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Gridcoin 5.0.0.0-Mandatory "Fern" Release

https://github.com/gridcoin-community/Gridcoin-Research/releases/tag/5.0.0.0
Finally! After over ten months of development and testing, "Fern" has arrived! This is a whopper. 240 pull requests merged. Essentially a complete rewrite that was started with the scraper (the "neural net" rewrite) in "Denise" has now been completed. Practically the ENTIRE Gridcoin specific codebase resting on top of the vanilla Bitcoin/Peercoin/Blackcoin vanilla PoS code has been rewritten. This removes the team requirement at last (see below), although there are many other important improvements besides that.
Fern was a monumental undertaking. We had to encode all of the old rules active for the v10 block protocol in new code and ensure that the new code was 100% compatible. This had to be done in such a way as to clear out all of the old spaghetti and ring-fence it with tightly controlled class implementations. We then wrote an entirely new, simplified ruleset for research rewards and reengineered contracts (which includes beacon management, polls, and voting) using properly classed code. The fundamentals of Gridcoin with this release are now on a very sound and maintainable footing, and the developers believe the codebase as updated here will serve as the fundamental basis for Gridcoin's future roadmap.
We have been testing this for MONTHS on testnet in various stages. The v10 (legacy) compatibility code has been running on testnet continuously as it was developed to ensure compatibility with existing nodes. During the last few months, we have done two private testnet forks and then the full public testnet testing for v11 code (the new protocol which is what Fern implements). The developers have also been running non-staking "sentinel" nodes on mainnet with this code to verify that the consensus rules are problem-free for the legacy compatibility code on the broader mainnet. We believe this amount of testing is going to result in a smooth rollout.
Given the amount of changes in Fern, I am presenting TWO changelogs below. One is high level, which summarizes the most significant changes in the protocol. The second changelog is the detailed one in the usual format, and gives you an inkling of the size of this release.

Highlights

Protocol

Note that the protocol changes will not become active until we cross the hard-fork transition height to v11, which has been set at 2053000. Given current average block spacing, this should happen around October 4, about one month from now.
Note that to get all of the beacons in the network on the new protocol, we are requiring ALL beacons to be validated. A two week (14 day) grace period is provided by the code, starting at the time of the transition height, for people currently holding a beacon to validate the beacon and prevent it from expiring. That means that EVERY CRUNCHER must advertise and validate their beacon AFTER the v11 transition (around Oct 4th) and BEFORE October 18th (or more precisely, 14 days from the actual date of the v11 transition). If you do not advertise and validate your beacon by this time, your beacon will expire and you will stop earning research rewards until you advertise and validate a new beacon. This process has been made much easier by a brand new beacon "wizard" that helps manage beacon advertisements and renewals. Once a beacon has been validated and is a v11 protocol beacon, the normal 180 day expiration rules apply. Note, however, that the 180 day expiration on research rewards has been removed with the Fern update. This means that while your beacon might expire after 180 days, your earned research rewards will be retained and can be claimed by advertising a beacon with the same CPID and going through the validation process again. In other words, you do not lose any earned research rewards if you do not stake a block within 180 days and keep your beacon up-to-date.
The transition height is also when the team requirement will be relaxed for the network.

GUI

Besides the beacon wizard, there are a number of improvements to the GUI, including new UI transaction types (and icons) for staking the superblock, sidestake sends, beacon advertisement, voting, poll creation, and transactions with a message. The main screen has been revamped with a better summary section, and better status icons. Several changes under the hood have improved GUI performance. And finally, the diagnostics have been revamped.

Blockchain

The wallet sync speed has been DRASTICALLY improved. A decent machine with a good network connection should be able to sync the entire mainnet blockchain in less than 4 hours. A fast machine with a really fast network connection and a good SSD can do it in about 2.5 hours. One of our goals was to reduce or eliminate the reliance on snapshots for mainnet, and I think we have accomplished that goal with the new sync speed. We have also streamlined the in-memory structures for the blockchain which shaves some memory use.
There are so many goodies here it is hard to summarize them all.
I would like to thank all of the contributors to this release, but especially thank @cyrossignol, whose incredible contributions formed the backbone of this release. I would also like to pay special thanks to @barton2526, @caraka, and @Quezacoatl1, who tirelessly helped during the testing and polishing phase on testnet with testing and repeated builds for all architectures.
The developers are proud to present this release to the community and we believe this represents the starting point for a true renaissance for Gridcoin!

Summary Changelog

Accrual

Changed

Most significantly, nodes calculate research rewards directly from the magnitudes in EACH superblock between stakes instead of using a two- or three- point average based on a CPID's current magnitude and the magnitude for the CPID when it last staked. For those long-timers in the community, this has been referred to as "Superblock Windows," and was first done in proof-of-concept form by @denravonska.

Removed

Beacons

Added

Changed

Removed

Unaltered

As a reminder:

Superblocks

Added

Changed

Removed

Voting

Added

Changed

Removed

Detailed Changelog

[5.0.0.0] 2020-09-03, mandatory, "Fern"

Added

Changed

Removed

Fixed

submitted by jamescowens to gridcoin [link] [comments]

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submitted by Calm_Eye_2949 to u/Calm_Eye_2949 [link] [comments]

It's finally here! Tautulli v2 [beta] (formerly PlexPy v2)

It's finally here! Tautulli v2 [beta] (formerly PlexPy v2).

The long awaited for PlexPy v2 is finally here with a new name Tautulli! Also check us out on the new Plex Labs!
I'm looking for some brave people to help me test some new feature before I fully release them. It's a very big update so I want to make sure everything is working.
Warning: This may mess up your PlexPy install and/or your database. You have been warned. Only join the beta if you are serious about testing and reporting bugs, otherwise I strongly recommend you wait until the final release.

Changelog

v2.0.0-beta (2017-12-18)

v2.0.1-beta (2017-12-19)

v2.0.2-beta (2017-12-24)

v2.0.3-beta (2017-12-25)

v2.0.4-beta (2017-12-29)

v2.0.5-beta (2017-12-31)

v2.0.6-beta (2017-12-31)

v2.0.7-beta (2018-01-01)

v2.0.8-beta (2018-01-03)

v2.0.9-beta (2018-01-03)

v2.0.10-beta (2018-01-04)

v2.0.11-beta (2018-01-05)

v2.0.12-beta (2018-01-07)

v2.0.13-beta (2018-01-13)

v2.0.14-beta (2018-01-20)

v2.0.15-beta (2018-01-27)

v2.0.16-beta (2018-01-30)

v2.0.17-beta (2018-02-03)

v2.0.18-beta (2018-02-12)

v2.0.19-beta (2018-02-16)

v2.0.20-beta (2018-02-24)

v2.0.21-beta (2018-03-04)

v2.0.22-beta (2018-03-09)

"I'm interested! Where do I sign up?"

Assuming you already have PlexPy installed using git, all you need to do is follow these steps:
  1. Backup your database! Go to the PlexPy Settings > General tab > Backup Database. You will need to restore this if something messes up. I'm not helping you if you mess up your database and you didn't create a backup.
  2. Shut down PlexPy by going to Settings > Shutdown.
  3. Using your shell/command line, run the following from the PlexPy folder:
    git fetch git checkout beta 
  4. Start Tautulli as normal.
  5. Post below if you find any bugs (include logs). Please don't post on GitHub issues or the Plex forum thread with bugs/issues from the beta test. If you do, I will laugh at you and delete your post.
    • Please read the issues guidelines before report any problems, and refer to the FAQ for common issues.
    • New features can be submitted on FeatHub (use the search to see if it has already been requested). Please read the feature request guidelines before requesting new features.
    • Join the Discord Server chat for faster help and general chit chat. (Note: the Gitter chat is no longer being used.)
If you want to revert back to the version of PlexPy before beta testing:
Warning: You will not be able to use your v2 database with v1!
  1. Shut down Tautulli by going to Settings > Shutdown.
  2. Restore your backed up plexpy.db file (it can be found in the backup folder).
  3. Using your shell/command line, run the following from the PlexPy folder:
    git checkout master 
  4. Start PlexPy as normal.
Buy me a coffee if you want to support the project! - PayPal | Bitcoin: 3FdfJAyNWU15Sf11U9FTgPHuP1hPz32eEN

Answers to your questions:

  • Why did you call it Tautulli?
    • Because it sounds cool and means "to watch or monitor" in Inuktitut.
  • I don't like the new name!
    • That's too bad. Also, that is not a question.
  • When will v2 be out of beta?
    • When I feel like there are no more major bugs with it. SoonTM.
  • Is there an iOS app?
    • No, there isn't. It costs money to be an iOS developer.
submitted by SwiftPanda16 to PleX [link] [comments]

Era Swap Network White Paper

Era Swap Network White Paper

Era Swap Network

White Paper



DISCLAIMER
This Whitepaper is for Era Swap Network. Its purpose is solely to provide prospective community members with information about the Era Swap Ecosystem & Era Swap Network project. This paper is for information purposes only and does not constitute and is not intended to be an offer of securities or any other financial or investment instrument in any jurisdiction.
The Developers disclaim any and all responsibility and liability to any person for any loss or damage whatsoever arising directly or indirectly from (1) reliance on any information contained in this paper, (2) any error, omission or inaccuracy in any such information, or (3) any action resulting therefrom
Digital Assets are extremely high-risk, speculative products. You should be aware of the risks involved and fully consider before participating in Digital assets whether it’s appropriate for you. You should only participate if you are an experienced investor with sophisticated knowledge of financial markets and you fully understand the risks associated with digital assets. We strongly advise you to take independent professional advice before making any investment or participating in any way. You should check what rules and protections apply to your respective jurisdictions before investing or participating in any way. The Creators & community will not compensate you for any losses from trading, investment or participating in any way. You should read whitepaper carefully before participating and consider whether these products are right for you.

