Sirrus Corp. announced that the company is establishing itself as a Blockchain Notary Service Provider on the Ethereum network. The “document” can be pretty much anything in digital format, from a conventional government document to a full-resolution movie or location-stamped image. For a small fee, the document is processed to create a unique cryptographic SHA256 hash imprint. The imprint is then permanently and publicly linked into the blockchain with a unique address and timestamp. This link in the blockchain, and therefore the document’s authenticity, can be certified by anyone comparing the transaction in a blockchain explorer. The document’s contents always remain private and are not stored in the blockchain or ever exposed.