Introduction

Q&A

What about the EXIF Data?

Where can i see the Smart Contract?

How can I deploy a collection with different rarities?

What are Blockchain Use Cases

https://opensea.io/learn/what-are-nfts

What is minting

You may have heard people ask, “Why can’t I just screenshot an NFT?” Minting is part of the answer. When you mint an NFT, it becomes stored on the blockchain, where its authenticity and ownership is established.  And because the blockchain record can’t be edited, minting is the start of that NFT’s immutable history.

Minting for creators

As a creator, minting your work allows you to establish provable scarcity and verified ownership. For the first time, creators can publish limited edition digital works, whose authenticity is validated on the blockchain. Ownership is undisputed and public, allowing creators to build special communities and perks for those who hold their NFTs.

Minting for collectors

Minting NFTs isn’t just for creators, however. NFT projects will often offer early access to their NFTs via a mint. When you mint an NFT from a project, you’re the first ever owner of that NFT, since the mint is when it’s written to the blockchain. Oftentimes, participating in a project’s mint is like buying a pack of Pokémon cards: you don’t know if you’ll end up with something rare. 

Where is your NFT Metadata stored?

OpenSea recently launched a feature to “freeze” NFT metadata, enabling NFT creators to properly decentralize their NFTs using IPFS and Filecoin. OpenSea is one of the largest NFT marketplaces in the web3 space, creating a market for millions of NFTs today. Using IPFS and Filecoin, NFT creators that use OpenSea can now create immutable NFT metadata using IPFS content addressing and provable and decentralized storage with Filecoin.

OpenSea’s Decentralized and Immutable NFT Metadata

With OpenSea’s new “frozen metadata” feature, NFT creators can get the benefits of IPFS content addressing and Filecoin decentralized, verifiable storage immediately! Creators can seamlessly push content into IPFS and Filecoin to create immutable links to the NFT’s metadata and ensure the content is stored in perpetuity.

Read more about OpenSea’s decentralized metadata feature, and how they use IPFS and Filecoin, on the OpenSea blog!

Quelle:

https://filecoin.io/blog/posts/opensea-decentralizes-and-persists-nft-storage-with-ipfs-and-filecoin/#:~:text=OpenSea%20stores%20NFTs%20with%20IPFS%20and%20Filecoin

Where’s Your NFT Image? Not on the Blockchain!

Key Take Aways

• NFTs live on the blockchain – but not all of your NFT is there.
• Your token is a separate component from the artwork or video itself (the metadata) and this metadata probably lives on a server – not on the blockchain.
• NFT metadata storage raises serious questions in terms of cost, security, decentralization and the limits blockchain – and is something every NFT collector should understand.
• Here we explain how the different parts of your NFT are stored, and what it means for you and the industry as a whole.

Beyond their specific use cases, non-fungible tokens are simply media files that have been tokenized, and linked with the blockchain. Yet the composition of NFTs – namely, their different components and where each one lives – is often misunderstood. This makes it difficult for users to properly assess what they are buying when they purchase a non-fungible, or even really understand their own collection.

Let’s change that, shall we?

In this article, we’ll explain why the art for your NFT is probably not on the blockchain, where the files are being stored and the consequences this has both for you and the space as a whole.

Ready?

NFTs and Metadata: Two Different Things
Let’s set the scene. Your favourite music star just released a super-rare (and very artsy) collection of NFT video clips, and you’re excited to tell all your mates that YOU are the proud new owner of this iconic clip. It’s right there at your blockchain address, just like your coins and tokens.

Blockchain is pretty amazing, right? Is there anything it can’t store?!

Well actually…it’s a bit more complicated than that.

An NFT is not just one single thing – it’s a package. This package involves two key components: the token itself (ERC721), and the digital content, which is normally a media file. This file – the content and flavour of the NFT – is known as the Metadata. Let’s take a closer look at each of these components and their role in the story.

Your ERC721 Token – The Bit You Own
The ERC721 token is the backbone of NFTs, allowing anything to be “owned” by attaching it to the blockchain. When you talk about your NFT as a blockchain asset, you’re really referring to this underlying ERC721: a token containing its own smart contract.

But the token does not contain any artwork, video or audio files – probably the thing you bought the NFT for. Instead, its smart contract contains a link to wherever the media files are stored.

