top of page


BerryStake Lab


What is Moonbeam

Moonbeam is an Ethereum-compatible smart contract parachain on Polkadot. Moonbeam makes it easy to use popular Ethereum developer tools to build or redeploy Solidity projects in a Substrate-based environment.

Moonbeam is much more than just an EVM implementation: it’s a highly specialized parachain that mirrors Ethereum’s Web3 RPC, accounts, keys, subscriptions, logs, and more. The Moonbeam platform extends the base Ethereum feature set with additional features such as on-chain governance, staking, and cross-chain integrations.

Moonbeam’s Ethereum compatibility is unmatched:

  • Minimal Changes: developers can use existing Solidity smart contracts right away, with no need to rewrite or reconfigure

  • Use Existing Developer Tools: connect popular tools like MetaMask, Hardhat, Waffle, Remix, and Truffle via a complete set of Web3 RPC endpoints. Use well-known Javascript libraries such as Web3.Js or Ethers.Js.

  • Unified Accounts, Addresses, and Signatures: use your existing Ethereum H160 accounts & ECDSA signatures to interact with Moonbeam

  • Tap into the Most Integrations on Polkadot: use existing oracles, bridges, wallets, and other tools that are already building on Moonbeam

Moonbeam provides integration and connectivity between Polkadot Parachains as well as with other chains such as Ethereum and Bitcoin via bridges. Moonbeam was started in 2019 by Derek Yoo of Pure Stake.

GLMR Staking Rewards 

Collator & Delegator

1. Staking Rewards
Collators are rewarded at the end of every round for their work from 2 rounds ago.

The distribution of the 5% annual inflation goes as follows:

  • 1% goes to incentivizing collators (for collators)

  • 1.5% goes to the parachain bond reserve

  • The remaining 2.5% will go to users that stake their tokens ( for delegators)

Out of that 2.5%, collators gets the rewards corresponding to their stake in the network.The rest are distributed among nominators by stake.

2. Useful Information

  • Minimum nomination amount — 50 GLMR

  • Round duration — 1800 blocks, time per round is approximately 6 hour

  • Max eligible nominators per collator — for a given round, only the top 300 nominators by staked amount are eligible for staking rewards

  • Add or increase delegation — nomination takes effect in the next round (funds are withdrawn immediately)

  • Decrease delegation delay — 28 rounds (168 hours)

  • Revoke delegations delay — 28 rounds (168 hours)

  • Leave delegators delay — 28 rounds (168 hours)

  • Reward payout time — 2 rounds. Rewards are distributed automatically to the free balance

  • Collator commission — fixed at 20% of the annual inflation (5%). Not related to the nominators reward pool

  • Nominators reward pool — 50% of the annual inflation

3. Calculating Rewards

Mathematically speaking, for collators, the reward distribution per block proposed and finalized would look like this:

                             reward = (0.2 x amount_due) + (0.5 x amount_due x stake)


Where amount_due is the corresponding inflation being distributed in a specific block, the stake corresponds to the number of tokens bonded by the collator in respect to the total stake of that collator (accounting delegations).

For each delegator, the reward distribution (per block proposed and finalized by the delegated collator) would look like this:

                                            reward = (0.5x amount_due x stake)


Where amount_due is the corresponding inflation being distributed in a specific block, the stake corresponds to the amount of tokens bonded by each delegator in respect to the total stake of that collator.

bottom of page