Obviously I don't know DPR or SN, but I really doubt that DPR is SN or even communicated with him. The reasons are entirely circumstantial but from what I've read of both of them:
- DPR is arrogant.
- DPR makes stupid mistakes.
- SN is fairly humble.
- SN is smarter than DPR.
- SN doesn't make mistakes.
Is it possible that DPR himself was an early adopter of BitCoins, and mined those early coins himself - giving him the occasion to later transfer them to himself? He might have had to become acquainted with the BitCoin crypto-currrency scheme for some time before he was confident enough in it to use it to protect his own identity, which means he may have been in the first couple of groups of people to download and use the software.