1

Where can I find some double spend attempts examples on testnet? Can anyone refer me some TXIDs with double spends on testnet?

EDIT: I need some example in which an outpoint was intended to be used in two different transactions, like this one:

https://blockchain.info/tx/6900440e3bf9d7177ef69b8ca8bb620cb439d9261ce54b3df564f6778547003c

but on the testnet.

  • What does you mean? Bitcoins cannot be double spent. – Zergatul Feb 10 '14 at 17:25
  • I assume you mean a situation where two conflicting transactions appeared in close succession? – Nate Eldredge Feb 10 '14 at 17:30
  • 2
    A double spend wouldn't persist itself in the chain, as the longest chain will cause that double spend to be invalid. – goodguys_activate Feb 10 '14 at 18:25
  • @makerofthings7 right. I want to mark the surviving transaction as a 'double spend' attempt, just to alert the user – ematiu Feb 10 '14 at 18:34
  • There are multiple temporary chains. In that case you will need to monitor each chain and derive your use case in your app... I don't think that the temporary chains are kept permanently and are purged over time. – goodguys_activate Feb 10 '14 at 18:43
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Invalid transactions are not kept as part of the blockchain; they are, after all, invalid. Your best bet might be to listen to the chatter on the network (you'd require a custom-written client for this, I would imagine).

  • Connecting a program to the SOCKS5 proxy will be also sufficient. – Jori Mar 13 '14 at 7:57

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