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Author Topic: Two "concatenated" txs in the same block, is it possible?  (Read 203 times)
reee
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August 31, 2017, 04:12:58 PM
 #1

Let's say we have these 2 transactions:

tx1:   address_A sends 1 BTC to address_B
tx2:   address_B sends 0.5 BTC to address_C
(assume also that the initial balance of address_B is 0 BTC)

Can these 2 transactions be included in the same block?
If so, can you link an example of a block including two transaction like these?

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August 31, 2017, 04:18:32 PM
 #2

Can these 2 transactions be included in the same block?
Yes.

If so, can you link an example of a block including two transaction like these?
https://blockchain.info/tx/42f7d0545ef45bd3b9cfee6b170cf6314a3bd8b3f09b610eeb436d92993ad440 was included in block 481824. A spend from one of its outputs is https://blockchain.info/tx/c586389e5e4b3acb9d6c8be1c19ae8ab2795397633176f5a6442a261bbdefc3a which was also included in block 481824.

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August 31, 2017, 04:22:35 PM
 #3

I'm not able to find transaction id's but I have seen this. Both Transactions were confirmed at the same time.

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August 31, 2017, 05:26:22 PM
 #4

Can these 2 transactions be included in the same block?
Yes.

If so, can you link an example of a block including two transaction like these?
https://blockchain.info/tx/42f7d0545ef45bd3b9cfee6b170cf6314a3bd8b3f09b610eeb436d92993ad440 was included in block 481824. A spend from one of its outputs is https://blockchain.info/tx/c586389e5e4b3acb9d6c8be1c19ae8ab2795397633176f5a6442a261bbdefc3a which was also included in block 481824.

Thanks.
Ah, it's the "famous" segwit tx  Smiley

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aleksej996
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September 01, 2017, 12:19:31 PM
 #5

Child-Pay-For-Parent method of bumping up the fees wouldn't be possible if it wasn't for this btw. So I assume that recent blocks are full of it, since the fees skyrocketed in last few weeks.

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