Questions tagged [parachain]

Questions about blockchains connected to relay chains like Polkadot or Kusama.

Filter by
Sorted by
Tagged with
1 vote
0 answers
11 views

What should be the proper XCM format?

I'm not sure if these are the right questions to ask, as I'm pretty new to the world of Cross-Consensus Messaging (XCM), but I'm really curious about how to properly create XCM instructions or an XCM ...
Noah's user avatar
  • 23
0 votes
1 answer
11 views

How to send data from parachain to relaycahin

Hello everyone I am working on a project where I need to send some data or messages from my custom parachain to a custom relaychain, then I want to map with a particular account and store it on ...
manish singh's user avatar
0 votes
2 answers
59 views

Superuser xcm origin being used on reserve asset transfer from asset hub to parachain

I'm testing a reserve asset transfer from polkadot asset hub to a parachain using chopsticks, the transfer is failing, I think this is because the xcm origin being used for the reserve asset transfer ...
Sebastian's user avatar
  • 407
1 vote
1 answer
18 views

Could not decode `ChargeAssetTxPayment::asset_id`

This is my parachain, I am getting this error while doing transaction. 1002: Verification Error: Runtime error: Execution failed: Runtime panicked: Bad input data provided to validate_transaction: ...
Ganesh11's user avatar
  • 1,241
0 votes
0 answers
11 views

Unfortunately error when submitting transactions in polkadot

In my project when I submit the transaction I'm getting [error: polkadotxcm.filtered]
Preethi M's user avatar
1 vote
0 answers
17 views

Coretime. How to check are there any coretime assigned to parachain

Followed this instruction. https://forum.polkadot.network/t/parachain-consensus-updates-coretime-asynchronous-backing-scalability/4396/5 aura keys contains 2 accounts. Run only one collator and ...
rust.dev's user avatar
  • 519
0 votes
3 answers
65 views

Unroutable Error when performing reserve asset transfer of DOT from parachain to asset hub

I'm getting an "Unroutable" Error when performing reserve asset transfer of DOT from parachain to polkadot asset hub. I have tested it on rococo using the same wasm for the parachain and I'm ...
Sebastian's user avatar
  • 407
1 vote
0 answers
52 views

Error TooExpensive when transferring fungible assets between parachains

I'm trying to transfer fungible assets between two parachains. I'm using Westend relay chain, Westmint as first para and custom parachain as second para. I launched my setup with zombienet and opened ...
Artem Levchuk's user avatar
0 votes
2 answers
32 views

Is it it possible to change native token decimals of chain that is already running?

A blockchain I am working on enabled Frontier recently but since EVM chains' native tokens got 18 decimals by default and the chain's native token decimals are set to 12 we need to do decimals ...
chexware's user avatar
  • 325
1 vote
1 answer
13 views

How to add session keys for the collators set as invulnerables are in the nodes?

I am running collators node and I want to add session keys for the collators set as invulnerables in the node. I am using rpc author.insertKey but I am getting RPC call is unsafe to be called ...
Ganesh11's user avatar
  • 1,241
1 vote
0 answers
9 views

How to properly execute a parachain backup and recover the chain state

I'm trying to execute a recovery from a manually stalled parachain. I'm doing the following, Backup the base-path folder for the block #30 Let the parachain produce more blocks, until #40 Brick the ...
Alexandre Ribeiro's user avatar
0 votes
1 answer
32 views

execute_block, initialize_block, apply_extrinsic, finalize_block, offchain_worker exists for struct `Executive` but its trait bound were not satisfied

I developed substrate parachain with custom pallets. Actually I wanna add OCW functionality to one of my pallets. After I updated runtime code and added CreateSignedTransaction implementation I tried ...
Artem Levchuk's user avatar
0 votes
0 answers
26 views

Rpc methods not decorated

Goal I'm trying to decorate the rpc methods to be able to interact with api.tx. If anyone has faced this issue, what has helped you out? Issue I'm not able to access tx method inside of api, which I ...
Peter Kim's user avatar
0 votes
1 answer
9 views

How to craft the xcm call from a parachain to the relay chain's registrar.swap extrinsic (for extending the parachain lease period)?

Is there some documentation explaining how to craft the xcm call from a parachain to the relay chain's registrar.swap extrinsic (in the context of extending the parachain lease period)?
Josh's user avatar
  • 425
0 votes
0 answers
10 views

Connecting a libp2p node to the Substrate Parachain Network

Goal Add a libp2p node to the Substrate parachain network to have Idle 0 peers to 1 peer. Method I'm using mdns as the discovery mechanism. Libp2p Config: const options = { peerId: peerId, addresses:...
Peter Kim's user avatar
0 votes
1 answer
31 views

Connect a local node to the Rococo Parachain Network

Issue: Currently, I have a parachain and a relay chain running on Rococo testnet locally. I'm having trouble connecting my node to the parachain network (0 peers to 1 peer). Goal: I'm trying to ...
Peter Kim's user avatar
3 votes
1 answer
33 views

chain stop producing block after adding pallet-session

I'm working on the pow substrate chain with grandpa. For that I integrate the pallet-session and substrate-validator-set[https://github.com/gautamdhameja/substrate-validator-set/tree/master] to join ...
Deepak Chaudhary's user avatar
1 vote
0 answers
12 views

"Invalid" error thrown after enabling async backing

After enabling async backing for our parachain, it started throwing an "Invalid" error every time an extrinsic is called, for example, performing a transfer or creating an asset,the strange ...
Sebastian's user avatar
  • 407
1 vote
0 answers
18 views

parachain not producing blocks?

