Metadata in blockchain includes timestamps, transaction details, smart contract data, digital signatures, Gas fees, IPFS links, oracle information, and non-fungible token (NFT) metadata, thereby enabling diverse functionalities and information storage within the blockchain network.

Timestamp

Each block in the blockchain contains a timestamp indicating the moment the block was added to the chain. The time of a transaction is recorded via this metadata.

Transaction Details

The addresses of the sender and receiver, transaction amount, and various transaction IDs are just a few examples of the metadata that can be included with each transaction on the blockchain.

Smart Contract Data

When a smart contract is executed on the blockchain, the parameters and input data required for the contract to operate may be included in the metadata.

Digital Signatures

To verify the legitimacy of a transaction and prove ownership, the metadata includes digital signatures.

Gas Fees

On blockchains like Ethereum, the metadata may include details about the Gas fees associated with processing the transaction. Miners and validators need this information to prioritize transactions.

IPFS Links

Links to IPFS (a decentralized file storage system) can be found in blockchain metadata. Users can access data on the blockchain by retrieving references to IPFS files, typically in the form of hashes, as needed. This method can be used to store large files, including images, videos, or documents associated with on-chain assets like NFTs.

Oracles

Oracles are external services that provide smart contracts with access to real-world data. Information from these oracles may be included in blockchain metadata to trigger smart contract activity.

Non-Fungible Token Metadata

NFTs often include metadata such as the creator, description, and other details about the digital or physical assets they represent.