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# Bitflash mining calculator
`scripts/bitflash-mining-calculator.py` is a local WhatToMine-style calculator
for Bitflash.
It does not fetch market prices, does not talk to exchanges, and does not
change consensus. Price is a manual input until Bitflash has a reliable public
market.
## Examples
Estimate from network hashrate:
```bash
python3 scripts/bitflash-mining-calculator.py \
--hashrate 21 --hashrate-unit kh/s \
--network-hashrate 1.56 --network-hashrate-unit mh/s \
--watts 140 --kwh-cost 0.10 \
--price 0.001 --pool-fee 1
```
Estimate from Bitflash difficulty:
```bash
python3 scripts/bitflash-mining-calculator.py \
--hashrate 21 --hashrate-unit kh/s \
--difficulty 45600 \
--watts 140 --kwh-cost 0.10
```
Machine-readable output:
```bash
python3 scripts/bitflash-mining-calculator.py \
--hashrate 21 --hashrate-unit kh/s \
--network-hashrate 1.56 --network-hashrate-unit mh/s \
--json
```
## Bitflash Difficulty Scale
Bitflash does not use Bitcoin's SHA256 difficulty-1 constant for pool shares.
The chain's easiest RandomX target is `bnProofOfWorkLimit = ~uint256(0) >> 12`,
so difficulty 1 expects about `4096` hashes.
The calculator uses:
```text
network_hashrate = difficulty * 4096 / block_time_seconds
```
At the default two-minute block target:
```text
network_hashrate = difficulty * 4096 / 120
```
If you already know network hashrate, pass `--network-hashrate` directly and
the script derives the equivalent Bitflash difficulty for display.
## Reward Estimate
The expected daily reward is:
```text
blocks_per_day = 86400 / block_time_seconds
miner_share = miner_hashrate / network_hashrate
gross_btf_per_day = blocks_per_day * block_reward * miner_share
net_btf_per_day = gross_btf_per_day * (1 - pool_fee_percent / 100)
```
Electricity is:
```text
electricity_per_day = watts / 1000 * 24 * kwh_cost
```
This is an expectation, not a promise. Solo mining variance can be very large,
especially when the miner has a small share of the network.
## Future Website Use
The script is intentionally standalone so the same math can later back a
website widget or status dashboard. Until a public price exists, a website
calculator should keep price as a manual field and label fiat profit as
speculative.
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