> For the complete documentation index, see [llms.txt](https://treves-studios.gitbook.io/bm-learning-center/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://treves-studios.gitbook.io/bm-learning-center/tattoo-properties/functionality.md).

# Functionality

**Status** – Tattoo NFTs can be sold multiple times before they are even applied on skin in real life. A *Pristine* tattoo may hold more market value than an *Inked* one.

All new tattoos have *Pristine* status at creation. Once a tattoo is inked in real life, its status is changed to *Inked* through a blockchain transaction. Once a tattoo’s status turns to *Inked*, it can never turn back to *Pristine*.\
\
**Inked Count** – A tattoo can be inked more than once, to multiple owners. On BirthMark, collectors can send an *Inking Request* for the tattoos they have bought on the secondary.\
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Every time a tattoo is inked in real life, *Inked Count* increments by 1. All tattoos have an *Inked Count* of 0 at creation, which is the same as being *Pristine*.

**Ink Date** – When artists list their tattoos for sale on BirthMark, they specify a deadline for the real life application (inking) of that tattoo.

<figure><img src="/files/YmhCc1ObqFGJuikYTtY1" alt="" width="375"><figcaption><p>NFT tattoos have functionality</p></figcaption></figure>

{% hint style="warning" %}
**Important:** Once a sale takes place, it’s collector’s responsibility to set an appointment with the artist before the *Ink Date*. \
\
Artists are responsible for inking the tattoos they’ve sold at no extra cost, unless, the tattoo's *Ink Date* has already expired.\
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A collector can send an *Extension Request*, or, a new *Inking Request* to the artist, any time. Artists and collectors can set a new *Ink Date* for their tattoos on BirthMark.
{% endhint %}

<figure><img src="/files/Fg7o0IOvSpxoKUTdNDhE" alt=""><figcaption><p>Collectors can send requests to artists and update their tattoos' properties</p></figcaption></figure>


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