curl --request GET \
  --url https://nexus.gerowallet.io/api/btc/blocks/{idOrHeight} \
  --header 'Authorization: Bearer <token>'

{
  "hash": "<string>",
  "height": 123,
  "time": 123,
  "mediantime": 123,
  "txCount": 123,
  "size": 123,
  "strippedsize": 123,
  "weight": 123,
  "version": 123,
  "merkleroot": "<string>",
  "nonce": 123,
  "bits": "<string>",
  "difficulty": 123,
  "chainwork": "<string>",
  "previousblockhash": "<string>",
  "nextblockhash": "<string>",
  "confirmations": 123
}