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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partial signature (of P2SH) in Bitcore. howto?

Using pybitcointools, it is easy get partial signatures of a p2sh using the multisign function. Then, these can be communicated around to the several controllers of the p2sh address. Using bitcore, I ...
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25 views

I'm trying to create a new kind of escrow with bitcoin, not sure if it's possible

First off, I understand that the standard way to do escrow with bitcoin is a P2SH with a 2 of 3 multisig redeem script. I'd like to try and do escrow in the following way: names of 3 parties involved:...
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1answer
19 views

with what number do multisig addresses (non-P2SH) start?

I have never seen a n-m address implemented as multisig (not P2SH). What number does it start with (i.e., regular addresses start with 1, p2sh start with 3 ...) ? In other words, where do they fit ...
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326 views

Could cryptocurrency “insurance” slow Bitcoin adoption?

Does the concept of cryptocurrency "insurance" undermine the purpose of "being your own bank"? Recently I have seen more Bitcoin related companies offer some sort of insurance for Bitcoins stored in ...
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2answers
40 views

Is there a multi Sig Explorer or Stats provider?

Is there a resource where I can get the past and current number of multi sig transactions, all types?
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1answer
69 views

How are Lightning network, duplex channels, and micropayment channels related?

I'm new to Bitcoin and just became familiar with Micropayment channels. But how exactly do they relate to: Lightning network Duplex Micropayment Channels ? I am reading about these but can't find ...
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4answers
68 views

In a multi-sig transaction, if one party refuses to sign, what happens to coins?

In a multi-sig transaction, if one party refuses to sign, what happens to coins? Are the coins forever lost, or is the transaction voided as if it never was attempted?
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1answer
25 views

Sharing the Master Keys in BIP32

What is the Best way to share the Master Public Key and Master Chain code generated using BIP32 in Bicoins with a user that I don't trust ? I just want the second user to monitor my wallet and not ...
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2answers
54 views

How multi-signature wallets comunicate with each other?

I wonder How multi-signature wallets comunicate with each other? My favorite is copay. How do they comunicate with each other before payment is done? How is privacy handled between each multi-sig ...
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2answers
44 views

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 Mycelium, but I can't ...
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50 views

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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2answers
57 views

Could a Proof of Burn function be implemented into Bitcoin Core to help prove loss of private keys? [closed]

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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103 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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2answers
61 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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1answer
52 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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1answer
130 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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1answer
28 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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1answer
83 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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95 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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87 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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1answer
53 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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0answers
51 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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1answer
183 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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2answers
134 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 wrong:...
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1answer
173 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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1answer
115 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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1answer
119 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 <bitcoinaddress>...
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2answers
217 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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2answers
474 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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0answers
53 views

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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1answer
248 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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1answer
102 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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3answers
1k views

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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1answer
193 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 ...
2
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1answer
121 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
173 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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1answer
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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348 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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641 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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1answer
129 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
146 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
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 ...
2
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1answer
61 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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2answers
132 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
64 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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197 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
705 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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137 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
264 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 ...