[Feature Request]: Get blob index upon submitting it #4412
Description
Implementation ideas
As part of our DA proof system, we use sequences of spans as recommended by Celestia. To recover this index after submitting it, I haven't found a better method than calling Blob.Get, forcing me to download up to MBs of data just to recover an index.
It would be great if the ODS index could be returned from the call to Blob.Submit, or at least have an endpoint to fetch blob metadata without downloading the blob itself.