TXID.IO Welcome to the Blockchain

Bitcoin(BTC), Bitcoin Cash(BCC/BCH)
and Bitcoin Gold(BTG) supported!

Be your own bank, take control of your own money and start using Bitcoin today!

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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!

Wallet

Quick access to an online wallet where only you have access to your own private keys!

Addresses

We support regular addresses but also multisig and stealth, and 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 (original Author) or github (txid.io).

Open Wallet browser based bitcoin 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 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.



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 Multisig 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.




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



Create a Double-spending Transaction

  • Unsigned double-spending transaction will generated at server side and returned back
  • Private Key will be never sent out from your computer, new transaction will be signed in your browser! (Open Source code)
  • You need to specify Private Key of any your Address from the previous still unconfirmed transaction, only this Input will be double-spent
  • If more than one Input with the same Address in the unconfirmed transaction - Input with the highest amount will be double-spent
  • All other Inputs (if any) will be recovered in your wallet when new double-spending transaction confirmed by network
  • You may doublespend each Input (if multiple Inputs) as new transaction or doublespend just any one Input Address
  • New transaction will be broadcasted to the BTC network (repeatedly until confirmed) via our own specially configured nodes (no 258: txn-mempool-conflict error)
  • Double-spending time can not be estimated but usually this is less than 24 hours
  • You will be able to verify New Transaction and check all Outputs and Amounts before Broadcast at Verify Tab (copy-paste it)
  • Bitcoin (BTC) is only supported for double-spending, no Bitcoin Cash, Gold or other bitcoin forks
  • This is not free-of-charge service!
  • Service fee BTC address will be automatically added to newly generated transaction
  • Service fee is 10% of Input Amount, but no less than 0.005 BTC (min) and no more than 0.05 BTC (max)
  • Update: 11.11.2017 - Minimal service fee lowered to 0.0001-0.004 for small transactions only. Do not forget to Verify before broadcast

Please specify your Private Key, previous still unconfirmed transaction TXID, New Output address (previous one is also allowed) and new Network Fee:

(used only within your browser, service will never send it out from your PC)





Submitting button below you request new double-spending transaction, it will not be broadcasted to the Network, you will have a chance to review this before broadcasting!



Development Javascript framework, API and more

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

About open source bitcoin wallet

Version 1.2

Compatible with bitcoin-qt

Github https://github.com/OutCast3k/coinbin/

TOR 4zpinp6gdkjfplhk.onion

What is Bitcoin?

Bitcoin is a type of digital currency in which encryption techniques are used to regulate the generation of units of currency and verify the transfer of funds, operating independently of a central bank. See weusecoins.com for more information.

Information

Coinb.in is a free and open source project released under the MIT license, originally by OutCast3k in 2013. Discussion of the project can be found at bitcointalk.org during its early testing stages when its primary focus was to develop a proof of concept multisig solution in javascript.

Coinb.in is run and funded by the generosity of others in terms of development and hosting.

Privacy

Coinb.in beleives strongly in privacy, not only do we support the use of TOR, the site does not collect and store IP or transaction data via our servers nor do we store your bitcoins private key. We do route traffic via cloudflare using an SSL certificate.

Donate

Please donate to 14PE1q2AyccwqvChumt8H6qGw5Asz17HJW if you found this project useful or want to see more features!

Settings

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. You can even download this page and host it yourself or run it offline!