NFT Metadata – The Main Event
The content for your your non-fungible token, be it an MP3 audio file, video file or s JPEG image, generally lives elsewhere, off-chain. So your Bored Ape, Moonbird or metaverse fashion sneaker are not inside your ERC721.

Why? Quite simply – it’s too damn heavy!

At its heart, blockchain is a digital storage system, but it was designed to tack simple value – not media. To illustrate, let’s look at Ethereum network, which is the main hub for NFTs.

Each full block processed by the Ethereum network is only around 1MB in size – a simple image is around 2MB in size. We’ve all known that sinking feeling of waiting for the gas fees to pop up on screen, just imagine the wait if you were paying for two full transaction blocks?.

If we were all using the network to send films, multimedia and pictures, paying huge sums each time would be a reality – and as you can probably tell, it’s simply not practical.

Blockchain has Storage Limits
Blockchain was not really designed to handle the high volumes of traffic we’re seeing today (one reason why transaction fees are so high), nor was it intended for large files. This is why managing NFTs, normally entails splitting tokens into on-chain and off-chain parts to enable them to run on the network.

Broadly speaking, there are three types of storage for metadata: central server/cloud storage and IPFS among off-chain options and occasionally on-chain on the blockchain itself. Let’s take a look at the different options.

Off-Chain Storage Options
Central Servers
The majority of NFT metadata is stored centrally, in cloud storage, in other words, in centralized servers or cloud servers such as Google Cloud or iCloud.

Such off-chain storage solutions allow the blockchain to handle NFTs in a streamlined way, keeping your ownership on-chain and the media itself somewhere else. But this solution comes with its own inherent drawbacks – all of which relate to our old friend centralization.

As with any centralized online service, the server might go down, the company might dissolve, or you might find yourself unable to access your files due to censorship – and as a result, although your ownership of the token is guaranteed, access to its underlying files is not. A broken server means a broken link, and for you that means a lovely 404 error instead of your media files when you try to trace your NFT content.

The link inside the smart contract simply won’t locate your files.

Quelle:

https://www.ledger.com/academy/wheres-your-nft-image-not-on-the-blockchain

What is the difference between Minting and dropping?

Minting an NFT (non-fungible token) and dropping an NFT are two different actions with different goals.

Minting an NFT means creating a unique digital asset that is stored on a blockchain and represents ownership of a specific digital item or piece of content, such as a digital artwork or a tweet. The goal of minting an NFT is to create a one-of-a-kind asset that collectors can buy and own.

Dropping an NFT, on the other hand, means releasing an NFT to the public for free or as part of a promotional campaign. The goal of dropping an NFT is to create buzz and excitement around a particular brand, event, or product.

So, to answer your question, the decision to mint an NFT or drop an NFT depends on your goals and objectives. If you have a unique digital asset that you want to sell to collectors, then minting an NFT would be appropriate. If you want to promote a brand, event, or product and generate buzz, then dropping an NFT could be a good strategy. Ultimately, it comes down to understanding your audience and what they value.

how is a dropped nft getting minted

When an NFT is “dropped,” it typically means that the NFT is being released to the public for free or as part of a promotional campaign. The NFT itself is typically already minted and stored on a blockchain.

To give some more context, minting an NFT involves creating a unique digital asset and recording ownership of that asset on a blockchain, such as Ethereum. Once the NFT is minted, it is assigned a unique identification code, which is stored on the blockchain and can be used to verify ownership of the NFT.

When an NFT is “dropped,” this means that the owner of the NFT is making it available for others to acquire, usually through a giveaway or other promotional campaign. This could involve distributing the NFT to a specific group of people, such as followers of a social media account or attendees of an event, or it could involve making the NFT available to anyone who wants it.

In either case, the NFT itself has already been minted and recorded on the blockchain prior to being dropped. So, when someone acquires the NFT through a drop, they are essentially taking ownership of an existing NFT that has already been minted.

