Abstract: A mobile device scans a machine-readable code on a collection container; a Web page is downloaded to the device from a Web application which generates or retrieves a unique identifier for the device. The device then scans a can and the can's unique identifier is transmitted to the Web application to determine if the can had been scanned. If not, the device is alerted and a credit for the device's unique identifier is updated in a database. Or, the device scans a card to obtain a user unique identifier and then scans the can. The device scans a machine-readable code of the collection container to obtain a unique identifier for that collection container. Or, a user scans the card using an embedded scanning device of a collection container before scanning a can. The embedded device includes the unique identifier of the collection container which is sent to the Web application.

Abstract: A unique bag identifier is generated for digital objects to be stored in object storage. A unique download identifier is generated for downloading of these objects and a unique upload identifier is generated for uploading of the objects; all three identifiers are associated in a database. The identifiers are distributed verbally, by electronic mail, by text message, etc. Any holder of these identifiers may access the digital objects without a user account and without installing an application on a computing device other than using a browser. A QR code or alphanumeric code is displayed on a computing device in order to allow another device to access the objects. Objects may be uploaded via electronic mail. Uploading or downloading is protected by an owner-generated password. Digital objects are sealed by calculating their hashes, placing these hashes in a file and calculating a hash for that file. This file hash is submitted to a block chain and a transaction identifier is returned.

Abstract: A unique bag identifier is generated for digital objects to be stored in object storage. A unique download identifier is generated for downloading of these objects and a unique upload identifier is generated for uploading of the objects; all three identifiers are associated in a database. The identifiers are distributed verbally, by electronic mail, by text message, etc. Any holder of these identifiers may access the digital objects without a user account and without installing an application on a computing device other than using a browser. A QR code or alphanumeric code is displayed on a computing device in order to allow another device to access the objects. Objects may be uploaded via electronic mail. Uploading or downloading is protected by an owner-generated password. Digital objects are sealed by calculating their hashes, placing these hashes in a file and calculating a hash for that file. This file hash is submitted to a block chain and a transaction identifier is returned.