What does script.revealed_tx refer to?

[crypto-perry]

Hi, I am trying to run some blockchain analysis to count how many bitcoins are in unspent outputs secured by public keys that are revealed in some transaction.
I am currently using out.address.script.revealed_tx to identify the outputs which have addresses which are revealed somewhere else. Can you please help me out and let me know if I am on the right path?

Here is my code:

# bitcoins in unspent outputs with addresses revealed in some input
s = []
c = []
for i in range(len(chain)):
    add = 0
    count = 0
    for out in chain[i].outputs.unspent.all:
        try:
            out.address.script.revealed_tx
            count += 1
            add += out.value
        except Exception as e:
            pass
    s.append(add)
    c.append(count)
ss = np.cumsum(s)
cc = np.cumsum(c)

[hkalodner]

Hi @Dii14,

You're close. The only thing wrong is that out.address.script.revealed_tx returns None when the address has never been spent rather than throwing an Exception so you just want to use

if out.address.script.revealed_tx:
    count += 1
    add += out.value

Also btw you can use for block in chain to iterate over blocks

[crypto-perry]

I tried that, but I got IndexOutOfBound Exception, so I assumed the field is just not created in the case the address was never spent from. How does this treat multi-sig scripts. What happens if only one of the public keys in a 2 of 3 multisig address is revealed in some input? Where are you populating this field? I tried to find it in the code :)