TABLE OF CONTENT

· Abstract
· Introduction to Era Swap Network
· Development Overview
· Era Swap Utility Platform
· Alpha-release Development Plan
· Era Swap Network Version 1: Specification
· Bunch Structure: 10
· Converting ES-ERC20 to ES-Na:
· Conclusion:
· Era Swap Ecosystem
· Social Links

Abstract

The early smart contracts of Era Swap Ecosystem like TimeAlly, Newly Released Tokens, Assurance, BetDeEx of Era Swap Ecosystem, are deployed on Ethereum mainnet. These smart contracts are finance-oriented (DeFi), i.e. most of the transactions are about spending or earning of Era Swap tokens which made paying the gas fees in Ether somewhat intuitive to the user (withdrawal charges in bank, paying tax while purchasing burgers) but transactions that are not token oriented like adding a nominee or appointee voting also needs Ether to be charged. As more Era Swap Token Utility platform ideas kept appending to the Era Swap Main Whitepaper, more non-financial transaction situations arise like updating status, sending a message, resolving a dispute and so on. Paying extensively for such actions all day and waiting for the transaction to be included in a block and then waiting for enough block confirmations due to potential chain re-organizations is counter-intuitive to existing free solutions like Facebook, Gmail. This is the main barrier that is stopping Web 3.0 from coming to the mainstream.
As alternatives to Ethereum, there are few other smart contract development platforms that propose their own separate blockchain that features for higher transaction throughput, but they compromise on decentralization for improving transaction speeds. Moreover, the ecosystem tools are most advancing in Ethereum than any other platform due to the massive developer community.
With Era Swap Network, the team aims to achieve scalability, speed and low-cost transactions for Era Swap Ecosystem (which is currently not feasible on Ethereum mainnet), without compromising much on trustless asset security for Era Swap Community users.

Introduction to Era Swap Network

Era Swap Network (ESN) aims to solve the above-mentioned problems faced by Era Swap Ecosystem users by building a side-blockchain on top of Ethereum blockchain using the Plasma Framework.
Era Swap Network leverages the Decentralisation and Security of Ethereum and the Scalability achieved in the side-chain, this solves the distributed blockchain trilema. In most of the other blockchains, blocks are a collection of transactions and all the transactions in one block are mined by a miner in one step. Era Swap Network will consist of Bunches of Blocks of Era Swap Ecosystem Transactions.

Decentralization

Layer 2


Scalable and Secure

A miner mines all the blocks in a bunch consequently and will commit the bunch-root to the ESN Plasma Smart Contract on Ethereum mainnet.

Development Overview
Initially, we will start with a simple Proof-of-Authority (PoA) based consensus of EVM to start the development and testing of Era Swap Ecosystem Smart Contracts as quickly as possible on the test-net. We will call this as an alpha-release of ESN test-net and only internal developers will work with this for developing smart contracts for Era Swap Ecosystem. User’s funds in a Plasma implementation with a simple consensus like PoA are still secured as already committed bunch-roots cannot be reversed.
Eventually, we want to arrive on a more control-decentralized consensus algorithm like Proof-of-Stake (PoS) probably, so that even if the chain operator shuts down their services, a single Era Swap Ecosystem user somewhere in the world can keep the ecosystem alive by running software on their system and similarly more people can join to decentralize the control further. In this PoS version, we will modify the Parity Ethereum client in such a way, that at least 50% of transaction fees collected will go to the Luck Pool of NRT Smart Contract on Ethereum mainnet and rest can be kept by miner of the blocks/bunch of blocks if they wish. After achieving such an implementation, we will release this as a beta version to the community for testing the software on their computers with Kovan ERC20 Era Swaps (Ethereum test-net).

Era Swap Decentralised Ecosystem
Following platforms are to be integrated:
  1. Era Swap Token Contract (adapted ERC20 on Ethereum) The original asset will lie on Ethereum to avoid loss due to any kind of failure in ESN.
  2. Plasma Manager Contract (on Ethereum) To store ESN bunch headers on Ethereum.
  3. Reverse Plasma Manager Contract (on ESN) Bridge to convert ES to ES native and ES native to ES. User deposits ES on Mainnet Plasma, gives proof on ESN and gets ES native credited to their account in a decentralised way.
  4. NRT Manager Contract (on Ethereum or on ESN) If it is possible to send ES from an ESN contract to luck pool of NRT Manager Contract on Ethereum, then it’s ok otherwise, NRT Manager will need to be deployed on ESN for ability to add ES to luck pool.
  5. Era Swap Wallet (React Native App for managing ESs and ES natives) Secure wallet to store multiple private keys in it, mainly for managing ES and ES native, sending ES or ES native, also for quick and easy BuzCafe payments.
  6. TimeAlly (on Ethereum or on ESN) On whichever chain NRT Manager is deployed, TimeAlly would be deployed on the same chain.
  7. Assurance (on Ethereum or on ESN) On whichever chain NRT Manager is deployed, TimeAlly would be deployed on the same chain.
  8. DaySwappers (on ESN) KYC manager for platform. For easily distributing rewards to tree referees.
  9. TimeSwappers (on ESN) Freelance market place with decentralised dispute management.
  10. SwappersWall (on ESN) Decentralised social networking with power tokens.
  11. BuzCafe (on ESN) Listing of shops and finding shops easily and quick payment.
  12. BetDeEx (on ESN) Decentralised Prediction proposals, prediction and results.
  13. DateSwappers (on ESN) Meeting ensured using cryptography.
  14. ComputeEx (on Ethereum / centralised way) Exchange assets.
  15. Era Swap Academy (on ESN / centralised way) Learn. Loop. Leap. How to implement ES Academy is not clear. One idea is if content is constantly being modified, then subscription expired people will only have the hash of old content while new content hash is only available to people who have done Dayswapper KYC and paid for the course. Dayswapper KYC is required because this way people won’t share their private keys to someone else.
  16. Value of Farmers (tbd) The exchange of farming commodities produced by farmers in VoF can be deposited to warehouses where the depositors will get ERC721 equivalent tokens for their commodities (based on unique tagging).
  17. DeGameStation (on ESN) Decentralised Gaming Station. Games in which players take turns can be written in Smart Contract. Games like Chess, Poker, 3 Patti can be developed. Users can come to DeGameStation and join an open game or start a new game and wait for other players to join.

Alpha-release Development Plan
  1. Deploying Parity Node customized according to Era Swap Whitepaper with PoA consensus.
  2. Setting up Plasma Smart Contracts.
  3. Creating a bridge for ERC20 Swap from Ethereum test-net to ESN alpha test-net.

Alpha Version
Era Swap Network Version 1 : Specification
The Version 1 release of ESN plans to fulfill the requirements for political decentralisation and transparency in dApps of Era Swap Ecosystem using Blockchain Technology. After acquiring sufficient number of users, a version 2 construction of ESN will be feasible to enable administrative decentralization, such that the Era Swap Ecosystem will be run and managed by the Era Swap Community and will no longer require the operator to support for it's functioning.
Era Swap Network (ESN) Version 1 will be a separate EVM-compatible sidechain attached to Ethereum blockchain as it’s parent chain. ESN will achieve security through Plasma Framework along with Proof-of-Authority consensus for faster finality. The idea behind plasma framework is to avoid high transaction fees and high transaction confirmation times on Ethereum mainnet by instead doing all the ecosystem transactions off-chain and only post a small information to an Ethereum Smart Contract which would represent hash of plenty of ecosystem transactions. Also, to feature movement of Era Swap Tokens from Ethereum blockchain to ESN using cryptographic proof, reverse plasma of Ethereum on ESN will be implemented.
Also, submitting hash of each ESN blocks to ESN Plasma Smart Contract on Ethereum would force ESN to have a block time equal to or more than Ethereum’s 15 second time as well as it would be very much costly for operator to post lot of hashes to an Ethereum Smart Contract. This is why, merkle root of hashes of bunch of blocks would instead be submitted to ESN Plasma Smart Contact on Ethereum.
Actors involved in the ESN:
  1. Block Producer Nodes Lesser the number of nodes, quicker is the block propagation between block producers which can help quick ecosystem transactions. We find that 7 block producers hosted on different could hosting companies and locations reduces the risk of single point of failure of Era Swap Ecosystem and facilitates 100% uptime of dApps. Block Producer Nodes will also be responsible to post the small information to the Blockchain.
  2. Block Listener Nodes Rest of the nodes will be Block Listeners which will sync new blocks produced by the block producer nodes. Plenty of public block listener nodes would be setup in various regions around the world for shorter ping time to the users of Era Swap Ecosystem. Users would submit their Era Swap Ecosystem transactions to one of these public nodes, which would relay them to rest of the Era Swap Network eventually to the block producer nodes which would finalize a new block including the user transaction.
  3. Bunch Committers This will be an instance in the block producers which will watch for new blocks confirmed on ESN and will calculate bunch merkle roots and will submit it to ESN Plasma Smart Contract. This instance will also post hash of new Ethereum blocks to ESN (after about 10 confirmations) for moving assets between both the blockchain.
  4. Users These will be integrating with dApps which would be connected to some public ESN nodes or they can install a block listner node themselves. They can sign and send transactions to the node which they are connected to and then that node will relay their transactions to block producer nodes who would finalise a block including their transaction.

