curl --request GET \
  --url https://arch-testnet.gomaestro-api.org/v0/rpc/block/latest \
  --header 'api-key: <api-key>'

{
  "data": {
    "bitcoin_block_height": 123,
    "hash": "<string>",
    "height": 123,
    "merkle_root": "<string>",
    "previous_block_hash": "<string>",
    "timestamp": 123,
    "transaction_count": 123,
    "transactions": [
      "<string>"
    ]
  },
  "last_updated": {
    "block_hash": "<string>",
    "block_height": 123
  }
}