[feature request] Return block hashes from `FindBlockHeaders` query

[0x009922]

Use case

In Explorer, we need to display blocks basic data, without its transactions. We display transactions separately, with pagination, lazily.

Problem

• FindBlockHeaders returns data without block hashes
• FindBlocks returns all blocks data, including all transactions. The amount of transactions could be vast, and it creates extra overhead for explorer to load them all eagerly.

Desired solution

Implement FindBlockHeaders in a similar way to how FindTransactions works: it does not return a list of plain CommittedTransaction, but a list of TransactionQueryOutput - a wrap around CommittedTransaction with additional block_hash field.

[mversic]

FindBlockHeaders returns data without block hashes

a block hash is the hash of it's header, i.e. you can calculate it on the client side. I would close this issue

[0x009922]

Understood, than it is fine!