<p>The bitcoins would be lost.</p>

<p>It's also very, very, very (times a very big number) unlikely that a randomly chosen address would ever be generated, as such capability would mean that <a href="https://bitcoin.stackexchange.com/questions/22/is-it-possible-to-brute-force-bitcoin-address-creation-in-order-to-steal-money">brute force attacks</a> could be performed and Bitcoin as a payment system would no longer be secure.</p>

CC BY-SA 3.0
2012-10-02T01:00:01.113Z
2012-10-02T01:00:01.113Z
2017-04-13T12:47:33.660Z
Highly Irregular
<p>Yes. By the way this is exactly the point of a paper wallet like you can get from <a href="https://www.bitaddress.org/" rel="nofollow">https://www.bitaddress.org/</a>, you generate an address and private key that don't exist anywhere in the digital world, but you do transfer funds to the address. When you need them you add the private key to a bitcoin client to claim it.</p>

<p>Good luck by the way with finding out the private key of an address that was created randomly.</p>

CC BY-SA 3.0
2012-10-01T22:40:46.157Z
2012-10-01T22:40:46.157Z
Stijn Sanders
<p>you can, absolutely, send coins to any address, that is, any hash whatsoever.  that is the basis for this project: <a href="https://www.btproof.com" rel="nofollow">https://www.btproof.com</a></p>

<p>what I don't understand is, according to <a href="https://en.bitcoin.it/wiki/Address" rel="nofollow">https://en.bitcoin.it/wiki/Address</a> :</p>

<blockquote>
  <p>A Bitcoin address, or simply address, is an identifier of 27-34
  alphanumeric characters, beginning with the number 1 or 3, that
  represents a possible destination for a Bitcoin payment</p>
</blockquote>

<p>which begs the question, if the hash doesn't have to adhere to the above specification, then why have the spec?</p>

CC BY-SA 3.0
2013-12-17T18:43:56.537Z
2013-12-17T18:43:56.537Z
ekkis
<p>I want to note. There is about 2^256 valid private keys. But there is only 2^160 valid addresses. Hash functions are used to convert public key to address. So, it is very-very likely, that for any valid bitcoin address there is a valid private key.</p>

CC BY-SA 3.0
2013-12-18T09:58:21.477Z
2013-12-18T10:15:58.970Z
2013-12-18T10:15:58.970Z
Zergatul
<p>There's no such thing as a "non-existent" address.  </p>

<p>Other than valid addresses created by a client in which the private key is kept secret there are also are:</p>

<ul>
<li>Invalid addresses (which will fail the client's sanity checks and thus cannot be used when building a transaction) </li>
<li>There are also valid addresses in which no key exists.  The private key is required to spend the funds.  If the private key was lost or one was never generated (such as for 1BitcoinEaterAddressDontSendf59kuE) any amounts sent to that address are lost and can never be spent.  There is no way to know if a private key exists for 1BitcoinEaterAddressDontSendf59kuE or if it was a purposely created throw-away address.</li>
<li>There are also valid addresses in which no key can exist.  An answer to a related question provides <a href="https://bitcoin.stackexchange.com/a/1852/153">an example</a>.</li>
</ul>

<p>There is no way to know for sure that a valid address has no private key.  What is known is that a program like VanityGen would not be able to create an address that includes many readable words like the address 1BitcoinEaterAddressDontSendf59kuE contains using the type of computational capacity that exists today.  So it can be assumed beyond any realm of possibility (but not absolutely, positively 100% guaranteed) that bitcoins sent to that address are gone for good.</p>

<p>Related:</p>

<ul>
<li><a href="https://bitcoin.stackexchange.com/questions/924">Can a bitcoin be destroyed?</a></li>
<li><a href="https://bitcoin.stackexchange.com/q/1851/153">How to generate a valid bitcoin address for destroying bitcoins?</a></li>
</ul>

CC BY-SA 3.0
2012-10-02T01:52:19.020Z
2012-10-02T02:08:18.547Z
2017-04-13T12:47:33.583Z
Stephen Gornick
<p>If one were to send bitcoins to an address that has not been created yet, what would happen? Would the coins be lost forever? Would they just sit there until the address and key pair are generated?</p>

