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I want to make a system for sending, receiving and swapping cryptocurrencies. So, I need to set up a wallet on AWS Linux server which supports most coins and provides an API to connect to. It should allow sending coins and providing addresses.
What should I do for this?
Cryptocurrency wallets, by definition, should not use API as they are self-custodial. This mean that only you as an owner can initiate the transfer of assets. Having an API service for a cryptocurrency wallet is unsafe, because the sysadmin of the API service can steal your funds.
I'd recommend you use a command line tool or a programmable library like Web3.js Web3.py for wallet management.
That being said, there are commercial custody service providers like BitGo that provide cryptocurrency wallets with API.
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I am interested in building decentralized apps on ethereum and am wondering about the common libraries being used. For example, I've heard of whisper and swarm but the tutorial I got them from was over three years old and I'm just wondering if anyone knows what are some common libraries for basic and advanced functionality. Thanks!
Note that when you build a DApp (decentralised application) your fronted directly interacts with the blockchain. There is no server. Thus, you rarely build DApp with any of backend programming language like Python, Java, PHP or C#.
The popular Ethereum JavaScript SDKs include
Hardhat
Truffle
Client-side frontend libraries are
Web3.js
Ethers.js
Python, commonly used in data science and analytics, has:
Brownie
Web3.py
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I'm running a private blockchain and I've been using Metamask connected to my custom RPC URL with no issues.. I'm curious if there's any other Ethereum wallet that let's you add and connect to a custom RPC URL.
Currently there are not that many wallets that allow to connect to random networks. MetaMask tends to be the only one.
Your best bet is to try here https://walletconnect.org/wallets - also some of the wallets are open source, so you can add this custom functionality to these wallets yourself.
I noticed when I opened Alphawallet iOS app, in the last month that a new Custom RPC function was available in the settings section.
I basically went to Settings, Active Networks, there's now a (+) button where I could insert the url for a custom rpc I was testing for interoperability of my token contracts on different networks (eth and polygon and the custom url). So you could try them? Not sure about private blockchains though.
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I want to get all skin names for CS:GO. But I can't find API for use market. Early was some information here: http://steamcommunity.com/dev
but now, I can't find it.
Please give me API documentation, for operate with market and skins.
There is no API endpoint like this defined. There never was.
There are different solutions:
Parse the steam market. I would not recommend this because you will get rate limited really fast and you need to parse HTML
You can use SteamAPI.io or Steamlytics which both provide a proper API endpoint to get all item information (you can get the lists for free, just signup there and do the api call)
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I am getting a code signing certificate for my open source projects. I have a couple of questions about them:
Being a unregistered company that develops open source projects, is there a way to get passed the verification process?
If I register the code signing certificate under my personal name, are there any risks involved (for example, stolen identity and stalking)?
Certum (http://www.certum.pl) offers free code certificates for open source projects. I know the TortoiseSVN and AnkhSVN projects use certificates from them for their distributions.
The problems with signatures expiring when the certicate does is not specific to a certificate provider but on how you sign the certificate. To keep the signature valid you should also sign a timestamp. See the FAQ of your certificate provider.
You can obtain a certificate as an individual. See Code signing certificate for open-source projects? for issuers.
When you obtain a code signing certificate as an individual, you have to prove your identity. This involves providing identifying information such as a drivers license or passport to the issuing company. However, the only identifying information that gets put into the certificate (and therefore becomes public when you publish an app signed with that certificate) is your name and email address.
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It's my daily routine to check and view my server's Event Log.
Is there any application to analyze the Windows Event Log and send me notification or report?
I saw many Commercial application when I was googling like Splunk , but any idea about open source desktop application?
Snare
AdventNet free edition
ManageEngine's Event Log Analyzer (a division of Zoho Corporation (formerly AdventNet)) offers free event log monitoring tool. It is a full function free tool with 5 hosts limit.
Link: https://www.manageengine.com/products/eventlog/download-free.html
There is OSSEC but if you are going to buy something, then buy TriGeo's stuff.