How to Withdraw Namecoin to Your Own Wallet

An exchange or swap balance is not a Namecoin name wallet. If you want to register or update a name — including a .bit domain — the Namecoin project says you need a wallet that supports name operations and some NMC in it. This post covers that next step: withdrawing NMC to a wallet you control, recognizing a Namecoin address, and understanding what NMC is for once it arrives.

If you still need to acquire NMC with Bitcoin, use our earlier guide, Buy Namecoin (NMC) with Bitcoin, and the live NMC/BTC market. This article does not repeat that buying walkthrough.

Start with an official name wallet

Namecoin’s name wallets guide lists two official options. Download them only from namecoin.org.

Namecoin Core is the full-node port of Bitcoin Core. It is reproducibly built, supports Tor, and includes a Qt interface and a command line. Use the Downloads page for the official build you install, and read what that page documents for that build; this article does not pin a current version number. The page has documented a currency wallet for receiving and sending NMC, command-line tools for registering, tracking, updating, and renewing names, a graphical interface that covers tracking, updating, and renewing, and new-name registration in the GUI directed to the command line or a separate Name Tab Beta build. Those name-operation details belong to the documented build, so confirm them on the page for the software you actually download. Because Core is a full node, the first synchronization can take a while.

Electrum-NMC is the lightweight Electrum port. It is not a full node, so it synchronizes faster and uses less disk, and the project describes that model as less secure than a fully validating node. The documentation notes that it is written in Python and is not reproducibly built. It describes a Buy Names tab for registration, a Manage Names tab for names you already own, and a DNS Builder for updating domain data without editing raw JSON. Downloads are linked from that documentation (Beta Downloads).

If you will hold coins or own names, the official FAQ says you need to back up the wallet, using the same kind of procedure as Bitcoin Core or Electrum. Lookup-only use, such as browsing .bit sites, does not by itself require a funded or backed-up currency wallet.

What a Namecoin address looks like

Before you paste anything into a withdrawal form, confirm that you copied a Namecoin receiving address from that wallet — not a Bitcoin address, and not an address for another coin.

The official FAQ, What do Namecoin addresses look like?, says Namecoin uses Bitcoin-like formats with different prefixes so the two networks are not ambiguous:

• Newer Bech32 addresses begin with nc1.
• Older P2SH addresses begin with 6.
• Still older P2PKH addresses begin with N or M.

Those prefixes identify a Namecoin address on the Namecoin network. They do not, by themselves, mean AltQuick accepts every format. Confirm that the withdrawal form — or the Swap destination field, if you use Swap — supports the address format your wallet generated. Do not assume every official prefix is accepted.

Those prefixes are also easy to miss if you only check the first and last few characters. The AltQuick FAQ says the site cannot help if you withdraw to the wrong address, and asks users to use extreme care. The withdrawal page also warns you to double-check the destination before submitting, because cryptocurrency transactions are irreversible. Copy the address from the wallet, paste it once, compare the full string, and confirm the form accepts that format before you submit.

Withdraw NMC from AltQuick

Namecoin is a listed asset on AltQuick. Immediately before you move coins, re-check the FAQ and the live system status page. Withdrawal availability, fees, and minimums can change; this post does not state a fee amount. Use the figures shown on those pages, and on the withdrawal form, at the time you withdraw.

For an AltQuick account:

1. Copy a receiving address from your official Namecoin wallet.
2. Sign in and open the withdrawal page.
3. Set the asset to Namecoin (NMC), paste the destination address, and enter an amount that still leaves room for the withdrawal fee and minimum shown on that form. Confirm that the form accepts the address format your wallet generated; do not assume every official Namecoin prefix is supported.
4. Compare the destination with the wallet one more time, then use Submit Withdrawal.
5. The same page’s withdrawal history includes a transaction ID (TxID). Confirm the result there and in your Namecoin wallet. If you use Namecoin Core, allow the node to finish synchronizing before you rely on the on-screen balance.

AltQuick Swap does not require an account. Per the FAQ, Swap uses AltQuick’s books and handles the withdrawal to a receiving address you enter. The same Namecoin address checks apply, including confirming that the destination field accepts the format your wallet generated. The FAQ also recommends providing an emergency address on the Swap form in case a trade cannot be completed.

A small test withdrawal before moving a larger balance is ordinary caution on a chain where a typo is irreversible. It is not a substitute for checking the address and the live fee.

