How to bulk mint?

Bulk mint feature only works on launchpad collection and with a segwit address.

Go on https://stamped.ninja, and the launchpad collection you want.

For the example, we're going to use the Prunestones launchpad.

Click on MINT A RANDOM STAMP, a window opens.

Source: If you use a legacy address, you only can mint 1 by 1. If you use segwit you can bulk mint till 20 max.

Bulk: put the number of mint you want.

Select your fee, click on ESTIMATE to see estimation then MINT.

Wait till the transaction is confirmed on https://mempool.space to receive it on your wallet's balance.