Add NFTs doc

.changelog/1436.internal.md

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+Add NFTs documentation

README.md

@@ -12,6 +12,20 @@ The official deployment of Oasis Explorer lives at <https://explorer.oasis.io>.
 
 Development deploy is available at <https://explorer.dev.oasis.io>.
 
+## Features
+
+- **Transaction History**: Allows you to view the complete transaction history of a specific blockchain* address.
+- **Block Contents**: Enables you to examine the contents of individual blocks. This includes information like the transactions in the block, the total block size, and the block's hash data.
+- **Transaction Verification**: Lets you verify the status of a transaction. You can confirm whether a transaction has been validated by the network and included in a block.
+- **Blockchain Statistics**: Provides overall statistics regarding the blockchain such as the total number of transactions, and the number of blocks already created.
+- **Address Balance**: Enables you to see the balance of any blockchain* address.
+- **Network Nodes**: Provides information about the nodes in the blockchain* network.
+- **Search engine**: Enables you to lookup tokens, addresses, names, blocks and transactions;
+- **Non-Fungible Tokens (NFTs)**: Provides information about NFT ownership, metadata, transactions history and minting information. (See [more...](./docs/NFTs.md))
+- **Contract Reading and Writing** *(upcoming)*: Can read contract details and record new contract interactions.
+
+*blockchain: ParaTime layer/s or Consensus
+
 ## Getting started
 
 ### Installing and running Oasis Explorer

docs/NFTs.md

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+# Non-Fungible Tokens (NFTs)
+
+## Features
+
+- **NFT Ownership**: The blockchain explorer could indicate which address currently owns a particular NFT.
+- **NFT Metadata**: Displays metadata associated with the NFT, such as name, description, image, or any other attributes
+  defined in the token's contract.
+- **Transaction History**: Shows the transaction history of the NFT, allowing you to see past owners and sales prices.
+- **Minting Information**: The time and block of when NFT was minted.
+
+## NFT Metadata support
+
+As of the time this documentation was written, our Explorer is designed to support only the
+official [ERC-721](https://github.com/ethereum/ERCs/blob/master/ERCS/erc-721.md) metadata standard, as per Ethereum's
+specifications.
+
+At present, our system primarily supports the display of image type assets with a preview feature. These image types can
+reside on a variety of hosting platforms, including HTTP, HTTPS, FTP, IPFS, or they can even be Base64 encoded (data:
+image/*).
+
+However, it's important to note that this does not imply a lack of support for other types of assets. We do accommodate
+a wide range of asset types, but instead of a preview, a link to the asset will be provided. If a user clicks on this
+link, they will be redirected to a new tab where the asset will be displayed. For instance, if the asset is a video, it
+will be played in the new tab, and if the native browser supports it, an accurate preview of an asset will be shown.
+
+### Properties support
+
+The table herein outlines the properties that are specifically parsed/rendered in our Explorer. You have the ability to
+view the complete metadata JSON in our dedicated metadata preview section.
+
+| Property | Description                                       |
+|----------|---------------------------------------------------|
+| *image*  | URL to the image, it can be any type of an image. |
+| *name*   | Name of the asset.                                |
+
+## Upcoming
+
+Here is the proposed upcoming metadata structure. We kindly request that you adhere to these guidelines to ensure that
+your metadata is correctly interpreted and displayed within our explorer.
+
+| Property        | Description                                                                                                                                                                                                                                                    |
+|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| *image*         | URL to the image, it can be any type of an image. In the context of video content, this refers to a thumbnail representation of the respective video.                                                                                                          |
+| *name*          | Name of the asset.                                                                                                                                                                                                                                             |
+| *description*   | Description of the asset.                                                                                                                                                                                                                                      |
+| *attributes*    | Attributes of an asset.                                                                                                                                                                                                                                        |
+| *animation_url* | URL to multi media asset. Our initial development plan includes support for video content. The incorporation of other media types is also under consideration and may be introduced at a future date, depending on the level of demand and usage requirements. |
+
+Inspiration from [source](https://docs.opensea.io/docs/metadata-standards#metadata-structure)
+
+#### Planned action items
+
+- Add support for video assets.
+- Add support for [ERC-1155](https://github.com/ethereum/ERCs/blob/master/ERCS/erc-1155.md)
+- Add attribute support
+- Add support for different kind of assets(audio, documents,...)