Use of Covalent API
The V1 of PixelProperty has been on mainnet since 2018. The PixelProperty team wanted to make it cross-chain and remove dependency on the Etheruem full node they were running. For historic data, the contract emits a SetColors event when drawing, and one of our features is creating a timelapse.
A SQLite3 database was created for saving events that have been requested (to reduce re-requests on the API), and it iterates through all the events propagated by the mainnet contract, and saves them into a local database which can then be quickly query when needed.
The project was built at #ETHGlobal - Scaling Ethereum
- Carson Roscoe