Вот здесь: http://dot-bit.org/tools/nextDifficulty.php хороший предсказатель сложности сделали как по namecoin, так и по bitcoin...
Namecoin difficulty
Current difficulty : 15071.2056539
Estimated :
- next difficulty : 27546.5168107 (x1.83)
- next date: 21/06/2011 08:58 +0000
Instant difficulty : 31844.3129204 (x2.11)
Bitcoin difficulty
Current difficulty : 567358.224571
Estimated :
- next difficulty : 843058.043327 (x1.49)
- next date: 15/06/2011 22:32 +0000
Instant difficulty : 848368.510915 (x1.5)
Bitcoin / Namecoin difficulty ratio
Current (NMC per BTC) : 37.65
Next ratios :
- 15/06/2011 22:32 : 55.94
- 21/06/2011 08:58 : 30.6