Bunch Structure

A Bunch Structure in Smart Contract will consist of the following:
• Start Block Number: It is the number of first ESN block in the bunch.
• Bunch Depth: It is Merkle Tree depth of blocks in the bunch. For e.g. If bunch depth is 3, there would be 8 blocks in the bunch and if bunch depth is 10, there would be 1024 blocks in the bunch. Bunch depth of Bunches on ESN Plasma Contract is designed to be variable. During the initial phases of ESN, it would be high, for e.g. 15, to avoid ether expenditure and would be decreased in due course of time.
• Transactions Mega Root: This value is the merkle root of all the transaction roots in the bunch. This is used by Smart Contract to verify that a transaction was sent on the chain.
• Receipts Mega Root: This value is the merkle root of all the receipt roots in the bunch. This is used to verify that the transaction execution was successful.
• Timestamp: This value is the time when the bunch proposal was submitted to the smart contract. After submission, there is a challenge period before it is finalised.

Converting ES-ERC20 to ERC-NA and BACK

On Ethereum Blockchain, the first class cryptocurrency is ETH and rest other tokens managed by smart contracts are second class. On ESN, there is an advancement to have Era Swaps as the first class cryptocurrency. This cryptocurrency will feature better user experience and to differentiate it from the classic ERC20 Era Swaps, it will be called as Era Swap Natives (ES-Na). According to the Era Swap Whitepaper, maximum 9.1 Million ES will exist which will be slowly released in circulation every month.
Era Swaps will exist as ES-ERC20 as well as in form of ES-Na. One of these can be exchanged for the other at 1:1 ratio.
Following is how user will convert ES-ERC20 to ES-Na:
  1. User will give allowance to a Deposit Smart Contract, and following that call deposit method to deposit tokens to the contract.
  2. On transaction confirmation, user will paste the transaction hash on a portal which will generate a Proof of Deposit string for the user. This string is generated by fetching all the transactions in the Ethereum Block and generating a Transaction Patricia Merkle Proof to prove that user’s transaction was indeed included in the block and the Receipts Patricia Merkle Proof to confirm that the user’s transaction was successful.
  3. Using the same portal, user will submit the generated proofs to a Smart Contract on ESN, which would release funds to user. Though, user will have to wait for the Etheruem block roots to be posted to ESN after waiting for confirmations which would take about 3 minutes. Once, it’s done user’s proofs will be accepted and will receive exact amount of ES- Na on ESN.
Following is how user will convert ES-Na to ES-ERC20:
  1. ES-Na being first class cryptocurrency, user will simply send ES-Na to a contract.
  2. User will paste the transaction hash on a portal which will generate a Proof of Deposit for the user. Again ES-Na being first class cryptocurrency, Transaction Patricia Merkle Proof is enough to prove that user’s transaction was indeed included in the block. Another thing which will be generated is the block inclusion proof in the bunch.
  3. User will have to wait for the bunch confirmation to the Plasma Smart Contract and once it’s done, user can send the proof to the Plasma Smart Contract to receive ES-ERC20.

HARD Exit

Since the blocks are produced and transactions are validated by few block producers, it exposes a possibility for fraud by controlling the block producer nodes. Because ESN is based on the Plasma Model, when failure of sidechain occurs or the chain halts, users can hard exit their funds directly from the Plasma Smart Contract on Ethereum by giving a Proof of Holdings.

HOld ES Tokens Swapping with New ES Tokens

The old ES Tokens will be valueless as those tokens will not be accepted in ESN because of NRT (New Released Tokens) and TimeAlly contracts on mainnet which is causing high gas to users, hence reducing interactions. Also, there was an event of theft of Era Swap Tokens and after consensus from majority of holders of Era Swap Tokens; it was decided to create a new contract to reverse the theft to secure the value of Era Swap Tokens of the community. Below is the strategy for swapping tokens:
TimeAlly and TSGAP: Majority of Era Swap Community have participated in TimeAlly Smart Contract in which their tokens are locked for certain period of time until which they cannot move them. Such holders will automatically receive TimeAlly staking of specific durations from the operator during initialization of ESN.
Liquid Tokens: Holders of Liquid Era Swap Tokens have to transfer the old tokens to a specified Ethereum wallet address managed by team. Following that, team will audit the token source of the holder (to eliminate exchange of stolen tokens) and send new tokens back to the wallet address.

Post-Genesis Tokens Return Program

Primary asset holding of Era Swap tokens will exist on Ethereum blockchain as an ERC20 compatible standard due to the highly decentralised nature of the blockchain. Similar to how users deposit tokens to an cryptocurrency exchange for trading and then withdraw the tokens back, users will deposit tokens to ESN Contract to enter Era Swap Ecosystem and they can withdraw it back from ESN Contract for exiting from ecosystem network. The design of the token system will be such that, it will be compatible with the future shift (modification or migration of ESN version 1) to ESN version 2, in which an entirely new blockchain setup might be required.
To manage liquidity, following genesis structure will be followed:

Holder ES-ERC20 ES-Na
Team Wallet 1.17 billion (Circulating Supply) 0
Locked in Smart Contract 7.93 billion (pending NRT releases) 9.1 billion
Though it looks like there are 9.1 * 2 = 18.2 Billion ES, but the cryptographic design secures that at any point in time at least a total of 9.1 billion ES (ES-ERC20 + ES-Na) will be locked. To unlock ES-Na on ESN, an equal amount of ES-ERC20 has to be locked on Ethereum and vice-versa.
9.1 billion ES-ERC20 will be issued by ERC20 smart contract on Ethereum Blockchain, out of which the entire circulating supply (including liquid and TimeAlly holdings) of old ES will be received to a team wallet.
TimeAlly holdings of all users will be converted to ES-Na and distributed on ESN TimeAlly Smart Contract by team to the TimeAlly holders on their same wallet address.
Liquid user holdings will be sent back to the users to the wallet address from which they send back old ES tokens (because some old ES are deposited on exchange wallet address).
ES-Na will be issued in the genesis block to an ESN Manager Smart Contract address. It will manage all the deposits and withdrawals as well as NRT releases.

Attack Vectors


Following are identified risks to be taken care of during the development of ESN:
Network Spamming: Attackers can purchase ES from the exchange and make a lot of transactions between two accounts. This is solved by involving gas fees. A setting of 200 nanoES minimum gas price will be set, which can be changed as per convenience.
DDoS: Attackers can query public nodes for computationally heavy output data. This will overload the public node with requests and genuine requests might get delayed. Block producers RPC is private, so they will continue to produce blocks. To manage user’s denial of service, the provider in dApps needs to be designed in such a way such that many public nodes will be queried simple information (let’s say latest block number) and the one which response quickly to user will be selected.
AWS is down: To minimize this issue due to cloud providers down, there will be enough nodes on multiple cloud providers to ensure at least one block producer is alive.
User deposit double spending: User deposits ES on Ethereum, gets ES-Na on ESN. Then the issue happens that there are re-org on ETH mainnet and the user’s transaction is reversed. Since ETH is not a fixed chain and as per PoW 51% attack can change the blocks. As Ethereum is now enough mature and by statistics forked blocks are at most of height 2. So it is safe to consider 15 confirmations.
Exit Game while smooth functioning: User starts a hard exit directly from Plasma Smart Contract on Ethereum, then spends his funds from the plasma chain too. To counter this, the exit game will be disabled, only when ESN halts, i.e. fails to submit block header within the time the exit game starts. This is because it is difficult to mark user’s funds as spent on ESN.
Vulnerability in Ecosystem Smart Contracts: Using traditional methods to deploy smart contracts results in a situation where if a bug is found later, it is not possible to change the code. Using a proxy construction for every ecosystem smart contract solves this problem, and changing a proxy can be given to a small committee in which 66% of votes are required, this is to prevent a malicious change of code due to compromising of a single account or similar scenario.
ChainID replay attacks: Using old and traditional ways to interact with dApps can cause loss to users, hence every dApp will be audited for the same.

