Quote from: CIYAM on September 28, 2014, 01:21:57 PM

Quote from: Pkofet on September 28, 2014, 01:16:30 PM

What about this vs this?
The two different transactions are broadcast at the same second (according to bc.i received time) and have 2 different destination addresses.

Perhaps the "wording" used in blockchain.info could be better (i.e. "double-spend attempt" vs. "double-spend").

Yes, my problem is basically that for me a double spend would be if one of the TX had at least one confirmation, but I cant tell how common this idea is.

Quote from: Pkofet on September 28, 2014, 01:16:30 PM

Quote from: shorena on September 28, 2014, 01:10:28 PM

Quote from: Pkofet on September 28, 2014, 01:05:17 PM

-snip-
While double-spending is rare, I don't think it is that rare.
You can take a look at https://blockchain.info/double-spends to check the latest 20 double-spending attempts.

People generally have different ideas of what a double spend actually is. I have no idea what this list by bc.i want to tell me, most of the TXs look pretty normal.

What about this vs this?
The two different transactions are broadcast at the same second (according to bc.i received time) and have 2 different destination addresses.

This looks interesting. The time is not relevant though. Its just the time bc.i received the TX. They however spend the exact same inputs. It might have been an experiment of sorts, since one was transmitted to bc.i from a node in germany and the other one from a node in japan and the amount of BTC transfered is very low.

Code:

{"double_spend":true,"block_height":322877,"time":1411876758,"inputs":[{"sequence":4294967295,"prev_out":{"n":0,"value":30000,"addr":"15KUh45rrsDWxffxyAvNtZZqivA3uuSWT2","tx_index":65485082,"type":0,"script":"76a9142f5f1af9b3dc4806d8f4b11aa5fb880d18b12da988ac"},"script":"483045022100eec570ea9dd29d0c25be3f56cf5e13f3be53e129e16f63d032c0b817ed1e9f0c0220344bfe30580bfe3e255a80c321694fceed28061692e045918cc25ef7d4ef4f9d01410400d81973c54901ea63f2fe2b5214f707dbac4e5c499ad1364d8148ee9c93663bded0f86c0f6ceaa2747d8ad4034dfeea781c9b16f202f22e76cfe64f01d49980"}],"vout_sz":1,"relayed_by":"106.187.96.219","hash":"1ae0763c896d1da162c7be8c998970231c5b38786db0ec93e6efc6cdd7d240a9","vin_sz":1,"tx_index":65484044,"ver":1,"out":[{"n":0,"value":10000,"addr":"1tokyoKz3RTWDNVLdGCBjEHkdvbAxh9rm","tx_index":65484044,"spent":true,"type":0,"script":"76a91409cc3ef2423ff7d0c3552d6b2b8efdcfef7c8fbb88ac"}],"size":224}

Code:

{"double_spend":true,"time":1411876758,"inputs":[{"sequence":4294967295,"prev_out":{"n":0,"value":30000,"addr":"15KUh45rrsDWxffxyAvNtZZqivA3uuSWT2","tx_index":65485082,"type":0,"script":"76a9142f5f1af9b3dc4806d8f4b11aa5fb880d18b12da988ac"},"script":"483045022100a96c1da1bc72172180ebab6ef9837727c065f851d50813059f188ada07c19faf022018365f048eab41617ab706c2e62f1379e1918d1fa26f0c163a1ff8f4248ddb7a01410400d81973c54901ea63f2fe2b5214f707dbac4e5c499ad1364d8148ee9c93663bded0f86c0f6ceaa2747d8ad4034dfeea781c9b16f202f22e76cfe64f01d49980"}],"vout_sz":1,"relayed_by":"5.9.104.212","hash":"9ea1dc2e2d9dca8e66022df9d63f4922e2ee92ad2354db1d6b3128d8b71cd7bd","vin_sz":1,"tx_index":65484042,"ver":1,"out":[{"n":0,"value":10000,"addr":"1o24eTapXpEWZcPi1B3JDegjDuhWPauN7","tx_index":65484042,"spent":true,"type":0,"script":"76a91408b4057f38740cc77c3b15c2e9e3ca81a9c26a1188ac"}],"size":224}