Safecast data is published under a CC0 designation
This is a public domain designation and means the data is free and open for anyone to use under any circumstance. We have done this to enable to most flexibility in it’s use by others. While you are not legally required to attribute the data back to us, it’s a nice thing to do – collecting the data was a lot of hard work. (Joi Ito has written more about this here.) To learn more about the other licenses we use please go here.