Moonbeam: an Ethereum-compatible Smart Contract Parachain on Polkadot

Run an alphanet node with Docker

Docker images are published for every tagged release. Learn more with moonbeam --help.

# Join the public testnet
docker run --network="host" purestake/moonbeam:v0.19.1 --chain alphanet

You can find more detailed instructions to run a full node in our TestNet

Run a local development node with Docker

Developers who are building dApps to run on moonbeam, may want a lightweight node to work with locally. You can quickly spin up a single node with no relay chain backing it using the development service.

# Run a dev service node
docker run --network="host" purestake/moonbeam:v0.19.1 --dev

For more information, see our detailed instructions to run a development node

Sealing options

The command above will start the node in instant seal mode. It creates a block when a transaction arrives, similar to Ganache's auto-mine. You can also choose to author blocks at a regular interval, or control authoring manually through the RPC.

# Author a block every 6 seconds.
docker run --network="host" purestake/moonbeam:v0.19.1 --dev --sealing 6000

# Manually control the block authorship and finality
docker run --network="host" purestake/moonbeam:v0.19.1 --dev --sealing manual

Prefunded Development Addresses

Running Moonbeam in development mode will pre-fund several well-known addresses that (mostly) contain the letters "th" in their names to remind you that they are for ethereum-compatible usage. These addresses are derived from Substrate's canonical mnemonic: bottom drive obey lake curtain smoke basket hold race lonely fit walk

# Alith:
- Address: 0xf24FF3a9CF04c71Dbc94D0b566f7A27B94566cac
- PrivKey: 0x5fb92d6e98884f76de468fa3f6278f8807c48bebc13595d45af5bdc4da702133

# Baltathar:
- Address: 0x3Cd0A705a2DC65e5b1E1205896BaA2be8A07c6e0
- PrivKey: 0x8075991ce870b93a8870eca0c0f91913d12f47948ca0fd25b49c6fa7cdbeee8b

# Charleth:
- Address: 0x798d4Ba9baf0064Ec19eB4F0a1a45785ae9D6DFc
- PrivKey: 0x0b6e18cafb6ed99687ec547bd28139cafdd2bffe70e6b688025de6b445aa5c5b

# Dorothy:
- Address: 0x773539d4Ac0e786233D90A233654ccEE26a613D9
- PrivKey: 0x39539ab1876910bbf3a223d84a29e28f1cb4e2e456503e7e91ed39b2e7223d68

# Ethan:
- Address: 0xFf64d3F6efE2317EE2807d223a0Bdc4c0c49dfDB
- PrivKey: 0x7dce9bc8babb68fec1409be38c8e1a52650206a7ed90ff956ae8a6d15eeaaef4

# Faith:
- Address: 0xC0F0f4ab324C46e55D02D0033343B4Be8A55532d
- PrivKey: 0xb9d2ea9a615f3165812e8d44de0d24da9bbd164b65c4f0573e1ce2c8dbd9c8df

# Goliath:
- Address: 0x7BF369283338E12C90514468aa3868A551AB2929
- PrivKey: 0x96b8a38e12e1a31dee1eab2fffdf9d9990045f5b37e44d8cc27766ef294acf18

# Heath:
- Address: 0x931f3600a299fd9B24cEfB3BfF79388D19804BeA
- PrivKey: 0x0d6dcaaef49272a5411896be8ad16c01c35d6f8c18873387b71fbc734759b0ab

# Ida:
- Address: 0xC41C5F1123ECCd5ce233578B2e7ebd5693869d73
- PrivKey: 0x4c42532034540267bf568198ccec4cb822a025da542861fcb146a5fab6433ff8

# Judith:
- Address: 0x2898FE7a42Be376C8BC7AF536A940F7Fd5aDd423
- PrivKey: 0x94c49300a58d576011096bcb006aa06f5a91b34b4383891e8029c21dc39fbb8b

Also, the prefunded default account for testing purposes is:

# Gerald:
- Address: 0x6Be02d1d3665660d22FF9624b7BE0551ee1Ac91b
- PrivKey: 0x99b3c12287537e38c90a9219d4cb074a89a16e9cdb20bf85728ebd97c343e342

Build the Moonbeam Node

To build Moonbeam, you will need a proper Substrate development environment. If you've never worked with a Substrate-based blockchain before, you should probably try the Setting Up a Moonbeam Node docs first.

If you need a refresher setting up your Substrate environment, see Substrate's Getting Started Guide.

Note that cloning master might result in an unstable build. If you want a stable version, check out the latest releases.

# Fetch the code
git clone https://github.com/PureStake/moonbeam
cd moonbeam

# Build the node (The first build will be long (~30min))
cargo build --release

Run tests

Moonbeam has Rust unit tests as well as typescript integration tests. These tests are run in CI, and can also be run locally.

# Run the Rust unit tests
cargo test
# Install dependencies for integration tests
cd moonbeam-types-bundle
npm i

cd ../tests
npm i

# Run integration tests
npm test

Chain IDs

The Ethereum specification described a numeric Chain Id. The Moonbeam mainnet Chain Id will be 1284 because it takes 1284 milliseconds for a moonbeam to reach Earth.

Moonbeam nodes support multiple public chains and testnets, with the following Chain Ids.

Network DescriptionChain ID
Local Parachain TestNet1280
Local Development TestNet1281
Reserved for other TestNets1282 - 1283
Moonbeam (Polkadot)1284
Moonriver (Kusama)1285
Moonrock (Rococo)1286
Moonbase Alpha TestNet1287
Reserved for other public networks1288 - 1289

Runtime Architecture

The Moonbeam Runtime is built using FRAME and consists of pallets from substrate, frontier, cumulus, and pallets/.

From substrate:

  • Utility: Allows users to use derivative accounts, and batch calls
  • Balances: Tracks GLMR token balances
  • Sudo: Allows a privileged account to make arbitrary runtime changes - will be removed before launch
  • Timestamp: On-Chain notion of time
  • Transaction Payment: Transaction payment (fee) management
  • Randomness Collective Flip: A (mock) onchain randomness beacon. Will be replaced by parachain randomness by mainnet.

From frontier:

  • EVM: Encapsulates execution logic for an Ethereum Virtual Machine
  • Ethereum: Ethereum-style data encoding and access for the EVM.

From cumulus:

  • ParachainUpgrade: A helper to perform runtime upgrades on parachains
  • ParachainInfo: A place to store parachain-relevant constants like parachain id

The following pallets are stored in pallets/. They are designed for Moonbeam's specific requirements:

  • Ethereum Chain Id: A place to store the chain id for each Moonbeam network
  • Author Inherent: Allows block authors to include their identity in a block via an inherent
  • Parachain Staking: Minimal staking pallet that selects collators by total amount at stake

Download Details:
Author: PureStake
Source Code: https://github.com/PureStake/moonbeam
License: GPL-3.0 License

#rust  #blockchain  #substrate #Parachain #ethereum #polkadot 

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