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 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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16 views

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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22 views

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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101 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
70 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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61 views

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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116 views

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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1answer
100 views

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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165 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 ...
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39 views

Aborted escrow transaction

I know that multisig (n of i) transactions provide a decentralised escrow mechanism. Let's say we have a 2 of 3 address. What happens if funds are sent to the multi-sig address and say the seller is ...
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69 views

How do I create a multisig transaction based on hashes of secrets?

I'm looking for a way to create multisig transactions where each signing entity must reveal a secret in order to sign the transaction. Most importantly, once a transaction has been signed, there ...
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15 views

How is Transaction malleability affected by SIGHASH flags?

SIGHASH flags allow for the flexible alteration of a transaction. Given that there are legitimate usages of SIGHASH, and changing a Tx (and presumably the TxID as well), what is the correct way of ...
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25 views

Can I use RPC decoderawtransaction to get the JSON of BIP010 data?

I'm looking at the example BIP010 data output and am trying to implement this signing in C#. My goal is to find a way to use RPC commands to construct and validate TX data that would otherwise be in ...
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2answers
84 views

Is it possible to do a digital charge on delivery (COD)?

I'm exploring having a bitcoin (or any blockchain) backed a distributed secure messaging system. This is a peer to peer network that would pay for transport. In essence, it's the wild west, your key ...
2
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0answers
116 views

Resources for multisignature transactions?

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 ...
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1answer
155 views

Help understand multi-signature transactions

I'm not a technical guy by any means, and I'm having alot of difficulty understanding Multi-signature Transactions. Would an expert have time to try to "dumb down" the basics for me using some sort ...
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2answers
279 views

How can I avoid transaction malleability consequences?

Please note that this question is NOT a duplicate of other questions regarding transaction-malleability. My question is regarding a following scenario, that could happen on an exchange that uses ...
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87 views

signrawtransaction - Which private key from BitAddress.org?

I am trying to do multisignature addresses and when it comes time to spend the funds, I am getting stuck. If I create a 2 of 3 multisignature address using 3 public keys that I generate locally, then ...
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355 views

SignRawTransaction - What is scriptPubKey and redeemScript? [SOLVED]

Let me talk about how I got to the situation I'm in right now. I am using PHP and the JSON library to control bitcoind. And doing so..... I created a multisignature address requiring 2 of 3 ...
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118 views

What JSON RPC commands are suitable for a multi-tenant wallet service?

I'm looking at the JSON-RPC commands available in the QT client so I can create a multi-tenant wallet service on top of it. In other words, people would sign up for my site and have the ability to ...
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1answer
95 views

multisig tx 1 out of 2

Here is an example of multisig tx https://blockchain.info/tx/09dd94f2c85262173da87a745a459007bb1eed6eeb6bfa238a0cd91a16cf7790?show_adv=true the 3rd one output is 1 of 2 keys. So the question is ...
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1answer
145 views

Escrow multisig output tx

Can someone please explain the third (Escrow) output transaction listed here: https://blockchain.info/tx/09dd94f2c85262173da87a745a459007bb1eed6eeb6bfa238a0cd91a16cf7790?show_adv=true What the ...
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2answers
97 views

Transaction id from a multisig address

Suppose Alice sent some coins to a multisig address. Even if that address is assigned to my wallet I will not see the transaction as it doesn't really belong to me. That's fine, Bitcoin-Qt has no way ...
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199 views

Do multi-signature transactions make a 'bitcoin kickstarter' possible? And what state are the bitcoins in, in the meantime?

This isn't a question about kickstarter really, just a way for me to phrase my question about the crypto in terms that I can understand. My understanding, based on this article.. Stop Saying Bitcoin ...
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94 views

Is it possible to get the network to accept a partially signed multisig transaction?

I tried to send a half signed multisig transaction to the testnet but it got rejected. I think this is by design but has anyone some hard facts on this? EDIT: I think ...
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37 views

BIP0016 pay-to-scripthash transaction detection

BIP0016 acknowledges it works by "recognizing one 'special' form of scriptPubKey", so P2SH transactions are actually special cases. What are the exact rules to detect these special cases?
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BIP0016 pay-to-scripthash transaction validation

BIP0016 says "Validation fails if there are any operations other than "push data" operations in the scriptSig". What does it mean "push data operations"? OP_CHECKMULTISIG seems to be allowed but does ...
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1answer
115 views

Having trouble setting up the escrow function - returns transaction ID but doesn't get to blockchain?

Looking at both this example: https://earlytemple.com:8181/index.jsp and this example: https://gist.github.com/gavinandresen/3966071 I think I plowed through everything to the point where I was doing ...
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341 views

What happens to bitcoins in a multi-sig transaction if nobody signes?

If I transfer my coins using a multi-sig transaction, they will leave my account, but where are they until the other parties sign and they go to the recipient? If nobody signs, do they come back to ...
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1answer
131 views

Decoded transaction hex without enough signatures?

