| 02:14:11 | wallet421: | wallet421 is now known as wallet42 |
| 02:41:45 | mr_burde_: | mr_burde_ is now known as mr_burdell_ |
| 02:42:54 | mr_burdell_: | mr_burdell_ is now known as mr_burdell |
| 17:39:23 | sendak.freenode.net: | topic is: Bitcoin research, hardfork wishlist, ideas for the future - see also: https://en.bitcoin.it/wiki/Hardfork_Wishlist https://en.bitcoin.it/wiki/User:Gmaxwell/alt_ideas |
| 17:39:23 | sendak.freenode.net: | Users on #bitcoin-wizards: andytoshi-logbot Graet roidster ielo HM jcrubino tacotime_ justanotheruser orperelman _ingsoc wallet42 spinza rdymac midnightmagic go1111111 hnz wangbus a5m0 gribble nanotube andytoshi MoALTz jtimon shesek ghtdak harrow K1773R hno @ChanServ typex Fistful_of_Coins Mikalv tucenaber trn gmaxwell sipa helo Ryan52 azariah4 phantomcircuit TD[away] zacm UukGoblin amiller pigeons petertodd Alanius Luke-Jr warren zfaith EasyAt jrmithdobbs Muis |
| 17:39:23 | sendak.freenode.net: | Users on #bitcoin-wizards: wumpus rs0 realazthat adam3us nOgAnOo jron ssshhh asoltys poggy_ Sorcier_FXK krl OneFixt crescendo ryan-c Sangheili ageis Krellan cfields sneak jgarzik iddo comboy bobke he1kki kinlo wrabbit edulix Emcy Guest81487 BigBitz michagogo|cloud qwertyoruiop forrestv optimator impulse espes__ CodeShark cypherdial nsh BlueMatt lianj heakins |
| 17:43:02 | tacotime_: | And, do I have it right? Okay, payer sends funds to some address generated from stealth address of payee, plus an OP_RETURN that publishes a secret (nonce). Payee scans blockchain looking for a pubkey and secret that will allow him to spend from some address. Payee finds said address, regenerates privkey from secret and pubkey, and then spends funds. |
| 17:43:56 | sipa: | correct |
| 17:44:09 | tacotime_: | Excellent. Thanks. |
| 18:26:47 | petertodd: | tacotime_: all correct. An interesting question is if it would be better to at least have the option for the payment to be recoverable from information purely in the txout - it's plausible that in the future it'd work better once you can get a miner proof of a txout's existence. |
| 18:27:40 | petertodd: | tacotime_: I'm waiting on some Javacsript ECDH benchmarks FWIW before I make any kind of decision - it'd be nice if web-wallets like coinpunk could receive stealth payments entirely in the browser with at least some privacy. |
| 18:28:08 | petertodd: | tacotime_: On the bright side, javacsript SHA256 grinding is plenty fast enough to support stealth + prefixes. |
| 18:29:11 | petertodd: | adam3us: that's exactly what I suggested actually, which leads to an interesting question that BlueMatt(?) brought up: Can you prove to a third party that a given transaction does *not* contain a stego-encoded data packet? With SCIP it's easy to see how that could be possible in principle, but I dunno if it can be made efficient enough to be practical. |
| 18:32:04 | nsh: | you can always upper-bound the redundancy |
| 18:32:13 | petertodd: | nsh: ? |
| 18:33:06 | nsh: | the "spare" information in the transaction after you discount the necessary |
| 18:33:36 | petertodd: | nsh: oh, this isn't standard stego really: you're hiding encrypted data in random junk, so there's no measure of spare to talk about |
| 18:33:48 | nsh: | oh, hmm |
| 18:33:58 | sipa: | well obviously the amount of data that can be stored is limited to the size of the transaction |
| 18:35:05 | petertodd: | the real question is can you prove the execution of a timelock crypto sequence, which is something as simple as 10,000 SHA256 invocations, such that you can prove the end result cheaply to a third party that can evaluate that proof cheaply |
| 18:35:18 | petertodd: | it's obviously possible in principle, but how can it be made practical? |
| 18:38:10 | nsh: | perhaps in the future there will be a market for verify-farms, like compile/render-farms, that perform some computation and provide short/cheap verification proofs for it and its inputs |
| 18:38:30 | petertodd: | nsh: right, that's the "in principle" part :P |
| 18:38:35 | nsh: | * nsh smiles |
| 18:39:33 | petertodd: | nsh: remember the Blub programmer principle: If Peter can't understand the crypto, it's obviously not practical. |
| 18:39:46 | nsh: | aye |
| 18:39:57 | sipa: | s/Pe/Pie/ |
| 18:40:04 | petertodd: | lol |
| 18:40:25 | nsh: | hehe |
| 18:40:45 | petertodd: | and actually, in practice I use a scricter standard: If Peter can't teach the crypto to someone else, it's not practical |
| 18:42:57 | sipa: | it's not necessarily stricter; you often learn things exactly by trying to explain them to others |
| 18:43:01 | nsh: | * nsh nods |
| 18:44:07 | nsh: | understanding-in-motion has a value above and beyond understanding-in-stasis |
| 18:44:12 | petertodd: | sipa: very true! in uni my smarter calculus classmates were always confused as to why my marks were so much worse than theirs given I was the guy always leading the study sessions :P |
| 18:44:16 | nsh: | like currency in some ways |
| 18:45:49 | kinlo: | blub programmer principle, does that require peter to be smart? :p |
| 18:47:13 | petertodd: | kinlo: the exact opposite :) |
| 18:49:35 | maaku: | maaku is now known as Guest75386 |
| 18:50:26 | Guest75386: | Guest75386 is now known as maaku |
| 19:02:53 | gmaxwell: | 21:45 < jron> slides from RWC if you haven't seen them yet: https://www.youtube.com/watch?v=Uh6erfE9HYE |
| 19:03:02 | gmaxwell: | (zerocash slides) |
| 19:04:39 | nsh: | the audio is almost comprehensible in that recording :) |
| 19:12:23 | justanotheruser: | What is the most interesting development in the cryptocurrency world? |
| 19:12:37 | justanotheruser: | Preferably something I haven't heard about |
| 19:19:13 | maaku: | Jeb donating 25M XRP to MIRI? |
| 19:19:22 | maaku: | kinda hard to guess what you haven't heard about |
| 19:19:26 | maaku: | also, #bitcoin |
| 19:28:50 | nsh: | wrt zerocash, i wonder if you could have some weird cypherpunk ritualized inaugeration event, with some carefully-selected and mutually-audited public parameter generation set-up, then everyone stands around it in robes looking solemn as the priests generate them and the machinery is then ritually destroyed |
| 19:29:01 | nsh: | some cross between the mimbari gray council and burning man |
| 19:30:28 | sipa: | #bitcoin-priests plz |
| 19:31:38 | nsh: | * nsh smiles |
| 19:32:06 | maaku: | * maaku joins #bitcoin-priests |
| 19:32:18 | orperelman: | lol |
| 19:32:23 | maaku: | make it happen nsh |
| 19:32:36 | nsh: | i'll start work on the liturgy |
| 19:35:42 | justanotheruser: | maaku: minecraft jeb? |
| 19:36:26 | maaku: | minecraft? no the guy who started MtGox and Ripple Labs |
| 19:36:48 | justanotheruser: | Is jeb magicaltux? |
| 19:37:57 | justanotheruser: | oh, reading the wiki. Looks like jeb sold it to magicaltux |
| 19:38:48 | sipa: | jed, you mean? |
| 21:54:28 | _ingsoc: | _ingsoc is now known as Guest63536 |