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change stake fee calculation #539

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Merged
thewhaleking merged 1 commit into from
Jul 10, 2025
Merged

change stake fee calculation #539

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28 changes: 7 additions & 21 deletions bittensor_cli/src/bittensor/subtensor_interface.py
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@
decode_hex_identity_dict,
validate_chain_endpoint,
u16_normalized_float,
U16_MAX,
)

SubstrateClass = (
Expand Down Expand Up @@ -1526,29 +1527,14 @@ async def get_stake_fee(
5. Moving between coldkeys
"""

origin = None
if origin_hotkey_ss58 is not None and origin_netuid is not None:
origin = (origin_hotkey_ss58, origin_netuid)
if origin_netuid is None:
origin_netuid = 0

destination = None
if destination_hotkey_ss58 is not None and destination_netuid is not None:
destination = (destination_hotkey_ss58, destination_netuid)
fee_rate = await self.query("Swap", "FeeRate", [origin_netuid])
fee = amount * (fee_rate / U16_MAX)

result_ = await self.query_runtime_api(
runtime_api="StakeInfoRuntimeApi",
method="get_stake_fee",
params=[
origin,
origin_coldkey_ss58,
destination,
destination_coldkey_ss58,
amount,
],
block_hash=block_hash,
)
result = Balance.from_rao(result_)
if isinstance(origin_netuid, int):
result.set_unit(origin_netuid)
result = Balance.from_tao(fee)
result.set_unit(origin_netuid)

return result

Expand Down
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