Considering that Peter asks periodically for donations, I doubt it's 5 bucks.
What are the running costs for OpenTimestamp nostr:nprofile1qqsve2jcud7fnjzmchn4gq52wx9agey9uhfukv69dy0v4wpuw4w53nqpzemhxue69uhkzarvv9ejumn0wd68ytnvv9hxgqg4waehxw309ajkgetw9ehx7um5wghxcctwvscxst82 ?