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12 votes
1 answer
753 views

What is the difference between Babe, Aura, and Grandpa?

Substrate supports "pluggable consensus" so a developer can choose from among several consensus algorithms. The main Substrate repository contains four algorithms: Aura Babe Proof of Work ...
JoshOrndorff's user avatar
  • 1,201
8 votes
2 answers
392 views

How to revert a bricked chain due to bad setCode

I upgraded a chain that uses Grandpa/Aura with code for instant seal by mistake. I believe it may be possible to revert some blocks: https://github.com/paritytech/substrate/pull/1479 But cannot find ...
twhitehead's user avatar
4 votes
1 answer
174 views

Started getting: Aura pallet "Slot must increase" Error on running collator

Recently I started getting the following error thrown in the on_initialize hook of the aura pallet: 2023-12-08 14:24:54 [Parachain] panicked at 'Slot must increase', /.cargo/git/checkouts/substrate-...
Sebastian's user avatar
  • 411
2 votes
1 answer
115 views

How to access and sign messages with keys from SessionKeys Keystore such as Aura?

I would like to sign and gossip messages in an offchain service and leverage keys from the keystore used by the SessionKeys such as the Aura/Grandpa/etc. key. Our current strategy requires us to ...
Drew Stone's user avatar
  • 1,194
1 vote
0 answers
38 views

pallet_authorship implementation doesn't work with Aura consensus

I'm trying to get the authors of the blocks using the pallet_authorship but when I inspect the authorship on the polkadot.js app I get none as result. This is my implementation of the ...
viac92's user avatar
  • 107
0 votes
1 answer
191 views

NPoS with Aura - no planned era

UPDATE: The election always finalizes with Election Fallback and set of validators doesnt't and neither does the Era, but sessions keep increasing. I understand that an era is just a couple of ...
Muhammad Talha Dar's user avatar