freenode #monero

31 Dec 2019

[XMR] Be excellent to each other and welcoming to newcomers || getmonero.org || Dev: #monero-dev || Pool related: #monero-pools || Price chat: #monero-markets || OTC: #monero-otc || People can & do log this channel || DON'T USE Changelly, Freewallet or Minergate: reddit.com/r/monero/wiki/avoid

• 01:09
  charolastra
  how closely are the wallet-cli/rpc and the deamon connected. i've noticed that the wallet blockheight is dealayed to the daemon
• 02:44
  M7918070_[m]
  Does Monero support cross-chain atomic swaps, or is multisig your only option?
• 02:45
  M7918070_[m]
  I found this: old.reddit.com/r/Monero/comments/8e…ain_atomic/?st=k4t91pas&sh=c8574f80
• 02:45
  M7918070_[m]
  * I found this: old.reddit.com/r/Monero/comments/8e…e_best_way_to_do_cross_chain_atomic
• 02:48
  M7918070_[m]
  It's also possible to do it with an intermediary which is trusted to not be outright scammy but doesn't have to be trusted - just do escrow, but of the actual txns instead of holding the coins
• 03:09
  M7918070_[m]
  A really ghetto way would be to use the private->public key function as a hash function.
• 03:10
  M7918070_[m]
  Then you could do cross-chain swaps between ETH and XMR: set up a 2-of-2 multisig address in Monero, and a contract that requires the private key in Ethereum. Since you can do cross-chain swaps between (for instance) BTC and ETH, that means you can do multi-leg XMR <-> BTC swaps.
• 03:31
  bigslim[m]
  whats up with the twitter feed in the GUI source? Was this ever intended to be used?
• 03:40
  gingeropolous
  back in the day, like 2014, packing that kind of stuff into guis was considered .... useful? I dunno. I never understood it
• 03:44
  bigslim[m]
  its calling your requested feed on your account and or slected users
• 03:45
  bigslim[m]
  I dunno why anyone would ever want that specifically
• 04:11
  bigslim[m]
  waz dis: github.com/aeonix/aeon-gui/tree/master/installers/windows
• 04:25
  gingeropolous
  uh, a windows installer for the GUI
• 04:36
  bigslim[m]
  is that some additional installer or is it just the source that builds the windows installer for gui?
• 06:50
  rbrunner
  bigslim: Check the ReadMe. It's an InnoSetup script able to build a standalone Windows installer exe for the Monero GUI wallet.
• 06:51
  rbrunner
  It came in with stoffu's code rebase from Monero and looks unmodified, so would of course not work for AEON without modifications.
• 13:04
  nonie
  All the videos from 36c3 media.ccc.de/c/36c3
• 16:04
  fullmetalScience
  Hey, how is the second char of an address determined?
• 16:05
  moneromooo
  By the low bits of the spend key IIRC.
• 16:06
  moneromooo
  See get_account_address_as_str.
• 16:13
  immans
  hello all
• 16:42
  fullmetalScience
  From there, I've ended up checking the code in config::testnet, but the NETWORK_ID's provided there don't make much sense to me yet.
• 16:44
  fullmetalScience
  ... or my decoder is just wrong. A testnet base58 prefix can be ... 9, A or H, right?
• 16:46
  moneromooo
  I never saw H. Subaddresses maybe ?
• 16:47
  asymptotically
  fullmetalScience: because of the way the base 58 encoding works, one byte can influence more than one character in the final string
• 16:52
  fullmetalScience
  Given the "18" that indicates the main network, how do I get to the "4" that leads any mainnet primary address?
• 16:52
  asymptotically
  don't look at the 4. decode the full base58 string and look at that instead
• 16:54
  fullmetalScience
  Okay, but how is it "ensured" then that all primary addresses start with a 4? Or, how is it ensured that the entirety of the factors don't cause a different starting character?
• 16:55
  fullmetalScience
  Afaiu we merge 18 + pubspend + pubview + csum
• 16:55