CC BY-SA 3.0
2012-10-02T01:52:53.670Z
possible duplicate of [Can a bitcoin be destroyed?](http://bitcoin.stackexchange.com/questions/924/can-a-bitcoin-be-destroyed)
Stephen Gornick
CC BY-SA 3.0
2012-10-02T11:40:52.270Z
If the address hadn't been created yet, how could you send coins to it? How would you know what the address was if it hadn't been created?
David Schwartz
<address><private-key><public-key>
What would happen if you send bitcoins to a non-existent Bitcoin address?
Sam Weinberg
# What would happen if you send bitcoins to a non-existent Bitcoin address?

(Asked by: username_0 on 2012-10-01)

If one were to send bitcoins to an address that has not been created yet, what would happen? Would the coins be lost forever? Would they just sit there until the address and key pair are generated?

**Tags:** address, private-key, public-key

> **Comments:**
> **username_1**: possible duplicate of [Can a bitcoin be destroyed?](http://bitcoin.stackexchange.com/questions/924/can-a-bitcoin-be-destroyed)  
> **username_2**: If the address hadn't been created yet, how could you send coins to it? How would you know what the address was if it hadn't been created?  

---

## 5 answers

### Answer by username_1 on 2012-10-02. Score: 5 | Accepted answer

There's no such thing as a "non-existent" address.

Other than valid addresses created by a client in which the private key is kept secret there are also are:

* Invalid addresses (which will fail the client's sanity checks and thus cannot be used when building a transaction)
* There are also valid addresses in which no key exists. The private key is required to spend the funds. If the private key was lost or one was never generated (such as for 1BitcoinEaterAddressDontSendf59kuE) any amounts sent to that address are lost and can never be spent. There is no way to know if a private key exists for 1BitcoinEaterAddressDontSendf59kuE or if it was a purposely created throw-away address.
* There are also valid addresses in which no key can exist. An answer to a related question provides [an example](https://bitcoin.stackexchange.com/a/1852/153).

There is no way to know for sure that a valid address has no private key. What is known is that a program like VanityGen would not be able to create an address that includes many readable words like the address 1BitcoinEaterAddressDontSendf59kuE contains using the type of computational capacity that exists today. So it can be assumed beyond any realm of possibility (but not absolutely, positively 100% guaranteed) that bitcoins sent to that address are gone for good.

Related:

* [Can a bitcoin be destroyed?](https://bitcoin.stackexchange.com/questions/924)
* [How to generate a valid bitcoin address for destroying bitcoins?](https://bitcoin.stackexchange.com/q/1851/153)


---

### Answer by username_3 on 2012-10-02. Score: 2

The bitcoins would be lost.

It's also very, very, very (times a very big number) unlikely that a randomly chosen address would ever be generated, as such capability would mean that [brute force attacks](https://bitcoin.stackexchange.com/questions/22/is-it-possible-to-brute-force-bitcoin-address-creation-in-order-to-steal-money) could be performed and Bitcoin as a payment system would no longer be secure.


---

### Answer by username_4 on 2012-10-01. Score: 2

Yes. By the way this is exactly the point of a paper wallet like you can get from <https://www.bitaddress.org/>, you generate an address and private key that don't exist anywhere in the digital world, but you do transfer funds to the address. When you need them you add the private key to a bitcoin client to claim it.

Good luck by the way with finding out the private key of an address that was created randomly.


---

### Answer by username_5 on 2013-12-17. Score: 1

you can, absolutely, send coins to any address, that is, any hash whatsoever. that is the basis for this project: <https://www.btproof.com>

what I don't understand is, according to <https://en.bitcoin.it/wiki/Address> :

> A Bitcoin address, or simply address, is an identifier of 27-34
> alphanumeric characters, beginning with the number 1 or 3, that
> represents a possible destination for a Bitcoin payment

which begs the question, if the hash doesn't have to adhere to the above specification, then why have the spec?


---

### Answer by username_6 on 2013-12-18. Score: 0

I want to note. There is about 2^256 valid private keys. But there is only 2^160 valid addresses. Hash functions are used to convert public key to address. So, it is very-very likely, that for any valid bitcoin address there is a valid private key.


---

