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timeout: 246 seconds] 07:33 -!- vtnerd [~Lee@173-23-103-30.client.mchsi.com] has joined #bitcoin-wizards 07:34 -!- son0p [~ff@181.136.99.9] has quit [Quit: leaving] 07:35 -!- son0p [~ff@181.136.99.9] has joined #bitcoin-wizards 07:39 -!- Aaronvan_ is now known as AaronvanW 08:05 < andytoshi> in fairness to them, they claim to have done the review in 7 hours 08:05 < andytoshi> i'll check on all the null pointer stuff, thanks. at first glance it looks like it's all in the grin extensions 08:07 -!- setpill [~setpill@unaffiliated/setpill] has quit [Quit: o/] 08:07 < kanzure> who asks for a 7 hour libsecp256k1-zkp review..? 08:07 < kanzure> at minimum you need at least 8 hours! 08:07 -!- jtimon [~quassel@92.28.134.37.dynamic.jazztel.es] has joined #bitcoin-wizards 08:15 -!- Dizzle [~Dizzle@unaffiliated/dizzle] has quit [Ping timeout: 268 seconds] 08:15 < drexl> aparently some anonymous donor paid them directly 08:17 < andytoshi> no issues apply to my code. thanks for the heads up 08:22 -!- son0p [~ff@181.136.99.9] has quit [Remote host closed the connection] 08:28 < sarang> kudos andytoshi 08:35 -!- tiagotrs [~user@unaffiliated/tiagotrs] has quit [Ping timeout: 245 seconds] 08:37 -!- Murch [~murch@50-200-105-218-static.hfc.comcastbusiness.net] has joined #bitcoin-wizards 08:42 -!- enemabandit [~enemaband@185.227.37.188.rev.vodafone.pt] has quit [Remote host closed the connection] 08:42 -!- enemabandit [~enemaband@185.227.37.188.rev.vodafone.pt] has joined #bitcoin-wizards 08:49 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has joined #bitcoin-wizards 08:54 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has quit [Ping timeout: 250 seconds] 08:54 -!- echonaut [~echonaut@46.101.192.134] has quit [Remote host closed the connection] 08:55 -!- echonaut [~echonaut@46.101.192.134] has joined #bitcoin-wizards 08:58 -!- phwalkr [~phwalkr@192.32.61.94.rev.vodafone.pt] has quit [Quit: Leaving...] 08:59 -!- schmidty [~schmidty@unaffiliated/schmidty] has quit [Remote host closed the connection] 09:00 -!- schmidty [~schmidty@unaffiliated/schmidty] has joined #bitcoin-wizards 09:01 -!- pinheadmz [~matthewzi@104-56-112-203.lightspeed.sntcca.sbcglobal.net] has joined #bitcoin-wizards 09:02 -!- schmidty [~schmidty@unaffiliated/schmidty] has quit [Read error: Connection reset by peer] 09:02 -!- schmidty [~schmidty@unaffiliated/schmidty] has joined #bitcoin-wizards 09:03 -!- riclas [riclas@148.63.37.111] has joined #bitcoin-wizards 09:03 < riclas> hey guys, here's an MsC work done by a student of my department. let me know what you think, good and bad. 09:03 < riclas> http://www.gsd.inesc-id.pt/~ler/reports/joaomarcalea.pdf 09:03 < riclas> it's published in an academic conference soon 09:03 -!- echonaut [~echonaut@46.101.192.134] has quit [Remote host closed the connection] 09:04 -!- echonaut [~echonaut@46.101.192.134] has joined #bitcoin-wizards 09:07 -!- aguycalled [~user@unaffiliated/aguycalled] has 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[~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has joined #bitcoin-wizards 10:08 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has quit [Remote host closed the connection] 10:09 -!- JackH [~laptop@host86-134-40-210.range86-134.btcentralplus.com] has joined #bitcoin-wizards 10:22 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has joined #bitcoin-wizards 10:22 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has quit [Remote host closed the connection] 10:22 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has joined #bitcoin-wizards 10:27 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has quit [Ping timeout: 258 seconds] 10:41 -!- DeanGuss [~dean@gateway/tor-sasl/deanguss] has quit [Ping timeout: 256 seconds] 10:55 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has joined #bitcoin-wizards 10:57 -!