Quote from: FreeMoney on October 02, 2013, 02:11:48 AM

Quote from: spiral_mind on September 30, 2013, 03:18:20 AM

Each planet could have its own crypto currency. They could be sold on interplanetary exchanges using quantum entanglement to communicate instantly.

Actually the idea of a separate chain on other planets seems shaky to me. If miners on some planet are a lot faster or more efficient which seems likely then they can double spend or otherwise hassle the lesser for only a the one time fixed time cost of transporting the work. Maybe the lesser ought just accept a delay and/or use processors who settle on the greater planets chain. That should be workable, but I bet something smarter than that arrangement gets invented.

Some form of merged mining will likely be used.

Also, before we see separate chains we'll likely see usage of higher-level instant payment protocols, with actual raw Bitcoin settlement being done rarely.