# What is Unikura? Unikura is NFT marketplace where all of NFTs are backed by physical assets. We solve the issues of buying, holding, selling, and shipping collectibles at marketplace by Tokenizing Real World Assets. ## Overview Many Japanese Real-World-Assets are listed on Unikura. By tokenizing and owning these collectibles, you can have ownership while avoiding various challenges, and as a token holder, you can gain numerous benefits. Additionally, if you really want to own the physical asset, you can redeem the actual collectible by burning the token. ## Why Unikura? ### No shipping fee Wonderful Real-World-Assets exist all over the world, so to own them, collectors have to pay high international shipping fee. But Unikura's protocol allows Real-World-Assets to be stored securely in Unikura's partner warehouse, and hold it as Redeemable NFT, so users don't have to pay international shipping fees, and trade as NFT on chain. ### No storage space Also, users no longer need to think about storage space or maintenance facilities to keep their collections in good condition. We have partnered with a top tier Japanese art- warehousing company to store collectibles in a safe, high-quality environment. ### Authenticity verification We build a network of validators and evaluate collectibles based on the voting of multiple validators. If the network find a problem with a collectible, the network will cancel your order and process a refund. ### Crypto payment One blocker to owning expensive Real-World-Assets is the method of payment. E-commerce services often reject credit cards issued abroad. We have implemented a Crypto payment feature to provide an easy payment method for Crypto Holders. Peer-to-peer payment between the seller and buyer without going through a third-party payment service provider. This design aims to reduce unnecessary payment fees and return the profits to our users. ### High liquidity Selling Real-World Assets can be challenging for general collectors because they need to address all of the above issues after finding potential buyers. However, Unikura's structure has resolved these issues, and additionally, the trading of NFTs contributes to their increased liquidity. Unikura NFT is a robust and redeemable NFT backed by Real-World-Assets. Our holders can borrow cryptocurrency using the Defi Protocol by using Unikura NFTs as collateral. # Meet the Team Unikura was founded in 2023 by a management team of serial entrepreneurs with over 10 years of experience in digital entertainment, marketplaces, and trade operations. Unikura is a startup managed with investments from top-tier investors in Japan and the United States. Currently, Unikura has two bases in Singapore and Japan. Our mission is to create a new marketplace that allows people to connect beyond borders through 'LOVE' by tokenizing physical assets. #### **"Dice" Daisaku Harada, Founder - CEO, Community Manager (**[**X**](https://twitter.com/Ginsaku)**,** [**LinkedIn**](https://www.linkedin.com/in/daisakuharada/)**)** After establishing a mobile social gaming studio at Walt Disney Company Japan Co., Ltd as a lead producer, he founded Zawatt Inc. in 2011 and became its CEO/Founder. Zawatt was acquired by Mercari Inc. through M\&A in February 2017. Dice then served as Executive Officer in charge of new business areas at Mercari, Inc., became CEO of a subsidiary in April 2018, and Head of Product - Newbiz at Mercari Japan in July 2019. In January 2021, he was involved with Mercari Group Management Strategy Office & Global Strategy Office as a Director. He also co-founded Chiba Dojo Fund, the largest community for startup CEOs in Japan, where he was an LP Investor and fellow/Community Manager. In October 2022, he founded Unikura in Singapore. **Shimin , UI/3D Designer** **Katrina , UI/UX Designer** **Eskaine, Full stack-Software Engineer**
# How It Works This is a brief overlook of how Unikura works:

