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Requirement

Hardware Requirements

System: Ubuntu 20.04
  • CPU - 4 core (3.2GHZ above)
  • Memory - 16GB
  • Storage - 200GB SSD
  • Bandwidth - 10 Mbps above
Tip: CPU frequency lower than 3.2GHZ may affect the normal block generation of collator. Storage recommends using an SSD that supports the NVMe protocol.

Operating System

Ubuntu 20.04 LTS

Operating Procedures

Kusama Mainnet
Stagenet
  • Delegator
    1. 1.
      Create a BNC Address
    2. 2.
      Receive faucet test BNC: https://t.me/bifrost_faucet
    3. 3.
      Enter Bifrost Dapp (switch to Bifrost Stage Network) and delegate a Collator
  • Collator:
    1. 1.
      Create a BNC Address
    2. 2.
      Receive faucet test BNC: https://t.me/bifrost_faucet
    3. 3.
      Run Collator Node & Map SessionKey in the Bifrost pre-production environment (wss://bifrost-rpc.testnet.liebi.com/ws): Guidance
    4. 4.
      Check your Collator at Bifrost Dapp (switch to Bifrost Stage Network)/ Telemetry
    5. 5.
      Get Delegating
    6. 6.
      Successfully generate blocks and enter the active Collator set to get Commission rewards

Operation Cycle

The Collator system has its own running cycle, 600 blocks in a round, each round takes about 2 hours, and the cycle is related to the operations of reward settlement, addition, and unbonding.
Kusama Mainnet
Stagenet
Variable
Parameter
Leave Candidate Pool
84 rounds (168 hours)
Remove Nominations
84 rounds (168 hours)
Reward distribution (after the current round)
2 rounds (4 hour)
Variable
Parameter
Leave Candidate Pool
24 rounds (12 hours)
Remove Nominations
24 rounds (12 hours)
Reward distribution (after the current round)
2 rounds (1 hour)

Basic Parameters

Glossary

  • Collator: Collator runs a full node on Bifrost parachain and Kusama relay-chain, and produce the state transition proof for relay chain validators.
  • Active set: A set of Collators who can receive commission by producing blocks, choosen by the ranking of delegating amount.
  • Candidates: Collators who out of Active set.
  • Collator self bond: Self-bond as a minimum BNC to be a Collator, continue self-bond same as delegating.
  • Delegator: Bifrost token holders who stake tokens, vouching for specific collator candidates on the parachain.
  • Delegate: Bond BNC Token for Bifrost Collators, receiving delegating rewards depends on the rank of Collator and delegating amount.

Collator

  • Maximum number of active Collators and candidates
Kusama Mainnet
Stagenet
Collator
Stage 0
Stage 1
Stage 2
Candidate
Unlimited
Unlimited
Unlimited
Active Collator
16
32
64
Collator
Stage 0
Stage 1
Stage 2
Candidate
Unlimited
Unlimited
Unlimited
Active Collator
16
32
64
  • Bonding parameters (Collator)
Kusama Mainnet
Stagenet
BNC Staking Conditions
Quantity
Candidate minimum bond (self bond)
5,000 BNC
Collator maximum bond (self bond)
Unlimited
Minimum Total Delegating Amount for Active Collator (Delegating)
5,000 BNC
BNC Staking Conditions
Quantity
Candidate minimum bond (self bond)
100 BNC
Collator maximum bond (self bond)
Unlimited
Minimum Total Delegating Amount for Active Collator (Delegating)
100 BNC
  • Others
Kusama Mainnet
Stagenet
Variable
Parameter
Collator exit
84 rounds
Maximum number of delegators
Unlimited
Add self bond
Effective immediately
Reduce self bond
84 rounds
Reward distribution
Collectors receive rewards for the first 2 rounds at the end of each round (600 blocks)
Punishment
No Penalty, reward deduction if there is missing for effective block producing.
Variable
Parameter
Collator exit
Exit every 24 rounds
Maximum number of delegators
Unlimited
Add self bond
Effective immediately
Reduce self bond
24 rounds
Reward distribution
Collectors receive rewards for the first 2 rounds at the end of each round (150 blocks)
Punishment
No Penalty

Delegator

  • Bonding parameters (Delegator)
Kusama Mainnet
Stagenet
Delegating Conditions
Quantity
Minimum Delegating Amount
50 BNC
Maximum Delegating Quantity
Unlimited
Delegating Conditions
Quantity
Minimum Delegating Amount
5 BNC
Maximum Delegating Quantity
Unlimited
  • Others
Kusama Mainnet
Stagenet
Variable
Parameter
Minimum delegating value that can be rewarded
The top 300 Delegators of each Collator can get the reward, more than 300 Delegators do not count the reward.
Maximum number to delegate Collators
350
Add Delegating
Effective immediately
Reduce Delegating
84 rounds
Revoke Delegating
84 rounds, no minimum revoke limit ((staking rewards continue to be received during unbonding period)
Reward automatic re-delegating
Not available yet
Variable
Parameter
Minimum delegating value that can be rewarded
The top 100 Delegators of each Collator can get the reward, more than 100 Delegators do not count the reward.
Maximum number to delegate Collators
100
Add Delegating
Effective immediately
Reduce Delegating
24 rounds
Revoke Delegating
24 rounds, no minimum revoke limit (no reward during the revoking period)
Reward automatic re-delegating
Not available yet

Collator incentive ratio

Kusama Mainnet
Stagenet
Total 800,000 BNC/Year
Proportion
Collator Commission
10%
Delegator
90%
Total 800,000 test BNC/Year
Proportion
Collator Commission
40%
Delegator
60%

Reward Calculation

Kusama Mainnet
Bifrost network reserved 5% (4,000,000 BNC) of total issurance to incentivize Collator mechanism for 5 years (800,000 BNC/year), with no inflation. The reward for each Round is a fixed 180 BNC. The reward calculation method is as follows.
According to the incentive ratio, the reward for each block is:
Collator: 180/600*10% = 0.03 BNC
Delegator: 180/600*90% = 0.27 BNC
If a collector's total delegating amount is 100,000 BNC and it is in the 64 Active Collator set for the whole year, the average revenue of the Collator is:
Collating Reward: 800,000 x 10% / 64 = 1,250 BNC
Self-bond delegating Reward: 800,000 x 90% / 64 x 5,000/100,000 = 562.5 BNC
Total Revenue: 1,250 + 562.5 = 1,812.5 BNC
APR: 1,812.5/5,000 = 36.25%