Example — 50,000 SAT Transaction and SUBTC Fee

SUBTC uses satoshis (SAT) as the atomic unit for all calculations.
Fees are deterministic and calculated using a fixed 3% service fee.

Example transaction:

Requested amount:
50,000 SAT

Service fee (3%):
1,500 SAT

Actual amount sent to destination:
48,500 SAT

Value reference (example market price):

50,000 SAT ≈ 0.0005 BTC ≈ 36.36 USD

Service fee value:

1,500 SAT ≈ 0.000015 BTC ≈ 1.09 USD

Calculation model:

requested_sat = 50000
fee_sat = requested_sat × 0.03
sent_sat = requested_sat − fee_sat

Result:

requested_sat = 50000
service_fee_sat = 1500
sent_sat = 48500

SUBTC always performs these calculations using **integer satoshis only** to avoid floating-point errors and ensure deterministic results.

API Base:
https://subtc.net/api