Yes, they are. With the guarantee that the particular NFT that you bought will never be replicated again; it is a limited edition so there are only a few in existence. You will get a certificate/ ID blockchain (instant validation anywhere in the world) that will give you the ability to prove that you are the only owner of the digital object now and in the future.
NFTs are digital objects of limited edition, certified by Planeta Junior tm, this means that you can find similar digital content, but only these are the originals.
There are two ways:
1 - Paying a fixed price, or
2 - Bidding in an auction.
The seller is the one who decides whether it has a fixed price or is put up for auction.
1- Keep it for the sentimental value that it has to you.
2- f one day you decide that you don’t want it anymore, you can put it up for sale at the price you want, in this same marketplace.
3- You can auction it and stablish a starting price.
4- You can also take it to other NFTs marketplaces.
An NFT is created inside a net of different size computers, according to the need. For complex cryptocurrency transactions there are platforms that require a large amount of processing and that emit up to 42kg of CO2 per transaction, something that we find unjustifiable. This NFTs portal doesn’t require that processing level at all, and it works with a technology called Oaro ecoNFT, with an electric consumption per minute equivalent to a home. With a CO2 emission of approximately 0,2 grams (the weight of a feather, as a comparison).
Go into “my NFTS” and click on one of your bought NFTs. At the bottom you will see that you have directly the option to sell it at the price that you want, or put it up for auction from a certain date. Is as simple as that.