Budget: 3000 UAH Deadline: 1 day
for this task I would pay attention to the project https://github.com/hardbyte/python-can
It has a lot of necessary utilities, including dumping the band to the text file, which will then help to delete the whole process.
The CSC check feature is in the example https://github.com/hardbyte/python-can/blob/main/examples/cyclic_checksum.py
You can try to do what you just need to do a dump for some time period due to the lack of direct access to jetson nano and own the CAN band itself with data.