Beam Consensus Rules

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WARNING: Used for development and testing only!
The following parameters allow to configuration of Consensus Rules in the Beam node and wallet.
Consensus Rules are for testing and development purposes only. Changing the consensus parameters changes the Rule Signature and breaks the node and wallet compatibility with the running Mainnet or Testnet servers.
Rules
Parameter
Description & Example
EmissionValue0
Initial coinbase emission in a single block (in Groth, 10^-8 of Beam)
EmissionDrop0
Height of the last block that still has the initial emission. Emission drops by half in the next block. Default equals one year (assuming one block per minute).
EmissionDrop1
Number of blocks in halving cycle (defaults to four years, assuming one block per minute).
MaturityCoinbase
Number of blocks that should be mined (verified) before coinbase UTXO can be spent.
MaturityStd
Number of blocks that should be mined (verified) before normal (non-coinbase) UTXO can be spent.
MaxBodySize
Block body size (in bytes).
DesiredRate_s
Target block rate (in seconds).
DifficultyReviewWindow
Number of blocks in the window for the mining difficulty adjustment.
TimestampAheadThreshold_s
Block timestamp tolerance (in seconds).
WindowForMedian
Number of blocks considered in calculating the timestamp median.
AllowPublicUtxos
Flag allowing regular (non-coinbase) UTXO to have non-confidential signature.
FakePoW
Flag to disable verification of PoW. Mining is simulated by timer.
The sample below displays the corresponding .cfg fie section:
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################################################################################
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# Rules configuration:
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################################################################################
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​
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# initial coinbase emission in a single block
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# EmissionValue0=800000000
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​
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# height of the last block that still has the initial emission, the drop is starting from the next block
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# EmissionDrop0=525600
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​
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# Each such a cycle there's a new drop
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# EmissionDrop1=2102400
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​
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# num of blocks before coinbase UTXO can be spent
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# MaturityCoinbase=240
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​
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# num of blocks before non-coinbase UTXO can be spent
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# MaturityStd=0
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​
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# Max block body size [bytes]
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# MaxBodySize=0x100000
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​
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# Desired rate of generated blocks [seconds]
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# DesiredRate_s=60
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​
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# num of blocks in the window for the mining difficulty adjustment
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# DifficultyReviewWindow=1440
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​
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# Block timestamp tolerance [seconds]
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# TimestampAheadThreshold_s=7200
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​
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# How many blocks are considered in calculating the timestamp median
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# WindowForMedian=25
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​
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# set to allow regular (non-coinbase) UTXO to have non-confidential signature
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# AllowPublicUtxos=0
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​
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# Don't verify PoW. Mining is simulated by the timer
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# FakePoW=0
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