Trading Namecoin Crypto, NFTs & dot-bit addresses on Ethereum Virtual Machine (EVM) Networks

6 min readSep 29, 2021


This Guide is to show you how to trade Namecoin (NMC) Cryptocurrency, Non Fungible Tokens (NFTs) and dot-bit (.bit) Domain names on Ethereum, Polygon, BSC, xDai & Fantom. This will enable you to use those networks to trade on NFT marketplaces such as,,,, plus the upcoming NFT2NFT app.

Introducing Circuits of Value’s (COVAL) EmblemVault

Setting up NMC assets on Ethereum Virtual Machine Networks

Hopefully you have read the above, these will explain how to connect and show the different options (not included in this guide).

Go to and connect to your wallet.

Selecting what network you wish to create on, using Metamask

Click ‘Next’ to create Public Vault

Add a ‘Title’ and a ‘Description’ use SPACE SPACE RETURN to enter paragraphs, then Click ‘Next’

Click the box ‘Chose a File’, this is to display the image for the top NFT

Use the drop down menu to select ‘Image (upload)’

Choose an image file to to use as the top cover for the Emblemvault

You may further edit the image with the ‘Edit Image’ button.

With the appropriate Network Gas fee and 300 Coval for payment, click ‘DO IT!

Click on the Deposit Addresses ‘NMC’ to see the wallet address within.

Go to your Namecoin wallet of choice, in this case I am using Electrum-NMC, and transfer your Namecoin assets using the ‘Configure Name…’ option, placing in the NMC wallet address and clicking ‘OK’

Go back to the application and look at the balances, if it is blank click the ‘[Refresh Balances]’ area

Wait a few seconds or refresh the browser, until it appears.

Namecoin transfer could take up to 30 minutes

Verify on the NMC explorer the contents of the NMC address

The prices shown at the top of the Emblemvault are totaled real time prices of the crypto’s within, as multiple cryptos/chains & NFTs can be placed inside.

Trading on a EVM NFT Marketplace

The following marketplaces are available to trade Emblemvault;

Ethereum — Opensea

Polygon- Opensea, Venly

BSC — Fangible, Venly


Fantom — (coming soon)

This Emblemvault was created on Polygon, and the default setting on Eth and Poly shows a button to ‘View Vault on Opensea’ click it.

Initially if you go to Opensea, you may see your title with (Empty Vault) on it, this is to deter scammers trying to miss-lead buyers.

Clicking the ‘Refresh metadata’ button on Opensea with refresh from when you see the vault is filled with an internal address, wait a few moments and refresh the browser.

After refreshing the ‘(Empty Vault)’ will be removed and details shall be updated in the properties tab.

If you scroll down the description you will see the NMC address clicking it opens the NMC Explorer, the properties contains the NMC Assets, Boosts would contain any cryptocurrencies.

Click the ‘Sell’ button on Opensea, select the amount you with to trade for and ‘Complete listing’, if this is your first time you may have to sign a Metamask transaction to setup the initial smart contract.

Claiming an Emblemvault

Only claim the vault if you wish to have the NMC assets returned to their native wallets.

Click ‘Claim (Crack Open Vault)’ and sign the Metamask transaction.

Then click ‘Get Keys’ and sign the Metamask transaction.

If you see nothing, you may get this screen on Metamask, click where is says ‘Unapproved’ and approve the transaction.

The keys will then be revealed, each time you wish to view the keys, repeat the last procedure.

The NFT will be transferred to ‘0x0000000000000000000000000000000000000000’ as the last owner of the NFT you have sole rights to view the keys, the claimed NFT will always be available in your vault list —

Copy the NMC private key and go back to your Electrum-NMC wallet.

Transfer some NMC to the Vault address to gas the Namecoin assets out of the address.

Go to >File>New/Restore>Next> select ‘Standard wallet’>Next> select ‘Use a master key’>Next>paste the NMC Private key >Next>Next.

Select the ‘Manage Names’ tab, click ‘Configure Name…’ and enter the address you wish to transfer the assets to, repeat this for each item.

Next go to the ‘Send’ tab and enter the address you wish to send the Namecoin to, click ‘Max’ then ‘Send’ then ‘Yes’.

Namecoin Domain Specifications

i/namespace type images will appear as NFT images within

d/namespace domain will appear as dot-bit (.bit) images

d/Namespace (Capital lettering) Non-standard name will appear as

Namecoin renewal within Emblemvault

Namecoin assets are required to be renewed every 36000 blocks (~8 months) on the explorer page it will show you how long is left until renewal (also on Opensea properties).

When the countdown approaches 1000 blocks to when the expiry occurs, as long as there is at least 0.6+ Namecoin currency inside the vault, the vault will attempt to automatically renew the contents one at a time to the vault address, without claiming the contents.

There is also a button to renew manually is you dont wish to risk it.

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Circuits of Value Official Telegram room :

Circuits of Value web page :

EmblemVault application :