scriptsig question

[anon4250158]

I was told some time ago that you can tell from the scriptsig whether an address is compressed or uncompressed.  For the following two situations, how would I find this out?

1. BTC transferred in and out (example: https://blockchain.info/address/1HZtQfmY99awDqSmAvBa7vuMpUMhu3vB8c)

2. BTC transferred in, but never out (example: https://blockchain.info/address/1AdU3EcimMFN7JLJtceSyrmFYE3gF5ZnGj)


Basically I don't understand how to read the scriptsig to get this info.  If someone could show me with those example addresses, I would appreciate it.

[amaclin]

1) have a look here:
https://blockchain.info/en/tx/97775c5dedf645c710deb068cc20930945d26589a359c3c88ce1c046711600aa

this transaction is "from 1HZtQfmY99awDqSmAvBa7vuMpUMhu3vB8c"
scroll down to "Input Scripts"
second line is looong line started with 04c25f8b394....
this is public key for address 1HZtQfmY99awDqSmAvBa7vuMpUMhu3vB8c
it starts with 04 - so this is "classic"/"uncompressed" key
(02 or 03 and shorter line will mean "compressed" public key, any other symbols - we are in Wonderland)

2) there are no outgoing transactions from 1AdU3EcimMFN7JLJtceSyrmFYE3gF5ZnGj
we can not say anything whether it "compressed" or "classic" (but the owner can)