This repository contains a simple API built with Node.js and Express. The API provides endpoints for retrieving data about Ethereum addresses and NFT collections.

• Getting Started
• Endpoints

1. Clone the repository.
2. Run npm install to install the necessary dependencies.
3. Create a .env file in the root directory of the project and add the following environment variables:

PORT=<port-number>
API_KEY=<api-key>

Replace with the port number you want to use for the server, and with your Ethereum API key.

4. Run npm start to start the server.

The API provides the following endpoints:

• GET /age/:address - Returns the age in years of the provided Ethereum address.
• GET /age/collection/:contract - Returns the average age in years of all the addresses that own NFTs from the specified collection.
• GET /age/collection/:address/each - Returns the ages in years of all the addresses that own NFTs from the specified collection.

• GET /nft/:address - Returns all the NFTs owned by the specified Ethereum address.
• GET /nft/collection/:address - Returns all the NFTs owned by all the addresses that own NFTs from the specified collection.
• GET /nft/collection/:address/common - Returns top 3 nft contracts that are common among all owners of specific collection