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Multi-pools pose to a crypto currency when they start mining a coin at a very low difficulty in relation to their net pool hash. This allows many coins to be quickly and easily mined before the difficulty increases. Once the difficulty increases the multi-pool leaves a coin, dumps the coins on the market, and then leaves the dedicated existing miners with a very high difficulty and very few new coins to be mined. This leads to a drop in price and frustration among the committed community members & miners of the affected coin.
This keeps a blockchain from getting "stuck" i.e., not finding the next block for several hours following a major drop in the net hash of coin. It is all a balancing act. You need to allow the difficulty to increase enough between blocks to catch up to a sudden spike in net hash, but not enough to accidentally send the difficulty sky high when two miners get lucky and find blocks back to back. The same thing occurs with difficulty decreases. Since it takes much longer to find the next block, you need to allow it to drop quicker than it increases.
This keeps a blockchain from getting "stuck" i.e., not finding the next block for several hours following a major drop in the net hash of coin. It is all a balancing act. You need to allow the difficulty to increase enough between blocks to catch up to a sudden spike in net hash, but not enough to accidentally send the difficulty sky high when two miners get lucky and find blocks back to back. The same thing occurs with difficulty decreases. Since it takes much longer to find the next block, you need to allow it to drop quicker than it increases.
BitToken's Difficulty Adjustment will be changed soon from currently every 5 blocks to new difficulty retarget every 1 Block
to protect against multi-pools and an over-inflation of easily mined new coins.
BitToken's re-targets difficulty will be implemented between every block/ every 3 minutes. Stay tuned!
~Crytco
