Bitcoin PHP Scripts from CodeCanyon

The Better Bitcoin Bureau

[link]

Four reasons you should pledge to James Cramer's flipstarter campaign for SLP

Campaign link here
In case you still have the old 1.2 Flipstarter plugin, download the latest here
Why you should contribute to James' campaign:
  1. Validation improvement: If you've used EC-SLP, you know validation can be slow, whether you use brute-force-get-your-whole-DAG-from-EC-server (intolerable for busy tokens), or Graph Search (better, still not great at all). Optional federated validation can vastly improve this with just a bit of tradeoff in trustlessness.
  2. Local rewards toolbox: Issue dividends and rewards to tokenholders, all from the comfort of your desktop, no going to a website and bombarding the REST server (with possible downtime) anymore, and with improved algorithm to efficiently reward way more holders! IMO the ability to drop BCH/token rewards to tokenholders is one of the greatest usecases SLP offers - and is where it shines through the BCH ecosystem. Worth supporting for this alone.
  3. Tutorial series: Want users? This is how you get users, can't just tell people "oh but BCH has tokens" and leave them at that. Gotta show them.
  4. James has been instrumental in founding and establishing basically everything about the Simple Ledger Protocol. You want this guy to keep working on it.
Considering the potential benefits of the SLP protocol to BCH as a whole, I think it's well worth it to see this funded even for people who care little for tokens. I pledged 3 BCH myself.
submitted by imaginary_username to btc [link] [comments]

Polkadot Digest 16 Oct 2020

Polkadot News

Bitcoin is coming to Polkadot through the Interlay bridge in early 2021. https://polkadot.network/bitcoin-is-coming-to-polkadot/
Today at 14.00 UTC is the kickoff for Hello World! by Polkadot, a Gitcoin-powered learning challenge where you can obtain DOT and KSM. https://www.crowdcast.io/e/gitcoin-hello-world-by-polkadot/
Polkadot Decoded, the event for the Polkadot community, is coming on 3 December 2020. https://decoded.polkadot.network/
Bill Laboon gave an overview of proof of stake and engaged in a roundtable discussion with reps from Ethereum 2.0, Tezos, Cardano and Concordeum at CV Labs' "2020 - The Year of Proof of Stake" discussion. https://www.youtube.com/watch?v=maJYnqsuhms&t=301s
Sub0 is over! Thanks to everyone who attended. You can watch all of the sessions at https://www.crowdcast.io/e/axvfinsv

Kusama News

The proposal to fund Voxel Bridge, a Kusama AR exhibit at the Vancouver Bienniale of Public Art, has passed. https://spark.adobe.com/page/r33XysJHusO1C/
The first bounty has been posted using the new Bounties pallet. This would involve developing the UI to use Bounties more easily. https://kusama.polkassembly.io/post/325

Substrate News

Interested in querying Substrate node data using GraphQL? You can use Substrate-Graph: https://github.com/playzero/substrate-graph

Tips and Tricks

If you are the type of person who reads down to here in the Polkadot Digest, you'd probably make an excellent grants evaluator at Web3 Foundation! https://web3.bamboohr.com/jobs/view.php?id=85
Or perhaps a Technical Educator intern / entry-level candidate, working on my team to teach people about Polkadot. https://web3.bamboohr.com/jobs/view.php?id=84
submitted by W3F_Bill to dot [link] [comments]

There's a new Bitcoin ATM in Thunder Bay, Ontario!

Hi everyone,
I'm here to announce a new Bitaccess BTM in Thunder Bay at Marnics Mobile, 910 Memorial Ave. You'll be able to find it on https://coinatmradar.com/ or this map of our other machines: https://crypto-kiosk.bitaccessbtm.com/
Like all our machines, this one is 2-way, letting customers buy or sell bitcoins on the spot with cash, as well as a number of alt coins. We charge a modest 6% for buying and 5% for selling bitcoins, our source for price data is https://www.canadianbitcoins.com/graphs.php
submitted by cryptokiosk to BitcoinCA [link] [comments]

FUD Friday: Greg Maxwell drops the hammer on Haskell and Rust

My first OP was dedicated to debunking trivial EITN FUD, so this time I'm going in the opposite direction and asking others to debunk or support what one of Bitcoin's top math/crypto/compsci gurus says about Cardano's chosen languages.
Thanks to both u/nullc and u/ataraxiaceleste for opening and expanding the discussion.
Courtesy of BitcoinTalk: Thoughts regarding use of Rust and Haskell for building a blockchain
Gmax responds:
Performance and memory usage are both security critical in consensus systems. It's difficult (impossible?) to write Haskell which is all three performant, predictable in its memory usage, and idiomatic-- at least for some sufficiently strict requirements in performance and memory usage.
Rust is a lot like C++. In theory, it's easier to write rust code that lacks particular classes of bugs than in C++. However, no one using C++ uses the entire language and the various subsets people use also largely avoid various kinds of bugs. Not as rigorously as rust, particularly because its hard to verify you're using the subset of C++ you're intending to use.
In Bitcoin we've found that the kind of bugs that rust guarantees the absence of have been uncommon.
I've personally found that the rust code I've encountered online has often been low quality to extremely low quality-- often throwing panics on the slightest unexpected input or usage, or suffering from incorrect results due to integer wraparound (which in theory debug mode would catch, but it runs so slow as to be completely unusable on many codebases). I'm unsure if this is a property of the language itself (e.g. does the syntax lead to greater faults), user's expectations of the language (sloppy work because they expect things to be 'safe'), or the useapplication (e.g. are people that redo stuff "but in rust" less experienced programmers?).
Given that experience I would not place a bet right now that rust currently lowers the rate of serious defects in large programs developed by experienced teams compared to C++ with modern practices. However, if I had to use software written by inexperienced developers I suppose I would probably prefer they use rust to C++...
The rust ecosystem is also immature and unstable-- it's not uncommon that any random code you get requires some bleeding edge new compiler. Rust also largely imitates the extremely security-toxic software distribution model of ruby and javascript-- it's common for a rust package to have a dependency graph of hundreds of assorted packages, any of which could backdoor your system. It's possible to use rust without using the packaging ecosystem, but doing so is more of a challenge.
Rust and C++ also have no good facilities for formally reasoning about the behaviour of programs (beyond things like the borrow checker in rust). But C++ is a superset of C and there are tools to rigorously prove things the properties of C code, which means you can write components of C++ programs in C and formally prove things about them. You could do the same with rust+c but C++ and C share a lot more syntax and behaviour.
In the world of open source Rust and Haskell both have an additional limitation that the community of developers and reviewers for these languages is smaller than that of C++.
Please note that however much I tend to defer to his opinions (per Adam Back's guidance that when one disagrees with Greg about technical matters they are probably wrong), I must reconcile that deference with respect for the IOG team's galaxy brains. Negative appraisals of Rust and Haskell aren't going away, so IMO it behooves the Cardano community to get a grip on the most valid criticisms and try our best to stay ahead of them.
On a lighter note, the Monero sub has been having a lot of fun in their weekley Skepticism Sundays and we are overdue for our own version, as previously suggested months ago by u/velvia695 at https://www.reddit.com/cardano/comments/de1mqg/suggestion_skepticism_sunday_like_monero_has_but/ .
Let's keep it educational and really do our best to limit use of ad homs to zingers and puckish banter rather than as a subsitute for actual arguments!
submitted by Jahtoshi_Rastamoto to cardano [link] [comments]

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submitted by hagvu007 to u/hagvu007 [link] [comments]

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submitted by hagvu007 to u/hagvu007 [link] [comments]

