</h3>
<div class="sigularimg">
<figure>
<img src="img/demo/sigular/sigular1.png" />
<p>
1. A piece of asset is uniquely associated with a smart
contract account. The account is the home for the asset.
People can easily scan the information about this token
through public services like Etherscan.
</p>
</figure>
<figure>
<img src="img/demo/sigular/sigular2.png" />
<p>
2. The owner of the Singular token must be another smart
contract account, named ISingularWallet. There is no direct
way for EOAs to own Singular tokens. This design is largely
in the same direction of Ethereum’s account abstraction
model (discussion)that might be deployed in a future version
of Ethereum.
</p>
</figure>
<figure>
<img src="img/demo/sigular/sigular3.png" />
<p>
3. It should support push ownership transfer
and pull ownership transfer patterns. In so called one-step
transfer, the current owner can pass an offer of the token
ownership to the receiver account and the receiver account
can choose to accept or reject the offer in the same
transaction. In a two-step ownership transfer, however, the
current owner reserves the token for the next owner in a
transaction. The address of the token is passed to the
receiver out-of-band. The receiver issues a separate
transaction to accept the offer, once it determines that the
offer is in its interest.
</p>
</figure>
<figure>
<img src="img/demo/sigular/sigular4.png" />
<p>
4. Operators. The ISingularWallet account can assign
operators to help with ownership transfers. Having an
operator to manage the asset token on the owner’s behalf is
a pattern that has been accepted by some other proposals,
such as ERC721 and ERC777. People have found it convenient
in handling token trading. The current token owner can
appoint an operator for the next ownership change. But
setting the operators on the token directly is polluting the
token interface.
</p>
</figure>
<figure>
<img src="img/demo/sigular/sigular5.png" />
<p>
5. Timelock. When an owner make an offer of ownership to
someone else by calling the approveReceiver() function,
there is a required argument for expiry time, during which
period the receiver can take the ownership at will by
invoking accept(...)on the token, which will in turn send a
notification to the previous owner for it to any state
update it wants, or even chain to another action. A critical
design is that the owner cannot change his mind during the
offer period. This is essentially a time-lock for the
transaction. In contrast, neither ERC20 nor ERC721 or any of
their derivatives offers built-in time-locks for ownership
trading.
</p>
</figure>
<figure>
<img src="img/demo/sigular/sigular6.png" />
<p>
6. Token swapping and token sale is implemented with an
intermediate TradeExecutor, which is a stateless contract
that deployed at a well-known address and be trusted by
Singulars for ownership management.
</p>
</figure>
<figure>
<img src="img/demo/sigular/sigular7.png" />
<p>
7. Adapters have been built to wrap tokens in ERC20 and
ERC721 as tradable Singulars. This enables building
decentralized asset exchange in a very straightforward way.
</p>
</figure>
</div>
</div>
</div>
</div>
</div>
<footer>© 2018 UÐAP FOUNDATION All Rights Reserved</footer>
</div>
<script src="js/jquery.js"></script>
<script src="js/bootstrap.min.js"></script>
<script src="js/style.js"></script>
</body>
</html>