Diagram of how Unikura works

### 1. Original Owner lists it's collectible * Original Owner, who is the first owner of the collectible, can apply to list their collectible. To list the Collectible on Unikura, Original Owner needs to submit the information and photo of the Collectible. * Now Unikura tokenizes collectibles, only those with a story to tell, stable value, and popularity among global collectors. Currently, Unikura can accept collectibles from Japan ONLY now. * Trading Cards (Pokemon, Magic: The Gathering, ONE PIECE, NBA, NFL etc.) * Luxury Fashion Bag (Hermès, CHANEL, Louis Vuitton, Goyard, Gucci, Dior, etc) * Luxury Sneakers (Nike, Adidas, Louis Vuitton, Gucci, BALENCIAGA, PRADA, Dior etc) * Luxury Watches (Rolex, Patek Philippe, Vacheron Constantin, OMEGA, Hublot etc) * Fine Art (Painting, Print, Photograph etc) ### 2. Buyer order a collectible * When a buyer finds a collectible of interest on Unikura, they connect their wallet and make a payment using Ethereum/Polygon. * At this point, Unikura NFT is not minted. The tokenization of the collectible occurs only after it has successfully arrived at Unikura's storage and gets a consensus of authenticity and condition evaluation on our validation network (Proof of Authenticity). * Buyer can see their collectible and Unikura NFT in " My Vault" page. * Unikura requests email registration so that we can contacted you during this process as needed. ### 3. Seller ships the collectible * Upon the order from the buyer, Original Owner will arrange the shipment to our facility. Please note that the shipping costs are borne by the Original Owner. ### 4. Unikura go through the process for Proof of Authenticity * For more details please check [this page](/unikuras-token/proof-of-authenticity). ### 5. Unikura stores the collectible * After the Proof of Authenticity is issued, the collectable is securely stored in a Unikura's storage or Unikura partner's warehouse. For security reasons, basically the detailed location of each storage unit is not disclosed. The buyer is the owner of the physical asset. Therefore, if the right to view is exercised, the physical item can be seen directly, but the location and time will be discussed with Unikura. In many cases, the disclosure will be in the Tokyo area of Japan. ### 6. Unikura mints token for buyer and transfer the sales to the seller. * Finally, Unikura mints a token to the wallet that was signed at the time of the order using Smart Contracts. * Simultaneously, the product price in Ethereum/Polygon, which the Buyer had previously paid, is transferred to the Seller's wallet address. # Placing an Order
Once an order for an item is placed, the item goes through a process of [Proof of Authenticity](/unikuras-token/proof-of-authenticity) to verify the authenticity of the product and check its condition. If there are no issues, a digital proof of ownership (i.e. the Unikura NFT) is minted on the blockchain to the buyer's digital wallet.
# Payment Methods You can purchase an item on Unikura using **credit card** or **digital currency** from your default [Unikura wallet](/unikura-wallet/overview) or an external wallet.

Available payment methods

When paying by credit card, you just need to enter your credit card details in the form provided. Please note that your credit card information will be saved until a purchase is completed. You can choose to remove your saved card information on your [Account page](https://unikura.xyz/account) **after 7 days of your order**.
Also, if you pay by credit card, you will need to select a digital wallet to house your official proof of ownership (i.e. Unikura NFT). You can select your default Unikura wallet or link an external digital wallet if you have one. \
If you choose to pay by digital wallet, then **your proof of ownership will be placed in the same digital wallet you used to purchase**. # Collectible Redemption (Shipping) Unikura NFT serves as proof of ownership for the associated Collectible. Therefore, if you want the Collectible in your possession, you need to burn the NFT to arrange the shipping. ## **How** **to Convert Your Unikura NFTs into Collectibles and get shipped** 1\. Get an address to forward * You need to get a "Shipping address for online shopping" from Tenso.com, which is a service that handles many international package forwarding services in Japan. By using this service, we can deliver your important packages safely and at a reasonable price. * *Customers residing in Japan do not need to use* [*Tenso.com*](https://tenso.com/)*.* 2\. Submit the request form * You will need to submit your personal information, including the "Shipping address for online shopping" of Tenso.com. * *If you redeem a watch of S$1000 or more, you will need to KYC to meet Singapore's legal requirements.* 3\. Receive the result * Upon confirming your details, we will send you an email with a URL for selecting the collectibles you want to redeem. 4\. Burn the NFT * From the URL received in step 3, select the allowed token(NFT) and burn it. You will be asked to connect your wallet and sign the transaction. {% hint style="info" %} Once you have signed, you will not be able to cancel this request. {% endhint %} 5\. Wait for delivery * Within two business days, we will send your collectible to the "Shipping address for online shopping" that you provided. We will contact you at the email address you submitted when we ship your collectible. ## Unikura NFT and the collectible associated * The Unikura NFT serves as proof of ownership for the associated Collectible. Therefore, burning the NFT triggers the redemption of the Collectible. Consequently, if you redeem the Collectible, you cannot continue to hold the NFT. ## Global Reach of Shipping Services * We use tenso.com to support the shipment of entrusted packages to [over 80 countries](https://www.tenso.com/en/static/guide_country_index). Please note that there are some countries that Unikura and tenso.com do not cover. ## Understanding Fees and Taxes for Redemption * Users seeking to acquire the collectible associated with their Unikura NFT will need to cover shipping costs as well as any applicable customs duties or sales taxes, which will vary based on their country of residence. * Shipping costs vary depending on the size and weight of the product, and the delivery destination. You can estimate the shipping fee [at this page](https://www.tenso.com/en/estimate). * It depends on your country’s laws and rules how much you need to pay for customs duties or sales taxes. Please check the website of the national tax agency for information about customs duties and other taxes. ## Shipping Schedule and Transparency in Delivery * The delivery using tenso.com usually takes 2 to 3 weeks after you submit the request form to Unikura, depending on the destination address. * A tracking code will be issued, allowing you to timely check the location of the store's package. # Overview A **wallet** is what you need to purchase and store digital assets. \ \ When you sign up or register for an account in Unikura, a **default Unikura wallet** will be created. This wallet will be tied to your registered e-mail / Google account and thus only you will have access to it.
Wallet-1

