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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Setting up a multi signature bitcoin address with mycelium

I currently have a shared account with my dad with just a cloned copy of the private key and I would like to setup a multi-signature account with him. I'm trying to do this with Mycellium, but I can't ...
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Implementing Multi-Sig Escrow?

I want to start a BTC market. I understand all the ways to go about creating a site, it's just the payment implementation which confuses me. I want multi-sig transactions capable between my users on ...
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Could a Proof of Burn function be implemented into Bitcoin Core to help prove loss of private keys?

Is there a list of self reported BTC addresses with lost private keys? Of course such a list would never be conclusive as we would have to trust the people who report that the keys were lost. Could ...
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83 views

How can I send thousands of small amounts (10'000 sat.) to bitcoin wallets without paying to much fees?

I want to make a faucet. But my problem is that I don't know how I can make my payouts. I would have a lot of little amounts (like 10'000 satoshis) to pay. Is there an efficient way of doing thousands ...
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35 views

Manually crafted multisig Tx: non-mandatory-script-verify-flag

I'm trying to broadcast a manually crafted and signed transaction. As far as I can tell, the scripts are correct and the signatures pass BIP 66 validation. However, I keep getting: {'message': '64: ...
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43 views

OP_RETURN with Multisig

Let's say I have wallets A,B,C. A funds multisig address with B and C. B & C show keys, get input and spent it to OP_RETURN transactions. Is it possible?
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121 views

How is Bitcoin's Multi Signature different from NXT's account control feature for security?

Bitcoin's multi signature feature requires X number of people to sign a traction to secure your Bitcoins before it can be sent. Comparing this feature how is NXT's account control feature different? ...
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21 views

Multisig address with a specific required signature

Is it possible to create a multisig address such that it has 3 public keys attached, needs 2 signatures to create a transaction, but one of the signatures must be from a specific public key of the 3? ...
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72 views

Does a transaction with a lock time need more time to be confirmed?

I've made this transaction in the testnet: https://testnet.blockexplorer.com/tx/2f18c646a2b2ee8ee1f295bb5a0f5cc51c5e820a123a14b0c0e170f9777518bb It's a multisign tx with locktime. The locktime has ...
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82 views

Bitcoin multisig tutorial

I have five private keys (of type java.math.BigInteger) called a, b, c, d, e. Please provide some code template for the following. Create an address that has "3-out-of-5" spendability for the above ...
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70 views

How to create a partial signed multisig transaction with pybitcointools (Electrum)

Looking to create a partial signed transaction with pybitcointools that is recognized and accepted by Electrum GUI client. I have tried to do so for a 2 out of 2 multisig transactions, but so far ...
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49 views

Why do web wallets using multi-signature need 1 of N keys?

I've been researching multi-signature transactions and am wondering, as the title says, why a web wallet offering multi-signature transactions (2-of-3, for example) like blockchain.info would need any ...
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49 views

Using the bitcoind, can I query if funds have been sent to a multisig address?

I would like to query whether funds have been sent to a multi-sig address. Using the daemon: the address is valid, but listunspent and getreceivedbyaddress don't show the multisig address. I can see ...
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175 views

Creating a Bitcoin online wallet service

My question is this: Lets say I wanted to create a bitcoin site, where users register and can deposit bitcoins into their account. should i use my MPK to generate infinite addresses, so after a user ...
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120 views

Understanding basic Bitcoin Transactions: the scriptPubKey.addresses array

I used to think the addresses array into the scriptPubKey (vout) is populated starting from the script, but examining old-fashion multisig transactions, I discovered something made my assumption ...
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158 views

Using bitcore to create a transaction with two addresses and change address

I'm playing around with bitcore transactions and multi-sig transactions and was wondering how to send a transaction to more than one address, and keep the change. Currently when I try to send the ...
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92 views

Can anyone shed any light on this error? Bitcore Multisig - bad-txns-in-belowout

Code: var utxo = new bitcore.Transaction.UnspentOutput({ "txid" : "e0c6b736e86e8dccd63bbc27f35142b413bd991a410ef50f14cd56fa1a783a1e", "vout" : 0, "address" : ...
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113 views

How to pass parameters for multisignature addresses from Perl to the JSON::RPC::Client?

I'm trying to create a multisig address with JSON::RPC::Client but I don't know how to pass the parameters. I can pass simple params such as in validateaddress that requires only ...
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202 views

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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1answer
55 views

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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445 views

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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232 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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101 views

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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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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120 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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163 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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91 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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320 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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525 views

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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124 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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145 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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63 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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60 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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129 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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62 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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190 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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617 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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130 views

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
261 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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90 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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112 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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196 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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576 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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89 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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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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181 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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87 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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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 ...