It gets tricky to store an entire digital content in blocks because there is a limit in the block storage space of the blockchain. For Ethereum for example, the block capacity of one Ethereum is lower than 1 MB and less than 20 transactions per block are included. Thus, it is nearly impossible to store digital content in a single block.
InterPlanetary File System(IPFS) converts data content to find the content distributed and stored in many different kinds of computers worldwide. IPFS breaks the data into small pieces, fetches it at high speed, combines it and outputs it as one.
IPFS is used to store data at a much faster speed and it is a protocol that enables convenient storage of large data.
NFT technology is showing a wide range of usability to prove ownership in a wide variety of fields. The NFT technologies are often valued with their rarity usually in jpeg files with design or games can be created using such technology.
On the other hand, DOCUCHAIN utilises NFT technology differently and uses it to verify the authenticity of documents by incorporating certification procedures for official documents or electronic contracts into NFTs.
To sum up, Docuchain incorporated NFT technology for the purpose of confirming the authenticity of documents in e-documents or electronic contracts instead of using the technology for profit purposes.