You can view your wallet when clicking on your profile icon on the navigation bar. You can then click on 'Manage' to go to your account page.

Another way to access your account page is by clicking 'My Account' in the main menu.

This is the wallet section of your 'My Account' page which shows your public address and other features.

Although you can only access this wallet when logging in Unikura, you will have your own public wallet address to receive digital assets from other Web3 apps with.\ \ The Unikura wallet runs on the Ethereum/Pologon blockchain, thus every transaction you perform with your wallet can be viewed on the blockchain explorer [Etherscan](https://etherscan.io/)/[Polygonscan](https://polygonscan.com/). We advise you to check Etherscan/Polygonscan after completing each transaction. # How to Top Up You can top up your Unikura wallet using your debit/credit card or manually through other digital wallets. \ \ First, access your wallet through 'My Account' page or by clicking your user icon on the top right. Then, click the 'Top Up' button.
\ Enter the amount you would like to top up. Then, there will then be two options to choose from: '**Transfer from wallet**' or '**Moonpay**'.
**Transfer from wallet**- This allows you to transfer funds from another digital wallet. **MoonPay\***- This will lead you to where you can purchase funds using your debit or credit card.\ \ The last option '**Send funds manually'** will allow you to copy your wallet address if you would like to transfer funds manually from an external wallet application.\ \ \ \ \ \
*\*only available in limited countries and currencies.*
# Linking an External Wallet If you would like to use your digital wallet from another platform for purchasing items on Unikura, you can link your external wallet by following the steps below: * Go to your account page by clicking 'My Account' from the main menu.

