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GojuoNFT ∙ ZKojuoNFT

About

Our NFT is LIVE on zkSync Era! GojuoNFT are 8112 uniquely generated poker cards with Japanese character in ERC-721 standard issued on both Ethereum, Polygon & zkSync Era. Unlike most NFT projects only storing a website link into the blockchain, ALL visual elements and ALL metadata of GojuoNFT are securely put on the Ethereum, Polygon & zkSync Era blockchain, making our NFT collection truly immutable.

Example

漢字 Sun Moon Fire Water Wood Gold Soil = 7 days in a week

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平仮名 o ha yo u = GM / Good Morning

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片仮名 sa to shi = founder of Bitcoin

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片仮名 ra me n = Japanese noodle (zkSync Edition)

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GojuoNFT is a type of text art, aka ASCII art. Entire NFT is formed by text only which makes cost of on-chain storage much lower comparing to an image-based NFT. There are 104 Japanese characters in our collection under 3 main categories, i.e. hiragana 平仮名 (e.g.あいうえお ), katakana 片仮名 (e.g. アイウエオ) and kanji 漢字 (e.g. 日月気円). Each Japanese character is enlarged and comprised of the respective phonetic alphabet or English word.

Statistics

Total Supply on Ethereum, Polygon & zkSync Era

Hiragana characters
平仮名

Katakana characters
片仮名

Kanji characters
漢字

Text colors

Background colors

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Roadmap

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Play-to-Learn-to-Earn Game

GojuoNFT owner will be eligible for playing a Tinder-style Japanese learning game to earn more NFT. It is a very simple game to test your understanding on hiragana 平仮名, katakana 片仮名 and kanji 漢字.

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In the game, a GojuoNFT will be shown on the screen. If you think the NFT is a katakana, swipe left. If you think the NFT is a kanji, swipe up. If you think the NFT is a hiragana, swipe right. Those who get the most correct answers within a certain period can earn NFTs!

 

30% of GojuoNFT Colored are reserved as game rewards! We will potentially launch the game if we secure enough funding. Stay tuned!

As Seen On

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How to get GojuoNFT ∙ ZKojuoNFT?

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ZKojuoNFT (Token ID 5408 - 8111)

 

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GojuoNFT Classic & Colored (Token ID 0 - 5407)
  • All GojuoNFT Classic have been minted already! Thanks for your support!

How to claim ZKojuoNFT?

Anyone with a MetaMask wallet on zkSync Era can claim ZKojuoNFT. Token ID between 5408 to 8007 are open for the public. Token ID between 8008 to 8111 are reserved for contract developers.

Claim now to be a ZK pioneer !!!

  • 1. Search token ID for your desired combination of suit, rank and Japanese character in the previous section
  • 2. Bridge ETH from L1 to zkSync Era L2 via official portal
  • 3. Visit our ZKojuoNFT smart contract on zkSync Explorer
  • 4. Click "Write" then click "Connect MetaMask" on the right
  • 5. Click "2. claim" and fill in 0.002 (mint price is 0.002 ETH), the receiver address and token ID you want
  • 6. Click "Connect Wallet to write" and confirm transaction in MetaMask

How to claim GojuoNFT Classic for free?

All GojuoNFT Classic have been minted already! Thanks for your support!

Anyone with an Ethereum wallet can claim GojuoNFT Classic for free. You just need to pay for gas. Token ID between 0 to 2391 are open for the public. Token ID between 2392 to 2703 are reserved for contract developers.

  • 1. Search token ID for your desired combination of suit, rank and Japanese character in the previous section
  • 2. If your token ID shows up here, that mean it is claimed already. Please pick another one or buy from OpenSea
  • 3.

On-chain Mechanism

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Each GojuoNFT consists of visual elements and metadata. All metadata including suit, rank and the phonetic alphabet or the English word were already written into Ethereum when the NFT smart contract was successfully deployed.

