I have created two collections that are on sale on OpenSea (Ethereum blockchain). The artworks contains hidden content inside the PNG files that can be extracted with steganography techniques using OpenPuff. The hidden content consist of video, pictures or text. I have also implemented additional authenticity mechanisms.

Secrets within
The first collection is called Secrets within and consists of 10 artworks. Each artwork contains its own hidden content that are either a video or image as well as a text file. The main content van be extracted using the three main passwords and the text file can be extracted using the three decoy passwords, all six passwords being revealed to the buyer. All metadata has been frozen.

Color of Impressions
The second collection is called Color of Impressions and consist of 11 artworks. Ten of the artworks contain one video file as a collective as all ten are carriers. The eleventh artwork on its own contains the index text file with carrier sequence. All eleven artworks need to be owned as each artwork reveals a portion of the passwords needed to extract the hidden content. All metadata has been frozen.

Authenticity mechanism
I looked at the authenticity mechanisms used by some artists and some of them are just a link to certificates somewhere in a link. The mechanism I implemented adds PGP keys, Ethereum address messaging (creator account), to the mix and writes all data to the Ethereum blockchain along the way in the input data fields. The data written to the blockchain include PGP public key, all digital signatures from all artwork, including the hidden content. All transaction IDs are in the descriptions of the collection and individual artwork and SHA256 hashes are included in the metadata that has been frozen, in order to check the integrity of the PNG carrier files before extraction. There are also more hashes and transaction IDs in the hidden text files of the carriers.

Links
Link to my OpenSea profile
Link to Color of Impressions collection
Link to Secrets within collection

I am having this problem right now. I dropped my first collection and will be dropping another in the next day or two. I posted in another thread that I focused on experimenting with technical capabilities but it looks like the market is more into no-brain NFT of 10000 this or 10000 that. (Maybe my pictures are just bad). I asked in the other post if the forum can look at the technical aspects I incorporated I have not received feedback yet. The journey continues with more marketing. I will look at the recommendations here as well. (maybe the pictures are just that bad). If I do find a mechanism that works I will post it here.

https://opensea.io/steg_nft

 

I have recently joined Bitcointalk and this is my first post. I looked through the posts in this thread and did not see anything mentioned on the authenticity of NFTs. I am experimenting with authenticity mechanisms and combined a mechanism of PGP digital signatures, blockchain technology, creator address and steganography. Inside the PNG file are more files, either videos, other pictures etc but also a text file with more authenticity mechanisms and hashes. I thought this necessary as I could not figure out how to create a digital signature of the NFT using the creator address only. I had to put a lot of technical information in the description that most people will not understand (and probably not care about) but what I would like to know is if this forum can understand it and can follow what I did. I know the PGP key ring servers are not working anymore so I used the blockchain instead for key validation.

Forget about the pictures and the ongoing listing, it will just end and be relisted again. I am interested to know if the technical persons here can follow what I did and if it works. I tested it 100 times and it works consistently but I will appreciate another test as well.

Yours faithfully

StegNFT

Link to pictures and technical information