Sub 1 sat/vB Mode Setup Guide
1. What is Sub 1 sat/vB Mode ?
This means that when submitting a mint order, you choose a network fee rate lower than 1 sat/vBMost network nodes enforce a default relay policy requiring ≥1 sat/vB. But Sub 1 sat/vB transactions is more common now that network fee is generally low.
✨ Advantage of Sub 1 sat/vB Mode:
Save transaction fees, suitable for non-urgent or large batch minting.
⚠️ Risk of Sub 1 sat/vB Mode:
Most pools do not mine sub 1 sat/vB transactions. Confirmation is not guaranteed may take a long time (from several hours to several days) or never get processed.
‼️ Check Current Network Fee Rate
Before setting sub 1 sat/vB fee rate, we recommend checking the current Bitcoin network congestion. A fee rate of 1 sat/vB or lower means it may result in longer confirmation times.
You may use mempool.space to view the fee rate and estimated confirmation time in real time.
Currently, UniSat Inscribe service has supported sub 1 sat/vB mode, allowing users to set fee rates below 1 sat/vB to reduce inscribing costs.Enable sub 1 sat/vB mode
In the fee selection area, turn on the sub 1 sat/vB mode switch in the top-right corner.
Acknowledge Risk Warning
The system will display a risk alert when enabling sub 1 sat/vB fee mode. Please read the on-page warning carefully and tick the risk alert box only after confirming that you fully understand the risks.
Set Custom Fee Rate
Drag the slider or manually enter your target fee rate, e.g.,
0.2 sat/vB.
Submit the Order
Click Submit to complete the process.
Please note:
Under Sub 1 sat/vB Mode, you are only adjusting the fee rate for minting transaction, not for the payment transaction.
Please do not manually change the fee rate for payment to ensure quick order submission
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