mtc_worker: Update log and cosigner ID #140
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cjpatton
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Oct 21, 2025
Assign all deployed logs ("dev1", "dev2", and "shard1") a distinct OID
from the space on Cloudflare's PEN allocated for MTC experiments. Also,
use a distinct OID for the cosigner for each log. (Each has its own
secret key.)
This is a breaking change that will require a migration to first delete
all durable object data. The reason is that signatures for existing
artifacts no longer verify:
```
dev2: Initializing log from fetch handler
dev2: Log exists, not creating
▲ [WARNING] dev2 failed to submit timed-out batch: Error: Error: invalid signature for key localhost:8787/logs/dev2+f0b8bc08 - Cause: Error: invalid signature for key localhost:8787/logs/dev2+f0b8bc08
[wrangler:info] POST /logs/dev2/add-entry 503 Service Unavailable (1069ms)
✘ [ERROR] Uncaught invalid signature for key localhost:8787/logs/dev2+f0b8bc08
✘ [ERROR] Uncaught Error: invalid signature for key localhost:8787/logs/dev2+f0b8bc08
```
Alternatively, we could spin down these logs and spin up new ones.
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Closes #137.
Assign all deployed logs ("dev1", "dev2", and "shard1") a distinct OID from the space on Cloudflare's PEN allocated for MTC experiments. Also, use a distinct OID for the cosigner for each log. (Each has its own secret key.)
This is a breaking change that will require a migration to first delete all durable object data. The reason is that signatures for existing artifacts no longer verify:
Alternatively, we could spin down these logs and spin up new ones.