Adult entertainment trough Devil´s Dragon Token

Adult entertainment trough Devil´s Dragon Token
Hello everyone, In this post I would like to talk about some of the DDGN Token features and company achievements.
https://preview.redd.it/of2xxl7gxtg51.png?width=640&format=png&auto=webp&s=b2ed2316a60511260102feb5f1a77750ff0c2c58
The company aims to revolutionize adult entertainment trough blockchain innovations presenting the opportunity to the user to be an active participant in this field using the Ecosystem. DEVIL´S DRAGON TOKEN is fully decentralized autonomous and encrypted. It offers the option to share, publish, and earn through selling, trading, exchanging, and utilizing the features of its ecosystem. A unique multi-use cryptocurrency with many active sites bringing new business models to life and disrupting the high set price of contemporary adult entertainment. DEVIL´S DRAGON TOKEN is a Ethereum based token that will be able to be used with any other Blockchain project or technology that is already operating.
DDGN is used on active sites to access related and wanted content. The full list can be found on the website by clicking on “Sites” or scrolling down. https://www.devilsdragon.com
TOKENOMICS. (ICO Information / Token Economy) Token name: DRAGON DEVIL Token Symbol: DDGN - Supply Token: 180 000 000 NOT MINTABLE Decimal: 18 - Token type: ERC20 CURRENT STATUS: Under Crowdsale with 5% PRE-SALE Token value 2000 DDGN = 1 ETH for PRIVATE - ONLY PRESALE In ITO sale the rate will be 1000 DDGN = 1 ETH START PRESALE: 2020-08-15 00:01 END: 2020-08-31 23:59
!Please note that only Ethereum is accepted. This will ensure transparency and prevent any fraudulent activities that may impact the value of the coins negatively!
Token Allocation: • Presale (PRIVATE SALE) 5% (All unsold tokens will be burned) • Crowdsale 55% (All unsold tokens will be burned) • Team & Partners 9% (Only used for new partnerships and strengthen the Team) • Reserved 6% (For Exchange and Legal Purposes) • Ecosystem 18% (Only used on our platforms like us write in our White Paper) • Development Team 2% (Used only for development and purposes none of these tokens will be sold) • Founder 4% (Used for administrative, regulatory and internal ecosystem needs only) • Ext Developer 1% (Non-Team Developers to be used for Testing and other Development Purposes on all Ecosystems and their features).
At this point DDGN is already listed on MyCryptoCheckout.
https://preview.redd.it/zgif2u4jxtg51.png?width=640&format=png&auto=webp&s=5ac7e157e30e1b15b5a7201370d3437deced898c
The ways to earn will be further possible by rewards and revenue sharing, live broadcasts, moderating content for the approval or disapproval of forum posts, mining for content, and arranging unused hard disk space. These are set just at the start point. The potential of the new features immense.
Presented Roadmap looks great: • Early 2018. KISSES TECH Established as a Czech Company (February) • Between the beginning of 2018 and the end of 2019. Fixed Adult Entertainment Coin + Many other projects related to Adult Entertainment and Blockchain to evolve and gather together: DDGN • Early 2020 Launch of the DDGN Project • Mid 2020 Launch of ETHpimp Q3 2020 ITO DDGN • Late 2020 Alpha version of the DDGN Dedicated Video Platform with a Decentralized Prize Service for Display and Manufacturing works with DDGN. On this platform the goal is to use a few supporting protocols such as ERC721 to make the videos like unique fine art creations. Luring a new business model which is fairer and more transparent. More Active Sites and More Partners for Ecosystems Alpha Version and Initial Registration First Delivery of Crowd Content Funding Network with Prizes & Decentralized Direct Revenue Sharing on the Stock exchange list
• Early 2021 DDGN Platform Beta Version Dedicated Videos that Live Immediately with Real Rewards and Share Earnings for Views & Creations CDCFN.COM Fully Active with the Distribution of Live Prizes and Adding New Sites to the Ecosystem makes DDGN more rare, enjoyable, and valuable to everyone involved.
Also surfing the blog (https://www.devilsdragon.com/blog) I found very interesting facts about CDCFN (Content Delivery Crowd Funding Network): www.cdcfn.com
A forum like website on which people share their original content and earn rewards in DDGN (Devil´s Dragon) Earned DDGN, as mentioned before will be available for exchanging to Bitcoin, Ethereum or other currency. The platform has a members shop, too, where members can earn and spend their earned tokens (DDGN) they gained from the site. Members Shop is integrated to work along side loads of other applications & plugins. Below is presented DDGN Tokens Earning System
  1. Forums - will allow member to earn tokens for starting topics, replying to other topics or to their own one.
  2. Downloads – Earning by uploading files on the platform, reviewing, commenting. Also receiving tokens for each download of their uploaded file.
  3. Calendar – Earning by submitting events, reviewing and commenting on the events.
  4. Gallery - Allowing members to earn for uploading images, reviewing and commenting on images.
  5. Commerce – Earning for a review on a product
  6. Reactions - Allowing members to earn DDGN Tokens for receiving reactions from their content.
  7. Clubs - Awarding users for joining a club and creating topics, replying and uploading files in clubs.
  8. Media Uploader - Awarding DDGN Tokens to users for uploading documents, images, audio and video files.
  9. Bonus DDGN Tokens – Awarding users on a daily, weekly and monthly basis. The user will have to log in at least on time in that period.
  10. Award DDGN Tokens - Awarding DDGN to your selected members or user groups via the ACP. On the user profile a section will be possible to add showing the amount of DDGN and a link to donate. The platform will have integrated Warning System which penalizes members if they receive a warning by removing DDGN tokens and setting different amounts of DDGN for different warn reasons. Members Shop Items – allowing members to spend their tokens Each item can be created unlimited times and admins can select different prices and permissions Creating categories to place the items in Setting moderator permissions to allow certain members to buy items for free All items use their own code Each item can have its own permission settings to select what usergroups can view it, buy it or send it Members can sell back their unwanted items at a cost of a certain % of the items price admins will set in the ACP After a user stores an item it will store the rewards for that purchase, so say they store multiple items, then at a later time admins change the rewards for that item in the ACP, they will still receive the rewards set when they purchased the item The list of default items: • Opening a random post count mystery box • Opening a random reputation DDGN Tokens mystery box • Changing username • Changing member title • Adding or editing signature • Uploading an avatar • Opening a mystery DDGN Tokens box • Opening a mystery items box • Resetting users´ warning DDGN Tokens • Allowing members to go browse anonymous until their session ends • Viewing a password from a password protected forum • Playing Rock, Paper, Scissors, Lizard, Spock • Allowing users to pin topics for a selected amount of days • Allowing members to feature files for a selected amount of days • Upgrading usergroup for x amount of days, months or years • Gambling to win a random trophy from Trophy’s & Medals • Buying a trophy from Trophy’s & Medals • Buying a medal from Trophy’s & Medals • Guessing the number • Embedding a video to profile • Uploading an image to use as a background on profile • Sending a personal sticky note • Adding / Editing social info • Custom Codes / Vouchers / Coupons • Creating custom codes for members to purchase including game codes / voucher codes and so on • Once a user redeems this item they will instantly receive a PM with the code attached
List of custom items: • Each Custom Item has to be manually awarded to the members, it could be for a coupon code, it could be anything • Choosing to receive a notification or email saying x member brought x custom item and admins need to award it • Showing a table in the ACP with all custom purchases users have brought showing if the item has been awarded or not • Adding a block to the ACP dashboard with the total amount of items admins need to award manually
Statistics Pages : • Shows a statistics page with a graph of the global DDGN Tokens gained on platform per day / week / month • Shows another statistics page with a graph of the amount of shop items purchased globally and the global DDGN Tokens spent per day / week / month • Shows a 3rd statistics page with a graph of the global DDGN Tokens won using items what you gamble your DDGN Tokens with
Members Bank: • Allowing members to store their DDGN Tokens in a bank • Charging members to deposit their DDGN Tokens • Awarding interest to members each month on their banked DDGN Tokens • Members can view all their transactions in a nice and tidy pop up table • Showing a table in the ACP with all the members who have created a bank account • Showing a 3D pie chart in the ACP with the DDGN Tokens per member group • Showing a 3D pie chart in the ACP with the current interest to pay per usergroup • Showing a graph of the banks transactions from your selected time periods
ACP: • Showing a table listing all Normal items purchased with all the information of the item purchase • Showing a table listing all custom items purchased with all the information of the item purchase • Showing a table listing all custom code items purchased with all the information of the purchase • Showing a table listing all the membergroup upgrade items purchased with all the information of the upgrade, expire date
• Choosing what user groups can gain DDGN Tokens with-in the forums / downloads / reaction settings • Generating unique purchases • Showing the shop items in a nice and clean node table giving you the ability to drag and drop them to different categories and sort them in your preferred positions • Selecting the amount of items to show per page in the shop and items page • Choosing the select to view the shop page / items page / rewards & logs page from either a table view or a nice new grid view • If admins allow users to send items to others admins can select a % of the value of the item to charge the users to send that item • Picking to show either a category in the sidebar of show the categories in a filter button on the table itself • Adding a block to the ACP dashboard showing the amount of custom items admins need to award to the users
With that said, I would like to hear your opinion about the project and the features that the team provides for us!
All this information and much more can be found on the below links.
Website: https://www.devilsdragon.com/
White paper: https://www.devilsdragon.com/whitepaper.pdf
Blog: https://www.devilsdragon.com/blog/
ANN: https://bitcointalk.org/index.php?topic=5260322
Facebook: https://www.facebook.com/devilsdragonofficial
Twitter: https://twitter.com/dragon_devils
Discord: https://discord.com/invite/xCwyntG
Reddit: https://www.reddit.com/useDevilsDragon
Telegram: https://t.me/devilsdragon_official
E-mail: [email protected]
Company behind of DDGN Token and development of the platform is KISSES TECHNOLOGY (Group) s.r.o
About the author: Proof of authentication link - https://bitcointalk.org/index.php?topic=5260492.msg54989967#msg54989967 Bitcointalk Username - ijeb Bitcointalk URL - https://bitcointalk.org/index.php?action=profile;u=1668500
submitted by ijeblowrider to u/ijeblowrider [link] [comments]

Network effect doesn't explain Bitcoin dominance : technical arguments for Bitcoin Maximalism

I often saw some Bitcoiners counter the altcoin shillers with the following argument: "Bitcoin is the first so it has the network effect, so your altcoin will always worth less"
This is not totally wrong but I think this argument is bad. Using it implies implicitly that you admit that Bitcoin is technically less capable than altcoins with their higher transaction rate, fast blocks, instant confirmation, without fees and smart contract support....

