Welcome to the Blockchain

Composable Blockchain Solutions

With Komodo, you can deploy a composable Smart Chain in minutes with seamless interoperability, atomic swaps, and Turing-complete business logic.

Komodo’s Antara Framework is an adaptable framework for simple, end-to-end blockchain development. Antara makes it easier than ever before to launch a chain, activate modules, and start building blockchain-based applications.

Smart Chains are compatible with Komodo’s cross-chain atomic swap technology. Next-generation wallets, such as Komodo’s AtomicDEX application, allow users to trade assets wallet-to-wallet without any middlemen or third-parties.

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  • This tool is a fork of OutCast3k/coinbin modified to use with Komodo (KMD) and kmdexplorer.io API.
  • It is still experimental and a work-in-progress. Use at your own risk without warranty of any kind!

Open Source

Coinbin is an open source web based wallet written in javascript and released under the MIT license which means it's free to use and edit.

MultiSig

We offer a fully transparent multisig solution which works seamlessly offline and with other bitcoin clients.

Raw Transactions

Create, verify, sign and broadcast custom raw transactions online with advanced features and minimal effort!

Addresses

We support regular addresses, multisig and stealth all with access to your own private keys!

Development

Use what we've built to write your own projects! See our documention (coming soon), or contribute at github.

Open Wallet browser based komodo wallet

New Address create a new address

Any keys used you will need to manually store safely as they will be needed later to redeem the bitcoins.

Address Options

You can use the advanced options below to generate different kind of keys and addresses.


New SegWit Address Smaller & Faster Transactions

Any keys used you will need to manually store safely as they will be needed later to redeem the bitcoins.

Address Options

You can use the advanced options below to generate different kind of keys and addresses.


New Multisig Address Secure multisig address

Public keys can be generated in your browser or from your bitcoin client.

Enter the public keys of all the participants, to create a multi signature address. Maximum of 15 allowed. Compressed and uncompressed public keys are accepted.

Need a Mediator?



Enter the amount of signatures required to release the coins



New Time Locked Address Coins can be released only after a certain date

Use OP_CHECKLOCKTIMEVERIFY (OP_HODL) to create a time locked address where the funds are unspendable until a set date and time has passed.

Public keys can be generated in your browser or from your bitcoin client.

Enter the public key that will be able to unlock the funds after the a certain date.

Enter the or required to release the coins:



New HD Address making bip32 even easier

Use the form below to generate a master hierarchical deterministic address.

Address Options

You can use the advanced options below to generate different kinds of master addresses.

Transaction Create a new transaction

Use this page to create a raw transaction

Address, WIF key or Redeem Script:

Advanced Options

Donate!

Enter the address and amount you wish to make a payment to.

Enter the details of inputs you wish to spend.




Bitcoin Fee Calculator

This page will give you a guide on the lowest fee to use to get your transaction included within the next few blocks. It works by predicting the size of a transaction and comparing it to another transaction in a recent block to determine an appropriate fee.

Recommended Fee: 0.00000000 KMD
for a transaction of 0 bytes

? Sat/Byte
0
Inputs

0 Bytes

Regular Compressed 1 148 bytes

SegWit 0 0 bytes

MultiSig 0 0 bytes

Hodl Time Locked 0 0 bytes

Unknown 0 0 bytes


0
Outputs

0 Bytes

Regular p2pkh (1...) 2 68 bytes

Regular p2sh (3...) 0 0 bytes



Chargable Transaction Size: 0 bytes

Blockchain Data

This is based on us comparing your transaction against a very recent transaction found in a very recent block

Block Height: ?

Block #: ?

Block Time: ?

Transaction ID: ?

Transaction Size: 0 bytes

Transaction Fee: 0.00000000

Satoshi per Byte: 0

Based on your data and this recently mined transaction we recommend a fee of 0.00000000 KMD to get it into the next few blocks


Advanced Options & Raw Transaction

Verify transactions and other scripts

Enter the raw transaction, redeem script, pubkey, hd address or wif key to convert it into a readable format that can be verified manually.



Sign Transaction once a transaction has been verified

Once you have verified a transaction you can sign and then broadcast it into the network.



Advanced Options

Broadcast Transaction into the bitcoin network

Enter your hex encoded bitcoin transaction



Development Javascript framework, API and more

This section is currently under development and is subject to change.

About open source komodo tool

  • This tool and site is a fork of OutCast3k/coinbin project with added KMD (Komodo) support.
  • Added Insight based explorer API integration for load UTXOs for create and sign transactions.
  • Signing transactions don't work offline! Bcz since KMD had sapling activated to sign arbitrary raw tx app need to know not only txid and vout num of each vin, but also exact amount and few other info, which can be obtained from blockchain. Online connection to explorer API used only during signing txes to obtain vins info, all other features can be used offline. For more information about Transaction Signature Verification for Sapling plz refer to ZIP-243 document.
  • KomodoPlatform and Komodo Team are not related to this wallet. It's 3rd party developement.
  • Sources of this project are available on GitHub in komodo branch.
  • Please, remember that some things can be buggy, so don't use this tool with addresses having more coins than you can allow yourself to lose!
  • Address for KMD donate: RTCVGuoSNehKG8YYxcoskC7LK1yZhgvQRV

Settings making coinb.in even better!

These simple settings below make coinb.in one of the most decentralized wallets in the world.

Network:

Select which network you'd like to use for key pair generation.

Broadcast:

Select the network you wish to broadcast the transaction via

Unspent outputs:

Select the network you wish to retreive your unspent inputs from



This page uses javascript to generate your addresses and sign your transactions within your browser, this means we never receive your private keys, this can be independently verified by reviewing the source code on github.