- CryptoDavid [uid14990@gateway/web/irccloud.com/x-jltxbqapvajotdyq] has quit [Quit: Connection closed for inactivity] 11:00 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has quit [Ping timeout: 250 seconds] 11:21 -!- rh0nj [~rh0nj@88.99.167.175] has quit [Remote host closed the connection] 11:24 -!- rh0nj [~rh0nj@88.99.167.175] has joined #bitcoin-wizards 11:27 -!- Zenton [~user@unaffiliated/vicenteh] has joined #bitcoin-wizards 11:34 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has joined #bitcoin-wizards 11:39 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has quit [Ping timeout: 264 seconds] 11:50 < gmaxwell> riclas: Thanks for the link. I haven't read it carefully yet, but a few questions come to mind. Let me state my understanding of the idea behind it. 11:52 < gmaxwell> Nodes relay transactions to a small number of peers and observe, per peer they relayed to, how long before the transaction shows up in a block. They use this information to form a ranking on peers, and then adaptively forward to only the top O(log(nodes)) plus a small number of random additional peers (to improve robustness and explore graph changes). 11:53 < gmaxwell> My initial impression is that this would be really harmful for block propagation latency, since it does not particularly attempt to get all likely-to-be-mined transactions to all nodes in advance of the block... only really attempts to get transactions to miners. 11:55 < gmaxwell> I guess I'd have to play with a simulator to say more, but I get the impression that this approach would only learn its topology rather slowly (since blocks are found relatively slowly) and would perhaps be pretty exposed to one shot topology changes... e.g. some node that connects to all the miners and a bunch of other nodes... making them all good forwarders.. then goes away. 11:56 -!- CryptoDavid [uid14990@gateway/web/irccloud.com/x-dwgntnwwyznrddkg] has joined #bitcoin-wizards 11:56 < gmaxwell> but it's very interesting, without these results I wouldn't have expected this kind of approach to work well at all, just due the signal being so noisy, even in simulation. 11:58 < gmaxwell> realted but not in response; Gleb, pieter, and myself have a paper submitted for publication on relay enhancements based on ideas explained at https://bitcointalk.org/index.php?topic=1377345.0 (but greatly fleshed out and refined). Though perhaps they could be further improved by adaptie ranking. 11:59 < gmaxwell> adaptive* 12:23 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has joined #bitcoin-wizards 12:33 -!- DeanGuss [~dean@gateway/tor-sasl/deanguss] has joined #bitcoin-wizards 12:49 -!- mappum_ [uid43795@gateway/web/irccloud.com/x-ugdhcmwdznmhbzyx] has joined #bitcoin-wizards 12:51 -!- drexl [~drexl@cpc130676-camd16-2-0-cust445.know.cable.virginm.net] has quit [Quit: drexl] 12:52 < riclas> thanks for the feedback i will relay it, i'm not directly involved in it and i will be afk for some time. but at least it is useful simulation, which an MsC is good for :) 12:52 -!- dgenr8 [~dgenr8@unaffiliated/dgenr8] has quit [Quit: Leaving] 13:03 -!- enemabandit [~enemaband@16.77.54.77.rev.vodafone.pt] has joined #bitcoin-wizards 13:16 -!- vtnerd_ [~Lee@173-23-103-30.client.mchsi.com] has joined #bitcoin-wizards 13:16 -!- vtnerd [~Lee@173-23-103-30.client.mchsi.com] has quit [Ping timeout: 272 seconds] 13:22 -!- AaronvanW [~AaronvanW@unaffiliated/aaronvanw] has quit [Remote host closed the connection] 13:22 -!- DeanGuss [~dean@gateway/tor-sasl/deanguss] has quit [Ping timeout: 256 seconds] 13:24 < gleb> It seems like this protocol has an ultimate trade-off: sacrificing robustness to directed attacks on bottlenecks (top-ranked nodes) for relay efficiency? 13:26 < gleb> It also brings an incentive for miners to run top-ranked nodes and slow down competing blocks 13:27 < gleb> No, I withdraw my last message, because I think it's not correct :) 13:27 < gmaxwell> well, the raning is based on actual performance for txn showing up in blocks. So if you run a top ranked node then stop forwarding txn to other miners, you won't stay top ranked. 