● Close open RPC ports on nodes: about 13% of Bitcoin nodes appear to have their RPC ports open on unencrypted public connections, putting users of those nodes at risk. This week’s newsletter contains a warning about communicating with Bitcoin nodes using RPC over unencrypted connections, links to two new papers about creating fast multiparty ECDSA keys and signatures that could reduce transaction fees for multisig users, and lists some notable merges from popular Bitcoin infrastructure projects. Even if you never connect to your node over the Internet, having an open RPC port carries a risk that an attacker will guess your login credentials. RPC communication is not encrypted, so any eavesdropper observing even a single request to your server can steal your authentication credentials and use them to run commands that empty your wallet (if you have one), trick your node into using a fork of the block chain with almost no proof-of-work security, overwrite arbitrary files on your filesystem, or do other damage.
Currently, discussion appears to be most active on the BIP proposal’s pull request. Planned topics include a comparison of two methods for bumping transaction fees, discussion of partially signed Bitcoin transactions (BIP174), an introduction to output script descriptors, suggestions for Lightning Network wallet integration, and approaches to efficient coin selection (including output consolidation). This exchanger site has an instant automatic exchange system, a large selection of currencies, and many positive customer reviews. This currency exchange medium entered the coin market in 2009, after the invention of first crypto currency Bitcoin. 94 countries. This allows ExpressVPN users to access the Binance exchange without any lags or hassle, putting them in the best position to make good trades. These token economics, or "tokenomics" are now transparently referred to as "ponzinomics" by insiders (which some early investors see as a good sign; the term was widely robbed of its negative connotations in the eyes of the people who only stand to benefit from these mechanisms). It’s generally pretty widely accepted that having some level of inflation is a good idea - inflation is a tool for causing people to partake in economic activity by making hoarding money costly, and economic activity is generally seen as on the whole being good for society.This is sort of a simplification - you’ll get a bunch of answers about why a positive inflation rate is good if you ask different economists, but it’s pretty widely accepted that a low, positive, stable inflation rate is good.Given that the orthodoxy of 21st century economics is that 2-3% is the ideal inflation rate, why was Bitcoin designed not to be inflationary?
John Newbery asks and answers a question about the term transaction pinning. Wuille’s answer provides detail about the mechanism for accomplishing this, but both answers warn users about the dangers of trying to perform encryption with keys and tools that are intended for non-encrypted use with Bitcoin. The Bitcoin consensus protocol doesn’t use ECDH, but it is used elsewhere with the same curve parameters as Bitcoin in schemes described in BIPs 47, 75, and 151 (old draft); Lightning BOLTs 4 and 8; and variously elsewhere such as Bitmessage, ElementsProject side chains using confidential transactions and assets, and some Ethereum smart contracts. Some of these schemes can’t use the default hash function libsecp256k1 uses, so this merged PR allows passing a pointer to a custom hash function that will be used instead of the default and which permits passing arbitrary data to that function. If the result is either "closed" or "filtered", your node is safe unless you’ve set a custom RPC port or otherwise have enabled a customized configuration.
14532 changes the settings used to bind Bitcoin Core’s RPC port to anything besides the default (localhost). Notable code changes this week in Bitcoin Core, LND, and 바이낸스 C-lightning. Notable code changes this week in Bitcoin Core, LND, C-lightning, and libsecp256k1. The announcement will include a copy of the release notes detailing major changes to the software since the 0.16.0 release. Alternatively, if no available channel can support payment of the invoice, C-Lightning will emit a warning. This parameter was originally intended to help support private routes, but it can also be used this way to support nodes that no longer want to accept new incoming channels. Best of all, these advantages are available immediately to anyone who implements them because the Bitcoin protocol’s current support for ECDSA means it also supports pure ECDSA multiparty schemes as well. However, there’s no standardized way for users to do the same using a P2SH address or any of the different types of segwit addresses (although there are some implemented non-standard methods with limited functionality). Non-custodial crypto exchanges and wallets: A non-custodial crypto wallet means that there is no centralized gatekeeper or account where user assets are stored.
A Ciência & Ensino é uma publicação semestral destinada a professores de ciências do ensino fundamental e médio e seus formadores.
