| 摘要 |
A“third-party watermark”is inserted into a file or files uploaded by a client to a“storing party”such as a file backup server. The third-party watermark may contain information about the upload itself, such as time and date of the upload and the identity of the client. The third-party watermark may also contain authentication information received from the client or elsewhere that establishes that the client is in proper possession of the file, e.g., it is not a“bootlegged”copy.
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