bitcoind – Was libbitcoin part of the Bitcoin core in the past?

I try to use it c++ Code from the book of Antonopoulos for some time and it seems to me include called bitcoin/bitcoin.hpp,

To compile the code, the g++ Compiler gets one pkg-config Input with libbitcoin, So I guess I would have to install this library.

Since the book mentioned nothing else than to install bitcoin core I'm really wondering if parts of libbitcoin were originally part of bitcoin core and were eventually excluded.

The other explanation would be that the author forgot to mention it. But it seems a bit overwhelmed that I need to install another complete system for a full node (libbitcoin) to run the code because the book explicitly states that a full node is running bitcoin core should be enough.

It's only incidental and probably ridiculous to a specialist, but I also learn how to use it pkg-config and the compiler this way.

There were suggestions to install only parts of libbitcoin but the developers said it was wise to install it with the automated install script.

Also there is libbitcoin-devThat's a package in debian (I start Raspbian Buster) but I could not compile the code with it.

bitcoin core – The target of a particular wallet when sending commands to bitcoind using RPC commands

I am very new to Bitcoin development and use the RPC API.

I have created a wallet with

{
    "method": "createwallet",
    "params": {
        "wallet_name": "/wallets/walletA"
    }
}

Now I want to get information about this wallet. I try to use that getwalletinfo Command.

However, you can not specify the wallet Surname/path when executing this command? You must first "load" the wallet (with loadwallet)?

This is the part that I do not understand. Suppose I made 10 wallets and tried to start one getwalletinfo Command in a multithreaded environment … How can I make sure I target the right wallet? Do I really have to send one? loadwallet Are you requesting to specify the wallet I would like to work on before receiving any information?

What happens if I want to get information about "walletA" for me to walk? loadwallet walletAbut before I can run getwalletinfo to get his information, a loadwallet walletB Request made?

Sharepoint Online / 365 integration (uploading files) in the React app, which is hosted on Azure and WebApi C # .Net Core 2.2

I've been having trouble interacting / automating a way to upload files from a Web application created in React and upload files to a Sharepoint online site in a particular folder for several weeks. The WebApp is hosted in Azure and uses a C # .Net Core 2.2 as the backend.

I'm trying to use a kind of REST API to help me with this task. (May be activated in the frontend or in C # Core or C # MS FW .Net for the backend.)
I'm looking for a way to do this on the internet, but all tests have failed.

Anyone can give me insights, tips or advice on how to do this?

I'm trying:

  • Use code from Microsoft WebPage (Using jQuery).

  • When using PnP, but on my local host, a CORS issue is displayed (I am trying to interact with the client ID and the secret ID with Sharepoint).

Primary composite key simultaneously alien to EF core Fluent Api

I need to create the following relationship: client table, project table, and client table project, where the client project contains the fields "client code" and "project code only". Where client code and project code are both primary keys and foreign keys:

Customer class:

 (Key)
        (StringLength(100))
        public string Codigo { get; set; }
        (Required)
        (StringLength(200))
        public string Descripcion { get; set; }
        (Required)
        public bool Estado { get; set; }

        (ForeignKey("Codigo"))
        public virtual ClienteProyecto ClienteProyecto { get; set; }

Project Class:

(Key)
        (StringLength(100))
        public string Codigo { get; set; }
        (Required)
        (StringLength(200))
        public string Descripcion { get; set; }
        (Required)
        public bool Estado { get; set; }

        (ForeignKey("Codigo"))
        public virtual ClienteProyecto ClienteProyecto { get; set; }

Project of the customer class:

 (StringLength(100))
        public string CodigoCliente { get; set; }
        (StringLength(100))
        public string CodigoProyecto { get; set; }

        public virtual ICollection MobileCliente { get; set; }

        public virtual ICollection MobileProyecto { get; set; }

The composite key has been declared in the main context as follows:

 modelBuilder.Entity()
                .HasKey(t => new { t.CodigoCliente, t.CodigoProyecto });

However, when I try to run the migration to create the tables first with code, I get the following error:

The relationship of & # 39; MobileCliente.ClienteProyecto & # 39; to & # 39; ClientProyecto.MobileClient & # 39; with foreign key properties {& # 39; code & # 39;
: string} can not target the primary key {& # 39; customer code & # 39 ;: string,
& # 39; project code & # 39 ;: string} as incompatible. Set up
Master key or a set of compatible foreign key properties
Relationship.

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Explanation of the script P2SH, how is Bitcoin Core executed?

This question is a continuation of my post yesterday.

Today I have a question about P2SH execution, so this should be an example of the script

OP_0   OP_2   
 OP_3 OP_CHECKMULTISIG
OP_HASH160  OP_EQUAL

or should the P2SH key be used this is (i think something in this script on the left to convert the hash160 within the P2SH key, right?)

OP_0   OP_2   
 OP_3 OP_CHECKMULTISIG
OP_HASH160  OP_EQUAL

Well, if I understood it well, the simulation of the execution is divided into two phases

  1. The hash scriptSig is equal to the hash within the scirptPubKey

simulation


  1. The script sing is executed like the script multi-signature

simulation

My questions are:

  • With the P2SH key is the execution the same? if so, in which other form is the P2SH with the P2SH key?

I also read this post, but I do not believe it contains that answer.

Unfortunately, if my sample script is wrong, I'll have to make a correction

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bitcoind – How to Separate the Wallet from the Bitcoin Core | Run multiple wallets on different servers on a single Bitcoin node

I'm using a Bitcoin full node on a central server. I have many web applications that run in different places. I want to connect these web applications to a central full bitcoin node. To install Wallet in these web application servers connected to a central Bitcoin full node. I would like to use the wallet to generate an address in these web application servers, perform transactions, and independently sign and send transactions to the application server. The application server must communicate with the wallet via rest apis. Finally, this scrapped transaction should be sent to a central Bitcoin full node. How do you do that?

c ++ – Is writing unit tests a good way to contribute to the Bitcoin core?

It can be difficult to jump straight to writing a unit test. I suggest you check out the official Github page on how to contribute to the Bitcoin core:

https://github.com/bitcoin/bitcoin/blob/master/CONTRIBUTING.md

If I wanted to contribute, I would personally try to solve some of the problems on the page with the problems, since it is fresh, a lot of work, some can be simple and getting help is needed:

https://github.com/bitcoin/bitcoin/issues