1 2017-09-28 01:50:55 <foothedreamer> Hello Greg, following your comment on 'Address expiration times should be added to BIP-173' thread, you mentioned that changes is not possible, because BIP is already deployed, but BIP173 is still in draft status, what are the guidelines for changes during draft stage?
 2 2017-09-28 02:12:13 <vivo> Quick question. What is RPC?
 3 2017-09-28 02:26:35 <r251d> vivo: "RPC" means "remote procedure call". It's a way for other applications to use Bitcoin Core features.
 4 2017-09-28 08:34:42 <sdfgsdfg> its just API
 5 2017-09-28 08:35:45 <sdfgsdfg> wow... q from 6 hours ago. I'm rushing for help ! lol
 6 2017-09-28 18:26:11 <Chris_Stewart_5> What is the significance of 0xaa21a9ed in the witness commitment in the coinbase tx output vector
 7 2017-09-28 18:30:22 <Chris_Stewart_5> Is it picked at random?
 8 2017-09-28 18:30:36 <arubi> probably some string that isn't likely to occur anywhere with meaning
 9 2017-09-28 18:30:47 <arubi> so you can search for it in a tx without actually parsing it
10 2017-09-28 18:31:48 <Chris_Stewart_5> arubi: I don't fully understand covert ASICBOOST, but I was wondering if that string was specifically picked to prevent it?
11 2017-09-28 18:31:56 <arubi> nah
12 2017-09-28 18:31:59 <Chris_Stewart_5> ah ok.
13 2017-09-28 18:32:12 <arubi> it's the witness commitment itself that ruins the very efficient type of covert boosting
14 2017-09-28 18:33:30 <arubi> I say ruins but I actually like that it does that :)
15 2017-09-28 18:39:56 <arubi> oh Chris_Stewart_5 , I just remembered: http://www.mit.edu/~jlrubin/public/pdfs/Asicboost.pdf , see page 11 for segwit stuff
16 2017-09-28 18:40:17 <arubi> txid commitment in coinbase rather.  segwit having this is a byproduct
17 2017-09-28 18:46:05 <Sentineo> so now it is picked to stop asic boost or not? ;,
18 2017-09-28 18:48:38 <arubi> neither the wtxid commitment or the 0xaa21a9ed stuff were picket to stop this type of covert asicboost
19 2017-09-28 18:50:02 <arubi> segwit uses wtxid commitment to commit to witnesses in transactions, and it puts it as an output in the generation tx because that's pretty much the cleanest place to put it aside from inventing some other transaction
20 2017-09-28 18:50:45 <Sentineo> yeah an op return in the coinbase, right?
21 2017-09-28 18:50:53 <arubi> as an output, yes
22 2017-09-28 18:51:28 <Sentineo> cool pdf, will go over it when i have more time, I just raced through it
23 2017-09-28 18:51:52 <Sentineo> ty
24 2017-09-28 18:52:11 <arubi> yw
25 2017-09-28 23:28:04 <ohpesky> Newbie here. Is there a way to write multisg script such that it only allows certain combination? Ex: 2 [PK 1] [PK 2] [PK 3] 3 checksig but the two signatures must contains 1's