I am using relay chain of polkadot with branch 1.1.0 of polkadot sdk. i have my relay chain running with era and epoch time of 2 minutes each . while changing lease period to 10 minutes and keeping ...
Karanvir Singh's user avatar
3 votes
0 answers
20 views

Upgrading parachain runtime for async backing "Timing by Block Number" question?

After reviewing this guide on upgrading the runtime of a parachain for async backing, I have a few questions regarding the "Timing by Block Number" section of phase 3, it mentions that ...
Sebastian's user avatar
  • 407
0 votes
0 answers
15 views

Timestamp inherent data must be provided panics on Seedling runtime

I have built a basic setup of a local Rococo-relay chain and 2 collators to run the Seedling runtime: https://github.com/paritytech/polkadot-sdk/tree/master/cumulus/parachains/runtimes/starters/...
metricaez's user avatar
1 vote
1 answer
43 views

Must-have Parachain pallets

Which are the absolute must-have pallets that need to be added to a runtime to make it parachain-compatible? I am looking at the parachain template. Are the XCM helpers necessary?
lime's user avatar
  • 121
1 vote
0 answers
26 views

how to know about token implementation?

I have a questions about Tokens in polkadot ecosystem , If I am on parachain and this parachain A uses a token from another parachain B , if this token implements on_transfer hook does this hook will ...
castle_chain's user avatar
0 votes
0 answers
17 views

Getting inconsistent block time even after implementing asynchronous backing in parachain

i am getting block time of parachain 12 to 30 sec even after implementing asynchronous backing in it.what can be the issue??
arpit's user avatar
  • 1
0 votes
1 answer
44 views

How can we read the smart contracts deployed on the relay chain parachain

Is there a similar feature to etherscan where codes are human readable? Or solcscan where contracts are in bytecodes? I can't seem to find any explorer.
anonauditor's user avatar
1 vote
1 answer
68 views

Opening crowdloan for already running parachain with same ParaId

Previously, if a parachain wants to continue running and extend lease on Polkadot/Kusama, after winning first slot with crowdloan, it would need to perform direct bid or to get slot with different ...
NZT's user avatar
  • 23
2 votes
3 answers
108 views

Error Bad origin on custom XCM integration

I am building custom XCM pallet. While executing specific call: The destination is of ParaId type. match send_xcm::<T::XcmSender>( (Parent, Junction::Parachain(destination.into()...
Dudo's user avatar
  • 21
0 votes
1 answer
62 views

SendFailure error when performing reserve asset transfer from rococo asset hub to parachain

I'm getting a SendFailure error(on asset hub) when performing a reserve asset transfer of ROC from rococo asset hub to a parachain, does anyone know what might be the cause? Or how can I further debug ...
Sebastian's user avatar
  • 407
1 vote
0 answers
38 views

Parachain doesn't produce blocks(collation wasn't advertised to any validator)

I'm currently engaged with the Polkadot relay chain version 1.1.0, and I've encountered an issue in the parachain where block production is not occurring. My configuration involves two validators in ...
Arunjot Singh's user avatar
1 vote
1 answer
90 views

How to list a Parachain on Rococo using CoreTime

As we know previously, securing a parachain slot was a competitive process through an auction mechanism. With coretime rental, there is no need for slot auctions anymore. Teams can purchase ...
Boleng's user avatar
  • 475
0 votes
0 answers
42 views

Parachain does not producing blocks

When I link a relay chain to the parachain using the Local chain type, it successfully generates blocks. However, upon changing the chain type to live in chain_spec.rs, block production fails, and an ...
Arunjot Singh's user avatar
1 vote
1 answer
78 views

What's coretime?

What is coretime? I do know this will affect the current parachain aution/slot model. But does this conflict with the on-demand parathread, or will it replace the existing on-demand parathread model? ...
AurevoirXavier's user avatar
1 vote
0 answers
22 views

How do I disable grandpa in polkadot-parachain?

There is a flag that you can add when running polkadot-parachain --no-grandpa Disable GRANDPA. Disables voter when running in validator mode, otherwise disable the ...
forgetso's user avatar
  • 1,492
3 votes
0 answers
96 views

What's the best practice of the On-demand parachains in 2024?