You can access the Account page from the main menu

* Look for 'Link external wallet' button at the bottom of the page.
* Select which wallet you would like to connect and authorise the connection from your external wallet app.\
\ Please ensure to **sign the Sign-in request** on your external app (which could be in a seperate session/window as your initial connect screen). Return to Unikura only after signing for your wallet to be successfully connected. \ \ \
# \[Not yet provided] Token Trading Token Trading We also plan to provide Buying & Selling features within Unikura. You can resell tokens purchased at Unikura on regular marketplaces like Onpensea. You can also buy tokens listed by someone else. # Proof of Authenticity Unikura's Proof of Authenticity is a decentralized system for appraising physical assets, built with reference to the Proof of Stake scheme of blockchain technology. ## NFTs for Real-World Assets The uniqueness of an NFT is established by its TokenID. This is a unique identifier on the blockchain, distinguishable from other tokens, like a barcode that cannot be duplicated or removed. This unique characteristic, combined with the special advantages brought by tokenization, makes NFTs suitable not only for the digital economy of the blockchain but also for many other existing assets. At Unikura, we specialize in tokenization services particularly for physical assets, focusing on movable assets called collectibles. Specifically, we focus on assets, such as trading cards, luxury fashion items, luxury watches, luxury sneakers, and fine art. ## What is Unikura's Proof of Authenticity ver.1.0? Unikura's Proof of Authenticity ver.1.0 (PoA) is a protocol where a decentralized network of appraisers evaluates various aspects of a physical asset using a scoring method to ensure its value and to certify that the physical asset is stored correctly. This protocol solves the issue of having to rely on a single, centralized entity, as was the case traditionally. It guarantees that physically backed tokens(Phygital NFT) can indeed be exchanged for their original physical assets, fostering trust in the authenticity and exchangeability of these assets. Unikura's Proof of Authenticity comprises the following entities: * **Proposer**: Unikura * **Blockchain**: Currently adopting the Ethereum Network * **RWA Validators**: Individuals and corporate appraisers accredited by Unikura, possessing certain skills in authenticity determination * **Committee**: Consists of RWA Validators and the Proposer, responsible for making the final assessment decisions. \ In PoA (Proof of Authenticity), the evaluation of the location and legitimacy of physical assets is determined through voting by management nodes, known as validators. Generally, in consensus formation based on voting, the risk of inappropriate consensus increases with a higher proportion of malicious validators. Therefore, in PoA, the system aims to motivate correct voting among validators by rewarding those who contribute to the correct consensus and penalizing those who do not. Unlike PoS (Proof of Stake), where the right to generate blocks is typically granted based on the amount of stake held, PoA introduces a variable trust index for voting, weighted by the credit rating of the validators, especially when no proprietary tokens are issued. This approach allows for a nuanced evaluation of votes based on the credibility of each validator.

Unikura's Proof of Authenticity Protocol

## The authentication flow of Unikura's Proof of Authenticity (PoA) 1. Asset Submission: The owner of a physical asset submits it for authenticity along with relevant details and documentation. 2. **Initial Review by Proposer:** Unikura, as the proposer, conducts an initial review of the submitted asset to ensure it meets basic criteria for the PoA process. 3. **Assignment to Validators:** The asset is then assigned to RWA (Real-World Asset) Validators. These are individuals or entities accredited by Unikura, skilled in determining the authenticity of physical assets. 4. **Evaluation and Voting by Validators**: The RWA Validators independently assess the asset. They evaluate various aspects like condition, authenticity, and provenance. Based on their assessment, they vote on the legitimacy and value of the asset. 5. **Consensus Formation:** The votes are aggregated to form a consensus. If a certain percentage of validators agree on the asset’s value and authenticity, the asset is considered authenticated. 6. **Recording on Blockchain**: Once authenticated, the details of the asset, along with its evaluation, are recorded on the blockchain (e.g., Ethereum Network). This step ensures transparency and immutability of the asset’s authentication record. 7. **Rewards and Penaltie**s: Validators who contributed to the correct consensus are rewarded, while those who did not face penalties. This system incentivizes accuracy and honesty in the evaluation process. 8. **Final Approval by Committee**: In some cases, a final review by the Evaluation Committee, comprising RWA Validators and the Proposer, is conducted for additional verification. 9. **Issuance of PoA Certificate:** After successful authentication, a Proof of Authenticity certificate is issued, which serves as a digital representation of the asset’s authenticity and value on the blockchain. 10. **Asset Tokenization (if applicable)**: The authenticated asset can then be tokenized, representing its ownership and value in the form of a digital token on the blockchain, ready for trade or other transactions. This process ensures that physical assets are rigorously evaluated and their authenticity securely recorded on the blockchain, providing trust and transparency in the digital representation of real-world assets. ## Evaluation of the Legitimacy of Physical Assets The consensus on the legitimacy of an asset is not formed through a simple binary vote of whether it is an authentic product produced by the brand (real) or a counterfeit (fake). Instead, for each category, appraisers individually assess designated points of appraisal, assigning a condition rating from 1 to 10 and collecting comments on any observations. Based on these inputs from each validator, the legitimacy of the Real World Asset (RWA) is evaluated using a specific calculation logic. This process determines whether to approve or reject the tokenization of the asset. ## Unikura Grade The Unikura Grade is a unique score that evaluates the legitimacy of the physical asset and its management state for an NFT, rated on a scale from 1 to 10. While the evaluation of the physical asset is calculated based on the input results from multiple validators, the Unikura Grade, recorded as meta information on the NFT, is represented by a single score. This is done to make it easy to understand the legitimacy of the physical asset and its management situation at a glance. The guidelines for each state from 1 to 10 are as follows in the table below. | Unikura Grade | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | | ------------------------------ | ------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- | | | Brand new (S+) | Like New (S-) | Very Good Condition (A+) | Good Condition (A-) | Average (B+) | Slightly Below Average (B-) | Slightly Inferior (C+) | Inferior (C-) | Poor (D+) | Very Poor (D-) | | Trading card |

