Even if you are both the seller/buyer and the escrow - nothing you can do in case of 3-of-3 MultiSig escrow.

If you want a thing well done, do it yourself.

The truth is that the best escrow agent - is when there is no agent, and a user can use MultiSig.  

Видать всему виной религия, которая не позволяет использовать эскроу, или любимая поговорка: "Скупой платит дважды"...

To add a 2-of-3 MustiSig address to bitcoin core you will need to execute in client console the following command (in your example):


Result:


In order to spend the funds from the MultiSig address you will need to import 2 of 3 private keys that correspond to these public keys:

     Как проверить финальную транзакцию перед ее подписанием?

Чтобы проверить финальную транзакцию, в строке меню вашего кошелька выберите: Помощь -> Окно отладки -> Консоль -> введите "decoderawtransaction 01xxxНеподписаннаяТранзакция" -> нажмите "Enter".

Пример:

а) команда для подписания транзакции (без подписи):
Первая часть команды содержит неподписанную (или частично подписанную) транзакцию в бинарном формате.

б) decoderawtransaction 0100000001be57043303a208e728fba88a069e40a049e3ab3bf9234258676cde0f130a566b00000 00000ffffffff0100881300000000001976a914ab78c258721b4bb50e6e40d89f21270047239ea8 88ac00000000

результат:
{
"txid" : "2113941ac0b12e4017c916a70b5c7dd9178a3a0abbc5928ccf1c94ff9d9af33e",
"version" : 1,
"locktime" : 0,
"vin" : [
{
"txid" : "6b560a130fde6c67584223f93babe349a0409e068aa8fb28e708a203330457be",
"vout" : 0,
"scriptSig" : {
"asm" : "",
"hex" : ""
},
"sequence" : 4294967295
}
],
"vout" : [
{
"value" : 0.01280000,
"n" : 0,
"scriptPubKey" : {
"asm" : "OP_DUP OP_HASH160 ab78c258721b4bb50e6e40d89f21270047239ea8 OP_EQUALVERIFY OP_CHECKSIG",
"hex" : "76a914ab78c258721b4bb50e6e40d89f21270047239ea888ac",
"reqSigs" : 1,
"type" : "pubkeyhash",
"addresses" : [
"1GdfDJD2Rmo6PZAkWPWP99nLe6kv7vxD9s"
]
}
}
]
}

Согласно транзакции 0.01280000 BTC будут переведены на адрес 1GdfDJD2Rmo6PZAkWPWP99nLe6kv7vxD9s.

The buyer and the seller send funds to the MultiSig address at the same time and in the same transaction.
In most cases the seller is more reputable than the buyer and his reputation worth more than a single purchase... but it is doesn't matter, because the scheme is assumes that you will never put a desert eagle near your balls and will never shoot yourself in the foot.


There is nothing complicated for you as the MultiSig escrow agent, just to prepare the transaction, help verify and sign it, broadcast it to the network. All responsibility for any decisions lies on the buyer and the seller.

It is like in trading of cryptos, you will never lose until you sell cheaper than bought, even if the current asset price is lower than when you bought it.

The beauty of this scheme is that without your wish nobody can scam you, but the scammer will lose his own money. And only you, by your own hands, can return to the scammer his money plus give him your own. If you are considering such a possibility, just do it before the deal, you will win a lot оf free time.


Exactly! But it is not a problem, it is the foundation of the scheme, a good motivator for the both parties to be honest each with other.

All escrow agents were from this list and they were more reputable (according to the trust rating) than You:

  1. redsn0w https://bitcointalk.org/index.php?topic=768454.msg10010518#msg10010518.
  2. (or 4, and finally 5) master-P https://bitcointalk.org/index.php?topic=1306301.0.
~3. escrow.ms, possible as a consequence https://bitcointalk.org/index.php?topic=1359877.0.
  4. Maidak https://bitcointalk.org/index.php?topic=1077982.0.
  5. Same as 2.

P.S. Maybe I forgot somebody.
P.P.S. So, this "escrows list" is a bullshit, like as the forum "trust rating system".

