With multi-signature transactions you can add up to 3 different bitcoin addresses as recipients. In order to be able to spend the funds approval is required from a chosen number of those recipients.

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How to find the Bitcoin addresses used to create a Multi Signature address

Assume we have a 2 of 3 multi signature address and we send some bitcoin to that address. Then we spend the funds from that address by signing and broadcasting a transaction. Just by looking at that ...
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Multisignature Demographics

Has there been any demographic analysis of multisignature operations? If so, who's using them? Is it true that multisignature operations are limited mostly to exchanges?
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Multisig vs Multi input transaction signing

Let's say we have a 2 of 2 multisig address that we want to spend from, so the transaction should be signed by both of the private keys. Now let's say we have a transaction with two inputs, so once ...
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Bitcoin contracts with stickK.com functionality

Does a BTC service/application allow me to set a nTimeLock transaction that can be interrupted by a single predetermined 3rd party before the transaction has been made public? If a service like this ...
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96 views

How to find Z value of multisig transaction?

for example this transaction: http://2coin.org/txinfo.aspx?txid=6c3dc603da32bba3f56f2b33053aaf0f0f17322386c0c6846786bffe49f6ef22&cur=BTC Script not of right size to be a scriptSig, expecting 2 ...
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UPDATED: -25 when pushing multisig

I am trying to push this correctly signed 2/3 multisig to the network (based on Gavin's example) and I get RPC_VERIFY_ERROR = -25, //! General error during transaction or block submission: The ...
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What are the implications of Schnorr signatures?

Adam Back (adam3us) explained in March, 2014, but it is all math. There's another short post with advantages, though. This answer on crypto.SE claims that Bitcoin considered using Ed25519 which is ...
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75 views

Hybrid Bitcoin web wallet for performing multi-sig transaction on an e-commerce site

Two participants in a transaction, a buyer and a seller, need to interact financially. For security, they themselves keep their private keys and sign transactions on client using JS. I want to create ...
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59 views

Multisignature: what happens if the number of signatures exceeds the “threshold” number of public keys?

Let's say a coin has been locked with a 2-of-3 challenge script. In other words, spending the coin requires two signatures, each of which matches one of three designated public keys. Now I try to ...
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2answers
58 views

Are the keys in a multisig transaction output hashed?

Pay to public key hash scripts hash the recipients public key for added security. Is the same done with the public keys that make up part of a multisig script? https://en.bitcoin.it/wiki/Script ...
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79 views

How do I make a transaction [duplicate]

I want to make a multisig transaction but dont how to do it. I am using this site: coinb.in And what is Txin or N that it also can be called.
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110 views

Unspent outputs get spent automatically

After generating a 2-out-of-3 wallet (using brainwallet http://ms-brainwallet.org/#generator) I am able to store my private/public keys for each of the participants. Afterwards I send a small amount ...
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How do I find the txid and vout values for an input I want to spend?

I was in the http://coinb.in/multisig/#newTransaction and wanted to make a input but it needed 2 values. Txid, How do I get that? TxIn/vout, Whats that and how do I get that?
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1answer
100 views

Multisig created from Multisig address

Can a multisig address creation process use other multisig addresses as signers to result in a new multisig address Would this also result in a greater number of signers to be necessary to approve a ...
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1answer
100 views

how to get one address from two public keys?

Parsing an input script of a transaction, I’ve come across two public keys in the script. Either public key is 33 byte long. I know how to transform a single 33 byte long public into an address. ...
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1answer
50 views

Limit wallet to sending funds to a list of addresses

Imagine a scenario. There are 3 parties: Party A, Party B and a mediator party C. A and B transfer each 1 BTC to a newly created wallet W owned by C. The function of C is to distribute the entire 2 ...
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1answer
43 views

How to make a pay-to-rawmultisig transaction?

Using the default client's RPC calls, can I make a transaction that sends to a RAW multisig (not P2SH multisig) scriptPubKey? If I made a raw transaction, and edited the bytes in the scriptPubKey of ...
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119 views

What is the current status of Multi-Sign function in bitcoin network?

Are they convenient enough for some real world transactions? Like an easy escrow that the two party can assign to a third party to finish a transaction?
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1answer
53 views

Two out of Four transaction with excluding some key pairs

Is it in theory possible to set up a 2 out of 4 multi-sig transaction, but only allow a subset of all possible combinations? More concrete: I want to have the keys A, B, C, D. Alice controls A Bob ...
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71 views

bitcoind importaddress balance

I am trying to do some tests using multisig transactions without importing the private key in bitcoind (watch only addresses). Bitcoind runs in regtest mode. These are the steps I have done: ...
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3answers
196 views

How can an online wallet be more secure than paper wallets or cold storages?

Recently, after I was reading that some bitcoin early adopter lost 750 BTC due to theft from his macbook, I was looking for the most secure storage solution for my coins. I already know about paper ...
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Predict multi signature transaction size

I was looking for answer everywhere. Basically is there any way of calculate multi-sig transaction size when the transaction is creating, before the signing procedure? I was trying to find any pattern ...
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1answer
214 views

Are all private keys required to create a multisig bitcoin address

Do all 3 private keys in a 2-of-3 multisig wallet have to exist on the same device at some point in order to generate the bitcoin address? It would be ideal if the 3 private keys never existed on the ...
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1answer
73 views

What is the maximum number of multisigaddresses you can create? [duplicate]

I have created a few multisig addresses, and just tried to create a 2 of 3 address, but it returned with the 'AddCScript() failed' error. What is the maximum number of m-sig addresses and where is ...
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62 views

Find Multisig coins

How do you scan the UTXO set for multisig UTXOs that you have the keys to sign (or partially sign)? In other words, how do the wallets know they are part of a multisig transaction?
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109 views

In P2PKH Multisig Transactions, what is the address?

