Combined with nLockTime you could for instance only release a transaction at a given time and space.
Treasure hunts?
That would be a very boring hunt (i.e. not a hunt at all) for those that know bitcoin.
Not if the coordinates are hashed...
Describe things in more detail please. You certainly mean something more here, otherwise this is instantly crackable.
So we currently have nLockTime which for purposes of this conversation lock a transaction until a certain date and time.
Well... combined with nLockSpace a transaction would be locked so that it would not release until a certain date and time and physical location (again via gps x,y coordinates).
The purpose of nLockSpace would be to confine a transaction to a specified location on earth (within a certain degree of error, i.e. a few feet here or there), also given the correct time coordinates via nLockTime.
The data contained in the transaction (to be unlocked) does not necessarily have to be money/bitcoin but a message, for instance a video, audio or picture of you at that location months, years or decades later.
Today we have pictures with geo location embedded in them, well.... what if the picture of you existed at the location that you actually took it?
