<p>It has a Negative Balance of -0.00199614 BTC, but it also has an <a href="https://blockchain.info/tx/a35a5c0b334098c70bd2d955d0ecb23075eca72f42d3bf90b8a2f50fcddd07b9" rel="nofollow noreferrer">unconfirmed transaction</a> for the same amount.  The transaction is from 2015.</p>

<p>That report page is showing unconfirmed transactions as well as confirmed.
Presumably, that transaction will <strong><em>never</em></strong> get confirmed, because it would send the balance negative.</p>

CC BY-SA 3.0
2017-05-21T09:24:31.060Z
2017-05-21T09:24:31.060Z
abelenky
<p>The website shows two transactions spending the same transaction output. Such a construct of two conflicting transactions is referred to as a "doublespend". Only one of the two transactions can ever be confirmed, at which point the other becomes invalid.</p>

<p>While I can see why it may be interesting to continue to show the invalid unconfirmed transaction, it is nonsensical to continue using it to calculate the final balance of the address. Frankly, I'd consider it a bug in blockchain.info.</p>

CC BY-SA 3.0
2017-05-21T22:33:32.513Z
2017-05-21T22:33:32.513Z
Murch
<p>I was playing around with bitcoin and I discovered an address that appears to have a negative balance on the blockchain.</p>

<p>The details of this address are below.  At the time of writing the blockchain states the balance in the account is -0.00199614 BTC. </p>

<p><a href="https://blockchain.info/address/12AKRNHpFhDSBDD9rSn74VAzZSL3774PxQ" rel="nofollow noreferrer">https://blockchain.info/address/12AKRNHpFhDSBDD9rSn74VAzZSL3774PxQ</a></p>

<p>Does anyone know how a negative balance is possible?</p>

<p><strong>Details:</strong></p>

<p><strong>Bitcoin Address:</strong><br>
12AKRNHpFhDSBDD9rSn74VAzZSL3774PxQ</p>

<p><strong>Public Key:</strong> 04FDF4907810A9F5D9462A1AE09FEEE5AB205D32798B0FFCC379442021F84C5BBFC891EB16B0FAEF4BEF99BA6D522FB85470A20DF730808E583778AA35C7AF98F5</p>

<p><strong>Private Key:</strong><br>
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b</p>

<blockchain.info><doublespend><balance>
Negative Bitcoin Balance
Kenshin
# Negative Bitcoin Balance

(Asked by: username_0 on 2017-05-21)

I was playing around with bitcoin and I discovered an address that appears to have a negative balance on the blockchain.

The details of this address are below. At the time of writing the blockchain states the balance in the account is -0.00199614 BTC.

<https://blockchain.info/address/12AKRNHpFhDSBDD9rSn74VAzZSL3774PxQ>

Does anyone know how a negative balance is possible?

**Details:**

**Bitcoin Address:**  
12AKRNHpFhDSBDD9rSn74VAzZSL3774PxQ

**Public Key:** 04FDF4907810A9F5D9462A1AE09FEEE5AB205D32798B0FFCC379442021F84C5BBFC891EB16B0FAEF4BEF99BA6D522FB85470A20DF730808E583778AA35C7AF98F5

**Private Key:**  
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

**Tags:** blockchain.info, doublespend, balance


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## 2 answers

### Answer by username_1 on 2017-05-21. Score: 1 | Accepted answer

It has a Negative Balance of -0.00199614 BTC, but it also has an [unconfirmed transaction](https://blockchain.info/tx/a35a5c0b334098c70bd2d955d0ecb23075eca72f42d3bf90b8a2f50fcddd07b9) for the same amount. The transaction is from 2015.

That report page is showing unconfirmed transactions as well as confirmed.
Presumably, that transaction will ***never*** get confirmed, because it would send the balance negative.


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### Answer by username_2 on 2017-05-21. Score: 1

The website shows two transactions spending the same transaction output. Such a construct of two conflicting transactions is referred to as a "doublespend". Only one of the two transactions can ever be confirmed, at which point the other becomes invalid.

While I can see why it may be interesting to continue to show the invalid unconfirmed transaction, it is nonsensical to continue using it to calculate the final balance of the address. Frankly, I'd consider it a bug in blockchain.info.


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