# NF.TD [FAQs]

By [NF.TD](https://paragraph.com/@nftd) · 2022-11-19

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**What is NF.TD?**  
NF.TD is your proof of identity, in one link.

**How does it work?**

*   **1)** Search for your username, and mint it as an NFT.
    
*   **2)** Customize your profile and prove ownership of socials like Farcaster, Twitter, Paragraph, Gallery, & Sound (more to come) - and your domains/websites. Otherwise, you can always link to anything you want via the “custom” button (no proof/verification).
    
*   **3)** Be your own checkmark and display your NF.TD url with your proven identity anywhere you interact with people.
    

**What happens when I mint an NF.TD username?**  
Once you mint your username, an NFT (ERC-721) gets custom generated with your username. The design is stored on-chain. You can then customize your NF.TD profile for that username.

![Custom generated NFT with a minted username, stored as an SVG on-chain.](https://storage.googleapis.com/papyrus_images/5bfadb039b499f14a3c55fe1c7a357bf.png)

_Custom generated NFT with a minted username, stored as an SVG on-chain._

**How is NF.TD different from other link in bios?**  
We allow you to easily prove your identity so others can know it's truly you they're interacting with online. This is especially important to combat bots, impersonations, and ever-advancing A.I.

**How exactly do the proofs work?**  
We accomplish this through a combination of:

*   public proofs _(public attestations, DNS records, and connected wallets)_
    
*   cryptographically signed messages _(secured by ECDSA, the same algorithm Ethereum uses)_
    

**How can I be sure that the proofs are valid?**  
Verified checkmarks only get added to links on NF.TD if we detect that a proof is, in fact, valid.

Every profile will have an audit trail (coming soon) so anyone can independently confirm the proofs are valid, and that they were signed by the owner of the wallet/NFTD username.

![](https://storage.googleapis.com/papyrus_images/db3938c167d1179ff08b16b97c5dc88f.png)

**What does an NF.TD URL look like?**  
NF.TD/username

**Can I mint more than one username?**  
You can mint 5 NF.TD usernames per wallet.

**How much does it cost to mint a username?**  
The mint price is 0.05 ETH for the first 2,500 (OG) usernames.

**What kind of usernames can I mint?**  
You can mint any username that is at least 3 alphanumeric characters long and at most 26 alphanumeric characters long.

**Can I sell or buy an NF.TD username on a secondary market?**  
You can sell or buy an NF.TD username on secondary marketplaces, just like other NFTs.

**What happens to my NF.TD profile once I sell that username?**  
You no longer have access to customize the profile for that NF.TD username and the profile itself will be wiped when the new owner/wallet connects

The new owner of that username will now be able to customize the profile.

**What are OG usernames?**  
OG usernames are the first 2,500 usernames minted on NF.TD. There will only ever be 2,500 OG usernames.

**What benefits do OG usernames get?**  
Verified “OG” mark, early access to test features, upcoming discounts & perks, & more.

**Can I sell or buy an OG username?**  
OG usernames can be bought or sold just like any other NF.TD username. The OG status stays with the OG username, even if it’s sold.

**What happens after all the OG usernames are minted?**  
Any usernames minted after the first 2,500 are regular usernames, and they function just like OG usernames (but without the OG perks & benefits).

**How can I read more about OG usernames?**  
You can read our FAQ on OG usernames [here](https://paragraph.xyz/@nftd/nftd-og-usernames).

**Is there an API?**  
NF.TD will have an API for developers (currently in closed beta) that will power trust & identity across other crypto apps and wallets.

Verify once, and bring your verified links & identity to your other profiles in web3.

**When can I mint a username?**  
The public launch date will be announced soon.

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*Originally published on [NF.TD](https://paragraph.com/@nftd/nftd-[faqs])*
