Safety Margin and Broadcast Reliability

WAproxy requires a safety margin to ensure reliable transaction broadcast under dynamic network conditions.

Execution condition:

wallet_balance >= amount_sat + safety_margin

The safety margin is not part of amount_sat.
It protects against fluctuating network fees.

Protocol fee:
- deducted from amount_sat

Network fee:
- deducted from wallet balance

Safety margin:
- protects execution reliability

Example:

amount_sat = 15000
recommended_margin = 500

Required wallet balance:
15500

If wallet_balance = 15000
Execution must not proceed.

Network fees vary based on mempool state and miner policy.
WAproxy does not predict network fees.
It enforces minimum economic safety boundaries.

Applications may increase margin dynamically.
WAproxy only validates deterministic execution conditions.

Sending full wallet balance without margin
risks broadcast rejection.

Safety margin ensures:
- stable retries
- predictable execution
- no partial drain attempts
- deterministic behavior

WAproxy prioritizes execution stability over aggressive balance usage.