Conclusion

Era Swap Network is an EVM-compatible sidechain attached to the Ethereum blockchain through Plasma Framework. This allows off-chain processing of Era Swap Ecosystem transactions and posting only the hash of the bunch to Ethereum. This greatly reduces the high network fee and confirmation time issues faced by the current Era Swap Ecosystem DApps deployed on Ethereum. Also, having a separate EVM-compatible blockchain tailored to Era Swap Ecosystem improves the user experience to a higher extent. Since by design, Plasma Framework makes the Era Swap Network as secure as the Ethereum Network, user's funds on the network would be secure as well.
We believe Era Swap Network will help scale dApps of Era Swap Ecosystem to onboard the increasing numbers of users.


Era Swap Ecosystem
Era Swap Ecosystem consist of multiple interlinked platforms which is powered by Era swap (ES) token, a decentralized utility token to be used on below utility platforms. Users can access the Platforms through Era Swap Life which is the Single Sign on (SSO) gateway to the one world of Era Swap Ecosystem.
Era Swap Life: https://eraswap.life/
TimeAlly DApp -> Decentralized Token Vesting: https://www.timeally.io/
BetDeEx -> Decentralized prediction platform: https://www.betdeex.com/
Swappers Wall -> Social Time Ledgerise: https://timeswappers.com/swapperswall
TimeSwappers -> Global P2P marketplace: https://timeswappers.com/
BuzCafe -> Connects local P2P outlets: https://buzcafe.com/
DaySwappers -> Unique Affiliate Program: https://dayswappers.com/
Era Swap Academy -> E-mart for skill development: https://eraswap.academy/
Value of Farmers (VOF) -> Farming ecosystem: http://valueoffarmers.org/ coming soon
ComputeEx -> P2P lending and borrowing: https://computeex.net/ coming soon
DateSwappers -> Next gen dating: coming soon
Smart Contract address

Era Swap Token (ES)
https://etherscan.io/address/0xef1344bdf80bef3ff4428d8becec3eea4a2cf574#code

Newly Released Token (NRT) https://etherscan.io/address/0x20ee679d73559e4c4b5e3b3042b61be723828d6c#code

TimeAlly DApp
https://etherscan.io/address/0x5630ee5f247bd6b61991fbb2f117bbeb45990876#code

BetDeEx DApp https://etherscan.io/address/0x42225682113E6Ed3616B36B4A72BbaE376041D7c#code
TSGAP DApp
https://etherscan.io/address/0xbad9af4db5401b7d5e8177a18c1d69c35fc03fd3#code

White Paper
Era Swap Whitepaper: https://eraswaptoken.io/pdf/eraswap_whitepaper.pdf
Era Swap Light Paper: https://eraswaptoken.io/pdf/eraswap_lightpaper.pdf

Howey Test
Howey Test: https://eraswaptoken.io/era-swap-howey-test-letter-august7-2018.php

Era Swap SOCIAL LINKS
Telegram: https://t.me/eraswap
Twitter: https://twitter.com/eraswaptec
Facebook: https://www.facebook.com/eraswap/
Instagram: https://www.instagram.com/eraswap/
BitcoinTalk: https://bitcointalk.org/index.php?topic=5025979.msg45502457
Youtube: https://www.youtube.com/channel/UCGCP4f5DF1W6sbCjS6y3T1g
LinkedIn: https://www.linkedin.com/company/eraswap/
Reddit: https://www.reddit.com/useEraSwap
Medium: https://medium.com/@eraswap
Tumblr: https://eraswap.tumblr.com/
Mix: https://mix.com/eraswap
Pinterest: https://www.pinterest.com/eraswapt/
GitHub: https://github.com/KMPARDS/EraSwapSmartContracts
submitted by EraSwap to u/EraSwap [link] [comments]

IPFS for flashcards. Cards could be used by any program.

Background:
I’m a teacher who’s very interested in technology. I’m planning on going to grad school for educational technology. I’ve been interested in and following the developments of decentralized networks/technology but definitely not treating it as a new hammer that I’m making everything into a nail to use on. I also don’t believe in using technology for tech’s sake, especially in education.
I used flashcards as part of my Chinese studies to great success, and now I use Quizlet to help my students review and store knowledge points. There are third party apps like Kahoot and Gimkit that can let you host a live competition using your cards. My students love it, but the import/export process is kind of annoying and can generate errors like lost information or mixed up cards.
Idea:
I propose to make an Universal Flashcard Standard. I want the cards to be hosted on a cloud server (or the IPFS, here to ask advice about that) that would allow users to instantly access their cards on any platform without worry that the platform they are using will disappear along with their data. Data about answers guessed correctly and incorrectly could also be included to make seamless SRS(Spaced repetition Software) experiences across platforms. The time you spend using the flashcards in a game would update your use history such that those cards are presented to you less frequently in subsequent sessions. I’d prefer the IPFS than a cloud server account or even github account that someone owns, because developers might feel wary of joining the network if they feel they could be suddenly cut off from the data.
I believe this could unlock a lot of potential for innovation. When someone has a new game idea that uses flashcards, users could instantly try it out with their existing sets. New apps could also be developed for more convenient flashcard generation, and it would improve cross platform functionality.
Technical considerations:

  1. The format of the data. I’d likely start with something that can easily use the data of the most popular current sites Quizlet and Anki. In my own experiments I’ve started using Json files and have successfully imported Quizlet files.
  2. Cloud/IPFS hosting (what I could use your advice on!) no one’s going to want to use this service if it costs money, even micropayments. From my understanding of IPFS, if the cards are used and adopted, they will become free to users, but someone will have to pay for an initial node to store files that haven’t been accessed yet. If we allowed media files only in the form of links, the files could be all text, and therefore very small. So the cots wouldn’t be so high. I’m not sure what the total data use would be so I’m not sure of the cost of running the server. I’m debating setting up my own server (Aliyun would be the best cause I’m in China, but might need help setting it up) or using cloudflare/pinata. I wish they had bitcoin payments so I could accept donations for the project and people could see the money was going righ to server upkeep, but it seems they don’t have the option.
  3. Data sharing methods and data privacy issues. I’m thinking that cause all card sets on IPFS are publicly viewable by default. People can clone your decks and change their own version. If you want a private deck, you could first encrypt it before putting it on IPFS. I have some more ideas though about how people could make collaborative notes for shared decks that might complicate this.
  4. Syncing issues. I think IPFS handles this pretty will with versioning? client side apps might need some kind of reviewing mode for handling unwanted discrepancies.
I’m still rather new to programming. I’m learning python and trying to test out some of my ideas already. In this simple text based flashcard program I wrote, I included an importer that converts Quizlet export files into the format I use.
To bootstrap adoption, I want to make a webcrawler app that takes all of the public decks currently on Quizlet and Ankiwebb, converts them to our universal format and puts them on IPFS. That way as soon as someone makes an app that uses our format, users instantly have access to all of their cards. As a new programmer I also could use some guidance on how to achieve this.
Current project (haven’t really started implementing any of these ideas yet) https://github.com/Jewcub/PythonFlashCards
Thanks!
submitted by Jewcub_Rosenderp to ipfs [link] [comments]

Groestlcoin September 2019 Development Release/Update!

For a more interactive view of changes, click here
In our current world; bordering on financial chaos, with tariff wars, Brexit and hyperinflation rife, you can count on Groestlcoin to consistently produce innovation that strikes to take the power away from the few and into the many, even after a full five and a half years of solid development.
Here is what the team has already announced in the last 3 months since the last development update:

What's Being Released Today?

Groestl Nodes

What am I?

Groestl Nodes aims to map out and compare the status of the Groestlcoin mainnet and testnet networks. Even though these networks share the same protocol, there is currently no way to directly compare these coins in a single location. These statistics are essential to evaluate the relative health of both networks.

Features

Source - Website

Groestlcoin Transaction Tool

What am I?

This is a tool for creating unsigned raw Groestlcoin transactions and also to verify existing transactions by entering in the transaction hex and converting this to a human-readable format to verify that a transaction is correct before it is signed.

Features

SourceDownload

Groestlcoin AGCore

What am I?

AGCore is an Android app designed to make it easier to run a Groestlcoin Core node on always-on Android appliances such as set-top boxes, Android TVs and repurposed tablets/phones. If you are a non-technical user of Groestlcoin and want an Android app that makes it easy to run a Groestlcoin Core node by acting as a wrapper, then AG Core is the right choice for you.

What's Changed?

Source - Download

Groestlcoin Electrum

What's Changed?

Android Electrum-Specific

OSXWindowsWindows StandaloneWindows PortableLinux - Android
Server SourceServer Installer SourceClient SourceIcon SourceLocale Source

Android Wallet – Including Android Wallet Testnet

What am I?

