fix: use Binary for checksum and merkle path so base64 deser works
#377
| Job | Run time |
|---|---|
| 2m 53s | |
| 1m 24s | |
| 1m 30s | |
| 6m 5s | |
| 2m 48s | |
| 23s | |
| 4m 37s | |
| 2m 40s | |
| 5m 7s | |
| 27m 27s |