Ideally, I am looking for a service like http://statoshi.info/, but one that displays the real-time number of inputs and outputs in the blockchain.

Note that I am not looking for information on the UTXO set, but the set of all inputs and outputs that are in the main bitcoin blockchain.

This is a useful statistic for developers because it has implications for the data storage requirements of parsing the blockchain and storing data per input/output.

  • Would you want just the current number, or also a historical graph? Commented Jul 31, 2015 at 14:53
  • @NateEldredge The current number would help. A historical graph isn't necessary, as that information is out of date. However, those current numbers, while helpful, wouldn't really give an answer to the question, as I'm looking for a service/API that displays the realtime number, so that this question can be useful to others looking for this data whenever they find this question (I don't want the answer to go out of date quickly).
    – morsecoder
    Commented Jul 31, 2015 at 15:20

1 Answer 1




This website displays statistics about its own output database, though it should be very rare that any developer need to maintain an index in this way. Most people will only need to interact with their own, unspent outputs rather than the entire history of the mostly unrelated chain.

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