fix: use Binary for checksum and merkle path so base64 deser works
#384
| Job | Run time |
|---|---|
| 2m 23s | |
| 6m 46s | |
| 25s | |
| 1m 49s | |
| 1m 54s | |
| 14s | |
| 2m 3s | |
| 1m 17s | |
| 2m 32s | |
| 19m 23s |