He said that the tariff is $1 per barrel of oil, adding that empty tankers can pass freely. “Once the email arrives and Iran completes its assessment, vessels are given a few seconds to pay in Bitcoin, ensuring they can’t be traced or confiscated due to sanctions,” Hosseini added.



That’s not true. Customary international law also applies to states, that are not themselves members of a treaty. In the case of international maritime war and international humanitarian laws this is widely accepted as such.
Maybe that used to be the case but the USA does it different