 Show Posts
|
|
Pages: [1]
|
|
Is there some means by which I could derive symmetric keys using bitcoin public keys or HD Wallet public key which I have shared with a second user.
|
|
|
|
|
Is it possible in bitcoin to start a smart contract preloaded with some amount of money. And if some other user is ready to pay to the smart contract a certain amount of money, the smart contract should release the preloaded amount of money in the smart contract to the user who paid to it ?
|
|
|
|
|
Is there some way in which User A who could load a transaction onto the block chain and if some other User B who is willing to pay User A, without User A being online could release the loaded transaction. Something like a smart contract ?
Lets say if A and B wants to exchange some bitcoin transactions between each other. But they both dont know each other before. A list his address some where and when B sees it, B will issue a bitcoin transaction to A.
A might not be online when B has issued this transaction. But B should receive back a transaction from A, if B has payed to A's address. How's it possible ?
|
|
|
|
How do I formulate a Transaction with OP_RETURN to a particular address using Bitcoinj library. SendRequest req;
Transaction transaction = new Transaction(Main.getNetWorkParameters());
transaction.addOutput(Coin.ZERO, ScriptBuilder.createOpReturnScript("thanks for the coins".toString().getBytes()));
//add a receiving address for this transaction
req = SendRequest.forTx(transaction); |
|
|
|
|
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 spend coins. What will be the best way to share my Master Keys ?
|
|
|
|
Is there some way in which I could get the public key of a Bitcoin user ? Lets say If I have transaction from a Bitcoin user. Is there some means by which I could get the public key of a particular Bitcoin address ? How does https://slock.it/ guys does it ? From where do they get the public key from ? https://www.youtube.com/watch?v=-Ht23KXic1k |
|
|
|
|
I have User A who generates BIP32 Master Public and Private Keys. It shares the Master Public Key with User B.
Using the Master Public Key User B generates Address of A and Issues bitcoins from Address of B to Address of A.
Will the transaction be received in wallet of User A, if User A knows the index used by User B. ?
The main idea is that User A don't want to share its receiving address with User B. Instead of that User A must find out itself from the Master Public Key.
|
|
|
|
I am trying to built an application that uses the BIP-32. But I am not sure on how to use it.
I have a passphrase with which I generate the Derived Private Key and Derived Public Key. If I share my Derived Public Key with a second wallet will the wallet be able to generate others Derived Public Key from it ? Is it possible ?
No, it is not possible. The second wallet would need to have either the master public key or the master private key in order to generate other addresses. Is there any issue in sharing my master public key with a second wallet ? That other wallet would be able to see every single transaction to and from your wallet. If you give this to another person, then you will lose any transaction privacy. Otherwise, there are no security issues with sharing the master public key. However, if you share the master public key AND a derived private key, then it is possible for that other person to be able to derive the master private key and thus potentially steal all of the Bitcoin. Is it possible to share my extended public key to an another wallet using the Bitcoin network ? |
|
|
|
I am trying to built an application that uses the BIP-32. But I am not sure on how to use it.
I have a passphrase with which I generate the Derived Private Key and Derived Public Key. If I share my Derived Public Key with a second wallet will the wallet be able to generate others Derived Public Key from it ? Is it possible ?
No, it is not possible. The second wallet would need to have either the master public key or the master private key in order to generate other addresses. Is there any issue in sharing my master public key with a second wallet ? |
|
|
|
|
I am trying to built an application that uses the BIP-32. But I am not sure on how to use it.
I have a passphrase with which I generate the Derived Private Key and Derived Public Key. If I share my Derived Public Key with a second wallet will the wallet be able to generate others Derived Public Key from it ? Is it possible ?
And since I have the original Derived Private Key with me, can I see what is happening in the second wallet ?
Also if I loose both the Derived Private Key and Derived Public Key, will I be able to recover my wallets using only the Passphrase ?
|
|
|
|
|
I am trying to develop an application using bitcoinj library. I want to get the bitcoin transaction details.
The details, that I want to extract from a transaction includes the following.
1) Who send me the transaction (Address and Public Key of the sender).
2) The amount that I received.
3) When was the transaction issued.
4) Get the data stored in the transaction in OP_RETURN.
|
|
|
|
|
I am running the bitcoinj wallettemplate on testnet3. I have this address miAKWcmebJ7TYyZCYUx54djHsatVGdNZA8 , I tried out some websites which sends me testnet coins (Faucet). But I am not receiving any. ? What I am I doing wrong ?
|
|
|
|
|
I am working with the testnet. I downloaded the bitcoin-core application on Linux and I am running the version Bitcoin Core version v0.12.1.0-g9779e1e (64-bit) I was able to download the bitcoin block, recently its no longer syncing with the bitcoin network. Its showing 3 days behind and 0 active connection to the bitcoin network. How can I fix the issue. I want to connect to the testnet. I tried to change the network settings in the application. Still its not working.
|
|
|
|
|
Thanks again for the detailed answer. I understand how it works now.
|
|
|
|
Thanks  |
|
|
|
|
I am quite new to Bitcoins. I have a doubt.
Lets say I person A, have 1 Bitcoin with me, I want to send .5 BTC to person B and .5 BTC to person C in a single transaction. Is it possible to do within one single transaction ?
Later on if Person C sends the same Bitcoin to Person B, will it be possible for person B to verify that, the Bitcoin which it now received from Person B and the one which it already received from Person A, were from the same source ?
|
|
|
|
|
