pooler/stratum-mining-proxy on GitHub - Libraries.io
GitHub - cdhowie/Bitcoin-mining-proxy: Multi-pool, multi ...
Bitcoin Mining Guide - Getting started with Bitcoin mining
Stratum mining. All about cryptocurrency - BitcoinWiki
Flowee 2020.04 release: New TransactionID service and new BCH-C++ library for P2P
This release adds some 80 commits, with git stats of 95 files changed, 6167 insertions and 529 deletions. More importantly, this release adds a new library to Flowee that is focused on the peer-2-peer protocol and implements all the basics any app would need to be an SPV (Simplified Payment Verification (8)) client, such as a wallet. Synchronized with this release the first beta release of a new wallet called, "Flowee Pay" is published with basic functionality to give an idea where this is going. We invite anyone to contribute with us to build the best open source Bitcoin Cash payment infrastructure there is. Back to this release: Bugfixes in the Hub and Indexer will help add stability to the suite and improvements in the NetworkManager library will be helpful for components like FloweeJS (released last week) and bitcore-proxy. In the Hub added a new service which is available now on the flowee.org API. This service allows applications to register a transaction-ID they are interested in and get a push notification upon its entering the mempool and a second notification when it gets mined. Direct downloads can be found on github
Dear Groestlers, it goes without saying that 2020 has been a difficult time for millions of people worldwide. The groestlcoin team would like to take this opportunity to wish everyone our best to everyone coping with the direct and indirect effects of COVID-19. Let it bring out the best in us all and show that collectively, we can conquer anything. The centralised banks and our national governments are facing unprecedented times with interest rates worldwide dropping to record lows in places. Rest assured that this can only strengthen the fundamentals of all decentralised cryptocurrencies and the vision that was seeded with Satoshi's Bitcoin whitepaper over 10 years ago. Despite everything that has been thrown at us this year, the show must go on and the team will still progress and advance to continue the momentum that we have developed over the past 6 years. In addition to this, we'd like to remind you all that this is Groestlcoin's 6th Birthday release! In terms of price there have been some crazy highs and lows over the years (with highs of around $2.60 and lows of $0.000077!), but in terms of value– Groestlcoin just keeps getting more valuable! In these uncertain times, one thing remains clear – Groestlcoin will keep going and keep innovating regardless. On with what has been worked on and completed over the past few months.
UPDATED - Groestlcoin Core 2.18.2
This is a major release of Groestlcoin Core with many protocol level improvements and code optimizations, featuring the technical equivalent of Bitcoin v0.18.2 but with Groestlcoin-specific patches. On a general level, most of what is new is a new 'Groestlcoin-wallet' tool which is now distributed alongside Groestlcoin Core's other executables. NOTE: The 'Account' API has been removed from this version which was typically used in some tip bots. Please ensure you check the release notes from 2.17.2 for details on replacing this functionality.
Builds are now done through Gitian
Calls to getblocktemplate will fail if the segwit rule is not specified. Calling getblocktemplate without segwit specified is almost certainly a misconfiguration since doing so results in lower rewards for the miner. Failed calls will produce an error message describing how to enable the segwit rule.
A warning is printed if an unrecognized section name is used in the configuration file. Recognized sections are [test], [main], and [regtest].
Four new options are available for configuring the maximum number of messages that ZMQ will queue in memory (the "high water mark") before dropping additional messages. The default value is 1,000, the same as was used for previous releases.
The rpcallowip option can no longer be used to automatically listen on all network interfaces. Instead, the rpcbind parameter must be used to specify the IP addresses to listen on. Listening for RPC commands over a public network connection is insecure and should be disabled, so a warning is now printed if a user selects such a configuration. If you need to expose RPC in order to use a tool like Docker, ensure you only bind RPC to your localhost, e.g. docker run [...] -p 127.0.0.1:1441:1441 (this is an extra :1441 over the normal Docker port specification).
The rpcpassword option now causes a startup error if the password set in the configuration file contains a hash character (#), as it's ambiguous whether the hash character is meant for the password or as a comment.
The whitelistforcerelay option is used to relay transactions from whitelisted peers even when not accepted to the mempool. This option now defaults to being off, so that changes in policy and disconnect/ban behavior will not cause a node that is whitelisting another to be dropped by peers.
A new short about the JSON-RPC interface describes cases where the results of anRPC might contain inconsistencies between data sourced from differentsubsystems, such as wallet state and mempool state.
A new document introduces Groestlcoin Core's BIP174 interface, which is used to allow multiple programs to collaboratively work to create, sign, and broadcast new transactions. This is useful for offline (cold storage) wallets, multisig wallets, coinjoin implementations, and many other cases where two or more programs need to interact to generate a complete transaction.
The output script descriptor (https://github.com/groestlcoin/groestlcoin/blob/mastedoc/descriptors.md) documentation has been updated with information about new features in this still-developing language for describing the output scripts that a wallet or other program wants to receive notifications for, such as which addresses it wants to know received payments. The language is currently used in multiple new and updated RPCs described in these release notes and is expected to be adapted to other RPCs and to the underlying wallet structure.
A new --disable-bip70 option may be passed to ./configure to prevent Groestlcoin-Qt from being built with support for the BIP70 payment protocol or from linking libssl. As the payment protocol has exposed Groestlcoin Core to libssl vulnerabilities in the past, builders who don't need BIP70 support are encouraged to use this option to reduce their exposure to future vulnerabilities.
The minimum required version of Qt (when building the GUI) has been increased from 5.2 to 5.5.1 (the depends system provides 5.9.7)
getnodeaddresses returns peer addresses known to this node. It may be used to find nodes to connect to without using a DNS seeder.
listwalletdir returns a list of wallets in the wallet directory (either the default wallet directory or the directory configured bythe -walletdir parameter).
getrpcinfo returns runtime details of the RPC server. Currently, it returns an array of the currently active commands and how long they've been running.
deriveaddresses returns one or more addresses corresponding to an output descriptor.
getdescriptorinfo accepts a descriptor and returns information aboutit, including its computed checksum.
joinpsbts merges multiple distinct PSBTs into a single PSBT. The multiple PSBTs must have different inputs. The resulting PSBT will contain every input and output from all the PSBTs. Any signatures provided in any of the PSBTs will be dropped.
