What block had the most transaction fees? Why? How big can transactions be? What's the largest transaction (size, in bytes)?

1 Answer 1


I am not sure which block it is, but you can see it on this graph from blockchain.info. It was ~305 BTCs in transaction fees. The blockchain will not tell you why the transaction fees are so high. It is probably an accident or a joke.

I believe the largest size a block can be is measured in terms of bytes, and it is 1MB. So the largest transaction can be as large as 1MB of data will let it be.

  • Okay... My question was which block, and which transaction...
    – lurf jurv
    Apr 1, 2013 at 20:43
  • I just found one by random searching. Over $1000 tx fee: blockchain.info/tx/…
    – lurf jurv
    May 2, 2013 at 13:45

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