<p>As long as you wait for 6 or more confirmations, your coins are safe. Waiting for 6 confirmations would make it quite difficult for Slush to pull ahead of the rest of the network with their own chain, and make it quite apparent if they did.</p>

<p>Even if Slush is really attempting double-spends, it really wouldn't make much sense to do so on a miner payout. It would make sense for many sorts of transactions (instant-payout gambling sites, digital or physical goods, etc.) but not to compensate you on <em>work you already did</em> for them (if they wanted to play that game, it'd be far easier to simply never pay you). All that would give them is miners that want to leave because they're being cheated.</p>

<p>A more likely double-spend scenario would be as described at the <a href="http://www.reddit.com/r/Bitcoin/comments/279sex/ghashio_double_spending/" rel="nofollow">GHash.IO &amp; double spending</a> post on Reddit. In short, it is believed that GHash.IO executed double spends against a Bitcoin-based betting site.</p>

<p>It's also important to note that blockchain.info's information on double spends being attempted could very well be misinterpreted (e.g. maybe an orphaned block, with a later payout, would result in the warning you see). <a href="https://blockchain.info/en/address/1AqTMY7kmHZxBuLUR5wJjPFUvqGs23sesr" rel="nofollow">That address</a> has a very long history.</p>

CC BY-SA 3.0
2014-08-01T17:59:04.297Z
2014-08-01T19:06:53.817Z
2014-08-01T19:06:53.817Z
Tim S.
<p>What does this blockchain.info alert mean?</p>

<blockquote>
  <p>Warning! this bitcoin address contains transactions which may be double spends. You should be extremely careful when trusting any transactions to or from this address.</p>
</blockquote>

<p>I got my first payout today from Slush pool, and <a href="https://blockchain.info/en/address/1AqTMY7kmHZxBuLUR5wJjPFUvqGs23sesr" rel="nofollow">one of the the inputs</a> of <a href="https://blockchain.info/pt/tx/84def4d8edcb74ab8c569d2137c4893b357f600d6c91937fbbcd938e3f008aa0" rel="nofollow">the transaction</a> showed this message. Is that something I should worry about? As of this writing, the transaction has already 54 confirmations.</p>

<blockchain.info><doublespend>
Warning about possible double spend at blockchain.info
mgibsonbr
# Warning about possible double spend at blockchain.info

(Asked by: username_0 on 2014-08-01)

What does this blockchain.info alert mean?

> Warning! this bitcoin address contains transactions which may be double spends. You should be extremely careful when trusting any transactions to or from this address.

I got my first payout today from Slush pool, and [one of the the inputs](https://blockchain.info/en/address/1AqTMY7kmHZxBuLUR5wJjPFUvqGs23sesr) of [the transaction](https://blockchain.info/pt/tx/84def4d8edcb74ab8c569d2137c4893b357f600d6c91937fbbcd938e3f008aa0) showed this message. Is that something I should worry about? As of this writing, the transaction has already 54 confirmations.

**Tags:** blockchain.info, doublespend


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## 1 answers

### Answer by username_1 on 2014-08-01. Score: 3 | Accepted answer

As long as you wait for 6 or more confirmations, your coins are safe. Waiting for 6 confirmations would make it quite difficult for Slush to pull ahead of the rest of the network with their own chain, and make it quite apparent if they did.

Even if Slush is really attempting double-spends, it really wouldn't make much sense to do so on a miner payout. It would make sense for many sorts of transactions (instant-payout gambling sites, digital or physical goods, etc.) but not to compensate you on *work you already did* for them (if they wanted to play that game, it'd be far easier to simply never pay you). All that would give them is miners that want to leave because they're being cheated.

A more likely double-spend scenario would be as described at the [GHash.IO & double spending](http://www.reddit.com/r/Bitcoin/comments/279sex/ghashio_double_spending/) post on Reddit. In short, it is believed that GHash.IO executed double spends against a Bitcoin-based betting site.

It's also important to note that blockchain.info's information on double spends being attempted could very well be misinterpreted (e.g. maybe an orphaned block, with a later payout, would result in the warning you see). [That address](https://blockchain.info/en/address/1AqTMY7kmHZxBuLUR5wJjPFUvqGs23sesr) has a very long history.


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