And this is WRONG ! Bitcoin price is higher, because Bitcoin is already TECHNICALLY BETTER than any other altcoin and not because of network effect. In 2017, Bitcoin dominance was lower, some altcoin reaches almost the same level than Bitcoin. So network effect is not what prevents an altcoin to take the lead but it is the fact that almost all altcoin that pretend to be better than Bitcoin are technically flawed.
Why ? They use bigger blocks, DAGs (Directed Acyclic Graphs, like used in IOTA or Nano) or wtf they created to disturbe you and make you believe they are better than the good old Bitcoin blockchain. But they have at least one of these two weak points: validation time oand bandwidth.

If they use biggefaster blocks, validation time of block is higher and so block propagation is slower. Less nodes can operate as they may not be able to validate blocks fast enough to keep up with the tip of the chain. You end up like Ethereum that has less and less full verification nodes leading to centralization of the network.
If they use DAGs, they achieve consensus through a "proof-of-stake" vote and always at the cost of bandwidth (quadratic cost in number of node, linear in transaction rate). DAGs are often presented as "each node has its own ledger" but the reality is that the only global ledger you should trust is the complete DAG of the ledgers of each node. Only servers with a shitload of download bandwidth can maintain it as debunked here and here. To not look (in fact be) centralized, some DAG altcoins doesn't, opening the door to history rewrite by buying account that owned a big stake before and still use a lot of bandwidth to reach consensus. Bitcoin just add 80 bytes of proof-of-work data on a block of 1-2MB to achieve it and protect from history rewrite, almost zero cost for the network (that's why we pay fees to miners who carry the cost).
You only have those problems when it reaches a critical level of usage and only then we can see how much those limits where ignored. Until now, very few altcoins reached the limit (maybe Ethereum, and IOTA shows us it is centralized already by stopping the network)
Bitcoin has the highest price because Bitcoin is technically the only possible decentralized king (and a centralized cryptocurrency worths nothing). Yes maybe 1MB limit was too conservativ, yes fees are higher, yes 10 minutes is slow. But if everyone wants their coffee payment to be settled onchain, 1MB or 8MB or 32MB each 10 minutes, minutes or secondes will never be enough while it is a big difference for the network health. You only need the blockchain for settlement, for payment you have Lightning Network that can already destroy PayPal's transaction rate.
So next time you feel convinced by an altcoin that pretend to be better than Bitcoin while being decentralized by design, evaluate the requirement to be a fully validating node and what the overhead of bandwidth needed to achieve consensus. The chances are high that they didn't take care of one of these two issues and end up centralized or broken. You don't need the network effect argument.
submitted by Pantamis to Bitcoin [link] [comments]

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submitted by hagvu007 to u/hagvu007 [link] [comments]

I wrote an offline Bitcoin block explorer that loads data from Bitcoin Core and allows you to explore the blockchain on your PC

Dear /Bitcoin, I wrote a set of tools to import data from .bitcoin/blocks/blkXXXXX.dat files into databases and allow you to explore the blockchain on your own PC by running ad-hoc queries of all the main Bitcoin Core data structures including blocks, TX's, inputs, outputs, addresses and more.
It's written in C++ and uses Bitcoin Core itself to read the data, so it's always 100% compliant with the latest Bitcoin release. I abstracted away the database functions, so you can implement "drivers" for any other DB system. I've been playing with it on MySQL but perhaps others would prefer Neo4J or Cassandra for nosql graph analysis.
Once the data is loaded, you can run any database query against it.
I implemented a simple reference Python interface to it so you can play with the blockchain. I made this outer layer in Python but any other language can be easily plugged in, including big data analysis systems like Spark or Hadoop.
Some stuff you can do with it:
While loading the block files it does some additional work :
Addresses, TX's and all other data structures are decoded by Bitcoin Core itself. The C++ Toolbox links to Bitcoin Core and uses the canonical implementation, so the loaded data is accurate. The Python reference implementation is almost 100% independent from the C++ code (except for configuration code which shares the same parameters and config file as the C++ Toolbox).
Released under the MIT license.
I hope you like playing with it!

Links

Announcement : https://bitcointalk.org/index.php?topic=5211107.0
Docs : https://crypto.bi/tape/toolbox/
Source code: https://github.com/cryptobi/toolbox
submitted by josefonseca to Bitcoin [link] [comments]

HEX Unique features

HEX is the principal endorsement of store on the blockchain! HEX pays Trustless Interest with no counterparty chance. Given programmable cash the principal program ought to be premium.
Pays holders rather than diggers. Staking HEX resembles getting free mining equipment and power. Bitcoin and HEX correlation
No Satoshi (on the off chance that he doesn't guarantee in 50 weeks) or Mt.Gox dumping on you. No swelling bug conceivable like bitcoin has had. Unit predisposition fixed. Progressively disseminated mining environment. Whale punishment which gives whales coins to stakers, and so forth.
Around 12 million or more of the 18 million all out BTC worth of HEX cases will be given to the stakers on day 353 by shares. What's more, It gets duplicated by the Viral and CriticalMass selection extra multipliers which can build it up to 3x. The offer cost just goes up.
Stakers that end stake early or late compensation faithful stakers. Longer stake submit pays 20% more every year, up to 3x shares, (halfway years are fine). Lower charges, lower swelling. Referral program. Organizer is a showcasing master with a crowd of people. Early adopters get paid amazingly well.
20% Speed reward tumbling to 0% during the fifty weeks. Unclaimed coins paid to stakers 2% every week for 50 weeks. Consistently you don't guarantee, another person gets your coins. Minimum amount and Virality rewards increment payouts to stakers so they make progressively HEX the more individuals that guarantee, than if less individuals asserted, despite the fact that they get unclaimed coins on day 353. Each pumpamental to bolt up supply, increment reception and cost.
Hex has a lower expansion rate than Bitcoin, much after the rate was sliced down the middle twice in its 10 years. The swelling is additionally deferred, in light of the fact that it's just paid on finished stakes, and stakes can most recent 10 years. Failure to exchange staked coins builds the estimation of unstaked coins, and chance that some will early endstake and take care of punishments to faithful stakers.
Trustless Interest.
Suppose you need to make more bitcoin on your bitcoin. What are your alternatives? You could loan your coins out and face the challenge they're not returned, or you could have a go at selling your coins for mining equipment and want to get more coins back later. Bunches of individuals have lost cash attempting either.
Counterparty hazard in Bitcoin ventures.
To acquire enthusiasm on their Bitcoin, most clients send them to a brought together outsider, for example, a trade. There, coins can be acquired to "short" the market. Merchants acquire the coins to sell, in the expectations that they can rebuy them less expensive before they need to return them, along these lines benefitting from value diminishes. These brought together gatherings are security openings that are frequently hacked, annihilate protection, or acquaint expenses on the off chance that you need with get your assets out. Billions of dollars in coins sent to trades or loan specialists have been taken. Not your keys, not your coins.
These concentrated outsiders and brokers are so essential to clients looking for yield (making interest) that the organizations themselves have made more benefit on Bitcoin than its originator. A huge number of dollars of significant worth has moved into the pockets of brokers. HEX fixes this.
This replaces these outsiders with a trustless distributed to framework. Rather than sending your HEX to a trade so they can loan it out for your sake to procure enthusiasm for you, you simply lock it in same brilliant agreement that stamped all the HEX in any case, and it credits you intrigue. In case you're given programmable cash, the principal thing you should program is premium.
HEX pays enthusiasm to stakers rather than excavators.
A few clients take a stab at mining to make more digital money. Rather than sending your cash to a remote super corp to purchase mining gear which appears late, utilized, or never by any stretch of the imagination, you can avoid the deteriorating resource and power bills and simply stake your coins.
HEX is the primary digital currency with a graph of future sellable stockpile (lapsing stakes after some time.) This makes sure about purchasers trust in future estimation of their speculation.
HEX has Speculative Stickiness.
Typical cryptographic forms of money have: Price, hash rate.
HEX has: HEX value, Share cost, Directly influences staker benefit per share: % of supply staking, Average stake length, Average stake size, stake termination diagram after some time, early and late end stake punishments.
HEX links: Website: https://hex.win/ Twitter page: https://twitter.com/HEXCrypto Facebook page: https://www.facebook.com/HEXcrypto Telegram page: https://t.me/HEXcrypto Github: https://github.com/bitcoinHEX Reddit page: https://hexcrypto.reddit.com/ Medium page: https://medium.com/hex-crypto/ Ann: https://bitcointalk.org/index.php?topic=4523610.0
Author information; Bitcointalk username: TridentHorn Bitcointalk profile: https://bitcointalk.org/index.php?topic=4523610.0
submitted by TridentHorn to Cryptocoinworld [link] [comments]

