Abstract: Bob, with a device, is a Notary. Jane wants to upload a record of her location to a blockchain. It cannot independently verify her location if she directly uploads. Bob is considered reputable by the blockchain. He records his location, understood also to be hers, and includes other information about Jane. He uploads. He takes a photo of her. Jane takes a photo of him. They take a photo of both of them. The photos can be in the record. Video of one or both can be in the record. These are entanglements at a higher semantic level than the hash entanglement of the low level blockchain. A Notary can notarise her use of an app at a location. A Notary can be an ATM, taxi, bus, drone. A Notary can be a digital assistant, used by someone who is not the owner, to notarise her location.