  fullmetalScience
  concat*
• 16:55
  asymptotically
  it's like going to hex, or to octal (just scarier and more upsetting)
• 16:56
  moneromooo
  Binary.
• 16:57
  moneromooo
  er, input is binary, output is text.
• 16:57
  moneromooo
  The 18 is 0x18 IIRC. All the rest is binary appended to it.
• 16:57
  moneromooo
  Keys, checksum. Possibly payment id.
• 16:57
  fullmetalScience
  Okay, so the network byte is converted separately?
• 16:58
  moneromooo
  The fact that the first byte is 0x18 ensures you get a 4 prefix.
• 16:58
  moneromooo
  I don't think so.
• 16:58
  asymptotically
  no it all happens at once. base58(0x18 || public spend key || public view key || hash of previous)
• 16:59
  asymptotically
  what language are you implementing your decoder/validator in? i have a java one you're welcome to steal :)
• 16:59
  moneromooo
  I have a C++ one you're welcome to copy if you abide by the BSD licence ^_^
• 16:59
  fullmetalScience
  It's more about understanding the internals :)
• 17:00
  moneromooo
  Maybe look at the base58 unit tests.
• 17:00
  asymptotically
  you can hurt yourself on c++. just sign all of your memory away to the jvm and embrace java
• 17:01
  fullmetalScience
  For example, I had thought that testnet always starts with 9. Mastering Monero confirms that. But I created a testnet wallet that starts with A
• 17:05
  asymptotically
  testnet wallets always start with the byte 53, 54, or 63. you can play around with different starting bytes on xmr.llcoins.net/addresstests.html
• 17:05
  asymptotically
  use inspect element to change the box, and make sure to enter it as hex instead of decimal
• 17:05
  moneromooo
  Then Mastering Monero is wrong. 9 and A are both valid for testnet.
• 17:06
  moneromooo
  Only 4 for mainnet.
• 17:07
  fullmetalScience
  ... and how do we know which possibilities exist for the second char?
• 17:07
  moneromooo
  It depends where the mapping starts really. To compare with real numbers for simplcity: If your keyspace is 0.5 wide, and it starts at 3.4, then all your keys will start with 3. If the keyspace starts at 3.8, ~40% will start with 3, and ~60% wil start with 4.
• 17:08
  fullmetalScience
  Like, it seems for testnet (9) "t" to "z" is possible, while for testnet (A) there are other stings
• 17:08
  fullmetalScience
  chars*
• 17:08
  moneromooo
  You can make a good guess by encoding the keys 00.00 and ff..ff.
• 17:08
  moneromooo
  That'll encompass your keyspace.
• 17:09
  fullmetalScience
  Ah that's why we have like 9t - Awhatever
• 17:09
  moneromooo
  Not all keys are valid in that full space, but close enough.
• 17:12
  fullmetalScience
  So can we know for sure beforehand which combinations for the first to characters in the base58 encoding come up?
• 17:13
  fullmetalScience
  Let's say I've seen 9t, 9u, 9v, 9w, 9z, A0, A1 so far. Is it certain that 9x or 9y also exist as possibilities? (just an example)
• 17:14
  asymptotically
  you can figure them all out if you want, but imo it doesn't matter, only the bytes it represents matter
• 17:15
  fullmetalScience
  Backround: The vanity address generator at moneroexamples/ doesn't allow searching for A2. I know however, that A2 is a possible address.
• 17:17
  fullmetalScience
  Haven't checked its code yet, but I'd guess that would indicate it to just hold a hard-coded list of possibilities it checks against when the user makes their choice.
• 17:50
  fullmetalScience
  By the way, does anyone know how to get into private testnet mode on Monerujo?
• 17:50
  fullmetalScience
  Or common testnet, fwiw.
• 18:48
  camthegeek`
  happy new year fellow monero'ers! :)
• 18:53
  rottensox
  you're a masari mole.
• 18:53
  rottensox
  get out.
• 19:04
  camthegeek`
  all paths lead to home rottensox