analyzepsbt examines a PSBT and provides information about what the PSBT contains and the next steps that need to be taken in order to complete the transaction. For each input of a PSBT, analyze psbt provides information about what information is missing for that input, including whether a UTXO needs to be provided, what pubkeys still need to be provided, which scripts need to be provided, and what signatures are still needed. Every input will also list which role is needed to complete that input, and analyzepsbt will also list the next role in general needed to complete the PSBT. analyzepsbt will also provide the estimated fee rate and estimated virtual size of the completed transaction if it has enough information to do so.
utxoupdatepsbt searches the set of Unspent Transaction Outputs (UTXOs) to find the outputs being spent by the partial transaction. PSBTs need to have the UTXOs being spent to be provided because the signing algorithm requires information from the UTXO being spent. For segwit inputs, only the UTXO itself is necessary. For non-segwit outputs, the entire previous transaction is needed so that signers can be sure that they are signing the correct thing. Unfortunately, because the UTXO set only contains UTXOs and not full transactions, utxoupdatepsbt will only add the UTXO for segwit inputs.
getpeerinfo now returns an additional minfeefilter field set to the peer's BIP133 fee filter. You can use this to detect that you have peers that are willing to accept transactions below the default minimum relay fee.
The mempool RPCs, such as getrawmempool with verbose=true, now return an additional "bip125-replaceable" value indicating whether thetransaction (or its unconfirmed ancestors) opts-in to asking nodes and miners to replace it with a higher-feerate transaction spending any of the same inputs.
settxfee previously silently ignored attempts to set the fee below the allowed minimums. It now prints a warning. The special value of"0" may still be used to request the minimum value.
getaddressinfo now provides an ischange field indicating whether the wallet used the address in a change output.
importmulti has been updated to support P2WSH, P2WPKH, P2SH-P2WPKH, and P2SH-P2WSH. Requests for P2WSH and P2SH-P2WSH accept an additional witnessscript parameter.
importmulti now returns an additional warnings field for each request with an array of strings explaining when fields are being ignored or are inconsistent, if there are any.
getaddressinfo now returns an additional solvable Boolean field when Groestlcoin Core knows enough about the address's scriptPubKey, optional redeemScript, and optional witnessScript for the wallet to be able to generate an unsigned input spending funds sent to that address.
The getaddressinfo, listunspent, and scantxoutset RPCs now return an additional desc field that contains an output descriptor containing all key paths and signing information for the address (except for the private key). The desc field is only returned for getaddressinfo and listunspent when the address is solvable.
importprivkey will preserve previously-set labels for addresses or public keys corresponding to the private key being imported. For example, if you imported a watch-only address with the label "coldwallet" in earlier releases of Groestlcoin Core, subsequently importing the private key would default to resetting the address's label to the default empty-string label (""). In this release, the previous label of "cold wallet" will be retained. If you optionally specify any label besides the default when calling importprivkey, the new label will be applied to the address.
getmininginfo now omits currentblockweight and currentblocktx when a block was never assembled via RPC on this node.
The getrawtransaction RPC & REST endpoints no longer check the unspent UTXO set for a transaction. The remaining behaviors are as follows:
If a blockhash is provided, check the corresponding block.
If no blockhash is provided, check the mempool.
If no blockhash is provided but txindex is enabled, also check txindex.
unloadwallet is now synchronous, meaning it will not return until the wallet is fully unloaded.
importmulti now supports importing of addresses from descriptors. A desc parameter can be provided instead of the "scriptPubKey" in are quest, as well as an optional range for ranged descriptors to specify the start and end of the range to import. Descriptors with key origin information imported through importmulti will have their key origin information stored in the wallet for use with creating PSBTs.
listunspent has been modified so that it also returns witnessScript, the witness script in the case of a P2WSH orP2SH-P2WSH output.
createwallet now has an optional blank argument that can be used to create a blank wallet. Blank wallets do not have any keys or HDseed. They cannot be opened in software older than 2.18.2. Once a blank wallet has a HD seed set (by using sethdseed) or private keys, scripts, addresses, and other watch only things have been imported, the wallet is no longer blank and can be opened in 2.17.2. Encrypting a blank wallet will also set a HD seed for it.
signrawtransaction is removed after being deprecated and hidden behind a special configuration option in version 2.17.2.
The 'account' API is removed after being deprecated in v2.17.2 The 'label' API was introduced in v2.17.2 as a replacement for accounts. See the release notes from v2.17.2 for a full description of the changes from the 'account' API to the 'label' API.
addwitnessaddress is removed after being deprecated in version 2.16.0.
generate is deprecated and will be fully removed in a subsequent major version. This RPC is only used for testing, but its implementation reached across multiple subsystems (wallet and mining), so it is being deprecated to simplify the wallet-node interface. Projects that are using generate for testing purposes should transition to using the generatetoaddress RPC, which does not require or use the wallet component. Calling generatetoaddress with an address returned by the getnewaddress RPC gives the same functionality as the old generate RPC. To continue using generate in this version, restart groestlcoind with the -deprecatedrpc=generate configuration option.
Be reminded that parts of the validateaddress command have been deprecated and moved to getaddressinfo. The following deprecated fields have moved to getaddressinfo: ismine, iswatchonly,script, hex, pubkeys, sigsrequired, pubkey, embedded,iscompressed, label, timestamp, hdkeypath, hdmasterkeyid.
The addresses field has been removed from the validateaddressand getaddressinfo RPC methods. This field was confusing since it referred to public keys using their P2PKH address. Clients should use the embedded.address field for P2SH or P2WSH wrapped addresses, and pubkeys for inspecting multisig participants.
A new /rest/blockhashbyheight/ endpoint is added for fetching the hash of the block in the current best blockchain based on its height (how many blocks it is after the Genesis Block).
A new Window menu is added alongside the existing File, Settings, and Help menus. Several items from the other menus that opened new windows have been moved to this new Window menu.
In the Send tab, the checkbox for "pay only the required fee" has been removed. Instead, the user can simply decrease the value in the Custom Fee rate field all the way down to the node's configured minimumrelay fee.
In the Overview tab, the watch-only balance will be the only balance shown if the wallet was created using the createwallet RPC and thedisable_private_keys parameter was set to true.
The launch-on-startup option is no longer available on macOS if compiled with macosx min version greater than 10.11 (useCXXFLAGS="-mmacosx-version-min=10.11" CFLAGS="-mmacosx-version-min=10.11" for setting the deployment sdkversion)
A new groestlcoin-wallet tool is now distributed alongside Groestlcoin Core's other executables. Without needing to use any RPCs, this tool can currently create a new wallet file or display some basic information about an existing wallet, such as whether the wallet is encrypted, whether it uses an HD seed, how many transactions it contains, and how many address book entries it has.
