S
The above also works on the PeerTube-Database. Just replace
IF NEW."registrationReason" = 'Automated protocol deliverability probe' THEN
and
BEFORE INSERT ON "userRegistration"
#MastoAdmin #PeerTube #BoomProtocolProbe #AutomatedProtocolDeliverabilityProbe
Three hours without new bot registrations 
The spam accounts from the last few hours ("Automated protocol deliverability probe") appear to be logging in via their own OAuth app called “BoomProtocolProbe.” So here's an attempt:
To prevent “BoomProtocolProbe” from registering, we created a trigger in the Mastodon database that checks the name BEFORE INSERT and blocks the app if it matches.