Eventi del mese: Febbraio 2020



Organizzate eventi? Ne conoscete altri? Segnalateli a u/-Defkon1-
submitted by -Defkon1- to ItalyInformatica [link] [comments]

190 университетов бесплатно выложили сотни своих курсов. Если вы не слышали, университеты по всему миру предлагают свои курсы онлайн бесплатно (или, по крайней мере, частично бесплатно). Эти курсы называются БООК или Большие открытые онлайн–курсы. Часть 1

Программирование

Введение в CS50 по разработке игр от Гарвардского университета; Разработка мобильных приложений для CS50 с React Native от Гарвардского университета; Веб–программирование CS50 с использованием Python и JavaScript от Гарвардского университета; Функции, методы и интерфейсы в Go от Калифорнийского университета, Ирвин; Совпадения в Go от Калифорнийского университета в Ирвине; Начало работы с Go от Калифорнийского университета, Ирвин; Вычислительные в Python I: основы и процедурное программирование от Технологического института Джорджии; Вычислительные в Python IV: объекты и алгоритмы от Технологического института Джорджии; Вычислительные в Python III: структуры данных от Технологического института Джорджии; Вычислительные в Python II: структуры управления от Технологического института Джорджии; Проект программирования (Java) от Политехнической Школы Лозанны; Пиксельное искусство для видеоигр от Мичиганского государственного университета; Веб–дизайн: стратегия и информационная архитектура от Калифорнийского института искусств; Веб–разработка с React от Гонконгского университета науки и технологии; Разработка мультиплатформенного мобильного приложения с React Native от Гонконгского университета науки и технологий; Автоматизированное тестирование программного обеспечения: практические навыки для разработчиков Java от Технологического университета Делфта; Автоматизированное тестирование программного обеспечения: передовые навыки для разработчиков Java от Делфтского технологического университета; Погружение в Python от Московского физико–технического института; Основы разработки на C ++: красный пояс от Московского физико–технического института; AR (дополненная реальность) и услуги потокового видео от Университета Йонсей; Интеллектуальные устройства и новые мобильные технологии от Университета Йонсей; Решение проблем, программирование и видеоигры от Университета Альберты; Введение в дополненную реальность и ARCore от Google Daydream Impact; Основы NetLogo от Института Санта–Фе; Ключевые навыки конкурентоспособного программиста от Санкт–Петербургского государственного университета; Проблемы бизнеса и программные решения от Университета Дикина; Введение в язык Котлин от Санкт–Петербургского государственного политехнического университета; Веб–доступ для разработчиков от Университета Райерсона; Разработка карманных приложений для AR с Unity от Unity; Системные информационные ресурсы Интернет с MySQL / PHP и Joomla от Университета Росарио; Котлин для разработчиков Java от JetBrains; Введение в основы XR: VR, AR и MR от Unity; 3D–арт и аудио конвейер от Unity; Программирование прикладных систем от Unity; 3D взаимодействия и навигация от Unity; Программирование ядра взаимодействия от Unity.

Инженерия

Анализ транспортных явлений I: математические методы от Массачусетского технологического института; Строение космического челнока от Массачусетского технологического института; Искусство структурной инженерии: хранилища от Принстонского университета; Совместная безопасность роботов: проектирование и развертывание от Университета в Буффало; Электроэнергетические системы от Университета в Буффало; Современная робототехника, курс 5: Манипуляции с роботами и мобильные роботы на колесах от Северо–Западного университета; Робот Thymio от Университета естественных наук от Национальной Политехнической Школы Лозанны; Принцип полупроводниковых приборов Часть I: Полупроводники, PN–переходы и биполярные переходные транзисторы от Гонконгского университета науки и техники; Привет (реальный) мир с ROS — роботизированной операционной системой от Делфтского технологического университета; Разум Вселенной — Роботы в обществе: благословение или проклятие? от Делфтского технологического университета; Hyperloop: изменение будущего транспорта от Делфтского технологического университета; Электромобили: технология от Делфтского технологического университета; Электромобили: политика от Делфтского технологического университета; Глазами инженеров — расширение видения: инженерная механика с помощью эксперимента, анализа и проектирования от Университета Нового Южного Уэльса; Взглядом инженеров — представление о концепции: инженерная механика с помощью эксперимента, анализа и проектирования от Университета Нового Южного Уэльса; Конструкция оптической системы первого порядка от Университета Колорадо в Боулдере; Проектирование высокопроизводительных оптических систем от Университета Колорадо в Боулдере; Оптическая эффективность и разрешение от Университета Колорадо Боулдер; Двигатели и схемы управления двигателем от Университета Колорадо в Боулдере; Физика полупроводников от Университета Колорадо в Боулдере; Датчики и сенсорная схема от Университета Колорадо в Боулдере; Транзистор — полевой транзистор и транзистор с биполярным переходом от Университета Колорадо в Боулдере; Диод — pn Junction и Metal Semiconductor от Университета Колорадо в Боулдере; Diseño de diques rompeolas con cubípodos от Политехнического университета Валенсии; Введение в энергетику солнечной фотовольтаики от Политехнического университета Валенсии; Ознакомление со строительством от Университета Политехники в Валенсии; BIM Основы для инженеров от Национального университета Тайваня; Приложение BIM для инженеров от Национального университета Тайваня; Распределение электроэнергии от Института технологий и высшего образования в Монтеррее; Интеллектуальная сетка: фундаментальные технологии от Института технологий и высшего образования в Монтеррее; Передача электроэнергии от Института технологий и высшего образования в Монтеррее; Электрическая мощность: концепции и принципы от Института технологий и высшего образования в Монтеррее; Интеллектуальная сетка: электрические сети будущего от Института технологий и высшего образования в Монтеррее; Основы МОП–транзисторов от Университета Пердью; Основы протекания тока от Университета Пердью; Учебник по основам полупроводников от Университета Пердью; Введение в цепи от Университета Федерико II в Неаполе; Стандартизация от EIT Digital; Введение в системы управления батареями от Колорадского университета; Имитация модели ячейки эквивалентной цепи от Университета Колорадо; Оценка состояния батареи (SOC) от системы Университета Колорадо; Введение в веб–картографию: часть 2 от Швейцарской высшей техническая школы Цюриха; Высокоэффективное моделирование методом конечных элементов — часть 2 от Королевского технологического института; Интеграция энергетических систем: тенденция или революция? от Университета им. К.Ю. Ленвена Распространение радио от Института Mines–Télécom; «Monotsukuri» делает вещи в Японии: машиностроение от Токийского технологического института; Транспортная инженерия от Католического университета Чили; Введение в контрольную цифру Computadora от Университета Тенарис; Agile для управления проектами от Университеа штата Мэриленд.