Since version 2.16.0, Groestlcoin Core's built-in wallet has defaulted to generating P2SH-wrapped segwit addresses when users want to receive payments. These addresses are backwards compatible with all widely used software. Starting with Groestlcoin Core 2.20.1 (expected about a year after 2.18.2), Groestlcoin Core will default to native segwitaddresses (bech32) that provide additional fee savings and other benefits. Currently, many wallets and services already support sending to bech32 addresses, and if the Groestlcoin Core project sees enough additional adoption, it will instead default to bech32 receiving addresses in Groestlcoin Core 2.19.1. P2SH-wrapped segwit addresses will continue to be provided if the user requests them in the GUI or by RPC, and anyone who doesn't want the update will be able to configure their default address type. (Similarly, pioneering users who want to change their default now may set the addresstype=bech32 configuration option in any Groestlcoin Core release from 2.16.0 up.)
BIP 61 reject messages are now deprecated. Reject messages have no use case on the P2P network and are only logged for debugging by most network nodes. Furthermore, they increase bandwidth and can be harmful for privacy and security. It has been possible to disable BIP 61 messages since v2.17.2 with the -enablebip61=0 option. BIP 61 messages will be disabled by default in a future version, before being removed entirely.
The submitblock RPC previously returned the reason a rejected block was invalid the first time it processed that block but returned a generic "duplicate" rejection message on subsequent occasions it processed the same block. It now always returns the fundamental reason for rejecting an invalid block and only returns "duplicate" for valid blocks it has already accepted.
A new submitheader RPC allows submitting block headers independently from their block. This is likely only useful for testing.
The signrawtransactionwithkey and signrawtransactionwithwallet RPCs have been modified so that they also optionally accept a witnessScript, the witness script in the case of a P2WSH orP2SH-P2WSH output. This is compatible with the change to listunspent.
For the walletprocesspsbt and walletcreatefundedpsbt RPCs, if thebip32derivs parameter is set to true but the key metadata for a public key has not been updated yet, then that key will have a derivation path as if it were just an independent key (i.e. no derivation path and its master fingerprint is itself).
The -usehd configuration option was removed in version 2.16.0 From that version onwards, all new wallets created are hierarchical deterministic wallets. This release makes specifying -usehd an invalid configuration option.
This release allows peers that your node automatically disconnected for misbehaviour (e.g. sending invalid data) to reconnect to your node if you have unused incoming connection slots. If your slots fill up, a misbehaving node will be disconnected to make room for nodes without a history of problems (unless the misbehaving node helps your node in some other way, such as by connecting to a part of the Internet from which you don't have many other peers). Previously, Groestlcoin Core banned the IP addresses of misbehaving peers for a period (default of 1 day); this was easily circumvented by attackers with multiple IP addresses. If you manually ban a peer, such as by using the setban RPC, all connections from that peer will still be rejected.
The key metadata will need to be upgraded the first time that the HDseed is available. For unencrypted wallets this will occur on wallet loading. For encrypted wallets this will occur the first time the wallet is unlocked.
Newly encrypted wallets will no longer require restarting the software. Instead such wallets will be completely unloaded and reloaded to achieve the same effect.
A sub-project of Bitcoin Core now provides Hardware Wallet Interaction (HWI) scripts that allow command-line users to use several popular hardware key management devices with Groestlcoin Core. See their project page for details.
This release changes the Random Number Generator (RNG) used from OpenSSL to Groestlcoin Core's own implementation, although entropy gathered by Groestlcoin Core is fed out to OpenSSL and then read back in when the program needs strong randomness. This moves Groestlcoin Core a little closer to no longer needing to depend on OpenSSL, a dependency that has caused security issues in the past. The new implementation gathers entropy from multiple sources, including from hardware supporting the rdseed CPU instruction.
On macOS, Groestlcoin Core now opts out of application CPU throttling ("app nap") during initial blockchain download, when catching up from over 100 blocks behind the current chain tip, or when reindexing chain data. This helps prevent these operations from taking an excessively long time because the operating system is attempting to conserve power.
How to Upgrade?
Windows If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer. OSX If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), run the dmg and drag Groestlcoin Core to Applications. Ubuntu http://groestlcoin.org/forum/index.php?topic=441.0
ALL NEW - Groestlcoin Moonshine iOS/Android Wallet
Built with React Native, Moonshine utilizes Electrum-GRS's JSON-RPC methods to interact with the Groestlcoin network. GRS Moonshine's intended use is as a hot wallet. Meaning, your keys are only as safe as the device you install this wallet on. As with any hot wallet, please ensure that you keep only a small, responsible amount of Groestlcoin on it at any given time.
Groestlcoin Mainnet & Testnet supported
Multiple wallet support
Electrum - Support for both random and custom peers
Biometric + Pin authentication
Custom fee selection
Import mnemonic phrases via manual entry or scanning
BIP39 Passphrase functionality
Support for Segwit-compatible & legacy addresses in settings
Support individual private key sweeping
UTXO blacklisting - Accessible via the Transaction Detail view, this allows users to blacklist any utxo that they do not wish to include in their list of available utxo's when sending transactions. Blacklisting a utxo excludes its amount from the wallet's total balance.
Ability to Sign & Verify Messages
Support BitID for password-free authentication
Coin Control - This can be accessed from the Send Transaction view and basically allows users to select from a list of available UTXO's to include in their transaction.
HODL GRS connects directly to the Groestlcoin network using SPV mode and doesn't rely on servers that can be hacked or disabled. HODL GRS utilizes AES hardware encryption, app sandboxing, and the latest security features to protect users from malware, browser security holes, and even physical theft. Private keys are stored only in the secure enclave of the user's phone, inaccessible to anyone other than the user. Simplicity and ease-of-use is the core design principle of HODL GRS. A simple recovery phrase (which we call a Backup Recovery Key) is all that is needed to restore the user's wallet if they ever lose or replace their device. HODL GRS is deterministic, which means the user's balance and transaction history can be recovered just from the backup recovery key.
Simplified payment verification for fast mobile performance
Groestlcoin Seed Savior is a tool for recovering BIP39 seed phrases. This tool is meant to help users with recovering a slightly incorrect Groestlcoin mnemonic phrase (AKA backup or seed). You can enter an existing BIP39 mnemonic and get derived addresses in various formats. To find out if one of the suggested addresses is the right one, you can click on the suggested address to check the address' transaction history on a block explorer.
If a word is wrong, the tool will try to suggest the closest option.
If a word is missing or unknown, please type "?" instead and the tool will find all relevant options.
NOTE: NVidia GPU or any CPU only. AMD graphics cards will not work with this address generator. VanitySearch is a command-line Segwit-capable vanity Groestlcoin address generator. Add unique flair when you tell people to send Groestlcoin. Alternatively, VanitySearch can be used to generate random addresses offline. If you're tired of the random, cryptic addresses generated by regular groestlcoin clients, then VanitySearch is the right choice for you to create a more personalized address. VanitySearch is a groestlcoin address prefix finder. If you want to generate safe private keys, use the -s option to enter your passphrase which will be used for generating a base key as for BIP38 standard (VanitySearch.exe -s "My PassPhrase" FXPref). You can also use VanitySearch.exe -ps "My PassPhrase" which will add a crypto secure seed to your passphrase. VanitySearch may not compute a good grid size for your GPU, so try different values using -g option in order to get the best performances. If you want to use GPUs and CPUs together, you may have best performances by keeping one CPU core for handling GPU(s)/CPU exchanges (use -t option to set the number of CPU threads).
Fixed size arithmetic
Fast Modular Inversion (Delayed Right Shift 62 bits)
SecpK1 Fast modular multiplication (2 steps folding 512bits to 256bits using 64 bits digits)
Use some properties of elliptic curve to generate more keys
SSE Secure Hash Algorithm SHA256 and RIPEMD160 (CPU)
Groestlcoin EasyVanity 2020 is a windows app built from the ground-up and makes it easier than ever before to create your very own bespoke bech32 address(es) when whilst not connected to the internet. If you're tired of the random, cryptic bech32 addresses generated by regular Groestlcoin clients, then Groestlcoin EasyVanity2020 is the right choice for you to create a more personalised bech32 address. This 2020 version uses the new VanitySearch to generate not only legacy addresses (F prefix) but also Bech32 addresses (grs1 prefix).
Ability to continue finding keys after first one is found
Includes warning on start-up if connected to the internet
Ability to output keys to a text file (And shows button to open that directory)
Show and hide the private key with a simple toggle switch
Show full output of commands
Ability to choose between Processor (CPU) and Graphics Card (GPU) ( NVidia ONLY! )
Features both a Light and Dark Material Design-Style Themes
Free software - MIT. Anyone can audit the code.
Written in C# - The code is short, and easy to review.
Groestlcoin WPF is an alternative full node client with optional lightweight 'thin-client' mode based on WPF. Windows Presentation Foundation (WPF) is one of Microsoft's latest approaches to a GUI framework, used with the .NET framework. Its main advantages over the original Groestlcoin client include support for exporting blockchain.dat and including a lite wallet mode. This wallet was previously deprecated but has been brought back to life with modern standards.
Works via TOR or SOCKS5 proxy
Can use bootstrap.dat format as blockchain database
Import/Export blockchain to/from bootstrap.dat
Import wallet.dat from Groestlcoin-qt wallet
Export wallet to wallet.dat
Use both groestlcoin-wpf and groestlcoin-qt with the same addresses in parallel. When you send money from one program, the transaction will automatically be visible on the other wallet.
Rescan blockchain with a simple mouse click
Works as a full node and listens to port 1331 (listening port can be changed)
Fast Block verifying, parallel processing on multi-core CPUs
Mine Groestlcoins with your CPU by a simple mouse click
All private keys are kept encrypted on your local machine (or on a USB stick)
Lite - Has a lightweight "thin client" mode which does not require a new user to download the entire Groestlcoin chain and store it
Free and decentralised - Open Source under GNU license
Fixed Import/Export to wallet.dat
Rescan wallet option
Change wallet password option
Address type and Change type options through *.conf file
Import from bootstrap.dat - It is a flat, binary file containing Groestlcoin blockchain data, from the genesis block through a recent height. All versions automatically validate and import the file "grs.bootstrap.dat" in the GRS directory. Grs.bootstrap.dat is compatible with Qt wallet. GroestlCoin-Qt can load from it.
In Full mode file %APPDATA%\Groestlcoin-WPF\GRS\GRS.bootstrap.dat is full blockchain in standard bootstrap.dat format and can be used with other clients.
Groestlcoin Electrum Personal Server aims to make using Electrum Groestlcoin wallet more secure and more private. It makes it easy to connect your Electrum-GRS wallet to your own full node. It is an implementation of the Electrum-grs server protocol which fulfils the specific need of using the Electrum-grs wallet backed by a full node, but without the heavyweight server backend, for a single user. It allows the user to benefit from all Groestlcoin Core's resource-saving features like pruning, blocks only and disabled txindex. All Electrum-GRS's feature-richness like hardware wallet integration, multi-signature wallets, offline signing, seed recovery phrases, coin control and so on can still be used, but connected only to the user's own full node. Full node wallets are important in Groestlcoin because they are a big part of what makes the system be trust-less. No longer do people have to trust a financial institution like a bank or PayPal, they can run software on their own computers. If Groestlcoin is digital gold, then a full node wallet is your own personal goldsmith who checks for you that received payments are genuine. Full node wallets are also important for privacy. Using Electrum-GRS under default configuration requires it to send (hashes of) all your Groestlcoin addresses to some server. That server can then easily spy on your transactions. Full node wallets like Groestlcoin Electrum Personal Server would download the entire blockchain and scan it for the user's own addresses, and therefore don't reveal to anyone else which Groestlcoin addresses they are interested in. Groestlcoin Electrum Personal Server can also broadcast transactions through Tor which improves privacy by resisting traffic analysis for broadcasted transactions which can link the IP address of the user to the transaction. If enabled this would happen transparently whenever the user simply clicks "Send" on a transaction in Electrum-grs wallet. Note: Currently Groestlcoin Electrum Personal Server can only accept one connection at a time.
Use your own node
Uses less CPU and RAM than ElectrumX
Used intermittently rather than needing to be always-on
Doesn't require an index of every Groestlcoin address ever used like on ElectrumX
UPDATED – Android Wallet 7.38.1 - Main Net + Test Net
The app allows you to send and receive Groestlcoin on your device using QR codes and URI links. When using this app, please back up your wallet and email them to yourself! This will save your wallet in a password protected file. Then your coins can be retrieved even if you lose your phone.
Add confidence messages, helping users to understand the confidence state of their payments.
Handle edge case when restoring via an external app.
Count devices with a memory class of 128 MB as low ram.
Introduce dark mode on Android 10 devices.