No edge whitening

No surface scratches No sun damage

| Some whitening, almost like new | Some whitening or minor scratches, not noticeable | Some whitening or minor scratches, barely noticeable | Slightly noticeable whitening, or scratches | Noticeable whitening, or scratches |

Very noticeable whitening or scratches
Card is bent

|

Very noticeable whitening or scratches
Card is bent

Slightly torn in places

|

・Very noticeable whitening and scratches
・Card is bent

・Very torn in places

|

・Very noticeable whitening and scratches
・Card is bent

・Very torn in places
・Has graffiti markings

| |

Brand Items
Sneakers

|


Completely new　

\*There may be slight dirt or damage to the box or storage bag.

|

Unused condition with discoloration due to display.
\*There may be missing accessories.

| Very good condition with almost no signs of use. | In good condition with minor signs of use and scratches. |

Good condition overall but slightly noticable scratches can be seen.

| Good condition overall but noticable scratches can be seen. | Many scratches can be seen as a result of everyday use. | Many scratches, stain, rip as a result of everyday |


Very noticeable scratches, stain, rip and odor as a result of everyday and long-term use.

|


Very noticeable , stain, rip and odor as a result of everyday and long-term use.

| | Watches | Unused and in the same condition as purchased | Like new, unused. Old stock, minimal stain present | Used, with almost no stains or blemishes. Glass, hands, dial, case, and movement in very good condition. Movement moderately maintained. Polished watches are also acceptable. | Light scratches and stains. Glass, hands, dial, case, and movement in very good condition. No deep dents or cracks. No parts replaced during repair. Movement maintained as needed. May have been polished. | Noticeable scratches and stains. Fully functional. Glass may have been replaced. No dents. May have been polished. May include non-original parts. | Very noticeable scratches and stains. Fully functional. Glass may have been replaced. No dents. Movement may require repair depending on the situation. | Strong signs of use and scratches. May not function perfectly in some cases. There might be distortion in the case. May have been polished. May include non-original parts. | Strong signs of use and scratches. May not function perfectly in some cases. There might be distortion in the case. Dial, hands, and/or glass may need replacement. May have been polished. May include non-original parts. | Parts missing or malfunctioning. Suitable for partial use. May include non-original parts. | Junk item | ## RWA-Physical Assets Subject to PoA by Unikura * Trading Card (Single cards, Graded cards) * Luxury Fashion (Bags) * Luxury Sneakers * Luxury Watches * Fine Art (Flat artworks by certain artists) Currently, PoA targets items from specific brands within the above categories. The target categories will be periodically expanded based on research results, the development of evaluation logic, and the availability of qualified validators. ## Product authenticity and compensation At Unikura, the authenticity of physical assets that have undergone Proof of Authentication and have been tokenized into NFTs is guaranteed. In the unlikely event of an authenticity issue, Unikura will compensate the NFT holder up to the NFT purchase amount(Compensation in the currency at the time of purchase at the price of purchase). \ \*This PoA will be upgraded from time to time, forming and maintaining the overall picture as this version 1.0.
# Utility Unikura NFTs are not just a means of proving ownership; they offer ways to enjoy and utilize them that go beyond simply holding physical assets. ## Proof of sole ownership One Unikura NFT is asossiated to one Collectible. This represents the ownership of the Collectible. ## Enjoy Real-World-Asset by redeeming The collectible is yours, so you can redeem it whenever you like. Details about the procedure of redemption can be found on [this page](/unikuras-service/how-it-works/collectible-redemption-shipping). ## Enjoy Trading Unikura NFTs are compliant with the ERC-721(NFT) standard, so you can trade your NFTs in other Dapps supporting ERC-721. ## Enjoy Lending Protocols Unikura NFTs can also be used for lending. Unikura is forging partnerships with reliable DeFi projects. Please look forward to the expanding use of Unikura NFTs in De-Fi. ## Enjoy Viewing Collectibles can be displayed and viewed in the designated area. For more information, please submit a support ticket on Discord. ## Community access Unikura NFT holders have exclusive access to an online community on discord that is only available to individuals who own a Unikura NFT. ## Priority of Event access Unikura regularly hosts IRL events over the globe. Unikura NFT holders can receive priority invitations to attend these events. # Smart Contracts Overview Unikura's smart contract technology is broadly divided into two layers ## Unikura Collectibles Contract In Unikura, we link collectibles checked by Unikura's Validator network to NFTs on the blockchain. These NFTs mostly follow the ERC-721 token standard, but they also have special Unikura features. 