Android Wallet is a BIP-0032 compatible hierarchial deterministic Groestlcoin Wallet, allowing you to send and receive Groestlcoin via QR codes and URI links.

V7.11.1 Changes

Groestlcoin Java Library SourceSource - DownloadTestnet Download

Groestlwallet

What am I?

Groestlwallet is designed to protect you from malware, browser security holes, even physical theft. With AES hardware encryption, app sandboxing, keychain and code signatures, groestlwallet represents a significant security advance over web and desktop wallets, and other mobile platforms.
Simplicity is groestlwallet's core design principle. Because groestlwallet is "deterministic", your balance and entire transaction history can be restored from just your recovery phrase.

iOS 0.7.3 Changes

Android v89 Changes

iOS SourceAndroid Source - Android DownloadiOS Download

Groestlcoinomi Released

What am I?

Groestlcoinomi is a lightweight thin-client Groestlcoin wallet based on a client-server protocol.

Groestlcoinomi v1.1 Desktop Changes

Groestlcoinomi Android v1.6 Changes

Groestlcoin Java Library SourceAndroid Source
Android DownloadWindows DownloadMac OS DownloadLinux Download

Groestlcoin BIP39 Tool

What's Changed?

Source - Download
submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

[PSA] Dogecoin Wallet version 1.4 released. You must update.

WARNING: DO NOT send your wallet.dat file or dogecoin folder to anyone. There have been reports of people offering to help others by asking them to send their files to them so they can help. DO NOT do this. Scam attempt picture
Always encrypt your wallet! I can't express this enough. You should use a strong password longer than 15 characters. This password should contain numbers, symbols, and some capitalization! There is no need to have your wallet open 24 hours a day. Open it only when you need it. See - 'Getting Started' on the side bar.
This entire post has been written to be as close to ELI5 (Explain it like I'm 5) as possible - By request! If anyone wants to add/fix/correct anything in this message, please send a message to the mods <<-- Click blue text.
All blue text in this post can be clicked on. The blue text is a link to a picture, site or download file.
A very important message/reminder below.
25 Jan 1.5 pre-releases have started.
http://www.reddit.com/dogecoin/comments/1uhpwf/dogecoin_for_mac_14_topic_thread/
OLD VERSIONS The 1.4 update for the dogecoin wallet has been released. This update addresses the block chain error that occurred. This update is mandatory meaning you have to do this update. Also further down the page you can read up about the block chain. You MUST make sure you're on the correct block chain and the old block chain has been removed.
For a Windows computer the version must be 1.4. - 1.4.1 just released! See below
For a Apple Mac Computer the version must be 1.4
Download links:
[Windows Download Link](https://github.com/dogecoin/dogecoin/releases/download/1.4/dogecoin-qt-v14-Win.zip) <<--Click to start download
Windows Download Link 1.4.1 UPDATED 19JAN
Mac Download Link <<--Click to start download
Mac users can join this thread if there are any problems
Android (phone): Please see This post
To update, simply download the new version from the download link above. Open the downloaded file and extract the contents of the downloaded file into any new folder or location on your computer. If you put the files into a folder you can name the folder anything you want but make sure you remember that this is the latest version of the software.
You don't have to remove your folder containing the old version of the wallet. You can place it in a folder called 'Old versions of dogecoin wallet' if you like.
Now you can click on the Dogecoin icon contained in the new folder to open your version 1.4 wallet.
What happens if I get an error when I open the new wallet?
An error was reported called "11DbException"
If this happens Download this file and place it in the same folder as your updated wallet. Open the file you just downloaded called "Dogecoin OPEN' and wait. This might take 2 or 3 minutes.
Also jtlarousse has found a solution that worked on Windows. Please follow carefully and make backups before starting.
Reebzy might have found a solution for Apple Mac
Blockchain fork 101: The block chain is a ledger or document created containing every transaction that has ever happened. This file can be quite large. Bitcoins ledger is over 15GB. At some point this document/ledger split into two separate documents known as a fork.
How do I know if I am on the right block chain?
Go to your newly updated dogecoin wallet and open it. Click on Help>>Debug next Observe the current block number
*Note the example numbers in the pictures might be out of date by the time you read them
Now go over to http://dogechain.info/chain/Dogecoin . This website is the official Dogecoin blockchain website. Check the block number they're reporting
The number you found in your wallet and the number reported on the website should close. There might be a difference of 100 blocks depending on when you last refreshed your wallet or how long it took for you to get from one step to the next step in this guide and if the dogechain website is lagging.
I'M NOT ON THE CORRECT BLOCK CHAIN
My numbers are very different. How do I get back onto the right block chain?
IMPORTANT
For windows:
1)Close down the Dogecoin wallet client.
2)Go to your data folder: C:\Users[your windows log-in name]\AppData\Roaming\DogeCoin
3)Delete the Dogecoin.conf file. Do not delete the wallet.dat file!
4)Download this update file and place it into the Dogecoin folder where the other file was deleted.
For Apple Mac:
1)Close down the Dogecoin wallet client.
2)Go to your data folder: ~/Libarary/Application Support/Dogecoin
3)Delete the Dogecoin.conf file. Do not delete the wallet.dat file!
4)Download this update file and place it into the Dogecoin folder where the other file was deleted.
Next visit this post by Netcodepool for instructions on how to manually download the correct block chain and install it.
Much Thanks. 
Edit: Some posts were removed from this thread. To limit confusion.
Check this post for details about mining pools that were/are using the wrong fork.
Did you send coins only to find out you're on the wrong chain? See this post to get them back
An Apple Mac support thread has been made by voidref (The mac developer). If you're having troubles please see this thread
Some shibes have reported their wallets wont sync. Please check to make sure your firewall, antivirus, malware scanner or similar programs are not blocking it the wallet. You can add rules to these programs to allow the wallet to make contact with the internet. It's not advised but possible to also disable the software for a short amount of time. Don't forget to enable the software again afterwards.
Is your wallet crashing? Try this helpful tip from gandhikahn or if you're using windows try the 1.4.1 update above.
submitted by 42points to dogecoin [link] [comments]

Decred Journal – July 2018

Note: you can read this on Medium, GitHub or old Reddit to view all the links

Development

dcrd: Several steps towards multipeer downloads completed: an optimization to use in-memory block index and a new 1337 chain view. Maintenance: improved test coverage, upgrading dependency management system and preparing for the upcoming Go 1.11 release.
dcrwallet: A big change introducing optional privacy-preserving SPV sync mode was merged. In this mode dcrwallet does not download the full blockchain but only gets the "filters", uses them to determine which blocks it needs and fetches them from random nodes on the network. This has on-disk footprint of 300-400 MB and sync time of minutes, compared to ~3.4 GB and sync time of hours for full sync (these are rough estimates).
jy-p: the server side of SPV (in dcrd) was deployed in v1.2.0, the client side of SPV (in dcrwallet) is in our next release, v1.3.0. Still some minor bugs in SPV that are being worked out. There will be an update to add the latest features from BIP 157/158 in the next few months. SPV will be optional in v1.3.0, but it will become the default after we get a proper header commitment for it (#general)
Decrediton: besides regular bugfixes and design improvements, several components are being developed in parallel like SPV mode, Politeia integration and Trezor support.
Politeia: testing started on mainnet, thanks to everyone who is participating. A lot of testing, bugfixing and polishing is happening in preparation for full mainnet launch. There are also a few missing features to be added before launch, e.g. capacity to edit a proposal and versioning for that, discussion to remain open once voting starts. Decrediton integration is moving forward, check out this video for a demo and this meta issue for the full checklist.
Trezor: Decrediton integration of initial Trezor support is in progress and there is a demo.
Android: app design version 2.0 completed.
dcrdata: development of several chart visualizations was completed and is awaiting deployment. Specifically, voting agendas and historic charts are merged while ticket pool visualization is in testing.
atomicswap: @glendc is seeking reviews of his Ethereum support pull request.
Dev activity stats for July: 252 active PRs, 220 master commits, 34,754 added and 12,847 deleted lines spread across 6 repositories. Contributions came from 6-10 developers per repository. (chart)

Network

Hashrate: the month started at 40.5 and ended at 51.6 PH/s, with a low of 33.3 and a new all time high of 68.4 PH/s. F2Pool is leading with 40-45%, followed by the new BeePool at 15-25% and coinmine.pl at 18-23%.
Staking: 30-day average ticket price is 92.6 DCR (-2.1). The price started the month at 94.6 and quickly retreated to month's low of 85 until 1,860 tickets were bought within a single period (versus target 720). This pushed the pool of tickets to 41,970 (2.5% above target), which in turn caused 10 price increases in a row to the month's high of 100.4. This was the highest ticket price seen on the new ticket price algorithm which has been in effect since Jul 2017. Second half of the month there was unusually low volatility between 92 and 94 DCR per ticket. Locked DCR held between 3.75 and 3.87 million or 46.6-48.0% of supply (+0.1% from previous peak).
Nodes: there are 212 public listening and 216 normal nodes per dcred.eu. Version distribution: 67% on v1.2.0 (+10%), 24% on v1.1.2 (-1%), 7% on v1.1.0 (-7%). Node count data is not perfect but we can see the steady trend of upgrading to v1.2.0. This version of dcrd is notable for serving compact filters. The increased count of such full nodes allows the developers to test SPV client mode in preparations for the upcoming v1.3.0 release.