Информатика

Машинное обучение с Python: от линейных моделей до глубокого обучения от Массачусетского технологического института; Технология блокчейн от Калифорнийского университета, Беркли; Биткойн и криптовалюты от Университета Калифорнии, Беркли; Введение в машинное обучение от Университета Дьюка; Введение в компьютерное программирование от Лондонского университета международных программ; Как работают компьютеры от Лондонского университета международных программ; ИТ–инфраструктура и новые тенденции от Университета Миннесоты; Корпоративные системы от Университета Миннесоты; Управление ИС / ИТ от Университета Миннесоты; Встроенное программное и аппаратное обеспечение от Университета Колорадо в Боулдере; Промышленные рынки Интернета вещей и безопасность от Университета Колорадо в Боулдере; Введение в технологию блокчейн от Московского физико–технического института; Искусственный интеллект — обучение и теория от Национального университета Тайваня; Введение в аппаратное обеспечение Verilog от Университета Галилео; Интернет вещей: Новые технологии беспроводных и облачных вычислений от Университета Йонсей; Информационные технологии от Университета Федерико II в Неаполе; Естественный язык, от человека к машине от Университета Федерико II в Неаполе; Новые цифровые технологии от Университета Федерико II в Неаполе; Программирование на C: языковые фонды от Института Mines–Télécom; Программирование на C: модульное программирование и управление памятью от Дартмута; Программирование на C: расширенные типы данных от Дартмута; Основы Linux: интерфейс командной строки от Дартмута; Программирование на C: использование инструментов и библиотек Linux от Дартмута; Программирование на C: Начало работы от Дартмута; Программирование на C: указатели и управление памятью от Дартмута; Введение в теорию вычислений от Института Санта–Фе; Основы машинного обучения от Института Санта–Фе; Введение в FinTech от Университета Гонконга; FinTech: Этика и риски от Университета Гонконга; Блокчейн и FinTech: основы, приложения и ограничения от Университета Гонконга; DDoS–атаки и защита от Университета Колорадо; Безопасность облачных вычислений от системы Университета Колорадо; Введение в программирование на языке C: Инструкции по контролю над текстами от Университета Мадрида; Введение в программирование на языке C: Типы и структура от Университета Мадрида; Введение в программирование на языке C: Функции и указатели от Автономного университета Мадрида; Кибер–физические сети от Королевского технологического института KTH; Понимание сути Интернета: сети операторов от Института Института Mines–Télécom; Усовершенствованная алгоритмика и теория графов на Python от Института Mines–Télécom; Программирование Arduino, от новичка до ниндзя от Института Mines–Télécom; Кибербезопасность: атакует противников от Университета Рей Хуана Карлоса; Цифровая трансформация и команда ИТ от Университета Витватерсранда; Стратегические и трансформационные информационные технологии от Университета штата Мэриленд; Основы сетевой безопасности от Университета Ковентри; Введение в криптографию от Университета Ковентри; Информационная система по глобальной сети Интернет Microsoft Access от Университета Росарио; Основы кибербезопасности I сетей Пало–Альто от сетей Пало–Альто; Фонд кибербезопасности Академии сетей Пало–Альто от сетей Пало–Альто; Шлюз I кибербезопасности сетей Пало–Альто от сетей Пало–Альто; Шлюз ІІ кибербезопасности сетей Пало–Альто от сетей Пало–Альто; Основы ІІ кибербезопасности сетей Пало–Альто от сетей Пало–Альто; Блокчейн: основы и варианты использования от Академии ConsenSys; Архитектура сети и безопасности с VMware NSX от VMware.
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Start learning programming " Here is the best Platforms for you"

Step by step Help for you:
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Few more resources:
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Blockchain Training Center In Noida

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submitted by Deependra1092 to u/Deependra1092 [link] [comments]

Dash had a planned instamine - It was no accident. Today, the founders hold a huge amount of the Masternode Network and continue to reek profits off those who don't know.

I'm going to start this thread with a tl;dr and a few sources to back everything up. Then, I will go into detail and recreate a thread dnale0r posted a few years back.
.
  1. The founders of Dash could hold up to 25% of all current Dash in existence [1] [2] [3]
  2. The founders decreased the max circulation to give them a larger % hold on the network [1] [2]
  3. Masternodes were created to allow the founders to continue gaining from their instamine [1] [2]
And for completeness' sake, Dash Admitting the Instamine Happened (Just so the trolls can't deny it)
.
.
The Timeline
.
.
Proof of instamine
Look at these beautiful graphs that show how much Dash was being mined at the beginning.
4 hours after launch, 1 million Dash was mined
2 days after launch, 2 million Dash were mined, then growth very abruptly plateaus.
.
The part that doesn't add up
So here we have a coin, that no one really cares about because there was little information about it at the time, so you would obviously want to let as many people use it as you can.
Except Evan only made the coin mineable on Linux.. Which is a bit odd seeing as in January 2014, only 1.13% of computers ran Linux in any form.
.
The Bombshell
From the List of nodes that were mining Dash at the very beginning, it turns out 50 OF THEM were Amazon AWS and another 50 where Microsoft cloud computing. This makes up 100 out of 124 miners on the Dash network at the time - And considering how many shitcoins are out there, who would have the foresight to set up 100 cloud computers to mine the coin? (this source suggests 115/124 were cloud hosted)
.
I can go on for a long long time but everything left I have to say is in the many sources I left behind. I'm cutting it short here and letting everyone come to their own conclusions.
And by the way, there are some very honest and legitimate Dash supporters. I was discussing the instamine with one of them a couple days ago and he was very passionate about the project - Don't hate the community, hate the coin.
Peace xo
Edit: I'm working on giving the other side of the story in the comments, this time attacking Monero. Stay tuned
Edit2: Is Monero the Culprit?
Edit3: I seem to have offended a lot of Dash friends. Hopefully one day they'll try to back up their claims instead of trying to discredit my sources.
Edit4: This is a story well known to Dash friends, so don't be surprised if all the comments are just people shilling Dash. That's the reason I posted this, and hopefully next time someone brings up Dash you'll be equip with knowledge and won't fall for it.
Edit5: I've never seen tempMonero lose his shit before
submitted by OsrsNeedsF2P to CryptoCurrency [link] [comments]

⚡ Lightning Network Megathread ⚡

Last updated 2018-01-29
This post is a collaboration with the Bitcoin community to create a one-stop source for Lightning Network information.
There are still questions in the FAQ that are unanswered, if you know the answer and can provide a source please do so!

⚡What is the Lightning Network? ⚡

Explanations:

Image Explanations:

Specifications / White Papers

Videos

Lightning Network Experts on Reddit

  • starkbot - (Elizabeth Stark - Lightning Labs)
  • roasbeef - (Olaoluwa Osuntokun - Lightning Labs)
  • stile65 - (Alex Akselrod - Lightning Labs)
  • cfromknecht - (Conner Fromknecht - Lightning Labs)
  • RustyReddit - (Rusty Russell - Blockstream)
  • cdecker - (Christian Decker - Blockstream)
  • Dryja - (Tadge Dryja - Digital Currency Initiative)
  • josephpoon - (Joseph Poon)
  • fdrn - (Fabrice Drouin - ACINQ )
  • pmpadiou - (Pierre-Marie Padiou - ACINQ)

Lightning Network Experts on Twitter

  • @starkness - (Elizabeth Stark - Lightning Labs)
  • @roasbeef - (Olaoluwa Osuntokun - Lightning Labs)
  • @stile65 - (Alex Akselrod - Lightning Labs)
  • @bitconner - (Conner Fromknecht - Lightning Labs)
  • @johanth - (Johan Halseth - Lightning Labs)
  • @bvu - (Bryan Vu - Lightning Labs)
  • @rusty_twit - (Rusty Russell - Blockstream)
  • @snyke - (Christian Decker - Blockstream)
  • @JackMallers - (Jack Mallers - Zap)
  • @tdryja - (Tadge Dryja - Digital Currency Initiative)
  • @jcp - (Joseph Poon)
  • @alexbosworth - (Alex Bosworth - yalls.org)

Medium Posts

Learning Resources

Books

Desktop Interfaces

Web Interfaces

Tutorials and resources

Lightning on Testnet

Lightning Wallets

Place a testnet transaction

Altcoin Trading using Lightning

  • ZigZag - Disclaimer You must trust ZigZag to send to Target Address

Lightning on Mainnet

Warning - Testing should be done on Testnet

Atomic Swaps

Developer Documentation and Resources

Lightning implementations

  • LND - Lightning Network Daemon (Golang)
  • eclair - A Scala implementation of the Lightning Network (Scala)
  • c-lightning - A Lightning Network implementation in C
  • lit - Lightning Network node software (Golang)
  • lightning-onion - Onion Routed Micropayments for the Lightning Network (Golang)
  • lightning-integration - Lightning Integration Testing Framework
  • ptarmigan - C++ BOLT-Compliant Lightning Network Implementation [Incomplete]

