Metaco/NBitcoin

Jorn Vanloofsvelt

@JVanloofsvelt

Oh I see

Jorn Vanloofsvelt

@JVanloofsvelt

Did you want to make a Bitcoin wallet in wasm? @Kukks

Andrew Camilleri

@Kukks

Kind of, but also general Bitcoin tooling

Jorn Vanloofsvelt

@JVanloofsvelt

For fun, for profit?

Jorn Vanloofsvelt

@JVanloofsvelt

The slowest part of the Key derivation is the EC math:
var q = ECKey.CURVE.G.Multiply(parse256LL).Add(ECKey.GetPublicKeyParameters().Q);

Andrew Camilleri

@Kukks

Which lib is it using for that?

Jorn Vanloofsvelt

@JVanloofsvelt

Its the Bouncy Castle code

I guess it's mostly just a managed code implementation, not as optimized as native libraries

Jorn Vanloofsvelt

@JVanloofsvelt

It's the loop inside ImplShamirsTrickWNaf()

Jorn Vanloofsvelt

@JVanloofsvelt

best to wait for .NET 6 :)

Jorn Vanloofsvelt

@JVanloofsvelt

@NicolasDorier What's the state of QBitNinja and the indexer? Is it rather up to date, or in serious need of modernization/new development?

Documentation appears to be limited, if I'm not mistaken

Jorn Vanloofsvelt

@JVanloofsvelt

@Kukks Looks like I was able to improve it a lot

Jorn Vanloofsvelt

@JVanloofsvelt

What is the purpose of HDKeySets? I more or less understand how a HD wallet works, there is one root key-pair to derive from, but what's the purpose of the HDKeySet class that derives from multiple roots in parallel?

Oops, that should be a question for the QBitNinja channel :) I'm talking about this project: https://github.com/MetacoSA/QBitNinja/tree/master/QBitNinja

Jorn Vanloofsvelt

@JVanloofsvelt

Ah, I guess it's supposed to hold different public keys that make up a multi sig transaction

Milad Raeisi

@miladsoft

hi to all

Makwe Quintin

@QuintinMakwe

Good day everyone,
Happy to be here!!

Uhm I've read about HDwallets and understand to a great degree how it works. But ran into a couple of issues, I'd appreciate any suggestion from anyone, thanks in advance.

So the first problem I have is how to generate an xpubkey and xprivkey, I know I have to sum a privateKey and publicKey with a chain code and hash but really don't know how to go about this or know of a library in node or js that can help me. I'd appreciate a recommendation.

The second issue is a design a issue.

I'd love to observe all the public addresses in my wallet app from a single point which was why I chose to use HD wallets.

Now I'm confused as to how I should structure it, I have two implementation I'm considering.

First consideration
User A derivation path -> m/44/0/0/i and m/44/0/1/i
User B derivation path -> m/44/0/1/i and m/44/0/1/i

Second consideration
User A derivation path -> m/44/0/0/i and m/44/0/1/i
User B derivation path -> m/44/0/0/i and m/44/0/1/i

Andrew Camilleri

@Kukks

Hey all, just for your information, the main maintainer of NBitcoin is more often available over at https://chat.btcpayserver.org
We usually have a bridge connecting this chat over to a channel there but it is unreliable and often goes down. I would suggest you all transition there for faster help :)

Andres G. Aragoneses

@knocte

Kukks: would be great to have a mattermost instance that had channels for NBitcoin, BtcPayServer, Wasabi, etc

Andrew Camilleri

@Kukks

Kukks: would be great to have a mattermost instance that had channels for NBitcoin, BtcPayServer, Wasabi, etc

I agree, though we do use the https://chat.btcpayserver.org/ mattermost instance for everything (we have NBXplorer, NBitcoin, many btcpay channels, etc). A wasabi bridge would be nice but that's up to them :) ping @nopara73

Andres G. Aragoneses

@knocte

there's a wasabi mattermost?

I'd prefer just one instance, not bridges... I have already so many tabs in my browser

btw does mattermost offer an IRC bridge?

