Get the top level transaction IDs for the block on the given round.
  GET /v2/blocks/{round}/txids     
 GET
 /v2/blocks/{round}/txids
 Authorizations
Parameters
Path Parameters
 round 
 required
   integer
The round from which to fetch block transaction IDs.
Responses
200
Top level transaction IDs in a block.
object
 blockTxids 
 required
   Block transaction IDs.
Array<string>
 400
Bad Request - Non integer number
An error response with optional data field.
object
 data    
 object
 message 
 required
   string
 401
Invalid API Token
An error response with optional data field.
object
 data    
 object
 message 
 required
   string
 404
Non existing block
An error response with optional data field.
object
 data    
 object
 message 
 required
   string
 500
Internal Error
An error response with optional data field.
object
 data    
 object
 message 
 required
   string
 default
Unknown Error