Libraries

Lightning Network Visualizers/Explorers

Testnet

Mainnet

Payment Processors

  • BTCPay - Next stable version will include Lightning Network

Community

Slack

IRC

Slack Channel

Discord Channel

Miscellaneous

⚡ Lightning FAQs ⚡

If you can answer please PM me and include source if possible. Feel free to help keep these answers up to date and as brief but correct as possible
Is Lightning Bitcoin?
Yes. You pick a peer and after some setup, create a bitcoin transaction to fund the lightning channel; it’ll then take another transaction to close it and release your funds. You and your peer always hold a bitcoin transaction to get your funds whenever you want: just broadcast to the blockchain like normal. In other words, you and your peer create a shared account, and then use Lightning to securely negotiate who gets how much from that shared account, without waiting for the bitcoin blockchain.
Is the Lightning Network open source?
Yes, Lightning is open source. Anyone can review the code (in the same way as the bitcoin code)
Who owns and controls the Lightning Network?
Similar to the bitcoin network, no one will ever own or control the Lightning Network. The code is open source and free for anyone to download and review. Anyone can run a node and be part of the network.
I’ve heard that Lightning transactions are happening “off-chain”…Does that mean that my bitcoin will be removed from the blockchain?
No, your bitcoin will never leave the blockchain. Instead your bitcoin will be held in a multi-signature address as long as your channel stays open. When the channel is closed; the final transaction will be added to the blockchain. “Off-chain” is not a perfect term, but it is used due to the fact that the transfer of ownership is no longer reflected on the blockchain until the channel is closed.
Do I need a constant connection to run a lightning node?
Not necessarily,
Example: A and B have a channel. 1 BTC each. A sends B 0.5 BTC. B sends back 0.25 BTC. Balance should be A = 0.75, B = 1.25. If A gets disconnected, B can publish the first Tx where the balance was A = 0.5 and B = 1.5. If the node B does in fact attempt to cheat by publishing an old state (such as the A=0.5 and B=1.5 state), this cheat can then be detected on-chain and used to steal the cheaters funds, i.e., A can see the closing transaction, notice it's an old one and grab all funds in the channel (A=2, B=0). The time that A has in order to react to the cheating counterparty is given by the CheckLockTimeVerify (CLTV) in the cheating transaction, which is adjustable. So if A foresees that it'll be able to check in about once every 24 hours it'll require that the CLTV is at least that large, if it's once a week then that's fine too. You definitely do not need to be online and watching the chain 24/7, just make sure to check in once in a while before the CLTV expires. Alternatively you can outsource the watch duties, in order to keep the CLTV timeouts low. This can be achieved both with trusted third parties or untrusted ones (watchtowers). In the case of a unilateral close, e.g., you just go offline and never come back, the other endpoint will have to wait for that timeout to expire to get its funds back. So peers might not accept channels with extremely high CLTV timeouts. -- Source
What Are Lightning’s Advantages?
Tiny payments are possible: since fees are proportional to the payment amount, you can pay a fraction of a cent; accounting is even done in thousandths of a satoshi. Payments are settled instantly: the money is sent in the time it takes to cross the network to your destination and back, typically a fraction of a second.
Does Lightning require Segregated Witness?
Yes, but not in theory. You could make a poorer lightning network without it, which has higher risks when establishing channels (you might have to wait a month if things go wrong!), has limited channel lifetime, longer minimum payment expiry times on each hop, is less efficient and has less robust outsourcing. The entire spec as written today assumes segregated witness, as it solves all these problems.
Can I Send Funds From Lightning to a Normal Bitcoin Address?
No, for now. For the first version of the protocol, if you wanted to send a normal bitcoin transaction using your channel, you have to close it, send the funds, then reopen the channel (3 transactions). In future versions, you and your peer would agree to spend out of your lightning channel funds just like a normal bitcoin payment, allowing you to use your lightning wallet like a normal bitcoin wallet.
Can I Make Money Running a Lightning Node?
Not really. Anyone can set up a node, and so it’s a race to the bottom on fees. In practice, we may see the network use a nominal fee and not change very much, which only provides an incremental incentive to route on a node you’re going to use yourself, and not enough to run one merely for fees. Having clients use criteria other than fees (e.g. randomness, diversity) in route selection will also help this.
What is the release date for Lightning on Mainnet?
Lightning is already being tested on the Mainnet Twitter Link but as for a specific date, Jameson Lopp says it best
Would there be any KYC/AML issues with certain nodes?
Nope, because there is no custody ever involved. It's just like forwarding packets. -- Source
What is the delay time for the recipient of a transaction receiving confirmation?
Furthermore, the Lightning Network scales not with the transaction throughput of the underlying blockchain, but with modern data processing and latency limits - payments can be made nearly as quickly as packets can be sent. -- Source
How does the lightning network prevent centralization?
Bitcoin Stack Exchange Answer
What are Channel Factories and how do they work?
Bitcoin Stack Exchange Answer
How does the Lightning network work in simple terms?
Bitcoin Stack Exchange Answer
How are paths found in Lightning Network?
Bitcoin Stack Exchange Answer
How would the lightning network work between exchanges?
Each exchange will get to decide and need to implement the software into their system, but some ideas have been outlined here: Google Doc - Lightning Exchanges
Note that by virtue of the usual benefits of cost-less, instantaneous transactions, lightning will make arbitrage between exchanges much more efficient and thus lead to consistent pricing across exchange that adopt it. -- Source
How do lightning nodes find other lightning nodes?
Stack Exchange Answer
Does every user need to store the state of the complete Lightning Network?
According to Rusty's calculations we should be able to store 1 million nodes in about 100 MB, so that should work even for mobile phones. Beyond that we have some proposals ready to lighten the load on endpoints, but we'll cross that bridge when we get there. -- Source
Would I need to download the complete state every time I open the App and make a payment?
No you'd remember the information from the last time you started the app and only sync the differences. This is not yet implemented, but it shouldn't be too hard to get a preliminary protocol working if that turns out to be a problem. -- Source
What needs to happen for the Lightning Network to be deployed and what can I do as a user to help?
Lightning is based on participants in the network running lightning node software that enables them to interact with other nodes. This does not require being a full bitcoin node, but you will have to run "lnd", "eclair", or one of the other node softwares listed above.
All lightning wallets have node software integrated into them, because that is necessary to create payment channels and conduct payments on the network, but you can also intentionally run lnd or similar for public benefit - e.g. you can hold open payment channels or channels with higher volume, than you need for your own transactions. You would be compensated in modest fees by those who transact across your node with multi-hop payments. -- Source
Is there anyway for someone who isn't a developer to meaningfully contribute?
Sure, you can help write up educational material. You can learn and read more about the tech at http://dev.lightning.community/resources. You can test the various desktop and mobile apps out there (Lightning Desktop, Zap, Eclair apps). -- Source
Do I need to be a miner to be a Lightning Network node?
No -- Source
Do I need to run a full Bitcoin node to run a lightning node?
lit doesn't depend on having your own full node -- it automatically connects to full nodes on the network. -- Source
LND uses a light client mode, so it doesn't require a full node. The name of the light client it uses is called neutrino
How does the lightning network stop "Cheating" (Someone broadcasting an old transaction)?
Upon opening a channel, the two endpoints first agree on a reserve value, below which the channel balance may not drop. This is to make sure that both endpoints always have some skin in the game as rustyreddit puts it :-)
For a cheat to become worth it, the opponent has to be absolutely sure that you cannot retaliate against him during the timeout. So he has to make sure you never ever get network connectivity during that time. Having someone else also watching for channel closures and notifying you, or releasing a canned retaliation, makes this even harder for the attacker. This is because if he misjudged you being truly offline you can retaliate by grabbing all of its funds. Spotty connections, DDoS, and similar will not provide the attacker the necessary guarantees to make cheating worthwhile. Any form of uncertainty about your online status acts as a deterrent to the other endpoint. -- Source
How many times would someone need to open and close their lightning channels?
You typically want to have more than one channel open at any given time for redundancy's sake. And we imagine open and close will probably be automated for the most part. In fact we already have a feature in LND called autopilot that can automatically open channels for a user.
Frequency will depend whether the funds are needed on-chain or more useful on LN. -- Source
Will the lightning network reduce BTC Liquidity due to "locking-up" funds in channels?
Stack Exchange Answer
Can the Lightning Network work on any other cryptocurrency? How?
Stack Exchange Answer
When setting up a Lightning Network Node are fees set for the entire node, or each channel when opened?
You don't really set up a "node" in the sense that anyone with more than one channel can automatically be a node and route payments. Fees on LN can be set by the node, and can change dynamically on the network. -- Source
Can Lightning routing fees be changed dynamically, without closing channels?
Yes but it has to be implemented in the Lightning software being used. -- Source
How can you make sure that there will be routes with large enough balances to handle transactions?
You won't have to do anything. With autopilot enabled, it'll automatically open and close channels based on the availability of the network. -- Source
How does the Lightning Network stop flooding nodes (DDoS) with micro transactions? Is this even an issue?
Stack Exchange Answer

Unanswered Questions

How do on-chain fees work when opening and closing channels? Who pays the fee?
How does the Lightning Network work for mobile users?
What are the best practices for securing a lightning node?
What is a lightning "hub"?
How does lightning handle cross chain (Atomic) swaps?

Special Thanks and Notes

  • Many links found from awesome-lightning-network github
  • Everyone who submitted a question or concern!
  • I'm continuing to format for an easier Mobile experience!
submitted by codedaway to Bitcoin [link] [comments]

So you want in on bitcoin?