1. Only certain addresses can mint these. Unikura NFTs are directly linked to collectibles Unikura manages, stopping worthless NFTs from entering the market. This means all NFTs minted by our smart contract are connected to collectibles we have checked. 2. We use metadata to show links to real-world collectibles. Unikura NFTs also prove who owns the real-world collectibles. With this, real-world collectibles and blockchain are connected. {% content-ref url="/pages/YQe5qyRSWmc41LPWjkbW" %} [Unikura Collectibles](/technology/smart-contract-reference/unikura-collectibles) {% endcontent-ref %} ## Unikura Market Contract As said before, right now, only Unikura can mint Unikura Tokens. Real users must send money to Unikura to turn collectibles into tokens. We have a smart contract for handling these user orders. It has three main parts: 1. The order feature for minting Unikura NFTs. We use orders on the blockchain and Unikura's internal data to see if an order is correct. If the order is right, we start getting the Unikura NFT ready for the user. 2. The order completion feature. When validation is done, we create NFTs through the Unikura Collectible Contract and send money to the seller. 3. The order reject feature. We use this if there's a problem with a collectible and Unikura decides not to mint the NFT. Then, we refund the crypto to the user who placed order for the mint. {% content-ref url="/pages/CLgmvUHcoFpG4rLyr9Aj" %} [Unikura Market](/technology/smart-contract-reference/unikura-market) {% endcontent-ref %} {% hint style="info" %} All contracts can be upgraded. Basically, upgrades are done to improve service quality, but we will communicate in advance if there are possible inconveniences for NFT holders. {% endhint %} # Smart Contract Reference # Unikura Collectibles This Contract is for minting and operating tokens associated with collections managed by Unikura, and is extended to Openzeppelin's [ERC721EnumerableUpgradeable](https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/blob/master/contracts/token/ERC721/extensions/ERC721EnumerableUpgradeable.sol), [AccessCon trolEnumerableUpgradeable](https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/blob/master/contracts/access/extensions/AccessControlEnumerableUpgradeable.sol) provided by Openzeppelin. ## Extended Methods ### burn ```solidity function burn(uint256 tokenId) external override onlyBurner ``` * Only burners set by the contract owner can call. * Burners need to be approved by the token owner. ### mint ```solidity function mint(address to, uint256 tokenId) external override onlyMinter ``` * Only minters set by the contract owner can call. ### updateBurnerRole ```solidity function updateBurnerRole(address account, bool status) external override onlyOwner ``` * Only the contract owner can call. ### updateMinterRole ```solidity function updateMinterRole(address account, bool status) external override onlyOwner ``` * Only the contract owner can call. # Unikura Market This Contract is for managing tokenization orders from users of the collection. ## Methods ### cancel ```solidity function cancel(uint256 tokenId) external override ``` * Only a sender of the specific order can call. * When a sender calls this method, this contract refund the amount paid by sender. * This method is used when there are duplicate orders with the same tokenId. It can be called after the regular order is complete. ### complete ```solidity function complete(uint256 tokenId, address account, address salesAddress) external override onlyAdmin ``` * Only admins can call. * When admins call this method, this contract call mint method in Unikura Collectibles. ### order ```solidity function order(uint256 tokenId, uint256 mintPrice) external payable override ``` ### reject ```solidity function reject(uint256 tokenId, address account) external override onlyAdmin ``` * Only admins