How one can Make Extra Binance By Doing Much less
por Cara Medford (2023-08-09)
● Close open RPC ports on nodes: about 13% of Bitcoin nodes appear to have their RPC ports open on unencrypted public connections, putting users of those nodes at risk. This week’s newsletter contains a warning about communicating with Bitcoin nodes using RPC over unencrypted connections, links to two new papers about creating fast multiparty ECDSA keys and signatures that could reduce transaction fees for multisig users, and lists some notable merges from popular Bitcoin infrastructure projects. Even if you never connect to your node over the Internet, having an open RPC port carries a risk that an attacker will guess your login credentials. RPC communication is not encrypted, so any eavesdropper observing even a single request to your server can steal your authentication credentials and use them to run commands that empty your wallet (if you have one), trick your node into using a fork of the block chain with almost no proof-of-work security, overwrite arbitrary files on your filesystem, or do other damage.
Currently, discussion appears to be most active on the BIP proposal’s pull request. Planned topics include a comparison of two methods for bumping transaction fees, discussion of partially signed Bitcoin transactions (BIP174), an introduction to output script descriptors, suggestions for Lightning Network wallet integration, and approaches to efficient coin selection (including output consolidation). This exchanger site has an instant automatic exchange system, a large selection of currencies, and many positive customer reviews. This currency exchange medium entered the coin market in 2009, after the invention of first crypto currency Bitcoin. 94 countries. This allows ExpressVPN users to access the Binance exchange without any lags or hassle, putting them in the best position to make good trades. These token economics, or "tokenomics" are now transparently referred to as "ponzinomics" by insiders (which some early investors see as a good sign; the term was widely robbed of its negative connotations in the eyes of the people who only stand to benefit from these mechanisms). It’s generally pretty widely accepted that having some level of inflation is a good idea - inflation is a tool for causing people to partake in economic activity by making hoarding money costly, and economic activity is generally seen as on the whole being good for society.This is sort of a simplification - you’ll get a bunch of answers about why a positive inflation rate is good if you ask different economists, but it’s pretty widely accepted that a low, positive, stable inflation rate is good.Given that the orthodoxy of 21st century economics is that 2-3% is the ideal inflation rate, why was Bitcoin designed not to be inflationary?
John Newbery asks and answers a question about the term transaction pinning. Wuille’s answer provides detail about the mechanism for accomplishing this, but both answers warn users about the dangers of trying to perform encryption with keys and tools that are intended for non-encrypted use with Bitcoin. The Bitcoin consensus protocol doesn’t use ECDH, but it is used elsewhere with the same curve parameters as Bitcoin in schemes described in BIPs 47, 75, and 151 (old draft); Lightning BOLTs 4 and 8; and variously elsewhere such as Bitmessage, ElementsProject side chains using confidential transactions and assets, and some Ethereum smart contracts. Some of these schemes can’t use the default hash function libsecp256k1 uses, so this merged PR allows passing a pointer to a custom hash function that will be used instead of the default and which permits passing arbitrary data to that function. If the result is either "closed" or "filtered", your node is safe unless you’ve set a custom RPC port or otherwise have enabled a customized configuration.
14532 changes the settings used to bind Bitcoin Core’s RPC port to anything besides the default (localhost). Notable code changes this week in Bitcoin Core, LND, and 바이낸스 C-lightning. Notable code changes this week in Bitcoin Core, LND, C-lightning, and libsecp256k1. The announcement will include a copy of the release notes detailing major changes to the software since the 0.16.0 release. Alternatively, if no available channel can support payment of the invoice, C-Lightning will emit a warning. This parameter was originally intended to help support private routes, but it can also be used this way to support nodes that no longer want to accept new incoming channels. Best of all, these advantages are available immediately to anyone who implements them because the Bitcoin protocol’s current support for ECDSA means it also supports pure ECDSA multiparty schemes as well. However, there’s no standardized way for users to do the same using a P2SH address or any of the different types of segwit addresses (although there are some implemented non-standard methods with limited functionality). Non-custodial crypto exchanges and wallets: A non-custodial crypto wallet means that there is no centralized gatekeeper or account where user assets are stored.