Getting Storage Diff on Operation Level

[touhonoob]

I am wondering if it's possible to get storage diff from /v1/operations/transactions similar to the result of https://api.better-call.dev/v1/opg/xxx

[Groxan]

TzKT doesn't process storage diffs, but stores the whole storage objects for performance reasons. The only way to do that is to calculate diffs on your end by processing a sequence of storage changes.

You can get all storage changes in two ways:

• /v1/contracts/{address}/storage/history;
• /v1/operations/transactions?target={contract}&select=id,storage&sort.desc=id (note, if storage is null, then it wasn't changed).

Then you can compare each storage object with the previous one to find diffs.

[Groxan]

Feel free to re-open, or just comment if you have any other questions.

[touhonoob]

TzKT doesn't process storage diffs, but stores the whole storage objects for performance reasons. The only way to do that is to calculate diffs on your end by processing a sequence of storage changes.

You can get all storage changes in two ways:

• /v1/contracts/{address}/storage/history;

Thank you for the detailed response.
I have a question about how is the storage history being recorded? Is it per-block or per-operation?
My use case will require per-operation level storage diff.

[Groxan]

Yes, it is per operation

[touhonoob]

@Groxan just figured out that storage diff could be retrieved quite easily using raw SQL queries joining tables thanks for the help!