Reduce memory usage of PIN-protected wallets.
Tapping on the app's version will reveal a checksum of the APK that was installed.
Fix issue with confirmation of transactions that empty your wallet.
Groestlcoin Sentinel is a great solution for anyone who wants the convenience and utility of a hot wallet for receiving payments directly into their cold storage (or hardware wallets). Sentinel accepts XPUB's, YPUB'S, ZPUB's and individual Groestlcoin address. Once added you will be able to view balances, view transactions, and (in the case of XPUB's, YPUB's and ZPUB's) deterministically generate addresses for that wallet. Groestlcoin Sentinel is a fork of Groestlcoin Samourai Wallet with all spending and transaction building code removed.
IQ stock broker is a Forex & bitcoin Company in USA Founded in 2012 by a team of highly motivated professionals who are very passionate about trading on the world’s financial market, and are keen on empowering
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With the large number of new readers coming to this sub we need to make information easy to access so those readers can make informed decisions. We all know there is an unusually large amount of Fear, Uncertainty and Doubt (FUD) surrounding EOS. Frankly, when clear evidence is provided it’s not that difficult to see EOS for the extremely valuable project it is. This post hopes to begin to put an end to all the misinformation by doing the following:
Giving a clear and concise answer to the most frequently asked questions in regards to EOS.
Giving a more in-depth answer for those who want to read more.
Allowing readers to make informed decisions by making credible information easy to access.
As EOS climbs the ranks we need to recognise there are going to be a lot of skeptical readers coming over and posting their questions. Sometimes they will be irrational, hostile and often just looking for a reaction. We should make it our responsibility to welcome everyone and refrain from responding emotionally to provocative posts, instead providing factual and rational answers. I will add to this post as and when I can, if you have any ideas or spot any mistakes let me know and I'll get them fixed ASAP. Im planning to add a bit on the team, centralisation and DPOS, governance and EOS VC shortly but please let me hear your suggestions!
1. How do you registeclaim your EOS tokens before June 2018?
Select Metamask, MyEtherWallet, or Ethereum Wallet
Follow the guide.
Remember that the reason you need to register your Ethereum ERC-20 address is to include your EOS tokens in order for the balance of your EOS Tokens to be included in the Snapshot if a Snapshot is created, you must register your Ethereum address with an EOS public key. The EOS snapshot will take place prior to the 1 June 2018. After this point your ERC-20 EOS tokens will be frozen. And you will be issued EOS tokens on the EOS blockchain.
So PLEASE REGISTER your Ethereum address NOW, don't forget about it, or plan on doing it some time in the near future.
There are a lot of submissions about this in /eos, so rather than making a new one please reply to this thread with any questions you may have. Don't forget to join the EOS mailing list: https://eos.io/#subscribe and join the EOS community on your platform(s) of choice: Telegram, Discord and/or Facebook. And remember, if anyone instructs you to transfer ETH to an EOS contract address that doesn't match the address found on https://eos.io you are being scammed.
2. How will the token the ERC-20 EOS tokens be transferred to the native blockchain?
There isn't one! Read the long answer then read it again, registering your Ethereum wallet is mandatory!
Within 23 hours after the end of the final period on June 1, 2018 at 22:59:59 UTC, all EOS Tokens will become fixed (ie. frozen) and will become non-transferrable on the Ethereum blockchain. In order to ensure your tokens are transferred over to the native blockchain you must register your Ethereum address with an EOS public key, if you do not you will lose all your tokens! I am not going to link any tutorials as there are many that can be found by searching Google and YouTube. block.one is helping with the development of snapshot software that can be used to capture the EOS token balance and registered EOS public key of wallets on the Ethereum blockchain. It is then down to the community to create the snapshot. This snapshot can be used when generating a genesis block for a blockchain implementing eos.io software. block.one will not be launching EOS blockchains or operating any of their nodes.
Exchange Support Some exchanges have announced that they will support the token swap. Although using this method will undoubtedly be much simpler than registering the tokens yourself it also comes with its pitfalls.
It is highly likely there are going to be multiple networks running on the eos.io software that use the snapshot. It is highly unlikely that exchanges will support them all.
It is highly likely that exchanges will not support airdrops that use the snapshot.
Exchanges that have announced support for the token swap include:
EOS.IO software is aiming to provide a decentralized operating system which can support thousands of industrial scale DApps by enabling vertical and horizontal scaling.
EOS.IO is software that introduces a blockchain architecture designed to enable vertical and horizontal scaling of decentralized applications. This is achieved through an operating system-like construct upon which applications can be built. The software provides accounts, authentication, databases, asynchronous communication and the scheduling of applications across multiple CPU cores and/or clusters. The resulting technology is a blockchain architecture that has the potential to scale to millions of transactions per second, eliminates user fees and allows for quick and easy deployment of decentralized applications.
CEO Brendan Blumer - Founder of ii5 (1group) and okay.com. He has been in the blockchain industry since 2014 and started selling virtual assets at the age of 15. Brenden can be found on the Forbes Cypto Rich List. Brendan can be found on Twitter.
CTO Dan Larimer - Dan's the visionary industry leader who built BitShares, Graphene and Steemit as well as the increasingly popular Proof of Stake Governance and Decentralised Autonomous Organization Concept. He states his mission in life is “to find free market solutions to secure life, liberty, and property for all.”. Dan can also be found on the Forbes Cypto Rich List. Dan can be found on Twitter and Medium.
Partner Ian Grigg - Financial cryptographer who's been building cryptographic ledger platforms for 2+ decades. Inventor of the Ricardian Contract and Triple-Entry Accounting.
6. Which consensus mechanism does EOS use and what are Block Producers?
Delegated Proof of Stake (DPOS) with Byzantine Fault Tolerance. Block Producers (BPs) produce the blocks of the blockchain and are elected by token holders that vote for them. BPs will earn block rewards for their service, these block rewards come in the form of EOS tokens produced by token inflation.
