Infura has come out swinging with a potential replacement for blockchain indexing.
Link: https://docs.infura.io/infura/infura-expansion-apis/nft-api
The included script will include everything you need to start shaping your own custom API calls to their endpoints and query data like:
- Transfers
- Ownership
- Metadata
- Collections
- Market Data
In the included example, we query all the owners for a specific token on the Cronos testnet. The results looks like this: