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nanocurrency-web

nanocurrency-web is an open-source TypeScript library for building web and JavaScript mobile applications that handle Nano cryptocurrency on-device. It can generate and import HD and legacy wallets, derive accounts, sign send, receive and representative-change blocks, and verify signatures. The project describes an offline-oriented design in which users’ keys do not need to be sent to a server.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

nanocurrency-web — OpenViST project profile in Wallets.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when building a web or JavaScript mobile application that needs client-side Nano wallet handling or signing and can connect separately to Nano network operations.

Who it is for

  • Web developers integrating Nano wallet functions into an application.
  • Mobile developers using JavaScript frameworks to add client-side Nano wallet and signing functions.

Documented uses

  • Generate or import HD and legacy Nano wallets.
  • Derive accounts from wallet seeds.
  • Sign Nano send, receive, and representative-change blocks on-device.
  • Validate addresses and mnemonic words and verify signatures.
  • Connect signed blocks to a network publication flow handled by the application.
Before you choose

Requirements & limits

The repository is public and identifies the project as MIT-licensed.

  • The library supports HD wallets using BIP32/44 and BIP39, as well as legacy Nano wallets.
  • Signed blocks still need to be published to the network; the README points to Nano’s process RPC command.
  • Wallet generation requires secure randomness at runtime, or developer-provided custom entropy or a seed where applicable.
  • The repository warns not to use its example keys or addresses to send real assets.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Generate an HD Nano wallet in a JavaScript runtime

Generate an HD wallet and account using the toolkit's documented wallet API.

Before you start

  • nanocurrency-web is installed or loaded in a web page.
  • Secure randomness is available in the runtime, or custom entropy is supplied as a 64-character hexadecimal string (32 bytes).

Steps

  1. Import wallet from nanocurrency-web in a JavaScript module.

  2. Call wallet.generate(entropy?, password?), supplying custom entropy if secure randomness is unavailable.

  3. Keep the generated wallet data and keys on the user's device.

Expected outcome

The call generates a wallet with a mnemonic phrase, seed, and account; the toolkit is designed to sign blocks on-device without requiring keys to leave the device.

Guide limitations

  • If secure randomness is unavailable and custom entropy is not supplied, the call throws.
  • Losing a supplied seed password makes the mnemonic phrase void.
  • The README warns not to use its displayed example keys or addresses to send real assets; network publication is a separate stage.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
8 October 2026
Original website title
numsu/nanocurrency-web-js · Official homepage title · retained in its source language
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