Questions tagged [moonbeam]

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Event subscription error from EVM compatible Substrate chain

i'm trying to listen events against a solidity smart contract deployed on EVM compatible Substrate chain and getting following error Error listening event ChangeOwner : Error: Returned error: Method ...
BlockBird's user avatar
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43 views

Error querying evm rpc endpoint on a node run by Chopsticks

I'm trying to run a local node using Chopsticks and connect to it using Metamask, but when I make the request to the eth-rpc-adapter, it fails. Here are the steps I followed with the corresponding ...
magecnion's user avatar
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How to implement XC-20 standard

I need help understanding XC-20 implementation and how its components interact. Suppose I run a parachain (ParaA) that aims to supports XC-20. I need to include Frontier so ParaA is fully EVM ...
magecnion's user avatar
  • 222
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Implementing FullDeps in Substrate rpc.rs using channels instead of Arcs

This is a standard implementation of FullDeps in the rpc.rs: // Full client dependencies. pub struct FullDeps<C, P, SC, B> { /// The client instance to use. pub client: Arc<C>, ...
Discardo's user avatar
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Can we access XCMp functions by writing moonbeam smart contract?

If my contracts which are deployed on moonbeam wants to interact with contracts deployed on acala (or) astar (or) any other parachain under polkadot hub, Is it possible to acheive it?
Aravind Makam's user avatar
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1 answer
38 views

Moonbeam Unified Accounts Implementation

Moonbeam implemented unified accounts to use H160 address type across all network is quit old, is there any codebase available to implement same with newly generated frontier node template or is it ...
Rehan's user avatar
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42 views

Moonbase parachain collator not producing blocks using zombienet

I am trying to run zombienet tests with 2 polkadot relay chain nodes and 1 parachain collator running the moonbeam binary. The test config is as follows: test.toml [settings] timeout = 1000 [...
Mihail Kirov's user avatar
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75 views

Mapping EVM Address to Substrate Address with Preserved Balance

I'm working on a project involving an EVM-compatible Substrate blockchain and facing a challenge. The problem arises when trying to map Ethereum-based addresses, acquired through Metamask, to the ...
Mr Coder's user avatar
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2 votes
1 answer
121 views

Issues with Function Call on EVM-Compatible Substrate Using Metamask and Polkadot

I'm working on a project using an EVM-compatible Substrate blockchain. I am encountering problems when trying to call functions on this Substrate instance. Here's the function used to sign and send ...
Mr Coder's user avatar
  • 923
3 votes
0 answers
46 views

Unified Accounts

We have followed the comets of moonBeam and implemented Unified Accounts. Now we're facing issues while adding session keys for aura, grandpa and I'm online. we're using this method for Aura and ...
BlockBird's user avatar
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94 views

How to connect to Polkadot Relay-Chain through the code of moonbeam parachain?

I want to connect polkadot relay chain but i'm not able to select keys for the customSpec generated by the binary of Moonbeam-Parachain. The customSpec is this-> { "name": &...
Wakar Seraj Khan's user avatar
3 votes
1 answer
106 views

Rationale on Moonbeam's GAS_PER_SECOND

I'm trying to understand the rationale behind Moonbeam's GAS_PER_SECOND: /// Current approximation of the gas/s consumption considering /// EVM execution over compiled WASM (on 4.4Ghz CPU). /// Given ...
Bernardo Rodrigues's user avatar
2 votes
1 answer
69 views

Error creating asset in moonbeam with zombienet

I'm trying to create an asset but I always get this error: This is my config.toml: [relaychain] default_command = "./bin/polkadot" chain = "rococo-local" [[relaychain.nodes]] ...
Ruben G's user avatar
  • 333
6 votes
0 answers
182 views

How to generate a Moonbeam Unified Account using Subkey?

In the Moonbeam Unified documentation here, it says that Moonbeam natively supports "Ethereum-style address (H160 format), which is 40+2 hex-characters long, in a Substrate based chain" and ...
Luke Schoen's user avatar
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1 vote
1 answer
44 views

Balance becomes zero after changing Account address type from Substrate address to Ethereum address

I am working on a scenario, where I have to upgrade my application and change account address type(from Substrate address to Ethereum address[similar to moonbeam unified account]). I made the ...
Boleng's user avatar
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1 vote
1 answer
91 views

Moonbeam #[precompile] procedural macro and Rust generics compilation error

I'm trying to write something similar to Moonbeam's assets-erc20 precompile. I'm using Moonbeam's #[precompile] procedural macros. pub type AssetIdOf<R> = <<R as pallet_evm::Config&...
Bernardo Rodrigues's user avatar
3 votes
0 answers
29 views

No rewards to block authors for validating transactions in a PoA chain

1- I've built a custom chain with unified accounts that uses PoA as its consensus, but there's no addition to the validator's balance on the confirmation of a transaction even though I've set in my ...
Discardo's user avatar
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1 vote
1 answer
31 views

How can we get prepare the proof for crowdloan pallet?