ABC NFT – Tools Overview

• A for “Annotate” — Experiments like NFT Scribe make it possible to append onchain messages to Ethereum ERC721s. 
• B for “Borrow” — BendDAO employs an NFT liquidity system based on a peer-to-pool model. This approach lets NFT holders use approved assets as collateral to instantly borrow ETH from the lending pool. Meanwhile, depositors supplying ETH liquidity can earn interest on their contributions.
• C for “Catalog” — JPG Canons is a token-curated registry (TCR) system. These directories are community-sourced NFT lists, e.g. Derivative NFTs, created as public goods for mapping out Ethereum’s cultural landscape. (Disclosure: I contribute to JPG!)
• D for “Draw” — OKPCs are dynamic NFTs whose surface you can change with your own pixel illustrations! Think of it like an onchain Etch-a-Sketch toy. 
• E for “Exhibitions” — Create galleries of NFTs you own or curate thematic exhibitions for metaverse or IRL events on platforms like Deca, OnCyber, and Gallery.
• F for “Follow” — Lens is a rising social media platform on Polygon that mints Follow NFTs to track who follows who onchain. 
• G for “Game” — NFTs can be used as digital game pieces, wearables, and virtual land like we see in games such as Axie Infinity. 

• H for “Hang IRL” — If you’d like to enjoy your favorite NFTs throughout your home or elsewhere, physical displays like Infinite Objects are a great place to start. 

• I for “Insert” — Projects like Charged Particles make it possible to insert NFTs into other NFTs, similar to how you might store multiple documents within a single folder. 
• J for “Jam” — The music NFT scene continues to gain traction, which makes web3 music players like Spinamp really convenient for enjoying and organizing playlists of your favorite songs. 

• K for “Keep Safe” — Safety-focused services like ClubNFT make it simple to backup the metadata of your NFTs for the long term. 
• L for “Loan” — On peer-to-peer lending platform NFTfi, lenders can propose loans on available NFT collateral, specifying loan amount, duration, interest rate, and so forth. If loans go unpaid, lenders receive the underlying NFT collateral. 
• M for “Migrate” — LayerZero Labs creates infrastructure that makes it possible to bridge NFTs to new chains, e.g. the recent opening of the Lil Pudgys Bridge. 
• N for “Name” — The Ethereum Name Service (ENS) allows users to register human-readable domain names and subdomains to simplify Ethereum addresses and make it easier for individuals to interact with blockchain-based services. 
• O for “Organize” — NFTs can be used for organizing activist efforts, such as we’ve seen with the raising of funds for Ukraine’s defense. By creating and auctioning or selling NFTs, people can mobilize resources and raise awareness about real world causes. 
• P for “Provide Liquidity” — Earn yield on your NFTs by supplying them as liquidity to service decentralized NFT exchanges like Caviar. 
• Q for “Quest” — Build up your onchain credentials by amassing Quest Receipts on RabbitHole V2’s new Quest Protocol. 

• R for “Rent” — You can rent out your idle NFTs via platforms like reNFT and delegate.cash as we saw from more than a few Sewer Pass holders during Yuga Labs’s recent Dookey Dash competition. 
• S for “Squad Up” — The new and improved PartyBid app makes it simple for you to team up with small squads of friends or large groups of strangers for NFT-based activities, e.g. an onchain Tic Tac Toe battle between two DAOs. 
• T for “Track Crypto” — Price tracker sites like CoinGecko are cool, but NFTs like Finiliar have in-built oracles so their dynamic “moods” reflect and track associated crypto prices. It’s certainly the cutest way to monitor crypto!
• U for “Unlock” — You can use access NFTs to unlock unique experiences, for example the Degenz Gold Pass unlocks pro analytics tools on the degenz.finance platform. 
• V for “Vote” — Bud Light owns Noun 179. Bud Light N3XT NFT holders collectively vote on Noun 179’s decisions, making N3XT NFTs (~0.01ETH right now) an affordable way for NFT enthusiasts to access Nouns DAO voting.
• W for “Wrap” — It’s possible to “wrap” NFTs that pre-date the ERC721 NFT standard into modern NFTs, e.g. Wrapped CryptoPunks, and it’s possible to “wrap” NFTs into fungible currency like we’ve seen with Wracked CryptoKitties (WCK) tokens. 
• X for “(E)xplore” — Check out events around Ethereum’s metaverse scene where virtual land is managed and organized via NFTs.
• Y for “Yield” — Hook Earn enables NFT owners to generate yields on idle NFTs by listing them for sale at a specified future date and price. Traders pay NFT holders upfront for potential future earnings, and if the NFT sells at a higher price, the trader earns the difference. Currently in its early stages, Hook Earn has a waitlist for interested users to sign up.
• Z for “Zoom” — Hologram, created by Hologram Labs, allows users to assume the form of their favorite NFTs in video content and live video chats through motion capture technology.