For visual elements, there are 3 parts, i.e. top, middle and bottom. Both top and bottom parts were already written into Ethereum when the NFT smart contract was deployed. Since all 8112 NFTs are derived from 104 Japanese characters (46 Hiragana + 46 Katakana + 12 Kanji), only 104 sets of on-chain visual elements are enough to represent the entire GojuoNFT collection.

That's why there are two tiers of GojuoNFT Classic. For token ID between 0 to 103, users are required to input the middle part of the GojuoNFT visual elements when they claim the token. The input data can be found in the previous section. 104 sets of hashed data verifiers were pre-written into the NFT smart contract to ensure users inputting the exact data when they claim the token. The gas is around 0.023 ETH (for 50 gwei gas price).

For token ID between 104 to 2703, users are not required to input the middle part of the GojuoNFT visual elements. The gas is much lower which costs around 0.0075 ETH (for 50 gwei gas price).

For token ID between 2704 to 8111, those are limited editions on Polygon & zkSync Era.

 

FAQ

Frequently Asked Questions

NFT stands for non-fungible token where each token is unique in contrast to Bitcoin or Ether. NFT becomes the new way of collecting and trading digital art powered by blockchain. More details can be found in an intro article by Christie's.

Gojūon (五十音, "fifty sounds") is a traditional system ordering kana 仮名 by their component phonemes. Kana is the backbone of Japanese language where each one corresponds to one sound in Japanese.

Yes, please visit our page in OpenSea to search for all listed NFT.

It will automatically show up in OpenSea. You just visit our page in OpenSea to set price for your NFT.

Visit the Ethereum Blockchain Explorer Etherscan , Polygon Blockchain Explorer Polygonscan or zkSync explorer.

Click “getSuit”, “getRank”, “getWord” or “getMidContent”, then input tokenId to retrieve the respective data. For “getMidContent”, you will see an error message “Refer to token ID 0-103 for middle part of NFT content” if you query token ID > 103, please refer to the previous section “On-chain Mechanism” for further explanation.

For GojuoNFT on Polygon, click “getBackgroundColor”, “getTextColor” or “getTextColorRgbCode”, then input tokenId to retrieve the respective color data.

Click “getTopContent”, then input one of the 4 suits (i.e. diamonds, clubs, hearts and spades) to retrieve top part of the GojuoNFT visual element.

Click “getBottomContent” to retrieve the bottom part of the GojuoNFT visual element.

For “getTopContent” and “getMidContent”, the output data is encoded in hexadecimal. Copy the whole text except the “0x” in the front and paste it in hex-to-string converter to convert back to human-readable format.

For “getMidContent”, after the conversion, you need to enter a new line after each “\n”.

For “getBottomContent”, the output data is also encoded in hexadecimal. Copy the whole text except the “0x00000...00” in the front and paste it in hex-to-string converter. You may not see the whole bottom card clearly as last few bytes of the hex-data are trimed in Etherscan.

Inbox us via Twitter @gojuonft or join our Discord.

If the gas is above 1.5 ETH, that token ID probably has been claimed already. All claimed token shows up here.

You can also check Etherscan Gas Tracker for average gas price.

Yes, you need to connect your Ledger wallet to MetaMask. Please refer to new method or old method.

In you Ledger wallet, go to Ethereum App, then go to “Settings”, set “Contract data” as “Allowed”. In your MetaMask, click “Settings” > “Advanced”, scroll to the bottom to turn on “Use Ledger Live”. Open your “Ledger Live” Desktop Application. Then, try to claim it again.

Try to connect your Ledger wallet to MetaMask in browser other than Chrome, such as Brave.

Or open a new account in MetaMask and transfer some of your ETH from Ledger wallet to that account and start claiming again!

Check here to see whether that token ID is claimed or not. For token ID between 0 to 103, check whether the input data is correct or not. If everything is right, you can ignore the error to confirm the transaction.

Make sure your MetaMask is properly connected with a message “ Connected - Web3 ” in the top of Etherscan.

Or you can also try to use MetaMask extension via Desktop Chrome instead of mobile app.