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You could take a picture of a picture or a recording of a recording and now it is validated.
by cma 4y ago
You could take a picture of a picture or a recording of a recording and now it is validated.
- blondie9x 4y agoHow would that relate to the hashing explained here?
- theLiminator 4y agoI imagine the guy above is thinking any device can produce a hashed video, but I think we'll need the notion of cryptographically secure cameras or something with write once memory that has to be swapped out once in a while. The alternative being cameras that upload the hash of every clip into a server to provide non repudiation.
- Raidion 4y agoBut it wouldn't be validated with the original key, so people could know it could have been tampered with.
- svachalek 4y agoIf the key is just the recording device, why not? Play a fake on some other device and record with your own.
- anonymouskimmer 4y agoDatestamps are part of the keyed metadata.
- ironmagma 4y agoMy camera has no clue what date it is beyond what I tell it the date is.
- anonymouskimmer 4y agoWhich makes video evidence from your camera more suspect than video evidence from a cellphone (which, sure, could be fake-dated as well).
- ironmagma 4y agoWhich further reinforces the fact that there is a tremendous amount of real evidence that will be thrown out.
- alasdair_ 4y agoThe idea is that the blockchain tracks the date the video was entered onto the blockchain verifiably. Note that this isn't the same as the date the images were taken, but it confirms that the recording is at least X days old.
- splendidHaiku 4y agoBut then the metadata, e.g. gps coords, time of the recording, etc. of the recorded video will not match with what is displayed. So it would be an obvious fake.
- cma 4y agoGPS can be spoofed by replay