we are zero budget team, and we created an on-chain gifting service in optimism, Arbitrum, Polygon
we leverage the cost effectivity of L2s to create big size SVGs and on chain massage.
me and my friends believe in on-chain technologies and this project is bit by bit on the blockchain.
- our project is active on Optimism, Arbitrum, polygon blockchain and you can gift your friends, family, and coworkers a NFT to remember.
- Our On-chain NFT Dapp is available here http://xmasbook.xyz/
- mint is open since 15 Dec to 15 of Jan.
we don’t want to ask the nouns community for funds but we need support.
if you are interested in this project please consider to mint a few for yourself and loved ones.
the whole things cost around 0.002 Eth, and it would be huge help.
if you could share this project with anybody it would be a huge honor and I’d be so grateful.
Xmasbook images are made with SVG, SVG was developed in early days of web, when bandwidth was not high like these days and if wanted to have high resolution regular images (like .jpeg or .png) in a website that website would have became a big size website that have long loading time, so to overcome the problem of size of the images, world wide web consortium (the guys behind making internet an open standard) aim to create an new standard to make an scalable graphics (an image that if you zoom it won’t become pixelized).
SVG files are consist of something that it called Tags . these tags defines what an image should look like. let’ draw an rectangle in a SVG.
<svg width="400" height="400"> <rect width="200" height="100" fill="pink" /> </svg>
the above code will be rendered to this image. the <rect> tag is stand for rectangle.
- SVG language is a feature reach language that support too many amazing things. If you are interested to understand more by doing, I highly recommend to get your hand on this tutorial.
w3schools SVG intro
In a way you should consider blockchain as a precious storage device, all of us storing all sort of data, transaction, … on the blockchain. but blockchain has a limited capacity. for example Ethereum will produce almost 5 blocks per minute and each block has an average size of 80 KB(kilo bytes), it means that we have around 400KB/min for this millions of users. so when we want to consider a regular images(.jpeg or .png or raster images) size these days, it in order of megabytes and Ethereum machines have not this much capacity. so we have no other choice to use SVG.
becuase it has more efficent memory.
this way we can create images that has only is 7KB in size and has much details as well.
- this way we created a repository of our assets in SVG and store them all in the blockchain.
we are going talk about two thing here how SVG are stacked, and how user store them in smart contract
Xmasbook postcard is created by stacking diffrent SVGs that user selects images in blockchain.
sky or the background
second layer is the planet
If you stack these two togethor you get this.
and I think you get the idea of how this is created.
Xmasbook has 13 bytes of data, each of them controls 1 field of visual data that each user put on the chain, to determine what that NFT should look like.
first byte determine the background in the image
second byte determine the palnet in the sky
third byte determine the landmark
4th byte determine which christmas tree should be in the image
5th byte determine gift box under the tree
6th byte determine the NFT guest
7th, 8th, 9th, 10th byte decide the ornament on the tree
there is a pre determined layer here that we internaly call “papyrus”, it has paper like texture and “To:” and “From:” field on it
11th byte determine the stamp of the postcard
12th byte determine the frame of postcard
- user can pick the NFT without a massage but we highly encorage to write a massage for your loved ones
after the NFT visuals are ready user can put a 160 charter massage that stores in a byte array
we limited the chataters to ASCII-128 with the exception of “<” and “>” character to prevent HTML injection in SVG.
user can write a from and to section in the card too. and it’s limited to 20 character.
we also made another Christmas themed project back in 2021 if you were interested, you can check them out here.
the contract still haven’t reached total supply limit and you can still mint them.
Disclaimer: then we didn’t much about on-chain technologies, and previous project is an IPFS project.
thank you for reading this sincerely, sciNFTist.eth