Not necessary. All you need is just to proclaim in advance, that you will always punish the scammer, and be tough. I do not think that after that, you will find someone who will check you out... The scammers will always try to find a less risky options.

This is how psychology works.

DannyHamilton

Thank you for your post, it actually shows how much freedom gives this scheme to the escrow parties.

I:
Before to claim something we need to have irrefutable proof or to have a good reputation, otherwise our words will be empty.

You get to keep the product but lose twice as much as it costs.

II:
You will lose not only 1 BTC, but also your reputation (that was claimed above) which is usually worth more than a single purchase.


What is important:

1) no matter what I choose, it will be my decision (based on the truth), and only I will responsible for it;
2) in any possible scenario I will have a chance to punish the scammer.

Yes, but as you can see, the buyer is not interested do not release the funds, but the opposite, he is financially motivated to unlock them.

In a normal escrow scenario the escrow agent can: 1) make a mistake (a human factor), 2) be hacked, 3) be physically compromised, 4) scam the buyer and the seller (as it usually happens here) or 5) just simply disappear (for any reason)... So, what will you choose?

I mean the coins on the MultiSig address, where the buyer locks up twice as much as the seller. In case when the buyer refuses to release the funds, he gets the goods (1x) but loses twice more coins than this goods worth (2x), his profit is x-2x=-x - not the best situation to lay down the conditions... Yes, for the seller the situation is not better, but at least he will have the chance to punish the scammer and leave him without his money, and I am sure, after that, the buyer will never try to repeat this scenario.

I think the the buyer can refuse to release the funds only in one situation, if he is oligophrenic person with defective brain (like some subjects here) has a problem with logic, because in this situation he can lose twice more coins than the seller.

According to my scheme/scenario there is no third party, the address is created only from the buyer and the seller public keys, so it is 2-of-2 MultiSig. The buyer can not scam the seller because he locks up twice as much as the seller, so he is motivated to be honest.

I am not miswrote. There are a lot of examples here proved that a third party always will be the weak link in any deal. And some of you already can agree with it.


I'm always wonder how somebody still use the third party escrow in our community when the bitcoin protocol already gives more higher level of security than can give any trusted escrow. Very sad, that people can not understand, that more mature escrow service and longer history can not protect them from human error, hacking/physical compromising, from disappearing of the agent or the scam from his side...

Here is an example of the escrow scheme that motivates scammer to be honest to his trading partner:
1. The escrow agent creates a transaction, according to which the buyer collateral & the buyer payment for goods (2x) + the seller collateral (1x) will be sent to the created from their public keys MultiSig address.
2. The buyer and the seller checks and sign the transaction, the transaction is broadcasted to the network.
3. After the transaction is confirmed, the seller sends the goods to the buyer.
4. The buyer receives the goods and informs the escrow agent.
5. The escrow agent creates the transaction, according to which the seller will receive the seller collateral & the buyer payment for goods (2x) and the buyer will receive the buyer collateral (1x).
6. The seller and the buyer checks and sign the transaction, the transaction is broadcasted to the network.

Actually, this scheme will encourage both sides to be honest, and if something happens with the parcel to conduct a thorough investigation and find the consensus.

The best way to make the deal safe is to motivate both parties to be honest each with other and eliminate the third side that can make responsible decisions (such as escrow agent).

Before a purchase people look for the best seller with a good trading history. So the seller is risked not only 1 BTC, but also his reputation which worth more than a single purchase. Also, he can't know exactly what kind of buyer he will get, because when people are going to buy something they usually not spend the last money, and I'm sure, most of them, when got a chance, will prefer to punish the scammer and leave him without reputation and money.

Thank you for your reply, your opinion is appreciated.


You doesn't, if you are capable to perform such transaction (this will be great).


This scheme was modified, but I have not edited this post (done). Actually, step 2 and 3 was combined in one, so the buyer and seller funds are sent to the MultiSig address at the same time and in the same transaction.

This is much better than lose the funds (give them to scammer). If you need full protection here is the scheme.

If the seller and the escrow agent are the same person in 3-of-3 MultiSig transaction (buyer+seller+escrow agent keys), scammer will need the third (buyer) key to own the funds.