All Questions
15 questions
1
vote
0
answers
35
views
Why does a block in Substrate-based blockchain have no author and no reward points?
We encountered an issue in our Substrate-based blockchain network where a block has no author and no reward points were given to any validator. This block was finalised. The block was an era-...
- 156
4
votes
1
answer
71
views
Why does Grandpa not use sr25519?
I note that Grandpa uses ed25519 keys rather than the substrate standard of sr25519.
Is it because sr25519 signatures are non-deterministic? ( Why are sr25519 signatures non-deterministic? ) or is ...
- 3,901
1
vote
0
answers
37
views
Replace GRANDPA finanlity
Hello can someone please help me understand all steps and all functions needed to be implemented for replacing finality gadget in experimental substrate chain?
- 111
2
votes
2
answers
271
views
Block finalization stalled
I have been running a testing network recently and they have encountered a very strange situation:
the finalized has stopped at # 107379 and cannot be further confirmed.
The logs of each consensus ...
- 21
9
votes
2
answers
252
views
Grandpa stuck at "Polling"
I am trying to spin up a small BABE PoS network of four nodes and not able to get GRANDPA to start.
It's hard to know what exact pieces of information to provide, here are some notes.
A few notes:
I ...
- 566
6
votes
1
answer
89
views
How to achieve instant finality with substrate?
Ideally, I would like to build a chain with Substrate but using Tendermint as the consensus engine.
The problem is that it's a lot of work to implement it correctly.
But what if I use AURA (round ...
2
votes
0
answers
86
views
Switching from `Aura` to `Babe` consensus causes error "Incomplete block import pipeline" on genesis block
I am trying to switch from Aura to Babe consensus. After successful building and node start I am getting an error "Block import error: Incomplete block import pipeline.". This happens with ...
0
votes
1
answer
28
views
Node template based network runs with multiple peers using the same identity
I noticed some interesting behavior while running a local test net on my machine. I booted up a network between the default Alice and Bob accounts that are used in all the tutorials, and they ...
- 101
0
votes
1
answer
200
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 ...
4
votes
1
answer
67
views
In substrate, does the genesis block get finalised the same way as the subsequent blocks?
In substrate, does the genesis block get finalised the same way as the subsequent blocks, or is finalisation of the genesis block a special case?
6
votes
1
answer
89
views
Substrate chain reconcilliation with BABE/GRANDPA
With BABE, I understand validators to produce blocks and chosen randomly and multiple validators may be eligible to produce a block, already providing a large amount of forks/fork opportunities. If no ...
- 125
6
votes
1
answer
122
views
What this 'grandpa-voter' error means?
I was doing last section of substrate private network tutorial.
Before i stored key set, i could started network smoothly.
But after i stored key set of aura and grandpa, i got this error.
yc6936@...
- 61
8
votes
2
answers
415
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 ...
- 171
8
votes
1
answer
775
views
Recovering from stalled finality (babe/grandpa)
While experimenting with a relay chain testnet, Decentration and I ran into this issue with multiple validators on the same node, stalled finality and got the chain into slow block-making mode.
We ...
12
votes
1
answer
794
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
...
- 1,211