I am working on the moonbeams crowdloan pallet. In associate_native_identity extrinsic we need proof: MultiSignature in parameter. how can we get that?
Pankaj's user avatar
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1 answer
51 views

can we run MoonBeam as solo chain instead of Para chain

I have cloned the repo of MoonBeam and run the chain as a "Development chain" but the chain is not producing blocks. Are there any reference links which i can follow to remove dependency ...
BlockBird's user avatar
1 vote
1 answer
87 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 ...
Discardo's user avatar
  • 436
2 votes
2 answers
188 views

Invalid AccountId provided, expected 32 bytes, found 20

I've implemented an evm-based Substrate chain (i.e. it uses the H160 address format), but when I try to open Accounts page on Polkadot explorer, I get this error: Invalid AccountId provided, expected ...
Discardo's user avatar
  • 436
0 votes
2 answers
43 views

Add a logo to Substrate Native Token

I want to add a logo to my native token on Substrate. I've seen it's implemented for multiple Substrate-based chains, but I couldn't find their implementation logics. Like here are the logos for ...
Discardo's user avatar
  • 436
3 votes
1 answer
190 views

Unified accounts with AURA

I want to use unified accounts for a Substrate-based EVM chain. I've looked into the mooonbeam implementation, and they are using it with a custom module pallet-author-inherent which is used for block ...
Discardo's user avatar
  • 436
3 votes
4 answers
656 views

Private key for EVM Frontier

I am running the Frontier-Node-Template and using the library Web3JS to generate EVM transactions following the Moonbeam guide. const Web3 = require('web3'); const web3 = new Web3('ws://127.0.0.1:9944'...
Alex Bean's user avatar
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38 views

Is it possible to pull the transactions that the Moonbeam collators are sending to the Polkadot relay chain?

Currently, working inside the Moonbeam interface and was wondering if it was possible to pull the group of transactions that the Moonbeam collators are sending to the Polkadot Relay Chain before the ...
Jap's user avatar
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0 votes
2 answers
87 views

Is it possible to run moonbeam/Astar as a standalone network

I am exploring moonbeam and astar projects. I would like to know if it is possible to run a standalone network without collators or relaychain. I am interested in running a standalone network of one ...
katapulte's user avatar
  • 161
1 vote
1 answer
46 views

How to solve the error of 'Block invalid'

I'm facing this issue after starting parachain: Note: I have changed the consensus mechanism from aura to nimbus(moonbeam use this). Can anyone please help me to solve this issue ? Thanks in advance !...
Deepak Chaudhary's user avatar
5 votes
0 answers
280 views

XCM Barrier blocked execution: when transferring XC-20 between 2 local Moonbase parachains

The setup is: polkadot-launch 1 relay chain: polkadot-0.9.18 rococo 2 parachains: moonbeam-0.24.0 moonbase-local paraId 1000 paraId 1001 open hrmp channel via polkadot-launch Transferring DOT ...
BackMoonrive's user avatar
2 votes
0 answers
35 views

Integrate nimbus in runtime node

How to integrate nimbus in place of aura authorship in our node runtime ?
Deepak Chaudhary's user avatar
4 votes
0 answers
42 views

Testing Moonbeam parachain staking

I have added Moonbeam parachain staking in our code.Can anyone please provide the full step to test it. I'm following this tutorial: https://docs.moonbeam.network/tokens/staking/stake/#staking-your-...
Vitthal agarwal's user avatar
6 votes
1 answer
262 views

Moonbeam Parachain staking

I have added parachain staking and moonbeam-orbiters of moonbeam in our project. When I test it, all the extrinsics are performing well except the staking part. I have gone through this https://docs....
Deepak Chaudhary's user avatar
0 votes
1 answer
71 views

How can I see what xcm message the moonbeam/river parachain has sent?

I sought to find xcm extrinsics sent from the moonriver/moonbeam parachains but it seems to do things a little differently. Where can I find the sent message or at least the message hash so that I can ...
Squirrel's user avatar
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1 vote
0 answers
45 views

Read Token Contract Information

I would like to read contract information(especially name, symbol, decimal, owner) from token contracts like shown here: https://moonbeam.moonscan.io/token/0x818ec0a7fe18ff94269904fced6ae3dae6d6dc0b#...
user2395's user avatar
1 vote
1 answer
38 views

How do I get started developing dapps on Moonbeam and Moonriver?

What's the best way to get set up and start developing dapps on Moonbeam?
Squirrel's user avatar
  • 3,839
3 votes
0 answers
72 views

What are precompiled in moonbeam and relevant EVM enabled chains? [closed]

What are precompiled in moonbeam and relevant EVM-enabled chains? and why we should use it if we are going to create EVM enabled chain?
Pankaj's user avatar
  • 2,031
5 votes
1 answer
299 views

How to deploy a parachain node and connect it to an existing relay chain node?

I deployed a relay chain node using the provided docker container: docker run \ --detach \ --name=polkadot \ --volume="$(pwd)/data:/data" \ --network=host \ --entrypoint=...
Rtsne42's user avatar
  • 379
1 vote
2 answers
67 views

Why does the moonbeam/moonriver polkadot-js website not have an extrinsics developer menu?

Why does the moonbeam/moonriver polkadot-js websites not have an extrinsics developer menu? The chain state can be queried, and RPC seems there. I'm just curious.
Squirrel's user avatar
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