13:29 < gmaxwell> there was another paper (that AFAICT got pulled) which basically suggested sharing topology data and computing a miner rooted minimum spanning tree, then sending txn only along it. But by its nature it had a min-cut of 1, and also required perfect (accurate) visiblity. I think basically thats the idea you get if you take the idea in this paper and abandon security as a goal. 13:33 < gleb> Also, with these approaches, I think miners will start to pull blanked over themselves (by putting their nodes at different parts of the network), which will result in flooding close to what we have today? Because this routing policy will be confused 13:33 -!- AaronvanW [~AaronvanW@unaffiliated/aaronvanw] has joined #bitcoin-wizards 13:33 < gleb> pull the blanket* (I'm not sure that's the right idiom in English...) 13:35 < gmaxwell> gleb: I think it would result in that but not for the reason I think you're thinking. 13:36 < gmaxwell> I think that with this in place miners would want to all agressively flood any transaction they accepted, to avoid the propagation latency hit from the network's failure to propagate the transactions everywhere. 13:36 < gmaxwell> any miner that didn't would expirence an elevated orphaning rate. 13:37 -!- AaronvanW [~AaronvanW@unaffiliated/aaronvanw] has quit [Ping timeout: 250 seconds] 13:38 < gmaxwell> gleb: where I think we might gain something useful out of it in for the erlay work is perhaps using a similar hurestic to shape the low fanout relay. (e.g. if you low-fanout a txn to a node, but find yourself transfering it a lot via retcon, thats peer wasn't a very good choice) 13:41 < gleb> Nobody yet shown me why my idea of low-fanout along public network *only* is bad, so I'm sticking to that until someone does. And in that case it's only 10% of the network, so not much savings with that policy. 13:41 < gleb> If we switch to low-fanout to both in and out, then yes, it might make more sense. 13:42 < gmaxwell> gleb: among other things there is actually no clear idea in the network between a "public node" and not, thats an artifact that is visible to an all seeing simulator... but an indivigual node in the network doesn't know if its publicly reachable or not. 13:43 < gleb> I achieve that by flooding to outbound connections only (and not flooding what's reconciled), so it ends up flooding only through public 13:44 < gmaxwell> (though I totally agree that special ranking is likely to be a small improvement. ... though also you could see your public hurestic for low fanout as just being a special non-adaptive but really good case of that) 13:44 -!- son0p [~ff@181.129.4.210] has joined #bitcoin-wizards 13:50 < gleb> I'll talk to people at FC in a week and perhaps give a short talk there, and start to reaching out on the Internet shortly after that I guess. 13:53 < gleb> gmaxwell: "among other things": I would love to hear more concerns :) 14:10 -!- AaronvanW [~AaronvanW@unaffiliated/aaronvanw] has joined #bitcoin-wizards 14:15 -!- AaronvanW [~AaronvanW@unaffiliated/aaronvanw] has quit [Ping timeout: 250 seconds] 14:31 -!- thomasan_ [~thomasand@2605:a601:b021:f00:1410:68ea:1a88:181d] has quit [Remote host closed the connection] 14:46 -!- spinza [~spin@155.93.246.187] has quit [Quit: Coyote finally caught up with me...] 14:50 -!- AaronvanW [~AaronvanW@unaffiliated/aaronvanw] has joined #bitcoin-wizards 15:01 -!- spinza [~spin@155.93.246.187] has joined #bitcoin-wizards 15:13 -!- jtimon [~quassel@92.28.134.37.dynamic.jazztel.es] has quit [Quit: gone] 15:21 -!- son0p [~ff@181.129.4.210] has quit [Quit: leaving] 15:25 -!- AaronvanW [~AaronvanW@unaffiliated/aaronvanw] has quit [Ping timeout: 246 seconds] 15:57 -!- ddustin [~ddustin@unaffiliated/ddustin] has joined #bitcoin-wizards 16:09 -!- AaronvanW [~AaronvanW@unaffiliated/aaronvanw] has joined #bitcoin-wizards 16:12 -!- Guyver2 [AdiIRC@guyver2.xs4all.nl] has quit [Quit: Going offline, see ya! 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