Block Filtering Example

This example subgraph stores Block objects that represent blocks appended to a Cosmos chain. It's a very simple implementation where just the block number and the block timestamp is saved to the store.

Generating a manifest

The subgraph is compatible with multiple Cosmos networks so before building the subgraph you need to generate a manifest file for the network of your choice. In case of the Cosmos Hub network, run the following command:

$ yarn prepare:cosmoshub

For the list of supported networks, see the scripts in the package.json file.

Querying the subgraph

With the following query, you can retrieve all the appended blocks between two dates:

query BlocksBetweenDates($timestamp_start: BigInt!, $timestamp_end: BigInt!) {
  blocks(where: {timestamp_gt: $timestamp_start, timestamp_lt: $timestamp_end}) {
    id,
    number,
    timestamp
  }
}

{
  "timestamp_start": 1613653200,
  "timestamp_end": 1613656800
}

For more information see the docs on https://thegraph.com/docs/.