Can someone show me the output of decoderawtransaction when the transaction requires multiple signatures, but it hasn't been signed by enough people, and the transaction was created using ...
3
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1answer
226 views

Is a multisignature transaction propagated through the Network before it accumulates enough signatures?

An N-of-M multisignature Transaction requires to be signed by N addresses to be a valid transaction. I would like to know whether the Bitcoin Protocol would transmit a Transaction with less than N ...
2
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1answer
204 views

Double-signature paper wallets?

I believe it's possible to send money to an address that requires two signatures to spend. But I am trying to figure out how this can be done with paper wallets. My understanding of multi-signature ...
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162 views

How exactly does BIP11 work, and how can it be used, particularly with/without P2SH?

I'm trying to write a BIP11-compliant C# client that creates a 2 of 2 or 2 of 3 transaction. I'm also trying to understand if a 3 of 3 transaction is supported as well. This example says they are ...
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2answers
2k views

How do I use Multisig transactions to handle escrow needs?

I want to do a private escrow between me and someone else for a Bitcoin miner, and it will take weeks or months for that miner to arrive. I think multisig is an easy trust-free way to accommodate ...
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1answer
619 views

How should I safely buy/sell a preorder for Bitcoin mining equipment?

Suppose I need to buy/sell a preorder for Bitcoin mining equipment. What is the safest approach (for both the buyer and seller) to conduct this transaction? Does it matter if this transaction is ...
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4answers
668 views

What are the different prefixes of Bitcoin addresses?

Until today, I thought all addresses must start with 1. Well, behold 3M8XGFBKwkf7miBzpkU3x2DoWwAVrD1mhk, which is a multi-sig escrow address created to hold the bounty for the development of ...
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194 views

How can I execute a 3-way escrow with 1 unknown party?

Good Evening- I'm trying to execute an unusual 3-way transaction, where in one of the parties is not known at the start. PartyA would initiate the transaction, and provide funding. My thought was ...
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49 views

How can I add recipient on bitcoind CLI

I know I can add recipients to a transaction on bitcoin-qt and I am looking for a similar way to do it on bitcoind CLI on linux and in bash script. I tried using createrawtransaction and multi-sig ...
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520 views

Bitcoin API - createmultisig - what is redeemScript?

The Bitcoin API call of createmultisig returns two parameters - address and redeemScript. What is the latter used for?
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86 views

Is there a hardware wallet project that plans to add multisig capabilities?

What I want: A hardware wallet that I don't need to trust. That wallet will hold one out of three keys in a 2-of-3 multisig scheme. The other two parties will be a paper wallet I create, and a ...
4
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2answers
630 views

Do some Bitcoin wallets fail to support sending to multi-signature addresses?

The Satoshi client has support for multi-signature transactions through the JSON-RPC API since version 0.6.1rc2. My understanding is that a multi-signature transaction creates an address which is ...
6
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3answers
723 views

What clients support escrow transactions apart from Blockchain's MyWallet?

By escrow transactions I mean basic 2 of 3 multi-signature transaction like here https://blockchain.info/wallet/escrow Are there any other bitocoin clients where I can do this?
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80 views

How do I use multisig transactions? [duplicate]

I want to create an joint "address", made of 3 individual ordinary addresses, such that any combination of 2 addresses can move the bitcoins stored at the joint address. What is the way to do this ...
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1answer
436 views

Which address gets the money from the multisig transactions? (and multisig in general)

I am playing with the blockchain and I saw this transaction there https://blockchain.info/tx/60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1 the output from decoderawtransaction by ...
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0answers
125 views

How do I implement a blind multisig protocol?

I'd like to implement a 2-of-3 multisig protocol such that: Three parties generate private keys The private keys are never physically combined on one system - each private key never leaves its ...
5
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1answer
191 views

Mediated transfer of funds between three parties

Alice wants Bob to transfer 10btc to Carol, and is willing to pay Bob 11btc for the transfer. They both entrust Trent to mediate the transaction, and Alice is willing to pay Trent 1btc as commission. ...
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1answer
366 views

How much escrow/ Multi-signature transactions are done?

I have read here about the possibility of Multi-signature transactions. Is there a statistic available how much of these are done?
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2answers
238 views

How can I cancel and replace a Transaction that never gets confirmed?

According this this WikiPage, a MultiSigTransaction that doesn't include a fee may never get included in a block. Since I've read that replacing Transactions (by version number or any other feature) ...
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1answer
371 views

What is “Key Splitting”? When would I use it?

Here is some github code to create split keys. Is Key Splitting the same as Multi Sig? What are the benefits of Key Splitting, what's it used for? How does it relate to P2SH or any other relevant ...
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1answer
2k views

How is a Transaction ID generated & when does it change? (with a new sequence ID?)

I'm creating a non-mainstream client that processes and validates Bitcoin transactions and need to track transactions in my database. How is the TxID generated and when does it change? ...