Full-node Defcoin wallet with local network tools, paper wallets, recovery workflows, peer diagnostics, and modern wallet management.
Download v26.6.8-alpha · Build from source · Technical guide · Architecture · Release notes
Defcoin is a Scrypt proof-of-work cryptocurrency with a long-running independent chain. Defcoin Core Nu is the current desktop full-node wallet for holding DFC, sending and receiving payments, managing local wallets, inspecting peers, and participating in the Defcoin network.
26.6.8-alpha, codename Core Memories, is the current public alpha release.
The current Tahoe / Apple Silicon candidate is 26.6.8l-alpha. It preserves
Defcoin's historical chain rules and wallet data while adding a modern Qt Quick
desktop experience for macOS Apple Silicon and Windows 11.
Download packages from Defcoin Core Nu v26.6.8-alpha.
| Platform | Package |
|---|---|
| macOS Apple Silicon / Tahoe | Nu DMG |
| OS X Lion 10.7 | Nu DMG |
| Windows 11 x86_64 | Nu Installer |
| Windows 11 x86_64 | Nu Portable ZIP |
| Verification | SHA256SUMS.txt |
This is an alpha prerelease. The macOS Apple Silicon DMGs are ad-hoc signed and not notarized; Windows packages are not Authenticode-signed. Back up wallets before testing new builds, especially when opening older wallet files.
After installing, start Nu, allow it to connect to peers, and let the node sync before relying on balances or recent transactions.
- A Qt Quick desktop shell for Home, Send, Receive, Transactions, Wallet, Mining, RPC Console, Metrics, and Settings.
- Managed local
defcoindstartup for packaged desktop builds, plus a bundleddefcoin-clifor advanced local support and RPC diagnostics. - Wallets management with legacy Berkeley DB wallets and modern SQL descriptor wallets shown side by side, including active wallet totals, transaction counts, address counts, non-zero address counts, backups, encryption, and wallet close/open actions.
- BIP39 recovery phrase creation and restore workflows, optional SQL descriptor recovery, passphrase quality feedback, passphrase visibility controls, and zero-balance scan options for slower but cleaner recovery imports.
- Paper Wallet generation with local key/address derivation, BIP38 passphrase handling, print and preview controls, entropy safeguards, and the release-gated Design 1 output.
- Send-path hardening for depleted keypool/change-address errors: Nu can refill the keypool and retry when the backend reports that a change address cannot be generated.
- Peer and network diagnostics with observed magic bytes, protocol version, services, User-Agent, seed-source attribution, DNS names, IPv6 display, traffic metrics, peer inspection, selectable/copyable inspection text, bans, and Trippy route tracing when available.
- A restored Debug Log surface under the RPC Console area with line-numbered log inspection alongside the RPC command console.
- Block explorer presets for Defcoin services, including transaction and address URL templates.
- Local mining setup and monitoring helpers that let users select an external miner executable rather than bundling mining code inside the wallet.
- Defcoin network migration support: upgraded peers use
defc014e; compatibility mode can still accept legacyfbc0b6dbbefore defcoin-only enforcement. - Defcoin User-Agent filtering using the
/Defcoinprefix rule to reduce Litecoin-family peer pollution. - Receive request history, PSBT handling, message signing guidance, wallet backup, encryption, and passphrase flows.
Wallets management with wallet stats, encryption, backups, watch-only tooling, and scroll-visible wallet tables.
Peer diagnostics layout with columns for seed-source attribution, DNS names, observed magic bytes, services, FastSync availability, and latency.
Defcoin Core Nu About and splash graphic with the current Nu identity.
| Item | Value |
|---|---|
| Proof of work | Scrypt |
| Target block time | 2 minutes |
| Mainnet P2P/RPC ports | 1337 / 9332 |
| Mainnet Defcoin magic | de fc 01 4e (defc014e) |
| Mainnet legacy magic | fb c0 b6 db (fbc0b6db) |
| Defcoin-only magic enforcement | August 1, 2026 |
| Config file | defcoin.conf |
| macOS data directory | ~/Library/Application Support/Defcoin/ |
More detailed chain, seed, wallet, and compatibility notes are in the Defcoin Core Nu Technical Guide.
👉 Defcoin Core Nu Architecture & Upstream Litecoin v0.21.5.5 Comparison
Start with a fresh clone:
git clone https://github.com/defcoincore/Defcoin-Core-Nu.git
cd Defcoin-Core-Nu
cd source
The buildable Litecoin-derived source tree is intentionally kept under
source/ so the GitHub root can work as a clean product landing page.
Platform prerequisites are documented here:
Release artifacts are attached to GitHub Releases rather than committed to source history.
Defcoin Core Nu preserves Defcoin's historical mainnet behavior first. It keeps legacy Base58 wallet compatibility and does not treat newer Litecoin mainnet deployments as active Defcoin mainnet consensus features unless they are explicitly part of Defcoin.
Back up old wallets before testing them with new software.
Defcoin Core Nu code is released under the MIT license inherited from Litecoin Core and Bitcoin Core. See COPYING.
Trademark rights and coin artwork permissions are separate from the software license. See license and attribution notices.
Copyright (C) 2014-2026 The Defcoin Core developers.
Defcoin Core is derived from Litecoin Core and Bitcoin Core. Portions remain credited to The Litecoin Core developers and The Bitcoin Core developers.