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NFT smart contract release, blind box, public offering technology practice -- jigsaw puzzle
2022-07-06 07:57:00 【NFT practitioner】
Let's move on to the contract and explain the jigsaw puzzle .
There are two main functions to be realized in jigsaw puzzle :
- How to quickly make a variety of puzzles and meta Information
- How to upload ipfs Interstellar network system ( Test network )
The bill of materials to be prepared before starting is as follows
- OpenSea Test network https://testnets.opensea.io/
- HashLips Group drawing project GitHub - HashLips/hashlips_art_engine: HashLips Art Engine is a tool used to create multiple different instances of artworks based on provided layers.
- ipfs Upload space Pinata | Your home for NFT media
Practical steps
1. from git Upload and download Hashlips project
2. stay vs Open the project program , find main.js in take startCreating Methods 343 Change line to i =0;
3.cd Go to the local path of the project , And then run yarn install, Install related packages
4. After the related packages are successfully installed , Input yarn run build, Build the project locally . After success , as follows :
At this time, five pictures will be generated , Open the directory of project image generation build, See the corresponding five pictures generated
The first red box is five pictures , The second picture is corresponding to five pictures meta Information , Open to see the attributes and weights of the corresponding image , At the same time layers Folder , It will divide the picture into many layers , Random splicing .
5. Then we will config.js As shown in the figure layerConfigurations Change the quantity to 10 Zhang , And then go ahead and do it yarn run build command , After successful execution , Will generate 10 A picture .
6. open Pinata Website , Will just generate 10 Upload pictures .
The success is as follows
7. Then open the code , Replace the text in the green box with cid
8. After the update is successful , And then enter
After success , open json Any file in , notice image The address in is replaced by the one just CID
9. take Json The folder continues to upload the whole package
10 Start making blind box pictures , We from layers Take out a black background picture as the cover of the blind box
11. And then create a new one unpack Folder , Name the picture unpack.png picture , And create a new one unpack.json file , It reads as follows .
In the red box is the picture you just uploaded CID.
12.remix Find the function in the red box , Then put the... In the figure above unpack.json Of CID assignment , Assign to the red input box , At the same time, prefix with **ipfs://,** Then click the button .
13. stay setBaseUrl Set in meta_jsons Of CID, Also prefixed ipfs:// , At the same time, add /, because meta_jsons Is a collection , So add / , Click the button after completion .
Wait for the above transactions confirm after , Then open the ipfs The test network of , This is the time , A black picture will appear , In fact, it is the form of a blind box .
14. Click the function in the red box , The blind box function will be turned on , Wait for the deal to complete , go back to ipfs On , You will see the shape of the blind box you just drew .
The above is the mainstream Nft How to play the blind box , Introduction .
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