<p>blocktrail has a 2of3 HD Multisig Wallet API, it's setup like: 
 - the 1st key being your primary key to use
 - the 2nd key being a backup key you store offline and 
 - the 3rd key being a cosign key owned by blocktrail</p>

<p>it only supports bitcoin and bitcoin testnet atm though ...</p>

<p><a href="https://www.blocktrail.com/api/docs#payments_overview" rel="nofollow">https://www.blocktrail.com/api/docs#payments_overview</a></p>

CC BY-SA 3.0
2015-01-28T16:23:39.437Z
2015-01-28T16:23:39.437Z
Ruben de Vries
<p>I know <a href="http://darkwallet.is" rel="nofollow">darkwallet.is</a> supports multisignature transactions and multi-sig wallets.  I haven't used them.</p>

CC BY-SA 3.0
2014-05-05T20:12:09.313Z
why the downvotes?
honi
CC BY-SA 3.0
2014-05-07T08:59:45.293Z
Just guessing here, but it might be due to the typo "darwallet.io", which should probably be [darkwallet.io](http://darkwallet.io). Also, link-only answers are considered very low quality.
Murch
CC BY-SA 3.0
2014-09-30T15:01:28.807Z
darkwallet.io doesn't even resolve for me, perhaps the link was supposed to be https://darkwallet.is?
DrAwesome
CC BY-SA 3.0
2014-05-05T04:36:54.620Z
2015-01-28T19:09:09.107Z
2015-01-28T19:09:09.107Z
honi
<p>The current multisig solutions are all quite awkward - they don't handle transmitting partially signed transactions too well. But you might want to read up on Armory: <a href="http://www.coindesk.com/armorys-lockbox-multisig-storage-escrow/" rel="nofollow">http://www.coindesk.com/armorys-lockbox-multisig-storage-escrow/</a></p>

<p>You could use <a href="http://orisi.org" rel="nofollow">Orisi oracles</a> for that. Every person "holding" a key would be running an oracle node, and funds would be stored and withdrawn by sending requests from the client. Orisi is now in Alpha, and it would probably a month of programming for one programmer to do it this way, but it's doable and you could probably recruit some help on <a href="http://orisi.net" rel="nofollow">the forum</a></p>

CC BY-SA 3.0
2014-07-31T15:51:26.667Z
2014-07-31T15:51:26.667Z
kolinko
<p>I am interested in using multisignature transactions to secure my company's coins and I'm wondering what tools are available right now for use with multisignature transactions? I'm especially interested in solutions that work on keys distributed between multiple wallets (no single wallet holds all the keys) and are not currency specific (would work just as well for Bitcoin as for Litecoin or other coins).</p>

<p>I know that the standard bitcoind API is lacking in multisignature support due to <a href="https://github.com/bitcoin/bitcoin/issues/3218" rel="nofollow">this bug</a>.</p>

CC BY-SA 3.0
2014-02-27T02:10:45.587Z
bitrated.com has a nice implementation of them.
user13413
<transactions><api><multi-signature><safety>
Resources for multisignature transactions?
ThePiachu
# Resources for multisignature transactions?

(Asked by: username_0 on 2014-02-26)

I am interested in using multisignature transactions to secure my company's coins and I'm wondering what tools are available right now for use with multisignature transactions? I'm especially interested in solutions that work on keys distributed between multiple wallets (no single wallet holds all the keys) and are not currency specific (would work just as well for Bitcoin as for Litecoin or other coins).

I know that the standard bitcoind API is lacking in multisignature support due to [this bug](https://github.com/bitcoin/bitcoin/issues/3218).

**Tags:** transactions, api, multi-signature, safety

> **Comments:**
> **username_1**: bitrated.com has a nice implementation of them.  

---

## 3 answers

### Answer by username_2 on 2015-01-28. Score: 1

blocktrail has a 2of3 HD Multisig Wallet API, it's setup like:
- the 1st key being your primary key to use
- the 2nd key being a backup key you store offline and
- the 3rd key being a cosign key owned by blocktrail

it only supports bitcoin and bitcoin testnet atm though ...

<https://www.blocktrail.com/api/docs#payments_overview>


---

### Answer by username_3 on 2014-05-05. Score: 0

I know [darkwallet.is](http://darkwallet.is) supports multisignature transactions and multi-sig wallets. I haven't used them.

> **Comments:**
> **username_3**: why the downvotes?  
> **username_4**: Just guessing here, but it might be due to the typo "darwallet.io", which should probably be [darkwallet.io](http://darkwallet.io). Also, link-only answers are considered very low quality.  
> **username_5**: darkwallet.io doesn't even resolve for me, perhaps the link was supposed to be https://darkwallet.is?  

---

### Answer by username_6 on 2014-07-31. Score: 0

The current multisig solutions are all quite awkward - they don't handle transmitting partially signed transactions too well. But you might want to read up on Armory: <http://www.coindesk.com/armorys-lockbox-multisig-storage-escrow/>

You could use [Orisi oracles](http://orisi.org) for that. Every person "holding" a key would be running an oracle node, and funds would be stored and withdrawn by sending requests from the client. Orisi is now in Alpha, and it would probably a month of programming for one programmer to do it this way, but it's doable and you could probably recruit some help on [the forum](http://orisi.net)


---

