<p>Janina Lowisz of Bitnation's BlockchainID project <a href="https://www.wired.com/2014/10/world_passport/" rel="nofollow noreferrer">became the first "World Citizen on the Blockchain"</a> by making a sort of blockchain passport:</p>

<p><a href="https://i.sstatic.net/XvTWk.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/XvTWk.jpg" alt="Janina Lowisz&#39;s blockchain passport"></a></p>

<p>Something similar could be done for identifying pets.</p>

<p>For instructions on how she did it, see:
<a href="https://github.com/MrChrisJ/World-Citizenship" rel="nofollow noreferrer">https://github.com/MrChrisJ/World-Citizenship</a></p>

CC BY-SA 3.0
2015-12-18T17:37:38.980Z
2015-12-18T17:37:38.980Z
Geremia
<p>I would like to print qr-code with transaction that contains my home address to print it for my dog's necklace. If dog will get lost everyone can scan it and get the address.
How can I prepare the transaction?</p>

CC BY-SA 3.0
2015-12-18T12:49:48.583Z
Why don't you just print the address as a QR-Code? What's the benefit of it being on the blockchain, when you want people to scan it from your dog's necklace?
Murch
CC BY-SA 3.0
2015-12-18T13:03:04.903Z
Because I want my dog to be the bitcoin user ;)
Sebastian Xawery Wiśniowiecki
CC BY-SA 3.0
2015-12-18T13:45:50.167Z
Is this to put a reward for finding your dog in the case that is is lost? If so, you'd need to put a private key, not the public address. The public address is what you pay TO. What good does having an address on the blockchain associated with your dog do?
morsecoder
CC BY-SA 3.0
2015-12-18T13:51:35.120Z
Guys, it is just example to show how to prepare the transaction with custom message :P
Sebastian Xawery Wiśniowiecki
CC BY-SA 3.0
2015-12-18T14:19:21.093Z
Your example doesn't work and only makes the question confusing. There are no custom messages in transactions.
Jannes
CC BY-SA 3.0
2015-12-18T14:47:18.727Z
@Jannes: http://wlangiewicz.com/blog/2014/10/24/how-to-put-custom-messages-into-bitcoin-blockchain-op-return/
Sebastian Xawery Wiśniowiecki
CC BY-SA 3.0
2015-12-18T23:02:30.427Z
@XaweryWiśniowiecki That's not something that you can put in a QR code. A transaction doesn't go into a QR code at all. I guess you could put an URL in the QR code that points to a blockchain explorer with a transaction ID. Still makes no sense though. Just make a website with your home address on it and make a QR code with the URL to that. Which still doesn't make sense. Why don't you create a vCard QR code? http://snapmyinfo.com/vcard/
Jannes
<transactions><qrcode>
Dog identifier in blockchain
Sebastian Xawery Wiśniowiecki
# Dog identifier in blockchain

(Asked by: username_0 on 2015-12-18)

I would like to print qr-code with transaction that contains my home address to print it for my dog's necklace. If dog will get lost everyone can scan it and get the address.
How can I prepare the transaction?

**Tags:** transactions, qrcode

> **Comments:**
> **username_1**: Why don't you just print the address as a QR-Code? What's the benefit of it being on the blockchain, when you want people to scan it from your dog's necklace?  
> **username_0**: Because I want my dog to be the bitcoin user ;)  
> **username_2**: Is this to put a reward for finding your dog in the case that is is lost? If so, you'd need to put a private key, not the public address. The public address is what you pay TO. What good does having an address on the blockchain associated with your dog do?  
> **username_0**: Guys, it is just example to show how to prepare the transaction with custom message :P  
> **username_3**: Your example doesn't work and only makes the question confusing. There are no custom messages in transactions.  
> **username_0**: @username_3: http://wlangiewicz.com/blog/2014/10/24/how-to-put-custom-messages-into-bitcoin-blockchain-op-return/  
> **username_3**: @XaweryWiśniowiecki That's not something that you can put in a QR code. A transaction doesn't go into a QR code at all. I guess you could put an URL in the QR code that points to a blockchain explorer with a transaction ID. Still makes no sense though. Just make a website with your home address on it and make a QR code with the URL to that. Which still doesn't make sense. Why don't you create a vCard QR code? http://snapmyinfo.com/vcard/  

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## 1 answers

### Answer by username_4 on 2015-12-18. Score: 2 | Accepted answer

Janina Lowisz of Bitnation's BlockchainID project [became the first "World Citizen on the Blockchain"](https://www.wired.com/2014/10/world_passport/) by making a sort of blockchain passport:

[![Janina Lowisz's blockchain passport](https://i.sstatic.net/XvTWk.jpg)](https://i.sstatic.net/XvTWk.jpg)

Something similar could be done for identifying pets.

For instructions on how she did it, see:
<https://github.com/MrChrisJ/World-Citizenship>


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