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April 26, 2016, 04:42:24 AM |
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The number of transactions included is decided by the miners. They can choose 0 transactions or as many transactions to fit the block size. They generally choose to maximize the transactions, since it doesn't cost them anything to add more transactions but they get the transaction fee.
This could hypothetically be manipulated by a large mining group, if the bet was substantial enough that they would want to. Alternatively, one could add many many small transactions with a high transaction fee to fill the block to maximum size or by adding large transactions to prevent the block from becoming bigger.
There's a myriad of ways to affect it, but no way to real predict it. Also, the ways of affecting it are rather costly and likely not worth the cost unless the bet is large.
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