Cryptocurrency
A cryptocurrency is a digital currency that only has value dependent on those who back it. For security, cryptocurrencies rely on blockchaining: a database organized in such a way that records are kept secure through peer-to-peer networks. Each record is kept within a block, and each block holds a timestamp and link to the block before it. The first cryptocurrency was Bitcoin, implemented in 2009 by Satoshi Nakamoto.
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- OS: linux
- Programming Language version: python
- CCXT version: 1.18.1060
- Exchange: binance / kraken ...
- Method: fetchTrades, others...
inspired by ccxt/ccxt#5683 (comment) (but i think this deserves it's own issue, and i could not find any place this was worked on.
Problem
The current way of pagination is very inconsistent / not well
Information Exposure
Information Exposure
Vulnerable module: requests
Introduced through: requests@2.18.4
Detailed paths
Introduced through: dvf/blockchain@dvf/blockchain#1369cac2094d36e694da1209d7d4f923264f7f50 › requests@2.18.4
Remediation: Upgrade to requests@2.20.0.
Overview
Requests is a Non-GMO HTTP library for Python
Affected versions of this package are vulnerable to Information Exposure. Upon receiv
Clients that are built around the API need some additional information to work effectively. This is the following:
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Peer list API: show more information about connected peers including the block height / cumulative difficulty of the peer. Basically, so the API provides at least as much information as the server TUI does.
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Status information: Similarly, the minimum amount of info the stat
Background
When dynamically rejecting an inbound channel, the connecting peer should receive an indication of why their request was rejected.
Examples of existing messages:
- Minimum channel size not reached
- Multiple channels not supported
Steps to reproduce
- Open a channel that will get dynamically rejected
- Get generic rejection message
Expected behaviour
To be done on lbrytech repo probably.
The wallet is currently configured as defined originally in ElectrumX, there are some docs for it already in there.
Keep in mind that we added new configuration keys and should clean up the unused ones at some point, so we need something easy
Using latest version 0.15.0.1. (Edit : on Ubuntu 18.04)
After the CLI wallet was locked, the prompt showed the password in clear while typing.
I'm not a big CLI user so this happened only twice so far, but I thought it's worth reporting this issue.
Not sure if a screenshot is useful, but here's one below anyway.

There are lots of configurable settings in the config.json file.
https://github.com/xmrig/xmrig/blob/master/src/config.json
Where can I find detailed documentation on what the settings do?
Bug Report
Problem
The amount is the first field in a transaction. When you fill this out, and then add recipient by scanning their QR code, the amount is reset.
Expected behavior
Amount is maintained unless user cancels the Tx.
Actual behavior
Set Tx amount.
Scan recipient QR code.
Amount is cleared and must be re-entered.
Algorithmic trading and quantitative trading open source platform to develop trading robots (stock markets, forex, crypto, bitcoins and options).
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Updated
Jan 30, 2020 - C#
When I try to run this code and print all the transactions' information, I found that Vout is wrong.
I think outIdx should be replaced by out.Value.
Is there a way to cancel an order before the unfilledtimeout expires, in a way that the local sqlite database remains consistent with the exchage?
Please note that the RPC command /forcesell or /forcebuy do not help with this. In the case of a SELL, one would like to cancel the SELL order in Order Book before the sale is actually executed. It seems a bit different from forcing a SELL with the RPC
A user asked me on slack if estimatefee returns BTC per Byte or BTC per Kilobyte... honestly I don't know and it's a bit hard to tell. I compared mainnet full nodes bcoin vs Bitcoin Core and observed a wild divergence (outputs below).
From Bitcoin Core help:
Estimates the approximate fee per kilobyte needed for a transaction to begin
confirmation within conf_target blocks if possible
I'd like to see an Ethereum address added to the custom property of the FUNDING.yml file for GitHub Sponsors. This would allow a canonical address to send funds to. For example, I'm building a project that allows developers to setup one recurring donation that is split between all of their dependencies with an Ethereum address: https://sustainus.io
Hi!
I was using get_batch_stock_quotes on regular basis and suddenly it stopped working (without updating av or any other python libraries). Calling the function for some list of stocks produces the error:
File ".../site-packages/alpha_vantage/alphavantage.py", line 292, in _handle_api_call
raise ValueError(json_response["Error Message"])
ValueError: This API function (BATCH_STOCK_Q
:ear_of_rice: A step-by-step blockchain tutorial in simplified Chinese
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Updated
Jan 22, 2020 - Go
Stats Plot Rounding
It look like some currencies have more precision in the mouseover display on the plot than others. For example, EOS shows many digits past the decimal while ETH only shows two. Adding a few more digits would make interpreting the charts much easier. The left plot shows the rounding I'm describing and the right shows the higher precision that EOS displays.

Thanks!
Describe the bug
Binance updated their system a few days ago, now the user account WS stream need ping lisenKey to keep a live every 30 minitues. In current version v0.7.4 I found the user account stream dropped every 1-2 hours, I guess the reason maybe we need ping lisenKey every 30 minitues.
Please see the docs here: https://github.com/binance-exchange/binance-official-api-docs/blob/mast
Created by Satoshi Nakamoto
Released January 3, 2009
- Wikipedia
- Wikipedia

#17851 added
std::to_stringto the list of locale dependent functions, along with a large number of usage exceptions. It was pointed out that some of these usages are actually likely bugs, and should be fixed rather than hidden as exceptions.