curl --location 'https://mainnet-api.explorer.nervos.org/api/v2/blocks/ckb_node_versions' \ --header 'Accept: application/vnd.api+json' \ --header 'Content-Type: application/vnd.api+json'
{ "data": [ { "version": "0.101.1", "blocks_count": 10000 }, { "version": "0.103.2", "blocks_count": 5000 } ] }