Nothing but ignorance is the mother of this misopinion.

Proof of burn is used to destroy (burn) coins. To burn bitcoins means to send those bitcoins to a verifiable yet nonspendable address.

Many powerful pain killers are prescription drugs in the U.S.

And twixt them both a quadrate was the base, Proportiond equally by seven and nine; Nine was the circle sett in heavens place: All which compacted made a goodly Diapase