Quote from: empoweoqwj on January 03, 2014, 10:37:32 AM

Quote from: upal on January 02, 2014, 09:57:58 PM

Quote from: yogi on January 02, 2014, 09:26:23 PM

Not sure what you mean by 'register the block height of a transaction', but the likelihood of a block being orphaned becomes exponentially more improbable the deeper it is in the chain.

I mean I was doing some calculation on the following transaction taking it as a reference.

https://blockchain.info/rawtx/114f37f3e30c7d9b5d5339e9a1652f2f065d0413fe34ee1121de0f21a50aaed3

As far as I can remember, the block height I registered for this transaction was 273824. But now it seems, its block height is 266559 !!! So, I am confused, if it is my mistake or block height can change with time !!!

By 'block height' do you mean 'block length'?

I am not sure what is 'block length', but in the link mentioned above blockchain.info returns a value against block_height, which if I deduct from current main chain block height (https://blockchain.info/q/getblockcount), returns the no. of confirmations.