ASICs

Obelisk posted three updates in July. For the most recent daily updates join their Discord.
New miner from iBeLink: DSM7T hashes Blake256 at 7 TH/s or Blake2b at 3.5 TH/s, consumes 2,100 W and costs $3,800, shipping Aug 5-10.
There were also speculations about the mysterious Pangolin Whatsminer DCR with the speed of 44 TH/s at 2,200 W and the cost of $3,888, shipping November. If you know more about it please share with us in #pow-mining channel.

Integrations

Meet new stake pool: dcrpool.ibitlin.com has 1% fees and is hosted by @life.
An interesting detail about decredbrasil.com stake pool was posted in chat:
emiliomann: stakebrasil is one of the pools with the lowest number of missed and expired tickets. It was one of the first and has a smaller percentage than the most recent ones who haven’t had the time to do so. (...) The Brazilian pool should be the one with the more servers spread around the world: 6 to decrease the latency. This is to explain to you why the [pool fee] rate of 5% (currently around 0.06 DCR) on the reward is also one of the highest. girino: 8 voting wallets now. I just finished setting up a new one yesterday. All of them in different datacenters, 3 in europe, 3 in north america, 1 in brazil and one in asia. We also have 3 more servers, 1 for the front end, one for "stats" and one for dcrdata. (#general)
On the mining side, Luxor started a new set of pool servers inside mainland China, while zpool has enabled Decred mining.
StatX announced Decred integration into their live dashboard and public chat.
Decred was added to Satowallet with BTC and ETH trading pairs. Caution: do your best to understand the security model before using any wallet software.

Adoption

VotoLegal update:
Marina Silva is the first presidential candidate in Brazil using blockchain to keep all their electoral donations transparent and traceable. VotoLegal uses Decred technology, awesome use case! (reddit)
The story was covered by criptonoticias.com (translated) and livecoins.com.br (translated), the latter received hundreds of upvotes and comments on brasil.
On the OTC trading front, @i2Rav from i2trading reports:
We continue to see institutional interest in DCR. Large block buyers love the concept of staking as a way to earn additional income and appreciate the stakeholder rights it affords them. Likening a DCR investment to an activist shareholdebondholder gives these institutions some comfort while dipping their toes into a burgeoning new asset class.

Marketing

Targeted advertising reports released for June and July. As usual, reach @timhebel for full versions.
Big news in June: Facebook reversed their policy on banning crypto ads. ICO ads are still banned, but we should be OK. My team filled out the appeal today, so we should hopefully hear something within a few days. (u/timhebel on reddit)
After couple weeks Facebook finally responded to the appeal and the next step is to verify the domain name via DNS.
A pack of Stakey Telegram stickers is now available. Have fun!

Events

Attended:
Upcoming:

Media

Featured articles:
Articles:
Some articles are omitted due to low quality or factual errors.
Translations:
Videos:

Community Discussions

Community stats:
Comm systems update:
Articles:
Twitter: Ari Paul debates "There can be only one" aka "highlander argument".
Reddit and Forum: how ticket pool size influences average vote time; roadmap concerns; why ticket price was volatile; ideas for using Reddit chat for dcrtrader and alternative chat systems; insette's write-up on Andrew Stone's GROUP proposal for miner-validated tokenization that is superior to current OP_RETURN-based schemes; James Liu's paper to extend atomic swaps to financial derivatives; what happens when all DCR are mined, tail emission and incentives for miners.
Chats: why tickets don't have 100% chance to vote; ideas for more straightforward marketing; long-running chat about world economy and failure modes; @brandon's thoughts on tokenizing everything, ICOs, securities, sidechains and more; challenges of staking with Trezor; ideas how to use CryptoSteel wallet with Decred; why exchange can't stake your coins, how staking can increase security, why the function to export seed from wallet is bad idea and why dcrwallet doesn't ever store the seed; ticket voting math; discussion about how GitHub workflow forces to depend on modern web browser and possible alternatives; funding marketing and education in developing markets, vetting contractors based on deliverables, "Decred contractor clearance", continued in #governance.
#dex channel continues to attract thinkers and host chats about influence of exchanges, regulation, HFT, lot sizes, liquidity, on-chain vs off-chain swaps, to name a few topics. #governance also keeps growing and hosting high quality conversations.

Markets

In July DCR was trading in USD 56-76 and BTC 0.0072-0.0109 range. A recovery started after a volume boost of up to $10.5 m on Fex around Jul 13, but once Bitcoin headed towards USD ~8,000 DCR declined along with most altcoins.
WalletInvestor posted a prediction on dcrtrader.
Decred was noticed in top 10 mineable coins on coinmarketcap.com.

Relevant External

One million PCs in China were infected via browser plugins to mine Decred, Siacoin and Digibyte.
In a Unchained podcast episode David Vorick shared why ASICs are better than GPUs even if they tend toward mining centralization and also described Obelisk's new Launchpad service. (missed in June issue)
Sia project moved to GitLab. The stated reasons are to avoid the risk of depending on centralized service, to avoid vendor lock-in, better continuous integration and testing, better access control and the general direction to support decentralized and open source projects.
Luxor explained why PPS pools are better.
@nic__carter published slides from his talk "An Overview of Governance in Blockchains" from Zcon0.
This article arguing the importance of governance systems dates back to 2007.
Bancor wallet was hacked. This reminds us about the fake feeling of decentralizaion, that custody of funds is dangerous and that smart contracts must have minimum complexity and be verifiable.
Circle announced official Poloniex mobile apps for iOS and Android.
On Jul 27 Circle announced delisting of 9 coins from Poloniex that led to a loss of 23-81% of their value same day. Sad reminder about how much a project can depend on a single centralized exchange.
DCR supply and market cap is now correct on onchainfx.com and finally, on coinmarketcap.com. Thanks to @sumiflow, @jz and others doing the tedious work to reach out the various websites.

About This Issue

This is the 4th issue of Decred Journal. It is mirrored on GitHub, Medium and Reddit. Past issues are available here.
Most information from third parties is relayed directly from source after a minimal sanity check. The authors of Decred Journal have no ability to verify all claims. Please beware of scams and do your own research.
Chat links were changed to riot.im from the static web viewer that suffered from UX issues (filed here and here). We will consider changing back to the static viewer once they are resolved because it does not require javascript to read chat logs.
In the previous issue we introduced "Featured articles". The judgement is subjective by definition, if you feel unfairness or want to debate the criteria please check this issue.
Feedback is appreciated: please comment on Reddit, GitHub or #writers_room.
Contributions are also welcome, some areas are adding content, pre-release review or translations to other languages.
Credits (Slack names, alphabetical order): bee, Haon and Richard-Red.
submitted by jet_user to decred [link] [comments]

Much concern: Dogecoin block chain HAS SPLIT

Hey shibes,

Much bad news. THE DOGECOIN BLOCK CHAIN HAS FORKED. This is a bad thing.

ELI5: Your client is constantly downloading blocks and processing them, which is the way that Dogecoin works. Ten days ago, the developers made a change to the Dogecoin client that raised the limit of coins in a block from 500 million to 10 billion. So now some folks are running Dogecoin clients without that change, because they are older, and some folks are running newer clients. In block 42279, a transaction that broke the rule -- containing more than 500 million DOGE -- has prevented these older clients from advancing on the correct chain and they are now working on a bad ledger.
If you are attempting to send transactions and you hit this behavior, you ARE adding transactions to the bad chain.
There is a current risk of double spending and a lot of people are working on a bad ledger, both with mining and their personal clients. STOP sending DOGE (including pool payouts) until this situation is resolved by people that know more than I do. It might appear that you are still advancing past the bad block but your client might be going down the wrong fork!
Details: My client is synced and fine, and I sent a transaction in the last few minutes, but I've heard from several friends that they are stuck on a prior block have forked off the main ledger after block 42279. Apparently, 10 days ago, there was a commit to the dogecoin client that raised the transaction limit from 500 million DOGE to 10 billion DOGE:
https://github.com/dogecoin/dogecoin/commit/2ee5cb3396df66c10fef34480a183d00e3bec635
In block 42279 a 500m DOGE transaction was submitted which broke the block chain on clients older than that commit. I have heard from three separate folks now that their clients are stuck on block 42279 advancing on a separate Dogecoin chain.
http://dogechain.info/tx/3119125a77e1bee6f0786af4e15a8eea3ba1b64081e121796b552637a76f2eb1
We have a blockchain split on our hands. Bitcoin went through one of these too. It's going to need intervention.
What do I do? Stop sending DOGE and wait. I would also suggest waiting until the mining situation is sorted out, because there is a double-spend risk right now. You can view your client's current block in the Debug menu, under Help, for the Qt client.