Guide for Noobs

Simple and Not A Lot of Money

Guide for Not Noobs

Less Simple

-setup an account on coinbase.com, move dollars into your account, setup an account on gdax.com (same company, same login), move your cash from coinbase to gdax, buy your coins on GDAX at Market, fees are cheaper 0.25% versus 1.5%
-consider buying alternative coins supported by coinbase

No Fees

-all of the above but use GDAX's Limit/Buy, zero fees, but you have to wait for the market to dip below your buy price

More Money Available

-setup several Limit/Buy orders at different price points to capture dips when you are away

More Control but More Complex

-it's possible coinbase could go out of business, move some or most of your coins to a personal hardware wallet like a Trezor or Ledger Nano S, made in Czech Republic and France respectively
-consider using other exchanges with different fees and coin support
-consider buying other alternative coins supported by other exchanges

You Are Very Responsible

-create a paper wallet, put it in a safe, be warned it's like a visual bearer instrument, if you lose it or someone takes a picture of it...it's gone, but you have complete control over your money/asset

DO NOT EVER

-buy more than you can lose, it's early wild west days, the market could easily come crashing down
-panic sell, the market fluctuates regularly by 20%, thus far it has ALWAYS recovered, people that try to sell during a fall/dip and buy at the bottom usually miss time it and lose
-store your keys on your computer or phone unless its small amount, these are the two most vulnerable routes to hacking and simple hardware failure resulting in loss
-attempt to daytrade and time the best prices unless your real life job is day trading
-get addicted to watching the market, pay attention watch for dips, but don't let it crowd out your work or free time
-keep a LOT of cash or coin in an exchange, it is very easy to mistype and buy or sell far more than you meant to, exchanges can disappear with your coins
-buy a hardware wallet from anyone other than the company who makes it, i.e. do not buy one on Amazon, it is possible some third person hacked it and could steal your coin

PROBABLY DON'T

-limit sells until the far future when market volatility is down, flash crashes have happened and recovered, if you had all your coin in limit sells it would be gone
-margin trade unless your real life job is day trading
-stop buys or stop sells unless your real life job is day trading

DO

-hold your coins, your coin may be worth x10 or more in value in the future, e.g. if bitcoin replaced gold, bitcoin would be worth ~x70 the current value
-buy small amounts over time DCA, this might not seem intuitive but it spreads your risk out, reduces risk of buying at all time highs (ATH) and more likely to catch lows (dips), a fluctuation of $100 in price is small if the eventual value is worth x10 or more in the future
-keep a small amount of cash on an exchange always, when there is a lot of traffic/trading which happens during dips, you are much more likely to be able to make trades on an exchange rather than with your own wallet

REMEMBER

-if you don't have your coin in your own wallet, it's not your coin. this is not a problem until you have a lot of value and you want to keep it safe from a bankruptcy, unscrupulous people/exchanges, or unforeseen acts. if it's a small amount compared to your income it's an acceptable risk, if not then move it to a wallet
-in the days of fake news not everything you read is true, in fact there are armies of people shilling for 'pick a random coin'; some are malicious, some uninformed, and some willfully uninformed
-if your value starts to become large, dig deep into how your asset/currencies work just like you would for any other purchase, understanding how it works helps you understand if it will be a success, e.g. understand the difference between PoW vs PoS or what a hard fork is
-some coins especially newer ones are scams, a good indication of if it is not a scam is how long the coin has been around
-most bitcoin hard forks so far have not been successful with some exceptions
-btc is the accepted short-name for bitcoin on most (but not all) exchanges, xbt is also common in EUR-land

Other Risks

-holding your own coin requires personal responsibility, it is easy to lose and not be able to recover it if you are not careful
-again, do not buy more coin than you can lose
-transaction speeds which are slow are a serious problem in bitcoin scaling
-there is less innovation and more argument going on in bitcoin than some other coins, bitcoin is large enough that consensus is difficult, future change is less likely than with some other coins, there are other side solutions to bitcoins problems that may not require bitcoin to change much
-bitcoin.org IS the generally accepted bitcoin website, NOT bitcoin.com
-important other risks compiled by themetalfriend
-coinbase has insurance up to $250k USD for you USD Wallet which DOES NOT cover your bitcoins or other crypto currencies, they claim to have separate insurance for your crypto currency but it is unclear how much

Community

there are a lot of memes
-hodl, GameKyuubi mistyped hold and it spread
-to the moon, where everyone hopes the price will go
-coin on a rollercoaster, it is highly volitile market you will see this during fluctuations
-this is gentlemen, via Liquid_child , here
-lambo/roadster, a car people want to buy when they get rich
-the cost of pizza, early days someone bought a pizza for 10,000btc which is worth over ~80million USD today
-tesla/vehicle with a bitcoin chart, cytranic posted a picture that spread
-intersting guide by stos313 , here. I do not agree with everything but it has a lot of useful information.

CORRECTIONS

Edit: Adding in user comments.
Edit: Crosslinking to a more Beginner Version.
Edit: Note in an earlier edit of this guide I said.
note that most of the development on bitcoin is by employees of one company, it is open source but their priorities may not align with the community
This is not true. Blockstream appears to have a high representation but not an overwhelming amount. You can compare blockstream's employee page and bitcoin's commits in the last year. Thank you to lclc_ , trilli0nn , and Holographiks for pointing this out. See this for a detailed break down.
Edit: Clarification that FDIC insurance does NOT cover crypto currency/assets.
Edit: Clarity on who owns bitcoin.org

Good Luck and Hodl.

Please comment if your experience is different. Or call out things I missed.
submitted by cryptocurrencypeople to Bitcoin [link] [comments]

Mining for Profitability - Horizen (formerly ZenCash) Thanks Early GPU Miners

Mining for Profitability - Horizen (formerly ZenCash) Thanks Early GPU Miners
Thank you for inviting Horizen to the GPU mining AMA!
ZEN had a great run of GPU mining that lasted well over a year, and brought lots of value to the early Zclassic miners. It is mined using Equihash protocol, and there have been ASIC miners available for the algorithm since about June of 2018. GPU mining is not really profitable for Horizen at this point in time.
We’ve got a lot of miners in the Horizen community, and many GPU miners also buy ASIC miners. Happy to talk about algorithm changes, security, and any other aspect of mining in the questions below. There are also links to the Horizen website, blog post, etc. below.
So, if I’m not here to ask you to mine, hold, and love ZEN, what can I offer? Notes on some of the lessons I’ve learned about maximizing mining profitability. An update on Horizen - there is life after moving on from GPU mining. As well as answering your questions during the next 7 days.
_____________________________________________________________________________________________________

Mining for Profitability - Horizen (formerly ZenCash) Thanks Early GPU Miners

Author: Rolf Versluis - co-founder of Horizen

In GPU mining, just like in many of the activities involved with Bitcoin and cryptocurrencies, there is both a cycle and a progression. The Bitcoin price cycle is fairly steady, and by creating a personal handbook of actions to take during the cycle, GPU miners can maximize their profitability.
Maximizing profitability isn't the only aspect of GPU mining that is important, of course, but it is helpful to be able to invest in new hardware, and be able to have enough time to spend on building and maintaining the GPU miners. If it was a constant process that also involved losing money, then it wouldn't be as much fun.

Technology Progression

For a given mining algorithm, there is definitely a technology progression. We can look back on the technology that was used to mine Bitcoin and see how it first started off as Central Processing Unit (CPU) mining, then it moved to Graphical Processing Unit (GPU) mining, then Field Programmable Gate Array (FPGA), and then Application Specific Integrated Circuit (ASIC).
Throughout this evolution we have witnessed a variety of unsavory business practices that unfortunately still happen on occasion, like ASIC Miner manufacturers taking pre-orders 6 months in advance, GPU manufacturers creating commercial cards for large farms that are difficult for retail customers to secure and ASIC Miner manufacturers mining on gear for months before making it available for sale.
When a new crypto-currency is created, in many cases a new mining algorithm is created also. This is important, because if an existing algorithm was used, the coin would be open to a 51% attack from day one, and may not even be able to build a valid blockchain.
Because there's such a focus on profitable software, developers for GPU mining applications are usually able to write a mining application fairly rapidly, then iterate it to the limit of current GPU technology. If it looks like a promising new cryptocurrency, FPGA stream developers and ASIC Hardware Developers start working on their designs at the same time.
The people who create the hashing algorithms run by the miners are usually not very familiar with the design capabilities of Hardware manufacturers. Building application-specific semiconductors is an industry that's almost 60 years old now, and FPGA’s have been around for almost 35 years. This is an industry that has very experienced engineers using advanced design and modeling tools.
Promising cryptocurrencies are usually ones that are deploying new technology, or going after a big market, and who have at least a team of talented software developers. In the best case, the project has a full-stack business team involving development, project management, systems administration, marketing, sales, and leadership. This is the type of project that attracts early investment from the market, which will drive the price of the coin up significantly in the first year.
For any cryptocurrency that's a worthwhile investment of time, money, and electricity for the hashing, there will be a ASIC miners developed for it. Instead of fighting this technology progression, GPU miners may be better off recognizing it as inevitable, and taking advantage of the cryptocurrency cycle to maximize GPU mining profitability instead.