“EOS.IO software utilizes the only known decentralized consensus algorithm proven capable of meeting the performance requirements of applications on the blockchain, Delegated Proof of Stake (DPOS). Under this algorithm, those who hold tokens on a blockchain adopting the EOS.IO software may select block producers through a continuous approval voting system. Anyone may choose to participate in block production and will be given an opportunity to produce blocks, provided they can persuade token holders to vote for them. The EOS.IO software enables blocks to be produced exactly every 0.5 second and exactly one producer is authorized to produce a block at any given point in time. If the block is not produced at the scheduled time, then the block for that time slot is skipped. When one or more blocks are skipped, there is a 0.5 or more second gap in the blockchain. Using the EOS.IO software, blocks are produced in rounds of 126 (6 blocks each, times 21 producers). At the start of each round 21 unique block producers are chosen by preference of votes cast by token holders. The selected producers are scheduled in an order agreed upon by 15 or more producers. Byzantine Fault Tolerance is added to traditional DPOS by allowing all producers to sign all blocks so long as no producer signs two blocks with the same timestamp or the same block height. Once 15 producers have signed a block the block is deemed irreversible. Any byzantine producer would have to generate cryptographic evidence of their treason by signing two blocks with the same timestamp or blockheight. Under this model a irreversible consensus should be reachable within 1 second."
7. How does the voting process work?
The voting process will begin once the Block Producer community releases a joint statement ensuring that it is safe to import private keys and vote. Broadly speaking there will be two methods of voting:
Command Line Interface (CLI) tools
EOS Canada has created eosc, a CLI tool that supports Block Producer voting. Other Block Producer candidates such as LibertyBlock are a releasing web portal that will be ready for main net launch. There will be many more options over the coming weeks, please make sure you are always using a service from a trusted entity. Remember: Do not import your private key until you have seen a joint statement released from at least five Block Producers that you trust which states when it is safe to do so. Ignoring this warning could result in tokens lost.
8. What makes EOS a good investment?
Team - EOS is spearheaded by the visionary that brought us the hugely successful Bitshares and Steem - arguably with two projects already under his belt there is no one more accomplished in the space.
Funding - EOS is one of the best funded projects in the space. The block.one team has committed $1B to investing in funds that grow the EOS echo system. EOS VC funds are managed by venture leaders distributed around the world to insure founders in all markets have the ability to work directly with local investors. Incentives such as the EOS hackathon are also in place with $1,500,000 USD in Prizes Across 4 Events.
Community Focus - The team is aware that the a projects success depends almost entirely on its adoption. For this reason there has been a huge push to develop a strong world wide community. There is already a surplus number of block producers that have registered their interest and started to ready themselves for the launch and incentives the EOS hackathon are being used to grow the community. A index of projects using EOS can be found at https://eosindex.io/posts.
Technical Advantages - See point 9!
9. What are the unique selling points of EOS?
Potential to scale to millions of transactions per second
This depends entirely on your definition of working product. If a fully featured developer release meets your definition then yes!. Otherwise the public release will be June 2018.
EOS differs from other projects in that it aims to deliver a fully featured version of the software on launch. The Dawn 3.0 RC1 feature complete pre-release became available on April 5th. This version has all the features of the final release that is due June 2018. Further development will involve preparing the final system contract which implements all of the staking, voting, and governance mechanics. The common notion that there is no viewable code published is wrong and the initial Dawn 1.0 release has been available from September 14th 2017.
11. EOS is an ERC-20 token, how can it possibly be a competitor to other platforms?
The ERC-20 token is used only for raising funds during the token distribution; all tokens will be transferred to the native blockchain once launched.
EOS team has clearly stated their reason for choosing the Ethereum network when they described the rationale behind the ICO model. Specifically, the ICO should be a fair and auditable process, with as little trust required as possible. If you believe that an ICO should be fair, auditable, and trustless, you have no choice but to use a decentralized smart contract blockchain to run the ICO, the largest, and by-far most popular of which is Ethereum. Since EOS is intended to be a major competitor for Ethereum, some have seen this as a hypocritical choice. - Stolen from trogdor on Steam (I couldn’t word it any better myself).
12. Why do the eos.io T&C’s say the ERC-20 token has no value?
The EOS T&C’s famously state:
"The EOS Tokens do not have any rights, uses, purpose, attributes, functionalities or features, express or implied, including, without limitation, any uses, purpose, attributes, functionalities or features on the EOS Platform."
This is legal wording to avoid all the legal complications in this emerging space, block.one do not want to find themselves in a lawsuit as we are seeing with an increasing amount of other ICOs. Most notably Tezos (links below).
This all comes down to legal issues. Anyone who’s been into crypto for 5 minuets knows that government bodies such as the Securities and Exchange Commission (SEC) are now paying attention to crypto in a big way. This legal wording is to avoid all the legal complications in this emerging space, block.one do not want to find themselves in a lawsuit as we are seeing with an increasing amount of other ICOs. Many token creators that launched ICOs are now in deep water for selling unregistered securities.
A filing from the Tezos lawsuit:
"In sum, Defendants capitalized on the recent enthusiasm for blockchain technology and cryptocurrencies to raise funds through the ICO, illegally sold unqualified and unregistered securities, used a Swiss-based entity in an unsuccessful attempt to evade U.S. securities laws, and are now admittedly engaged in the conversion, selling, and possible dissipation of the proceeds that they collected from the Class through their unregistered offering."
To ensure EOS tokens are not classed as a unregistered security block.one has made it clear that they are creating the EOS software only and won’t launching a public blockchain themselves. This task is left down to the community, or more precisely, the Block Producers (BPs). The following disclaimer is seen after posts from block.one:
"block.one is a software company and is producing the EOS.IO software as free, open source software. This software may enable those who deploy it to launch a blockchain or decentralized applications with the features described above. block.one will not be launching a public blockchain based on the EOS.IO software. It will be the sole responsibility of third parties and the community and those who wish to become block producers to implement the features and/or provide the services described above as they see fit. block.one does not guarantee that anyone will implement such features or provide such services or that the EOS.IO software will be adopted and deployed in any way.”
It is expected that many blockchains using eos.io software will emerge. To ensure DAPPs are created on an ecosystem that aligns with the interests of block.one a $1bn fund will be has been created to incentivise projects to use this blockchain.
“A lot of token distributions only allow a small amount of people to participate. The EOS Token distribution structure was created to provide a sufficient period of time for people to participate if they so choose, as well as give people the opportunity to see the development of the EOS.IO Software prior to making a decision to purchase EOS Tokens.”
It is also worth noting that block.one had no knowledge how much the the token distribution would raise as it is determined by the free market and the length of the token distribution is coded into the Ethereum smart contract, which cannot be changed.
14. Where is the money going from the token distribution?
Funding for the project was raised before EOS was announced, the additional money raised from the token distribution is largely going to fund projects on EOS.
