Our solution consists of 3 main parts: 1. We already have metadata for all NFTs and their transfers stored from when we built https://nft.tokenhunt.io (also open sourced). 2. An API with the following endpoints: /accounts//image - Retrieve image (or blockie if unset) for an eth address /collections//tokens//image - Retrieve image for an NFT 3. An example application to demonstrate how to use web3images

We use ENS for resolution. We use python + ether libs for getting nft data. We use react for frontend and ipfs for hosting files. It's all up and running at web3-images.kibalabs.com and the code is up at https://github.com/kibalabs/web3-images. The apis are web3-images-api.kibalabs.com/v1/accounts//image and web3-images-api.kibalabs.com/v1/collections//tokens//image