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Coinbin

Coinbin is a browser-based, open-source cryptocurrency wallet for creating addresses and keys, preparing and signing transactions offline, and broadcasting transactions. It supports Bitcoin and lists Litecoin support.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

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

Practical overview

When it fits

Use Coinbin when you need browser-based address and key creation, offline transaction preparation or signing, or transaction utilities such as decoding, fee estimation and replace-by-fee rebuilding.

Who it is for

  • Bitcoin users who need to create wallet addresses or keys in a browser.
  • Users preparing transactions for offline signing and later broadcasting.
  • People working with multisignature, HD, SegWit or Bech32 wallet features.

Documented uses

  • Create compressed or uncompressed addresses and regenerate keys in the browser.
  • Build custom transactions offline, sign them offline and broadcast them.
  • Create multisignature addresses and decode transactions or redeem scripts.
  • Estimate fees, add OP_RETURN data, or rebuild transactions for replace-by-fee.
Before you choose

Requirements & limits

Coinbin is documented as a browser-based wallet with a live web version. The public GitHub repository identifies the project as open source under the MIT license.

  • Coinbin documents offline transaction construction and signing separately from transaction broadcasting.
  • The README lists Bitcoin and Litecoin support, with features such as SegWit, Bech32, multisignature and replace-by-fee.
  • The repository identifies JavaScript as the primary language and specifies the MIT license.

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

Create an offline Bitcoin address

Create a Bitcoin address and its keys using Coinbin’s offline address-creation feature.

Before you start

  • Access to Coinbin in a browser.

Steps

  1. Open Coinbin.

  2. Use its offline address-creation feature to create a compressed or uncompressed address.

  3. Keep the generated keys available for the intended wallet use.

Expected outcome

A Bitcoin address is created with keys available.

Guide limitations

  • The available documentation does not specify exact interface controls or how to secure the generated keys.
  • Coinbin’s guide describes the tool as intended for advanced users and advises caution.
Documentation 1 ↗Documentation 2 ↗
Source-based practical guide

Build and sign a Bitcoin transaction offline

Create and sign a custom transaction offline, before using Coinbin’s broadcast stage.

Before you start

  • Access to Coinbin in a browser.
  • Transaction details needed to build the custom transaction.

Steps

  1. Build a custom transaction offline in Coinbin.

  2. Sign the transaction offline.

  3. Continue to Coinbin’s separate Broadcast stage when ready to broadcast.

Expected outcome

A signed transaction is prepared for broadcasting.

Guide limitations

  • The documentation does not provide transaction-field instructions or specify how to transmit the signed transaction to the broadcast stage.
  • Broadcasting sends the transaction to the Bitcoin network; signing alone does not broadcast it.
  • Coinbin’s guide describes the tool as intended for advanced users and advises caution.
Documentation 1 ↗Documentation 2 ↗
Evidence and transparency

Sources & review

Official repository ↗Guide documentation ↗
Source record details
Source availability
Active
Sources checked
16 October 2026
Original website title
OutCast3k/coinbin · Official homepage title · retained in its source language
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