UPDATE 4:48 AM UTC / 11:48 PM EST

How do I know if I'm on the wrong fork?

UPDATE 5:14 AM UTC / 12:14 AM EST

The network is responding. Between block 42475 and 42480 on the good chain, the network hash rate dropped from 20 GH/sec to 15 GH/sec and the difficulty dropped from 320.3 to 253.3.
Here's my getmininginfo from 2 minutes ago:
{ "blocks" : 42502, "currentblocksize" : 0, "currentblocktx" : 0, "difficulty" : 253.32507890, "errors" : "", "generate" : false, "genproclimit" : -1, "hashespersec" : 0, "networkhashps" : 14678218267, "pooledtx" : 698, "testnet" : false } 
That's what the good chain looks like.

UPDATE 5:32 AM UTC / 12:32 AM EST

My test client that I resynced as an experiment ended up on the bad fork. There's going to need to be an intervention here similar to Bitcoin's.

UPDATE 5:50 AM UTC / 12:50 AM EST

SCAMMERS ARE ATTEMPTING TO STEAL WALLETS IN THIS THREAD. IF YOU RECEIVE A MESSAGE LIKE THIS DO NOT COMPLY. DEVELOPERS WILL NOT PM YOU TO SEND THEM YOUR FILES.
http://puu.sh/6a5jz/da27d4ae05.png

UPDATE 7:31 AM UTC / 2:31 AM EST

Okay, I'm done with this thread, folks. The Dogecoin developers are on it and the amount of abusive private messages that I'm receiving mean I'm washing my hands.
Look for an official thread from developers next, the information is out and my role is done.
Credit to hoopycat -- please tip him -- who discovered the source of the problem, I'm trying to get the word out right now. I do not get credit for this post.
submitted by lachryma to dogecoin [link] [comments]

Decred Journal – September 2018

Note: you can read this on GitHub (link), Medium (link) or old Reddit (link).

Development

Final version 1.3.0 of the core software was released bringing all the enhancements reported last month to the rest of the community. The groundwork for SPV (simplified payment verification) is complete, another reduction of fees is being deployed, and performance stepped up once again with a 50% reduction in startup time, 20% increased sync speed and more than 3x faster peer delivery of block headers (a key update for SPV). Decrediton's integrations of SPV and Politeia are open for testing by experienced users. Read the full release notes and get the downloads on GitHub. As always, don't forget to verify signatures.
dcrd: completed several steps towards multipeer downloads, improved introduction to the software in the main README, continued porting cleanups and refactoring from upstream btcd.
Currently in review are initial release of smart fee estimator and a change to UTXO set semantics. The latter is a large and important change that provides simpler handling, and resolves various issues with the previous approach. A lot of testing and careful review is needed so help is welcome.
Educational series for new Decred developers by @matheusd added two episodes: 02 Simnet Setup shows how to automate simnet management with tmux and 03 Miner Reward Invalidation explains block validity rules.
Finally, a pull request template with a list of checks was added to help guide the contributors to dcrd.
dcrwallet: bugfixes and RPC improvements to support desktop and mobile wallets.
Developers are welcome to comment on this idea to derive stakepool keys from the HD wallet seed. This would eliminate the need to backup and restore redeem scripts, thus greatly improving wallet UX. (missed in July issue)
Decrediton: bugfixes, refactoring to make the sync process more robust, new loading animations, design polishing.
Politeia: multiple improvements to the CLI client (security conscious users with more funds at risk might prefer CLI) and security hardening. A feature to deprecate or timeout proposals was identified as necessary for initial release and the work started. A privacy enhancement to not leak metadata of ticket holders was merged.
Android: update from @collins: "Second test release for dcrandroid is out. Major bugs have been fixed since last test. Latest code from SPV sync has been integrated. Once again, bug reports are welcome and issues can be opened on GitHub". Ask in #dev room for the APK to join testing.
A new security page was added that allows one to validate addresses and to sign/verify messages, similar to Decrediton's Security Center. Work on translations is beginning.
Overall the app is quite stable and accepting more testers. Next milestone is getting the test app on the app store.
iOS: the app started accepting testers last week. @macsleven: "the test version of Decred Wallet for iOS is available, we have a link for installing the app but the builds currently require your UDID. Contact either @macsleven or @raedah with your UDID if you would like to help test.".
Nearest goal is to make the app crash free.
Both mobile apps received new design themes.
dcrdata: v3.0 was released for mainnet! Highlights: charts, "merged debits" view, agendas page, Insight API support, side chain tracking, Go 1.11 support with module builds, numerous backend improvements. Full release notes here. This release featured 9 contributors and development lead @chappjc noted: "This collaboration with @raedahgroup on our own block explorer and web API for @decredproject has been super productive.".
Up next is supporting dynamic page widths site wide and deploying new visual blocks home page.
Trezor: proof of concept implementation for Trezor Model T firmware is in the works (previous work was for Model One).
Ticket splitting: updated to use Go modules and added simnet support, several fixes.
docs: beginner's guide overhaul, multiple fixes and cleanups.
decred.org: added 3rd party wallets, removed inactive PoW pools and removed web wallet.
@Richard-Red is building a curated list of Decred-related GitHub repositories.
Welcome to new people contributing for the first time: @klebe, @s_ben, @victorguedes, and PrimeDominus!
Dev activity stats for September: 219 active PRs, 197 commits, 28.7k added and 18.8k deleted lines spread across 6 repositories. Contributions came from 4-10 developers per repository. (chart)

Network

Hashrate: started and ended the month around 75 PH/s, hitting a low of 60.5 and a new high of 110 PH/s. BeePool is again the leader with their share varying between 23-54%, followed by F2Pool 13-30%, Coinmine 4-6% and Luxor 3-5%. As in previous months, there were multiple spikes of unidentified hashrate.
Staking: 30-day average ticket price is 98 DCR (+2.4). The price varied between 95.7 and 101.9 DCR. Locked DCR amount was 3.86-3.96 million DCR, or 45.7-46.5% of the supply.
Nodes: there are 201 public listening nodes and 325 normal nodes per dcred.eu. Version distribution: 5% are v1.4.0(pre) dev builds (+3%), 30% on v1.3.0 (+25%), 42% on v1.2.0 (-20%), 15% on v1.1.2 (-7%), 6% on v1.1.0. More than 76% of nodes run v1.2.0 and higher and therefore support client filters. Data as of Oct 1.

ASICs

Obelisk posted two updates on their mailing list. 70% of Batch 1 units are shipped, an extensive user guide is available, Obelisk Scanner application was released that allows one to automatically update firmware. First firmware update was released and bumped SC1 hashrate by 10-20%, added new pools and fixed multiple bugs. Next update will focus on DCR1. It is worth a special mention that the firmware source code is now open! Let us hope more manufacturers will follow this example.
A few details about Whatsminer surfaced this month. The manufacturer is MicroBT, also known as Bitwei and commonly misspelled as Bitewei. Pangolinminer is a reseller, and the model name is Whatsminer D1.
Bitmain has finally entered Decred ASIC space with their Antminer DR3. Hash rate is 7.8 TH/s while pulling 1410 W, at the price of $673. These specs mean it has the best GH/W and GH/USD of currently sold miners until the Whatsminer or others come out, although its GH/USD of 11.6 already competes with Whatsminer's 10.5. Discussed on Reddit and bitcointalk, unboxing video here.

Integrations

Meet our 17th voting service provider: decredvoting.com. It is operated by @david, has 2% fee and supports ticket splitting. Reddit thread is here.
For a historical note, the first VSP to support ticket splitting was decredbrasil.com:
@matheusd started tests on testnet several months ago. I contacted him so we could integrate with the pool in June this year. We set up the machine in July and bought the first split ticket on mainnet, using the decredbrasil pool, on July 19. It was voted on July 30. After this first vote on mainnet, we opened the tests to selected users (with more technical background) on the pool. In August we opened the tests to everyone, and would call people who want to join to the #ticket_splitting channel, or to our own Slack (in Portuguese, so mostly Brazilian users). We have 28 split tickets already voted, and 16 are live. So little more than 40 split tickets total were bought on decredbrasil pool. (@girino in #pos-voting)
KuCoin exchange listed DCBTC and DCETH pairs. To celebrate their anniversary they had a 99% trading fees discount on DCR pairs for 2 weeks.
Three more wallets integrated Decred in September:
ChangeNow announced Decred addition to their Android app that allows accountless swaps between 150+ assets.
Coinbase launched informational asset pages for top 50 coins by market cap, including Decred. First the pages started showing in the Coinbase app for a small group of testers, and later the web price dashboard went live.

Adoption

The birth of a Brazilian girl was registered on the Decred blockchain using OriginalMy, a blockchain proof of authenticity services provider. Read the full story in Portuguese and in English.