Before the Coretime, the only choice for the on-demand parachain is parathread (please correct me if I am wrong), there is a discussion https://forum.polkadot.network/t/on-demand-parachains/2208 and ...
boundless-forest's user avatar
0 votes
1 answer
43 views

error[E0576]: cannot find associated type `RuntimeCall` in trait `pallet_nfts::Config`?

"I'm developing a pallet called xnft for cross-chain NFT transfers. To achieve this, I have to utilize functions from the Frame NFT pallet and incorporate RuntimeCall in its configuration. ...
Ipsa Gupta's user avatar
0 votes
0 answers
24 views

Parachain didn't produce blocks

While im running the parachain , its not not producing any blocks, but its showing the stat collation in logs. im using docker containers for running relay and parachains. polkadot v1.0.0 and pokadot-...
SHANITH K K's user avatar
1 vote
1 answer
41 views

How much internet uptime is required for running parachain or parathread?

I have a home internet connection of 80-95% uptime with 7-10 Mbps speed. Is it possible to run a parachain or parathread node without taking any cloud services? Here, is some docs: The good news is ...
Amiya Behera's user avatar
0 votes
1 answer
18 views

How to locked token in chain?

I want to locked token, how can we do this?
Ganesh11's user avatar
  • 1,241
2 votes
1 answer
42 views

Parachain stops producing blocks after runtime upgrade

I am testing a parachain runtime upgrade locally. After calling the enactAuthorizeUpgrade, the parachain stops producing blocks, and the logs show error: Collation wasn't advertised to any validator. ...
Sebastian's user avatar
  • 407
1 vote
1 answer
49 views

How does parachain upgrade works?

Let we have a running parachain on kusama and want to do a runtime upgrade. New runtime is bigger then the old one by 100 kb. New runtime will be stored on the relay chain after runtime upgrade ...
Данила Алексеев's user avatar
2 votes
0 answers
24 views

Is it possible to register parathread with compact.compressed wasm file

In official guides they use wasm built with export-genesis-wasm command to register a parathread/parachain: https://youtu.be/BaWcQxKRFmM?t=134 https://docs.substrate.io/tutorials/build-a-parachain/...
Данила Алексеев's user avatar
0 votes
0 answers
26 views

generate types from chain does not work. Documentation is not clear

I dont think typegen is working as expected per documentation, by following the provided example and adapting it to my parachain. ` Found 244 errors in 5 files. Errors Files 5 src/interfaces/augment-...
rvalle's user avatar
  • 45
1 vote
1 answer
289 views

What is chain decimal?

I saw token decimal has different value like 12, 10, 6 in different substrate chain, What exactly it means and what is the use of it?
Ganesh11's user avatar
  • 1,241
5 votes
0 answers
73 views

"Not Requested Block Data" synching a parachain node

I am facing an issue with syncing new nodes to the bootnodes of my parachain on Kusama. The bootnodes were synced using the following commands: For fast sync: binary --chain <parachainchain> -- ...
ALeSD's user avatar
  • 489
1 vote
0 answers
51 views

I want to clone a stable coin project in Rust but having a lot of errors

I am facing too much errors when I clone this project, I want to create a stable coin in substrate I found this repository https://github.com/1010adigupta/ink-Stable-Coin But after installing rust ...
Shah Dost's user avatar
1 vote
1 answer
22 views

What is a concrete use case for cumulus's ability to return custom head data

This question is about cumulus PR https://github.com/paritytech/cumulus/pull/825. What is an example of when I would want to use custom head data. The PR description itself says: This can be for ...
JoshOrndorff's user avatar
  • 1,181
0 votes
1 answer
41 views

XcmError::TooExpensive When trasfering fungible assets between statemine & trappist parachains with rococo relay chain (limitedReservedTransferAssets)

I'm trying to test transfer of fungible assets from Statemine to Trappist with Rococo relay chain to integrate assets to my custom parachain. First of all, I tried to repeat the steps shown in the ...
Artem Levchuk's user avatar
2 votes
0 answers
55 views

Recovering a Bricked (no block production) Parachain on Rococo, Kusama, & Polkadot

Introduction In the Substrate ecosystem, a bricked parachain – one that has halted block production – presents a unique set of challenges. This situation can occur in various environments, notably on ...
Cedric Decoster's user avatar
1 vote
1 answer
105 views

Parachain not including all transactions from tx pool into block

Context OriginTrail Parachain Mainnet is pushing significant amount of transactions (175k/day) - with tendency of growth Collators are filling blocks up at ~25% of block weight, with a large pending ...
NZT's user avatar
  • 23
2 votes
3 answers
132 views

How do I modify the chain spec for a local relay chain to have an additional relay chain validator? (I already have two: Alice and Bob)

I am referring this documentation on preparing a local relay chain in which they have provided a plain sample relay chain spec. Also, I have cloned this release locally. The documentation says that ...
RRR's user avatar
  • 43

1
2 3 4 5
9