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| 02:03:28 | phantomcircuit: | does bc.i use a fixed change address? |
| 02:07:11 | justanot1eruser: | phantomcircuit: at least in the recent past they did |
| 02:08:06 | justanot1eruser: | looks to be so https://blockchain.info/tx/e65d2e45b16bb5c0d444a01cc2b091f8476422a4eecd3644bdb164a4978c15f9 |
| 02:39:18 | justanot1eruser: | justanot1eruser is now known as justanotheruser |
| 02:56:41 | nsh: | hm |
| 03:43:53 | fanquake_: | fanquake_ is now known as fanquake |
| 04:12:53 | fanquake_: | fanquake_ is now known as fanquake |
| 05:07:53 | [\\\]: | [\\\] is now known as tripleslash |
| 05:35:26 | Pan0ram1x: | Pan0ram1x is now known as Guest96208 |
| 05:53:50 | op_mul: | phantomcircuit: yes, blockchain.info use fixed change addresses. in some rare cases they don't, but even then it's quite often a reused change address. given they have added bip32 support to their BE it seems they'll be adding BIP32 to their wallet soon, but they did it in a horrible way that exposes the MPK to them. |
| 07:33:28 | op_mul: | op_mul is now known as op_cat |
| 07:49:16 | lclc_bnc: | lclc_bnc is now known as lclc |
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| 09:43:27 | adlai: | what's the problem with giving out an MPK in a situation where it's OK for addresses to be correlated? |
| 09:43:52 | Luke-Jr: | adlai: it exposes everyone else to privacy leakage |
| 09:45:19 | adlai: | how? |
| 09:45:50 | adlai: | privacy-wise, sending to an address derived from a given mpk should be treated like sending to a public address |
| 09:46:41 | op_cat: | * op_cat twitches |
| 09:47:05 | op_cat: | it's nothing like giving out an address. when you give our your MPK you're pretty much giving out your whole wallet contents, forever. |
| 09:47:42 | op_cat: | you also have the insane security risk that is, if you leak one private key anybody with the MPK can leak all of them. it would be very easy to social engineer the pair out of people who think they know how bitcoin works but actually don't. |
| 10:09:12 | samson2: | samson2 has left #bitcoin-wizards |
| 10:23:06 | Luke-Jr: | adlai: no such thing as a "public address" :p |
| 10:23:24 | Luke-Jr: | bitcoin-used-correctly speaking |
| 10:23:41 | adlai: | * adlai meant "address which is publicly associated with an identity" |
| 10:25:01 | Luke-Jr: | adlai: well, it's different from that in that a MPK is presumably used more than once, but an address is only used once |
| 10:25:53 | op_cat: | adlai: you'd be hard pressed not to have an address that connects with something. |
| 10:57:54 | lclc: | lclc is now known as lclc_bnc |
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