<p>No, don't add your 721 data here. The above example is all you should have, and then burn the token.</p>

CC BY-SA 4.0
2022-02-22T19:59:48.947Z
Thank you, may I ask how do you know this is the right way to do it?
Alicia Basilio
CC BY-SA 4.0
2022-02-23T12:29:06.887Z
Because I run Cardano minting vending machines for artists and have done it dozens of times.. :)

I've also spoken with the person who initially wrote the 777 CIP proposal. You can find the details here:

https://github.com/cardano-foundation/CIPs/pull/116/files
Tygar Pool
CC BY-SA 4.0
2022-02-22T18:39:32.110Z
2022-02-22T18:39:32.110Z
Tygar Pool
<p>I followed the  CIP 27 for implementing royalities:</p>
<p><a href="https://cardanoupdates.com/commits/facb8aa0ad9aa41f1a047b2000674fdea2162e71" rel="nofollow noreferrer">https://cardanoupdates.com/commits/facb8aa0ad9aa41f1a047b2000674fdea2162e71</a></p>
<p>Mint no name token with the policy then burn it wit the metadata incluiding royalities info:</p>
<p>for example:</p>
<p><a href="https://testnet.cardanoscan.io/transaction/2471b2b3092744b21ee7eb45f68e37f753f834ab911567219d9127e399f4ba9a?tab=metadata" rel="nofollow noreferrer">https://testnet.cardanoscan.io/transaction/2471b2b3092744b21ee7eb45f68e37f753f834ab911567219d9127e399f4ba9a?tab=metadata</a></p>
<pre><code>   {
   addr: [
      &quot;addr1q88604np2z4hkl9a78dhuxasnssrxzk5kz497yvw4wq7jjp7vt8s8tygau8&quot;,
      &quot;fl40vg3t7gxdzkq7uxl8sqmaqqkdxca0sg9y&quot;
   ],
       rate: &quot;0.1&quot;
}
</code></pre>
<p>then I burn the token.</p>
<p>My doubt is if should I add the same data that I added in the initial mint/burn as a field in the standard 721 metadata? so  the marketplace can fetch this field, or if it is not needed, i am guessing it should not be needed otherwise the initial mint/burn mechanism would be not needed, right?</p>

<nft><metadata>
Royalities CIP 27
# Royalities CIP 27

(Asked by: username_0 on 2022-02-21)

I followed the  CIP 27 for implementing royalities:
https://cardanoupdates.com/commits/facb8aa0ad9aa41f1a047b2000674fdea2162e71
Mint no name token with the policy then burn it wit the metadata incluiding royalities info:
for example:
https://testnet.cardanoscan.io/transaction/2471b2b3092744b21ee7eb45f68e37f753f834ab911567219d9127e399f4ba9a?tab=metadata
   {
   addr: [
      "addr1q88604np2z4hkl9a78dhuxasnssrxzk5kz497yvw4wq7jjp7vt8s8tygau8",
      "fl40vg3t7gxdzkq7uxl8sqmaqqkdxca0sg9y"
   ],
       rate: "0.1"
}

then I burn the token.
My doubt is if should I add the same data that I added in the initial mint/burn as a field in the standard 721 metadata? so  the marketplace can fetch this field, or if it is not needed, i am guessing it should not be needed otherwise the initial mint/burn mechanism would be not needed, right?

**Tags:** nft, metadata

---

## 1 answers

### Answer by username_1 on 2022-02-22. Score: 1 | Accepted answer

No, don't add your 721 data here. The above example is all you should have, and then burn the token.

> **Comments:**
> **username_0**: Thank you, may I ask how do you know this is the right way to do it?  
> **username_1**: Because I run Cardano minting vending machines for artists and have done it dozens of times.. :)  I've also spoken with the person who initially wrote the 777 CIP proposal. You can find the details here:  https://github.com/cardano-foundation/CIPs/pull/116/files  

---