In P2SH transactions, the address is the hash of the redeemScript. What is it for P2PKH transactions?
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267 views

Multi-signature and “pay to script hash” vs “pay to pub key hash”

If I understand correctly, there are two methods to perform a multi-signature transactions in Bitcoin. One is "pay to pub key hash", which is a method commonly used to send standard single signature ...
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74 views

Multi-signature transactions: Address based? What is the limit?

As I understand them, multisig transactions are actually transactions from multisig addresses (addresses requiring n sigs). Is this correct? (in other words, "multi-sig transactions" == ...
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39 views

Pluggable Signers for Married Wallet

I would like to start a Wallet Protection Service, but simply add myself as a signatory to wallets using the Married Wallets standard. https://groups.google.com/forum/#!topic/bitcoinj/Uxl-z40OLuQ I ...
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112 views

Escrow outputs show incorrect destination addresses in Blockchain.info

I'm interested in the following multisig transaction 3a0c283c8574205c2cc95cea0e603bfff9087af2ab0360ebd2e98740a3193a18 If I query bitcoind for information about it using the following command ...
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1answer
69 views

How can my NXT client/server send to multiple addresses paying one 1 transaction fee?

I know bitcoind lets you have multiple outputs (sending to multiple address) via the command line. Does NXT support this feature? I want to create a faucet application where I can send to multiple ...
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2answers
216 views

Multisig doesn't work unless all keys were generated from the current wallet?

I tried to create a multisig in both the Bitcoin network and the Bitcoin testnet. It seems to work only when all public keys are from the current wallet. That means when I call listunspent after I ...
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366 views

How do I ensure that the multisig transaction that's signed by multiple parties is the same?

In multisig 2-3 escrow, what is best approach from below ? 1- Say I want to sign a rawtransaction from a customer and send it to escrow to sign so that 2 of 3 sigs are there to release fund. But how ...
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1answer
180 views

What cryptographic operations are performed on the 3 public keys to produce a multisig (2 of 3) address?

I'm just getting a handle on multisig, so sorry about that. I don't really get how, (what operations are performed) on the inputs (3 public keys, right?) to generate a multisig address. Or is it some ...
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1answer
50 views

Multisig with same keys

is it possible to make a multisig tx with the same keys ? For example, i got: Key A, Key B, Key C Now A should be able to spend the coins and also B with the help of C. (B and C alone should not be ...
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1answer
43 views

Limited, but not fixed multisignature transactions, is that possible?

Is it possible to have a multisignature transaction where N signatures are required and their inputs are limited in value, but not fixed? The use case would be for a pooled acquisition, where the ...
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What % of the network will mine multi-sig transactions where n > 3?

I'm trying to determine how likely it is for multi-sigs with n > 3 are to be mined. Whether this is a sub-set of miners (say 10%) or if you need to relay them to some specific nodes.
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62 views

Finding input TX for P2SH addresses

I am beginning to work with multi-sig transactions, I understand how they work and how to sign raw transactions but how do you go about A) listing the input transactions for this address using ...
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166 views

Howto partially sign a multisig rawtransaction with BitcoinJ?

I am trying to partially sign a 2of2 transaction which I created in bitcoind. Unfortunately I am not seeing a valid raw output after signing. The expected raw output is: ...
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signing colored assets to identify worthwhile assets

With colored coin and similar solutions, anyone can create an asset. Using counterparty as an example, this gets out of control very quickly with no way to determine "good" assets easily ...
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1answer
174 views

What is the right way to create a MultiSig?

After following https://github.com/wobine/blackboard101/blob/master/wbn_multisigs_pt2_spend-funds.py for creating a MultiSig, I end up with a Multisig address. On Validate Address it shows as valid ...
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1answer
374 views

How can I use multi signature addresses with Bitcoin Core?

Using the instructions on the debug window, I created a multi signature address as below: addmultisigaddress 2 "[\"Adres1\",\"Adres2\"]" MultiSigAddres My understanding is that one needs the ...
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Multisig transactions vs secret sharing

Some background here, I am implementing a wallet that enhances security by using smart cards. The card stores a pin protected key but unfortunately cannot do ECDSA signing. There is also a server ...
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Can a 2 of 3 multisig transaction signature be revoked before it gets confirmed by the miners?

The reason I'm asking is because I want to know if 2-of-3 can be used by two parties as a way for one party to pre-commit to purchasing something before they actually do. For example, suppose Alice is ...
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1answer
162 views

multisig without tying up funds

Is it possible to enable a 2 of 3 transaction without the escrow component defined as "nobody can run off with the funds but the funds have to exist" In a scenario where A wants to pay C and requires ...
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1answer
118 views

How prevalent are multisigs?

There seemed to be great demand for multi-siganture transactions to be provided, but they don't seem to be so popular now that they are available. What percentage of transactions are multisig since ...
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Decentralised escrow / distributed private key generation

Issue Hi As many others i am curious in addressing distributed escrow problem (not just for bitcoin). As it stands now there are no decentralised escrows. All escrow services are based on trust in ...
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What are the limits of m and n in m-of-n multisig addresses?

This method describes how to create a 2-of-3 multisig. I heard that there is an inherent limit with the number of multisig parts, limiting them to 3. Does the standard method described above of ...
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Can multiple people create one multisignature address, while keeping their private keys private?

Is it possible for person A, person B, and person C to create a multiple signature address without one person needing to initially know all three addresses to create that public address in the first ...
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375 views

Are multi-sig M-of-N transactions with N > 3 supported?

BIP 11 makes M-of-N multi-sig transactions standard --- for N <= 3. What is the current support among miners for the multi-sig transactions with N > 3? (say 3-of-6). Also, BIP 11 states: The ...