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Fix Statemint - Aura Key Scheme
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After Shell successfully processed the runtime upgrade to Statemint and handed over block production to the Statemint collators, they were not able to produce blocks due to a mismatch in key types. Specifically, Aura uses sr25519 keys to sign blocks, but the keys in the genesis chain spec were generated using ed25519.
A new runtime was created as a temporary fix. This runtime enables ed25519 in Aura for Statemint. This will be enacted on the Relay Chain so that validators will be able to validate the collator signatures. After the chain is producing blocks again, a follow up runtime upgrade will migrate Aura back to using sr25519 keys.
Call hash: 0x0e21b5233c7591ee89eca0cae71cf9a9a4c45fe2393075ab33361a673f5d322d
Preimage:
- Shell updated Statemint and started block production with collators.
- There was a problem because two types of keys were used: sr25519 and ed25519.
- Aura needed sr25519 keys but was using ed25519 keys from the start.
- A temporary fix was made to use ed25519 keys in Aura for Statemint.
- This change will help validators check the signatures on blocks.
- After resolving the issue, a further upgrade will switch back to sr25519 keys.
- A special call hash was created for this update.
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