Questions tagged [npos]
The npos tag has no usage guidance.
18
questions
0
votes
0
answers
45
views
Maintained Substrate-NPoS-template?
Substrate has a substrate-node-template with Aura consensus which is well maintained and updated time to time. Do we have a same kind of template for NPoS consensus which is well maintained and ...
- 759
1
vote
1
answer
26
views
Patent for NPoS (Nominated Proof of Stake)
Does anyone know where this patent is discussed in the Polkadot or
Substrate docs?
Does anyone know the patent details, numbers, etc.?
4
votes
1
answer
235
views
Why we should choose DPOS over NPOS or NPOS over DPOS?
I want to understand if we want to integrate the proof of stake consensus for our chain. So which consensus we should go for NPOS(Nominated proof of stake) or DPOS (Delegated proof of stake)?
How we ...
- 1,896
0
votes
1
answer
70
views
`UnknownTransaction::CannotLookup` error on each extrinsic
I've implemented unified accounts in a NPoS consensus-based substrate chain, and modified the polkadot-js/apps accordingly as well. The transactions through metamask go through successfully, but I'm ...
- 382
0
votes
1
answer
49
views
Fixed Validator Rewards in an NPoS Substrate chain
Is it possible to have fixed validator rewards on each epoch in a NPoS consensus based substrate chain. This suggests that the rewards are based on inflation and stake rate, and I've not seen any ...
- 382
0
votes
0
answers
38
views
staking.StakingElectionFailed in a Substrate NPOS chain
I've developed an EVM compatible chain with NPOS as its consensus mechanism, but on the completion of each era, I get this error that staking.StakingElectionFailed. What could be the reason for this?
...
- 382
0
votes
0
answers
76
views
build NPOS EVM commpatible chain
What's the best project setup to build an NPoS and EVM Compatible chain at this moment?
Which version/branch of polkadot release to use? such as polkadot-v0.9.22 or polkadot-v0.9.18?
Use ORML or ...
0
votes
1
answer
58
views
How could I get that reward amount of the nominator
As a developer，I want to use the interface to search this information: which can get the amount which nominator has been rewarded at every era and staking?
- 305
0
votes
2
answers
134
views
Babe PoA to NPoS migration
Here's my babe pallet configuration: I suppose that for PoA we want to keep the same
authority set
impl pallet_babe::Config for Runtime {
type EpochDuration = EpochDuration;
type ...
- 171
3
votes
0
answers
52
views
NPOS not working after adding the EVM to node config in substrate
I have implemented the NPOS with EVM blockchain using the substrate.
NPOS working fine but after adding EVM to Genesis config in node the NPOS is not working and the staking election failed.
Smart ...
5
votes
0
answers
86
views
fp_evm::GenesisAccount causes StakingElection.fail
As the title says, I have added EVM Compatibility to my NPoS runtime(using chainsafe/substrate-node-template), and when i run my node with Alice and Bob validators, the StakingElection begins to fail.
...
0
votes
1
answer
147
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 ...
1
vote
0
answers
31
views
Polkadot Election Failure
I created a Polkadot private chain with 5 validator candidates and 4 validator active. If I set 1 epoch = 1 era and shutdown one active validator, there is no problem, the standby validator takes over ...
- 51
8
votes
2
answers
137
views
When inserting authority keys, should I choose the controller derivation, the stash derivation, or just the vanilla secret?
Starting a PoS network, I realised that my local node requires keys to start producing blocks. Unlike in test networks where I could simply pass --alice and have the validator keys inserted into the ...
- 3,702
10
votes
1
answer
106
views
Why only top 256 nominators are rewarded for an oversubscribed validator on Polkadot?
According to the Wiki article - https://wiki.polkadot.network/docs/learn-nominator#oversubscribed-validators only the top 256 nominators of an oversubscribed validator receive rewards. It also ...
- 956
11
votes
1
answer
413
views
How to upgrade consensus engine of a live chain from PoA to PoS? [duplicate]
I am working on a substrate based blockchain that is in production. We started the node using PoA consensus but now we want to switch to PoS consensus. I did the necessary changes i.e added necessary ...
- 145
10
votes
2
answers
78
views
What is MAX_NOMINATIONS?
In this code :
sp_npos_elections::generate_solution_type!(
#[compact]
pub struct NposCompactSolution16::<
VoterIndex = u32,
TargetIndex = u16,
Accuracy = sp_runtime::...
- 377
5
votes
1
answer
89
views
What is the difference between pallet_elections_phragmen and sp_npos_solution?
Just breezing through the docs for both crates, I can see that they both provide an implementation of phragmen's election algorithm, where sp_npos_elections provides an additional PhragMMS and ...
- 3,702