Yuugen Multi-Chain NFT Marketplace


The Most Featured NFT Marketplace On Harmony Ecosystem

Application Type

Product Launch

Proposal Overview

Yuugen aims to become the most featured leading NFT Marketplace platform in the Harmony Ecosystem that combines usability with its rich features and user experience.

A core part of our vision is that open protocols like HRC-721 and HRC-1155 will enable vibrant new economies by providing a platform for creators to launch new digital works, and allow consumers to trade their items freely.

Why Harmony?

2-second transaction finality and 1000 times lower fees than Ethereum make Harmony the best platform to choose for our dApp. Yuugen marketplace users can easily create and sells their assets without struggling with gas fees. Also, its facilitated integration to dApps will speed up the development of Yuugen.

Multi-chain Integration

Yuugen brings additional ecosystems to support other platforms as well as Harmony.

The first integration to our dApp is the evm-compatible Polygon platform. This way, Yuugen will attract the attention of Polygon platform users to Harmony.


The problem

The collections that are formed from algorithmically generated unique digital collectibles from a set of attributes require an easy-to-use interface to mint assets. For example, https://www.harmonypunks.one/ developed an interface to mint random assets from the collection. Well, not every collection creator will create such a unique interface for the users. Besides the web interface, smart contract development is a requirement too. Also, the minted asset will need a marketplace to be listed or selling purpose. All these requirements will be a burden on non-developer collection creators.

The solution

YuuLaunch is an integrated platform to the Yuugen that facilitates asset minting in collections for the creators. Minted assets will be automatically added to the Yuugen user profile for listing or selling purposes.


In Yuugen, with

  • Multiple edition NFTs, creators can choose whether to set a fixed sale price, conduct a timed auction, or enable offerable pricing for their assets.
  • Unique user profiles with rich UX, users can track their own activity, get notifications, and can be easily connected with their favorite artists through personalized feeds.
  • HRC-1155, collections are supported and promoted through the platform with its usability features such as defined rarities for each asset, collection batch uploading, and importing from other platforms.
  • Rich Explore section allows users to discover new artists, top NFT assets, or collections.
  • Multi-chain and multi-wallet support. After Harmony, the Polygon platform will be integrated as well to attract more users to Yuugen.
  • Asset verification mechanism to stop malicious users to create or sell assets.



Smart Contract Developer with 2+ years experience on Solidity. Loves cats.
Interested in blockchain ecosystems and unique projects.
Japanese-themed arts and songs hearten his soul. Motto: “Everything can be done in enough time.”
Previously Intelligent Video Analytics Developer.


Experienced full-stack developer. Had completed various complex web applications and strongly interested in cloud technologies, especially AWS.
Has been dealing with cryptocurrencies and smart contracts since 2021 and continues with his undergraduate studies in computer science.
Berliner aims to bring innovation to the web3 and art world with works at the intersection of art and technology.


Interested in relations with artists who are broadly responsible for keeping artists happy in their relationship with Yuugen. Has experience in managing social media accounts with different projects. Aims to create strong artist relations with Yuugen DAO and Yuugen platform to grow art ecosystem altogether.


Yuuverse is a meta platform that connects users to a unique digital experience with VR Gallery. In our Q3-Q4 vision, Yuugen selected collections will be displayed in Yuuverse. The details will be announced at the start of Q4.

Yuugen DAO

Yuugen has the idea of becoming the bridge between creative artists and enthusiasts through its useful and decentralized DAO program. We believe DAOs will revolutionize the future of work. By creating different concepts in the DAO program, we will gladly support the dissemination of art to as diverse audiences as possible, the decentralized fair funding, and the creation of new projects.

Proposal Ask

Based on the Harmony Grant Launch Program,

  • $10K after launching a feature-complete product on our testnet,
  • $10K after forming a DAO with 5-out-of-9 multisig with our DAOs,
  • $10K after launching on our mainnet with audit,
  • $10K after 1K daily active users (with launch video, full PR promotion),
  • $10K after 10k daily active users (with a detailed roadmap, governance process).


Y (1)

We kindly request your feedbacks. @lij @Jacksteroo

Unfortunately, your proposal is not ready for a Launch grant based on the guidelines at Apply for Grants or DAO due to the following reasons:

Applications of each launch must have prototyped a feature-full product. Harmony helps incubate these founding teams with product development, fundraising, and talent recruit. We recommend a $50K equity-free contribution each:

$10K after launching a feature-complete product on our testnet
$10K after forming a DAO with 5-out-of-9 multisig with our DAOs
$10K after launching on our mainnet with audit
$10K after 1K daily active users (with launch video, full PR promotion)
$10K after 10k daily active users (with a detailed roadmap, governance process)

Also, we currently have MADinArt, VoldemArt, NFTKey TofuNFT, and another cross-chain marketplace likely considering launching on Harmony as well. NFT marketplaces is a very tough space to compete in. Unless you have a very compelling value proposition, with a built out PoC, it will be difficult to stand out.

We hope you continue to build on this concept and circle back when it is ready to be discussed further. Thank you for choosing Harmony.