Look up block by either seqno, lt or unixtime.
/lookupBlock
Workchain id to look up block in
Shard id to look up block in
Block's height
Block's logical time
Block's unixtime
curl -L \ --url 'https://ton.nownodes.io/lookupBlock?workchain=1&shard=1' \ --header 'X-API-Key: YOUR_API_KEY'
{ "ok": true, "result": "text", "error": "text", "code": 1 }