A large portion of the money raised is getting put back into the community to incentivise projects using eos.io software. block.one raised all the money they needed to develop the software before the ERC-20 tokens went on sale. There are some conspiracies that block.one are pumping the price of EOS using the funds raised. The good thing about blockchain is you can trace all the transactions, which show nothing of the sort. Not only this but the EOS team are going to have an independent audit after the funding is complete for piece of mind.
From eos.io FAQ:
“block.one intends to engage an independent third party auditor who will release an independent audit report providing further assurances that block.one has not purchased EOS Tokens during the EOS Token distribution period or traded EOS Tokens (including using proceeds from the EOS Token distribution for these purposes). This report will be made available to the public on the eos.io website.”
A more complete list of EOS projects can be found at eosindex.io.
16. Dan left his previous projects, will he leave EOS?
When EOS has been created Dan will move onto creating projects for EOS with block.one.
When a blockchain project has gained momentum and a strong community has formed the project takes on a life of its own and the communities often have ideas that differ from the creators. As we have seen with the Bitcoin and Ethereum hark forks you cant pivot a community too much in a different direction, especially if its changing the fundamentals of the blockchain. Instead of acting like a tyrant Dan has let the communities do what they want and gone a different way. Both the Bitshares and Steem were left in a great position and with Dans help turned out to be two of the most successful blockchain projects to date. Some would argue the most successful projects that are actually useable and have a real use case. What Dan does best is build the architecture and show whats possible. Anyone can then go on to do the upgrades. He is creating EOS to build his future projects upon it. He has stated he loves working at block.one with Brendan and the team and there is far too much momentum behind EOS for him to possibly leave.
No one could have better knowledge on this subject than our Block Producer candidates, I have chosen to look to EOS New York for this answer:
"DDoS'ing a block producing is not as simple as knowing their IP address and hitting "go". We have distributed systems engineers in each of our candidate groups that have worked to defend DDoS systems in their careers. Infrastructure can be built in a way to minimize the exposure of the Block Producing node itself and to prevent a DDoS attack. We haven't published our full architecture yet but let's take a look at fellow candidate EOSphere to see what we mean. As for the launch of the network, we are assuming there will be attacks on the network as we launch. It is being built into the network launch plans. I will reach out to our engineers to get a more detailed answer for you. What also must be considered is that there will be 121 total producing and non-producing nodes on the network. To DDoS all 121 which are located all around the world with different security configurations at the exact same time would be a monumental achievement."
18. If block producers can alter code how do we know they will not do so maliciously?
Block producers are voted in by stake holders.
Changes to the protocol, constitution or other updates are proposed to the community by block producers.
Changes takes 2 to 3 months due to the fact block producers must maintain 15/21 approval for a set amount of time while for changes to be processed.
To ensure bad actors can be identified and expelled the block.one backed community will not back an open-entry system built around anonymous participation.
For this question we must understand the following.
Governance and why it is used.
The process of upgrading the protocol, constitution & other updates.
Dan’s view on open-entry systems built around anonymous participation.
Governance Cryptography can only be used to prove logical consistency. It cannot be used to make subjective judgment calls, determine right or wrong, or even identify truth or falsehood (outside of consistency). We need humans to perform these tasks and therefore we need governance! Governance is the process by which people in a community:
Reach consensus on subjective matters of collective action that cannot be captured entirely by software algorithms;
Carry out the decisions they reach; and
Alter the governance rules themselves via Constitutional amendments.
Embedded into the EOS.IO software is the election of block producers. Before any change can be made to the blockchain these block producers must approve it. If the block producers refuse to make changes desired by the token holders then they can be voted out. If the block producers make changes without permission of the token holders then all other non-producing full-node validators (exchanges, etc) will reject the change.
Upgrade process The EOS.IO software defines the following process by which the protocol, as defined by the canonical source code and its constitution, can be updated:
Block producers propose a change to the constitution and obtains 15/21 approval.
Block producers maintain 15/21 approval of the new constitution for 30 consecutive days.
All users are required to indicate acceptance of the new constitution as a condition of future transactions being processed.
Block producers adopt changes to the source code to reflect the change in the constitution and propose it to the blockchain using the hash of the new constitution.
Block producers maintain 15/21 approval of the new code for 30 consecutive days.
Changes to the code take effect 7 days later, giving all non-producing full nodes 1 week to upgrade after ratification of the source code.
All nodes that do not upgrade to the new code shut down automatically.
By default, configuration of the EOS.IO software, the process of updating the blockchain to add new features takes 2 to 3 months, while updates to fix non-critical bugs that do not require changes to the constitution can take 1 to 2 months.
Open-entry systems built around anonymous participation To ensure bad actors can be identified and expelled the block.one backed community will not back an open-entry system built around anonymous participation. Dan's quote:
"The only way to maintain the integrity of a community is for the community to have control over its own composition. This means that open-entry systems built around anonymous participation will have no means expelling bad actors and will eventually succumb to profit-driven corruption. You cannot use stake as a proxy for goodness whether that stake is held in a bond or a shareholder’s vote. Goodness is subjective and it is up to each community to define what values they hold as good and to actively expel people they hold has bad. The community I want to participate in will expel the rent-seeking vote-buyers and reward those who use their elected broadcasting power for the benefit of all community members rather than special interest groups (such as vote-buyers). I have faith that such a community will be far more competitive in a market competition for mindshare than one that elects vote buyers."
19. What is the most secure way to generate EOS key pairs?
Block producer candidates EOS Cafe and EOS New York have come forward to help the community with this topic. The block producer candidate eosnewyork has kindly posted a tutorial on steemit detailing the steps that need to be taken to generate key pairs using the official code on the EOS.IO Github. The block producer candidate eoscafe has gone a step further and released an Offline EOS Key Generator application complete with GUI for Windows, Linux & Mac. Not only can this application generate key pairs but it can also validate key pairs and resolve public keys from private keys. This application has also been vouched for by EOS New York
Ferrum Network (FRM) là gì? Phỏng vấn Ian Friend cùng Grace Phạm
https://preview.redd.it/3j38vfdagdh31.png?width=700&format=png&auto=webp&s=0ae4528ed42bb6b1edf9edb522d15f360ddb631b Link bài viết gốc: https://coin98.net/ferrum-network-frm-ama/ Như Coin98 đã từng phân tích, Ferrum Network là dự án Blockchain dịch vụ tập trung vào cung cấp các ứng dụng tài chính hàng ngày. Ferrum Network hoạt động như một sàn giao dịch phi tập trung. Hỗ trợ các đồng Crypto như Bitcoin, Ethereum, Neo, PUR… Một trong những đột phá của Ferrum Network là trợ giúp phát hành các loại tiền điện tử được hỗ trợ bởi các network bên ngoài và các loại tiền pháp định. Để hiểu rõ thêm về dự án Ferrum Network, hãy cùng Coin98 điểm lại những nội dung chính trong buổi AMA với Ian Friend — COO tại Ferrum Network nhé! Ian Friend hiện là đồng sáng lập kiêm COO Ferrum Network. Trước khi gia nhập Ferrum, Ian là một luật sư tại thành phố New York. Đó cũng là nơi ông thành lập đội ngũ nghiên cứu Blockchain cho công ty luật của mình. Sau đó, Ian may mắn gặp được tiến sĩ Naiem Yeganeh và thành lập Ferrum từ đó.