What NMC is for once it is in your wallet

NMC is the currency that pays for creating and updating names. The Namecoin homepage describes a key/value registration system whose uses include .bit websites, human-meaningful names for Tor .onion services, attaching identity information such as GPG keys to a name you control, and decentralized TLS certificate validation.

A few official details matter before you spend coins on a registration:

• A .bit name lives in the d/ namespace: d/example is example.bit. Identity names use the id/ prefix. Namecoin itself does not enforce those prefixes; applications do. See the FAQ on namespaces.
• The Namecoin FAQ currently lists a 0.01 NMC network registration fee plus a miner transaction fee. The registration fee is destroyed; nobody receives it. The miner fee is set dynamically, as on Bitcoin. The project says the registration fee might be made dynamic later. See How much does it cost to register a domain?. This is a Namecoin network cost, not an AltQuick withdrawal fee.
• Registration is two steps: pre-registration (name_new) and registration (name_firstupdate), with a mandatory wait of 12 blocks between them. The first step publishes only a salted hash, which reduces frontrunning. Do not announce a name you intend to register until both steps have confirmed. See the FAQ on the pre-registration step and Should I tell anyone of my intent?.
• Names that are not renewed or updated for 31,968 blocks (about 222 days) semi-expire: they stop resolving, but you still own them. After another 4,032 blocks (about 28 days) they expire and can be registered by anyone. Renewals and updates do not currently charge a registration fee, but they do require a transaction fee. The FAQ says that renewal-fee policy might change later. See How long are names good for?.
• Values stored with a name are limited to 520 bytes. The FAQ says that using the chain as general-purpose file storage is not feasible.

Name operations are performed in a name wallet, not from an AltQuick balance. Withdraw first, then use Namecoin Core or Electrum-NMC as the project documents. For hosting records and TLS, start with the official Documentation for Name Owners. Browsing .bit sites is a separate job: the project points to ncdns and the browsing instructions. The FAQ also states that you should still use TLS (HTTPS) with .bit names; Namecoin does not remove that requirement.

A short checklist

• Wallet software came from namecoin.org, not a random mirror.
• You backed up the wallet if you will hold coins or names.
• The destination address was copied from that same Namecoin wallet, matches a Namecoin prefix described in the official FAQ (nc1, N, M, or 6), and the withdrawal form accepts that format. Do not assume every official prefix is supported.
• You confirmed on AltQuick’s system status that Namecoin withdrawals are available, and you used the fee and minimum shown on the withdrawal form or in the FAQ at withdrawal time.
• If you plan to register a name, you have enough NMC for the network registration fee currently listed in the Namecoin FAQ, plus miner fees, and you will finish both registration steps in your wallet — not on the exchange.

This is not investment, legal, or tax advice, and it is not a price forecast. Always read the live NMC/BTC book rather than assuming a fill.

FAQ

Can I register a .bit name from my AltQuick balance?
No. Name operations are performed in a name-capable wallet, not on the exchange. Withdraw NMC first, then use Namecoin Core or Electrum-NMC as the project documents.

How do I recognize a Namecoin address?
The official FAQ says newer Bech32 addresses begin with nc1, older P2SH addresses begin with 6, and still older P2PKH addresses begin with N or M. Those prefixes identify the Namecoin network; they do not establish that AltQuick accepts every format. Confirm that the withdrawal form supports the address format your wallet generated, and compare the full string before you withdraw. The AltQuick FAQ says the site cannot help if you withdraw to the wrong address.

Do I need Namecoin Core to receive a withdrawal?
No. Official name wallets are Namecoin Core and Electrum-NMC. Core is a full node; Electrum-NMC is lighter and, per the project, less secure than a fully validating node. For how new-name registration works in the graphical interface versus the command line, follow the documentation on the Downloads page for the Core build you install, rather than assuming every release has the same GUI.

Sources

1. Namecoin project homepage
2. Name wallets
3. Namecoin Downloads (official builds and documented name-operation support)
4. Electrum-NMC documentation
5. Namecoin FAQ — cost, expiration, address formats, namespaces, and pre-registration
6. How to get namecoins
7. Documentation for Name Owners
8. Browsing Dot-Bit Websites
9. AltQuick FAQ
10. AltQuick system status
11. AltQuick withdrawal page
12. AltQuick Namecoin asset page
13. AltQuick NMC/BTC market
14. AltQuick Swap
15. Existing AltQuick article: Buy Namecoin with Bitcoin

Image: Namecoin logo by the Namecoin Project, licensed under CC BY 4.0.