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I've read that pub keys aren't exposed until they're spent from. Can someone show me an example of a transaction prior to the pub key being exposed and then after? Where do i look?

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Just go to any typical, normal transaction on blockexplorer. Here's a link to one I picked at random. The input(s) are scripts where the public key and signature are provided to claim the outputs of previous transactions in the ScriptSig field. The output(s) are scripts where the public key has not yet been provided and contain only a hash of the public key in the ScriptPubKey field.

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  • thanks for that. is the Hash160 a combination of RIPEMD160(SHA256)?
    – joe
    Mar 7, 2013 at 21:50
  • @joe: Yes. It's documented here. Mar 8, 2013 at 1:33
  • Transaction bf89f7036bde78103b94cf1291c9389a5ed894045cebd5216f04f1a2aa5c5959 is not archived.
    – Mercedes
    Feb 11 at 11:36

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