Andrew Camilleri

@Kukks

They still use the tumblebit slack :)

Yes, we've been using matterbridge and have had a btcpay mattermost <> freenode channel for a while

though it is not reliable as when channels that are mapped get deleted the bridge crashes and doesnt signal that it died

Andres G. Aragoneses

@knocte

so the freenode channel is only bridging btcPayServer room? how about the NBitcoin rooms et al?

Maedeh Zebhi

@maede71

hi
I created a transaction,
I have an error, when broadcast it in the blockcypher:

"StatusCode: BadRequest, Content-Type: application/json, Content-Length: 213)"
"{\"error\": \"Error validating transaction: Transaction 96ac292567476cfd7096b7cba634902031e5d60af9707732b4cdc3b63ecab549 orphaned, missing reference 00000000003767ab1d81bf5e85365b0664d98ca96c6887d27a1e19406a5dab21.\"}"
verified by the Nbitcoin:

 var feeRate = new FeeRate((long)32563);
 var transactionBuilder = txBuilder
                        .AddCoins(coins.Select(x => x.ToScriptCoin(secretKey.PubKey.WitHash.ScriptPubKey)).ToList())
                        .AddKeys(secretKey)
                        .Send(destination, vm.Amount.ToStringValue())
                        .SubtractFees()
                        .SetChange(secretKey.GetAddress(ScriptPubKeyType.SegwitP2SH))
                        .SendEstimatedFees(feeRate)
                        .Then();

  var tx = transactionBuilder.BuildTransaction(true);
  var fee = tx.GetFee(transactionBuilder.FindSpentCoins(tx));

    if (!txBuilder.Verify(tx))
    return new NBitcoinCreateTransactionResponse
      {
         Message = MessageResource.DontVerifyTx,
         Result = ResultType.Warning
      };

    BroadcastTransaction(tx);

Veria70

@Veria70

Hello

Everybody I need a help :)

I'm starter on NBitcoin :D i want to create Pubkey & WIF & Address From My own Private Key (not a generator) I know it's not common and safe for me but i want to use my own Crypto random generator, i create console application C# and take NBitcoin from nuget

Andres G. Aragoneses

@knocte

did you read the book?

Veria70

@Veria70

no :D

Key privateKey = new Key(); // generate a random private key

in the book

give me a link about my question pls

https://programmingblockchain.gitbook.io/programmingblockchain/bitcoin_transfer/private_key

var bitcoinPrivateKey = new BitcoinSecret("XXXXXXXXXXXXXXXXXXXXXXXXXX", Network.Main); is it my answer?

Andres G. Aragoneses

@knocte

looks like it

Veria70

@Veria70

but this class give me error "Invalid hash of the base 58 string"

MyPrivateKey is Byte[]
var Base58SecKey = Encoders.Base58.EncodeData(MyPrivateKey);

Key key = new Key();
key.FromBytes(MyPrivateKey);

pantonis

@pantonis

Hello guys.

Can I read and parse local copy of the block files using NBitcoin?

Manolo-Valdes

@Manolo-Valdes

hi guys. there is a way to submitBlock and others mining capabilities using NBitcoin Node class or any implementation in NbitCoin? thanks in advance

Manolo-Valdes

@Manolo-Valdes

hi guys. Does var txids = node.GetMempool(); works? I always got an error like node is not in connected state

            using (var node = Node.ConnectToLocal(Network.TestNet)) //Connect to the node
            {
                var txids = node.GetMempool();
                var txz = node.GetMempoolTransactions();
                Thread.Sleep(500); //Wait a bit
            }

thanks in advance

Prayank

@prayank23

listunspent 0 99999 "[\"tb1qy7vv88mc0nzz8cex0p2fd34v7506xuvmrm6r3f\"]"

This works in bitcoin-cli. What is the correct syntax to do this using NBitcoin?

var rpc = new RPCClient("user3:password3", "localhost:18444", Network.TestNet);
var response = rpc.SendCommand(RPCOperations.listunspent, 0, 0);

Not sure how should I mention the address. Gives error in everything I tried.

Where communities thrive

People

Repo info

Activity