With 1000 dollars each, it seems that bribing with bitcoin would be a good idea. One USB stick will do the job with no third party required.
Well what is the point of bribing someone with bitcoin when you can basically do the same job with cash? The discussion has been in the past about buying drugs with bitcoin, this is essentially the same. The problem is that you can buy drugs and bribe anyone with any currency, not just bitcoin.
Cash is anonymous as well, and if you are bribing someone in real life then there is no real benefit of using bitcoin. Unless, you are bribing across borders In which case you wont be able to pass on a USB stick to the guy youre bribing
Anyways, bribing isnt a good idea at all. Its illegal, youll get caught.