Abstract: Described herein is a system and method for an append-only block-oriented object storage system. An unstructured storage object is stored in cloud storage. A block is data is received, from a client, to append to the unstructured storage object. A universally unique identifier of the client, and client contextual information regarding the block of data, are received from the client. The client contextual information comprises an identifier of a most recently appended block from the client. When the identifier of the most recently appended block from the client matches a stored identifier associated with the universally unique identifier of the client, the block of data is appended to the unstructured storage object, and the stored identifier associated with the universally unique identifier of the client is updated in accordance with the received client contextual information.

Abstract: Described herein is a system and method for an append-only block-oriented object storage system. An unstructured storage object is stored in cloud storage. A block is data is received, from a client, to append to the unstructured storage object. A universally unique identifier of the client, and client contextual information regarding the block of data, are received from the client. The client contextual information comprises an identifier of a most recently appended block from the client. When the identifier of the most recently appended block from the client matches a stored identifier associated with the universally unique identifier of the client, the block of data is appended to the unstructured storage object, and the stored identifier associated with the universally unique identifier of the client is updated in accordance with the received client contextual information.

Abstract: Described herein is a system and method for a user accessible log of object storage change-events system. A change is detected within a cloud storage based on an unstructured storage object stored in the cloud storage. Contextual attributes of the change are identified from an updated state of the log file that stores information about the unstructured storage object. An output is provided based, at least in part, upon the detected change and at least some of the contextual attributes, wherein the output is an immutable, read-only log of change events.

Abstract: Described herein is a system and method for a user accessible log of object storage change-events system. A change is detected within a cloud storage based on an unstructured storage object stored in the cloud storage. Contextual attributes of the change are identified from an updated state of the log file that stores information about the unstructured storage object. An output is provided based, at least in part, upon the detected change and at least some of the contextual attributes, wherein the output is an immutable, read-only log of change events.