Marketing

Advertising report for September is ready. Next month the graphics for all the ads will be changing.
Marketing might seem quiet right now, but a ton is actually going on behind the scenes to put the right foundation in place for the future. Discovery data are being analyzed to generate a positioning strategy, as well as a messaging hierarchy that can guide how to talk about Decred. This will all be agreed upon via consensus of the community in the work channels, and materials will be distributed.
Next, work is being done to identify the right PR partner to help with media relations, media training, and coordination at events. While all of this is coming up to speed, we believe the website needs a refresher reflecting the soon to be agreed upon messaging, plus a more intuitive architecture to make it easier to navigate. (@Dustorf)

Events

Attended:
Upcoming:
We'll begin shortly reviewing conferences and events planned for the first half of 2019. Highlights are sure to include The North American Bitcoin Conference in Miami (Jan 16-18) and Consensus in NYC (May 14-16). If you have suggestions of events or conferences Decred should attend, please share them in #event_planning. In 2019, we would like to expand our presence in Europe, Asia, and South America, and we're looking for community members to help identify and staff those events. (@Dustorf)

Media

August issue of Decred Journal was translated to Russian. Many thanks to @DZ!
Rency cryptocurrency ratings published a report on Decred and incorporated a lot of feedback from the community on Reddit.
September issue of Chinese CCID ratings was published (snapshot), Decred is still at the bottom.
Videos:
Featured articles:
Articles:

Community Discussions

Community stats:
Comm systems news: Several work channels were migrated to Matrix, #writers_room is finally bridged.
Highlights:
Twitter: why decentralized governance and funding are necessary for network survival and the power of controlling the narrative; learning about governance more broadly by watching its evolution in cryptocurrency space, importance of community consensus and communications infrastructure.
Reddit: yet another strong pitch by @solar; question about buyer protections; dcrtime internals; a proposal to sponsor hoodies in the University of Cape Town; Lightning Network support for altcoins.
Chats: skills to operate a stakepool; voting details: 2 of 3 votes can approve a block, what votes really approve are regular tx, etc; scriptless script atomic swaps using Schnorr adaptor signatures; dev dashboard, choosing work, people do best when working on what interests them most; opportunities for governments and enterprise for anchoring legal data to blockchain; terminology: DAO vs DAE; human-friendly payments, sharing xpub vs payment protocols; funding btcsuite development; Politeia vote types: approval vote, sentiment vote and a defund vote, also linking proposals and financial statements; algo trading and programming languages (yes, on #trading!); alternative implementation, C/C++/Go/Rust; HFTs, algo trading, fake volume and slippage; offline wallets, usb/write-only media/optical scanners vs auditing traffic between dcrd and dcrwallet; Proof of Activity did not inspire Decred but spurred Decred to get moving, Wikipedia page hurdles; how stakeholders could veto blocks; how many votes are needed to approve a proposal; why Decrediton uses Electron; CVE-2018-17144 and over-dependence on single Bitcoin implementation, btcsuite, fuzz testing; tracking proposal progress after voting and funding; why the wallet does not store the seed at all; power connectors, electricity, wiring and fire safety; reasonable spendings from project fund; ways to measure sync progress better than block height; using Politeia without email address; concurrency in Go, locks vs channels.
#support is not often mentioned, but it must be noted that every day on this channel people get high quality support. (@bee: To my surprise, even those poor souls running Windows 10. My greatest respect to the support team!)

Markets

In September DCR was trading in the range of USD 34-45 / BTC 0.0054-0.0063. On Sep 6, DCR revisited the bottom of USD 34 / BTC 0.0054 when BTC quickly dropped from USD 7,300 to 6,400. On Sep 14, a small price rise coincided with both the start of KuCoin trading and hashrate spike to 104 PH/s. Looking at coinmarketcap charts, the trading volume is a bit lower than in July and August.
As of Oct 4, Decred is #18 by the number of daily transactions with 3,200 tx, and #9 by the USD value of daily issuance with $230k. (source: onchainfx)
Interesting observation by @ImacallyouJawdy: while we sit at 2018 price lows the amount locked in tickets is testing 2018 high.

Relevant External

ASIC for Lyra2REv2 was spotted on the web. Vertcoin team is preparing a new PoW algorithm. This would be the 3rd fork after two previous forks to change the algorithm in 2014 and 2015.
A report titled The Positive Externalities of Bitcoin Mining discusses the benefits of PoW mining that are often overlooked by the critics of its energy use.
A Brief Study of Cryptonetwork Forks by Alex Evans of Placeholder studies the behavior of users, developers and miners after the fork, and makes the cases that it is hard for child chains to attract users and developers from their parent chains.
New research on private atomic swaps: the paper "Anonymous Atomic Swaps Using Homomorphic Hashing" attempts to break the public link between two transactions. (bitcointalk, decred)
On Sep 18 Poloniex announced delisting of 8 more assets. That day they took a 12-80% dive showing their dependence on this one exchange.
Circle introduced USDC markets on Poloniex: "USDC is a fully collateralized US dollar stablecoin using the ERC-20 standard that provides detailed financial and operational transparency, operates within the regulated framework of US money transmission laws, and is reinforced by established banking partners and auditors.".
Coinbase announced new asset listing process and is accepting submissions on their listing portal. (decred)
The New York State Office of the Attorney General posted a study of 13 exchanges that contains many insights.
A critical vulnerability was discovered and fixed in Bitcoin Core. Few days later a full disclosure was posted revealing the severity of the bug. In a bitcointalk thread btcd was called 'amateur' despite not being vulnerable, and some Core developers voiced their concerns about multiple implementations. The Bitcoin Unlimited developer who found the bug shared his perspective in a blog post. Decred's vision so far is that more full node implementations is a strength, just like for any Internet protocol.

About This Issue

This is the 6th issue of Decred Journal. It is mirrored on GitHub, Medium and Reddit. Past issues are available here.
Most information from third parties is relayed directly from source after a minimal sanity check. The authors of Decred Journal have no ability to verify all claims. Please beware of scams and do your own research.
Feedback is appreciated: please comment on Reddit, GitHub or #writers_room on Matrix or Slack.
Contributions are also welcome: some areas are adding content, pre-release review or translations to other languages.
Credits (Slack names, alphabetical order): bee, Dustorf, jz, Haon, oregonisaac, raedah and Richard-Red.
submitted by jet_user to decred [link] [comments]

Fixed ''Error! SB Game Hacker - (out of sync error!!!) solved! Clash of Clans - Error: Out of sync with server... AGAIN! Clash of clan Error: client and Server are out of sync ...

Double-click on the icon to start the bitcoin client. The first time you run Bitcoin Core it will start downloading the blockchain, a process that may take several days. Leave it running in the background until it displays “Synchronized” and no longer shows “Out of sync” next to the balance. Bitcoin Core keeps a full copy of the ... The bitcoin qt client was catching up with the blockchain (5 days worth), when after maybe 15 minutes, it comes up with an error, "database corrupted" or something along the lines of that. I looked it up and users said to delete everthing in my %appdata/roaming/bitcoin% directy except the wallet.dat file. The first Parity Bitcoin sync attempt didn’t go well. After Parity fixed the consensus bug I tried again. Recompiled Parity Bitcoin with the SegWit bug fix. Full validation sync with 24GB dbcache and "verification edge" set to block 1 took 38 hours, 17 minutes, was disk I/O bound most of the time. — Jameson Lopp (@lopp) November 12, 2018 Bitcoin is a distributed, worldwide, decentralized digital money. Bitcoins are issued and managed without any central authority whatsoever: there is no government, company, or bank in charge of Bitcoin. You might be interested in Bitcoin if you like cryptography, distributed peer-to-peer systems, or economics. A large percentage of Bitcoin enthusiasts are libertarians, though people of all ... Ich versuche, führen Sie die IBD auf Bitcoin Core 0.18 und ich ständig Fehlermeldung "Fatal Internal Error" in scheinbar zufälligen Abständen, der Schließung von bitcoin-qt und hindert mich daran, voll synchronisiert. Am weitesten, die ich bekommen habe war bisher 5% nach Stunden des Versuchens und re-Indizierung. Ich könnte es auf 6 Jahre zurück, wenn ich Glück habe, einmal 5 Jahre ...

[index] [5152] [34116] [13988] [50392] [27676] [9785] [7399] [11985] [44325] [27484]

Fixed ''Error!"Client and server are out of sync!"

How to fix client and server out of sync use GG Clash of Clans on Android Please Follow This Tutorial : Download the clash hack here http://www.mediafire.com... Film Theory: Avatar and the Science of Waterbending (Avatar the Last Airbender) - Duration: 17:35. The Film Theorists Recommended for you This video is unavailable. Watch Queue Queue. Watch Queue Queue A short tutorial on how to fix the Clash of Clans "Client and Server are out of Sync" error message. Leave a comment if you have any questions. This video is unavailable. Watch Queue Queue. Watch Queue Queue

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