can call. * When admins call this method, this contract refund the amount paid by sender. ### setAdmin ```solidity function setAdmin(address account, bool status) external override onlyOwner ``` * Only the contract owner can call. ### setCollection ```solidity function setCollection(address token) external override onlyOwner ``` * Only the contract owner can call. ### setFeePercentage ```solidity function setFeePercentage(uint256 percent) external override onlyOwner ``` * Only the contract owner can call. * When the contract owner call this method, the service fee in Unikura will be changed. ### setFeeRecipient ```solidity function setFeeRecipient(address account) external override onlyOwner ``` * Only the contract owner can call. # Deployed Addresses ### Ethereum Mainnet | Contract | Address | | ------------------- | --------------------------------------------------------------------------------------------------------------------- | | Unikura Collectible | [0xEA89a88284fF9a9A9A54F4c43Fc4efbF099e992F](https://etherscan.io/address/0xEA89a88284fF9a9A9A54F4c43Fc4efbF099e992F) | | Unikura Market | [0x6FE1d5A61ACc6c0D0395717077645644953c83FE](https://etherscan.io/address/0x6FE1d5A61ACc6c0D0395717077645644953c83FE) | ### Polygon Mainnet | Contract | Address | | ------------------- | ------------------------------------------------------------------------------------------------------------------------ | | Unikura Collectible | [0xE3b81454023CbBDA6392C499A2d27903a9ddC083](https://polygonscan.com/address/0xE3b81454023CbBDA6392C499A2d27903a9ddC083) | | Unikura Market | [0x77eDb2C31d31081a656367b7cCed192E9c51fE16](https://polygonscan.com/address/0x77eDb2C31d31081a656367b7cCed192E9c51fE16) | # Base Migration TL;DR - On September 29th 2025 we are migrating from Ethereum/Polygon to Base. We will cover minting/airdropping the collection to current Unikura NFT holders, so no action is required. ## **What’s happening?** To welcome more collectors to Unikura.xyz, we’re migrating from Ethereum and Polygon to the [Base](https://www.base.org/). This move will unlock key features for all types of collectors, helping us bring more collectibles onchain and making your collection accessible to a wider audience. ## **When is it happening?** The migration is scheduled for September 29, 2025. Once it’s complete, we’ll share updates via Telegram and email. ## **Do I need to do anything?** **Don't worry, No action is required on your end.** Our team will take care of the entire process to make sure the migration goes smoothly. New NFTs bound to ownership, with the same token id as the old NFTs, will be airdropped all at once on Base. ## **Why migrate to Base?** 1. Low-cost & High-speed Transactions • Gas fees are significantly lower than on Ethereum, and compared to Polygon, Base offers a more stable low-cost environment with faster processing. This reduces the cost of minting, trading, and transferring NFTs, resulting in a smoother user experience. 2. Compatibility with the Coinbase Ecosystem • Base is a chain developed by Coinbase, which enables seamless integration with Coinbase Wallet and the exchange. In particular, Base is rapidly increasing its use cases and transaction volume in end-user-focused dApps. 3. Security & Ecosystem Scalability • At Unikura, we safeguard users’ collectible assets. This is why we originally started on Ethereum, but it proved to be a heavy infrastructure for trading more affordable collectibles. Base inherits Ethereum’s security as an L2, which was a key reason for our choice. Moreover, as part of the Optimism Superchain vision, Base is expected to make interoperability with other L2s and connections with new dApps easier in the future. The existing ETH/POL Unikura.xyz NFTs will be updated with new images, deactivated, and made non-transferable. Below is a preview of the new image:
*Have other questions? Feel free to open a ticket in our telegram or email* # FAQ **Q: What is a Phygital NFT?** **A:** Phygital NFTs are digital assets available on our platform. They represent the right to be recognized as the owner of a particular collectible associated with that NFT. *** **Q: What is the Genesis Pass?** **A:** It is a symbol of the initial contributors. We also plan a variety of benefits as the project progresses. *** **Q: How can I obtain the Genesis Pass?** **A:** We are currently restricting new mints. *** **Q: What are the features of the Genesis Pass?** **A:** The Genesis Pass is a Soul Bound Token. This means it cannot be sold or transferred to other wallets.