62 lines
3.4 KiB
Python
62 lines
3.4 KiB
Python
from __future__ import annotations
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from chia.util.ints import uint64
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from .constants import ConsensusConstants
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default_kwargs = {
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"SLOT_BLOCKS_TARGET": 32,
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"MIN_BLOCKS_PER_CHALLENGE_BLOCK": 16, # Must be less than half of SLOT_BLOCKS_TARGET
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"MAX_SUB_SLOT_BLOCKS": 128, # Must be less than half of SUB_EPOCH_BLOCKS
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"NUM_SPS_SUB_SLOT": 64, # Must be a power of 2
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"SUB_SLOT_ITERS_STARTING": 2**27,
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# DIFFICULTY_STARTING is the starting difficulty for the first epoch, which is then further
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# multiplied by another factor of DIFFICULTY_CONSTANT_FACTOR, to be used in the VDF iter calculation formula.
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"DIFFICULTY_CONSTANT_FACTOR": 2**67,
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"DIFFICULTY_STARTING": 7,
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"DIFFICULTY_CHANGE_MAX_FACTOR": 3, # The next difficulty is truncated to range [prev / FACTOR, prev * FACTOR]
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# These 3 constants must be changed at the same time
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"SUB_EPOCH_BLOCKS": 384, # The number of blocks per sub-epoch, mainnet 384
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"EPOCH_BLOCKS": 4608, # The number of blocks per epoch, mainnet 4608. Must be multiple of SUB_EPOCH_SB
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"SIGNIFICANT_BITS": 8, # The number of bits to look at in difficulty and min iters. The rest are zeroed
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"DISCRIMINANT_SIZE_BITS": 1024, # Max is 1024 (based on ClassGroupElement int size)
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"NUMBER_ZERO_BITS_PLOT_FILTER": 9, # H(plot signature of the challenge) must start with these many zeroes
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"MIN_PLOT_SIZE": 32, # 32 for mainnet
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"MAX_PLOT_SIZE": 50,
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"SUB_SLOT_TIME_TARGET": 600, # The target number of seconds per slot, mainnet 600
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"NUM_SP_INTERVALS_EXTRA": 3, # The number of sp intervals to add to the signage point
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"MAX_FUTURE_TIME": 5 * 60, # The next block can have a timestamp of at most these many seconds in the future
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"NUMBER_OF_TIMESTAMPS": 11, # Than the average of the last NUMBER_OF_TIMESTAMPS blocks
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# Used as the initial cc rc challenges, as well as first block back pointers, and first SES back pointer
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# We override this value based on the chain being run (testnet0, testnet1, mainnet, etc)
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# Default used for tests is std_hash(b'')
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"GENESIS_CHALLENGE": bytes.fromhex("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"),
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# Forks of chia should change this value to provide replay attack protection. This is set to mainnet genesis chall
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"AGG_SIG_ME_ADDITIONAL_DATA": bytes.fromhex("ccd5bb71183532bff220ba46c268991a3ff07eb358e8255a65c30a2dce0e5fbb"),
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"GENESIS_PRE_FARM_POOL_PUZZLE_HASH": bytes.fromhex(
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"d23da14695a188ae5708dd152263c4db883eb27edeb936178d4d988b8f3ce5fc"
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),
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"GENESIS_PRE_FARM_FARMER_PUZZLE_HASH": bytes.fromhex(
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"3d8765d3a597ec1d99663f6c9816d915b9f68613ac94009884c4addaefcce6af"
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),
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"MAX_VDF_WITNESS_SIZE": 64,
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# Size of mempool = 50x the size of block
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"MEMPOOL_BLOCK_BUFFER": 50,
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# Max coin amount, fits into 64 bits
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"MAX_COIN_AMOUNT": uint64((1 << 64) - 1),
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# Max block cost in clvm cost units
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"MAX_BLOCK_COST_CLVM": 11000000000,
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# The cost per byte of generator program
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"COST_PER_BYTE": 12000,
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"WEIGHT_PROOF_THRESHOLD": 2,
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"BLOCKS_CACHE_SIZE": 4608 + (128 * 4),
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"WEIGHT_PROOF_RECENT_BLOCKS": 1000,
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"MAX_BLOCK_COUNT_PER_REQUESTS": 32, # Allow up to 32 blocks per request
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"MAX_GENERATOR_SIZE": 1000000,
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"MAX_GENERATOR_REF_LIST_SIZE": 512, # Number of references allowed in the block generator ref list
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"POOL_SUB_SLOT_ITERS": 37600000000, # iters limit * NUM_SPS
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}
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DEFAULT_CONSTANTS = ConsensusConstants(**default_kwargs) # type: ignore
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