I've looked at some of the more popular blockchain explorers, but none of them seem to provide the feature I'm looking for. I'd like to find a blockchain explorer that allows you to see raw Tx data and raw block headers. The explorer's I've seen parse the raw data and present it in a more human readable format. Are there any that provide the raw data?

Thank you!

3 Answers 3


You can get this info from blockchain.info, by simply adding ?format=hexto the end of the relevant URL.

For example, here is a recent block (height 509,244):


And here is the raw data for that block, in hex:


(Note that you will need to parse the block header out of this data, as that URL will dump the raw data for the entire block)

Similarly, here is a transaction from that block:


And here is the raw data from that transaction, in hex


  • Thank you, didn't know about this! Just what I was looking for.
    – Hendeca
    Commented Feb 15, 2018 at 5:42
  • Do you happen to know the URL for testnet?
    – igobivo
    Commented Apr 26, 2021 at 12:15

You can use insight by bitpay:

  • This is also a great option, only accepting the other answer because it's more in line with what I was looking for, AKA online block explorer with that functionality.
    – Hendeca
    Commented Feb 15, 2018 at 5:42

Updated for October 2021: blockchain.info (now blockchain.com) doesn't give raw data back just from appending ?format=hex to its usual explorer anymore. Rather, you have to use their API, which they document here: https://www.blockchain.com/api/blockchain_api

I couldn't get this to work in my browser, but at the terminal this worked for me:

% wget -O block154595.blk "https://blockchain.info/rawblock/0000000000000bae09a7a393a8acded75aa67e46cb81f7acaa5ad94f9eacd103?format=hex"

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