Cryptocurrency Price Cycle

For quality crypto projects, in addition to the one-way technology progression of CPU -> GPU -> FPGA -> ASIC, there is an upward price progression. More importantly, there is a cryptocurrency price cycle that oscillates around an overall upgrade price progression. Plotted against time, a cycle with an upward progressions looks like a sine wave with an ever increasing average value, which is what we see so far with the Bitcoin price.

Cryptocurrency price cycle and progression for miners
This means mining promising new cryptocurrencies with GPU miners, holding them as the price rises, and being ready to sell a significant portion in the first year. Just about every cryptocurrency is going to have a sharp price rise at some point, whether through institutional investor interest or by being the target of a pump-and-dump operation. It’s especially likely in the first year, while the supply is low and there is not much trading volume or liquidity on exchanges.
Miners need to operate in the world of government money, as well as cryptocurrency. The people who run mining businesses at some point have to start selling their mining proceeds to pay the bills, and to buy new equipment as the existing equipment becomes obsolete. Working to maximize profitability means more than just mining new cryptocurrencies, it also means learning when to sell and how to manage money.

Managing Cash for Miners

The worst thing that can happen to a business is to run out of cash. When that happens, the business usually shuts down and goes into bankruptcy. Sometimes an investor comes in and picks up the pieces, but at the point the former owners become employees.
There are two sides to managing cash - one is earning it, the other is spending it, and the cryptocurrency price cycle can tell the GPU miner when it is the best time to do certain things. A market top and bottom is easy to recognize in hindsight, and harder to see when in the middle of it. Even if a miner is able to recognize the tops and bottoms, it is difficult to act when there is so much hype and positivity at the top of the cycle, and so much gloom and doom at the bottom.
A decent rule of thumb for the last few cycles appears to be that at the top and bottom of the cycle BTC is 10x as expensive compared to USD as the last cycle. Newer crypto projects tend to have bigger price swings than Bitcoin, and during the rising of the pricing cycle there is the possibility that an altcoin will have a rise to 100x its starting price.
Taking profits from selling altcoins during the rise is important, but so is maintaining a reserve. In order to catch a 100x move, it may be worth the risk to put some of the altcoin on an exchange and set a very high limit order. For the larger cryptocurrencies like Bitcoin it is important to set trailing sell stops on the way up, and to not buy back in for at least a month if a sell stop gets triggered. Being able to read price charts, see support and resistance areas for price, and knowing how to set sell orders are an important part of mining profitability.

Actions to Take During the Cycle

As the cycle starts to rise from the bottom, this is a good time to buy mining hardware - it will be inexpensive. Also to mine and buy altcoins, which are usually the first to see a price rise, and will have larger price increases than Bitcoin.
On the rise of the cycle, this is a good time to see which altcoins are doing well from a project fundamentals standpoint, and which ones look like they are undergoing accumulation from investors.
Halfway through the rise of the cycle is the time to start selling altcoins for the larger project cryptos like Bitcoin. Miners will miss some of the profit at the top of the cycle, but will not run out of cash by doing this. This is also the time to stop buying mining hardware. Don’t worry, you’ll be able to pick up that same hardware used for a fraction of the price at the next bottom.
As the price nears the top of the cycle, sell enough Bitcoin and other cryptocurrencies to meet the following projected costs:
  • Mining electricity costs for the next 12 months
  • Planned investment into new miners for the next cycle
  • Additional funds needed for things like supporting a family or buying a Lambo
  • Taxes on all the capital gains from the sale of cryptocurrencies
It may be worth selling 70-90% of crypto holdings, maintaining a reserve in case there is second upward move caused by government bankruptcies. But selling a large part of the crypto is helpful to maintaining profitability and having enough cash reserves to make it through the bottom part of the next cycle.
As the cycle has peaked and starts to decline, this is a good time to start investing in mining facilities and other infrastructure, brush up on trading skills, count your winnings, and take some vacation.
At the bottom of the cycle, it is time to start buying both used and new mining equipment. The bottom can be hard to recognize.
If you can continue to mine all the way through bottom part of the cryptocurrency pricing cycle, paying with the funds sold near the top, you will have a profitable and enjoyable cryptocurrency mining business. Any cryptocurrency you are able to hold onto will benefit from the price progression in the next higher cycle phase.

An Update on Horizen - formerly ZenCash

The team at Horizen recognizes the important part that GPU miners played in the early success of Zclassic and ZenCash, and there is always a welcoming attitude to any of ZEN miners, past and present. About 1 year after ZenCash launched, ASIC miners became available for the Equihash algorithm. Looking at a chart of mining difficulty over time shows when it was time for GPU miners to move to mining other cryptocurrencies.

Horizen Historical Block Difficulty Graph
Looking at the hashrate chart, it is straightforward to see that ASIC miners were deployed starting June 2018. It appears that there was a jump in mining hashrate in October of 2017. This may have been larger GPU farms switching over to mine Horizen, FPGA’s on the network, or early version of Equihash ASIC miners that were kept private.
The team understands the importance of the cryptocurrency price cycle as it affects the funds from the Horizen treasury and the investments that can be made. 20% of each block mined is sent to the Horizen non-profit foundation for use to improve the project. Just like miners have to manage money, the team has to decide whether to spend funds when the price is high or convert it to another form in preparation for the bottom part of the cycle.
During the rise and upper part of the last price cycle Horizen was working hard to maximize the value of the project through many different ways, including spending on research and development, project management, marketing, business development with exchanges and merchants, and working to create adoption in all the countries of the world.
During the lower half of the cycle Horizen has reduced the team to the essentials, and worked to build a base of users, relationships with investors, exchanges, and merchants, and continue to develop the higher priority software projects. Lower priority software development, going to trade shows, and paying for business partnerships like exchanges and applications have all been completely stopped.
Miners are still a very important part of the Horizen ecosystem, earning 60% of the block reward. 20% goes to node operators, with 20% to the foundation. In the summer of 2018 the consensus algorithm was modified slightly to make it much more difficult for any group of miners to perform a 51% attack on Horizen. This has so far proven effective.
The team is strong, we provide monthly updates on a YouTube live stream on the first Wednesday of each month where all questions asked during the stream are addressed, and our marketing team works to develop awareness of Horizen worldwide. New wallet software was released recently, and it is the foundation application for people to use and manage their ZEN going forward.
Horizen is a Proof of Work cryptocurrency, and there is no plan to change that by the current development team. If there is a security or centralization concern, there may be change to the algorithm, but that appears unlikely at this time, as the hidden chain mining penalty looks like it is effective in stopping 51% attacks.
During 2019 and 2020 the Horizen team plans to release many new software updates:
  • Sidechains modification to main software
  • Sidechain Software Development Kit
  • Governance and Treasury application running on a sidechain
  • Node tracking and payments running on a sidechain
  • Conversion from blockchain to a Proof of Work BlockDAG using Equihash mining algorithm
After these updates are working well, the team will work to transition Horizen over to a governance model where major decisions and the allocation of treasury funds are done through a form of democratic voting. At this point all the software developed by Horizen is expected to be open source.
When the governance is transitioned, the project should be as decentralized as possible. The goal of decentralization is to enable resilience and preventing the capture of the project by regulators, government, criminal organizations, large corporations, or a small group of individuals.
Everyone involved with Horizen can be proud of what we have accomplished together so far. Miners who were there for the early mining and growth of the project played a large part in securing the network, evangelizing to new community members, and helping to create liquidity on new exchanges. Miners are still a very important part of the project and community. Together we can look forward to achieving many new goals in the future.

Here are some links to find out more about Horizen.
Horizen Website – https://horizen.global
Horizen Blog – https://blog.horizen.global
Horizen Reddit - https://www.reddit.com/Horizen/
Horizen Discord – https://discord.gg/SuaMBTb
Horizen Github – https://github.com/ZencashOfficial
Horizen Forum – https://forum.horizen.global/
Horizen Twitter – https://twitter.com/horizenglobal
Horizen Telegram – https://t.me/horizencommunity
Horizen on Bitcointalk – https://bitcointalk.org/index.php?topic=2047435.0
Horizen YouTube Channel – https://www.youtube.com/c/Horizen/
Buy or Sell Horizen
Horizen on CoinMarketCap – https://coinmarketcap.com/currencies/zencash/

About the Author:

Rolf Versluis is Co-Founder and Executive Advisor of the privacy oriented cryptocurrency Horizen. He also operates multiple private cryptocurrency mining facilities with hundreds of operational systems, and has a blog and YouTube channel on crypto mining called Block Operations.
Rolf applies his engineering background as well as management and leadership experience from running a 60 person IT company in Atlanta and as a US Navy nuclear submarine officer operating out of Hawaii to help grow and improve the businesses in which he is involved.
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Thank you again for the Ask Me Anything - please do. I'll be checking the post and answering questions actively from 28 Feb to 6 Mar 2019 - Rolf
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