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 and hashes. 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
Twitter handle: @StegNFT
Creator account: stegnft.eth
Topic: NFTs using steganography for sale (StegNFT) (Read 77 times)
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