Ferrum Network là gì?
Ferrum Network là sự kết hợp hoàn hảo từ hai tính năng đơn lẻ. Thứ nhất là network với khả năng tương tác tốc độ cao có thể kết nối với bất kỳ Blockchain nào. Thứ hai là khả năng thực hiện các giao dịch của bất kỳ tài sản số hoá nào — ngay cả Bitcoin. Tốc độ hoàn thành giao dịch phải tính bằng mili giây với mức phí gần như bằng không. Trong đó, họ sử dụng công nghệ DAG để đẩy nhanh tốc độ giao dịch tài sản số trong mạng lưới ở mức chỉ vài mili giây với chi phí giao dịch thấp. Đồng thời, các ứng dụng chạy trên mạng lưới của Ferrum sẽ có thể cho phép thực hiện các giao dịch mua bán, trao đổi, lưu trữ các tài sản số mà không cần ký gửi bất kỳ tài sản thật nào.
Điểm nổi bật và triển vọng nhất của Ferrum Network là gì?
Ferrum Network dự kiến ra mắt ba ứng dụng chính. Bao gồm UniFyre Wallet, Infinity DEX và việc ra mắt nhiều cổng thanh toán tiền pháp định ở khắp nơi trên thế giới. Đây thực sự là những ứng dụng mà cộng đồng tiền điện tử cần, nhằm cải thiện cuộc sống của họ. Hiện, sẽ có 2 sản phẩm chạy trên Mainnet khi ra mắt: Kudi và UniFyre. Sau đó là Sub-Zero Wallet (ví trữ lạnh). Sau Mainnet, Ferrum sẽ cho phát triển Infinity DEX.
Cách thức hoạt động của Interoperability Network là gì? Network này có những lợi thế gì so với các network hiện có?
Interoperability Network là một đổi mới từ một thiết kế cũ hơn. Về cơ bản, Interoperability Network sử dụng token proxy có thể đại diện cho bất kỳ tài sản kỹ thuật số nào. Và bởi vì network này chạy trên DAG thay vì Blockchain, các giao dịch có thể được thực hiện ngay lập tức mà hầu như không mất phí.
FRM là gì?
FRM là gas của network. Anh em cần chi FRM để hoàn thành các giao dịch trên Ferrum Network. Điều đặc biệt là mỗi khi một token được sử dụng, nó sẽ được burn ngay lập tức.
Lịch trình release token FRM là gì?
Tất cả token của các nhà đầu tư sẽ được unlock 3 tháng sau TGE. Do đó, thị trường FRM sẽ không xuất hiện áp lực bán liên tục sau 3 tháng đó. Token phân phối cho team dev Ferrum sẽ được lock trong 2 năm. Phần còn lại sẽ được giữ lại trong dài hạn. Ferrum Network có khoản dự trữ mang tên Traction Based Reserve. Đây là những token bị lock trong 1 năm. Sau đó, chúng sẽ được phát hành dần dần dựa trên số lượng token bị burn.
Vì sao Ferrum Network lại chọn DAG thay vì Blockchain?
Lý do Ferrum Network lựa chọn DAG thay vì Blockchain là do chúng vốn nhanh và rẻ hơn so với Blockchain khi giảm thiểu đi công cụ khai thác xác nhận block. Thay vào đó, mỗi giao dịch sẽ xác nhận một giao dịch khác. DAG sẽ phù hợp hơn đối với các giao dịch tốc độ cao và chi phí thấp.
Điểm yếu của Ferrum Network là gì?
Thứ nhất, hiện Ferrum Network không có ngân sách cho các chiến dịch marketing hoặc ngân sách để chi hàng triệu USD cho việc niêm yết trên các sàn giao dịch. Yếu điểm thứ hai nằm ở khâu nhân sự. Đội ngũ cần phải thuê nhiều kỹ sư hơn nữa để nhanh chóng ra mắt các sản phẩm thực.
Người dùng có được trả thưởng khi stake token FRM trong tương lai không?
Sẽ có! Và đặc biệt, người dùng sẽ có thể stake trực tiếp ngay trong ứng dụng Ví UniFyre. Anh em có thể stake ngay khi Mainnet được phát hành vào năm 2020. Song, hiện người dùng vẫn có thể kiếm được FRM thông qua social mining. Hình thức mining này hoạt động dựa trên số tiền anh em giữ cộng với giá trị anh em cung cấp cho hệ sinh thái ở dạng tweet, bài viết, video… Càng chia sẻ thông tin về Ferrum Network nhiều, anh em sẽ càng kiếm được FRM token.
Thông qua mối quan hệ với Fusion, liệu họ có xây dựng được giao thức hàng đầu không?
Fusion được xem là đối tác chiến lược của Ferrum. Mối quan hệ hợp tác này được thiết lập nhằm cùng nhau giải quyết thách thức về khả năng tương tác. Fusion sở hữu công nghệ DCRM — thứ chúng ta sẽ sử dụng để cải thiện Interoperability Network.
Mối quan hệ giữa Ferrum và Gemini là gì? Người dùng sẽ được lợi ích gì từ quan hệ hợp tác này?
Hiện Ferrum đang hợp tác với Gemini để trở thành ứng dụng duy nhất ở Tây Phi cung cấp stablecoin được hỗ trợ bằng USD. Đồng nghĩa, cư dân xứ Nigeria có thể phòng tránh biến động giá Bitcoin, thoát khỏi đồng tiền nội địa vốn đã mất 50% giá trị kể từ năm 2013.
Hiện team dev Ferrum Network đã có bao nhiêu ứng dụng được tạo lập thành công?
Hiện họ đã ra mắt sàn giao dịch Kudi (Kudi Exchange) — cổng thanh toán tiền pháp định tại Châu Phi. Vì là một start-up, do đó Ferrum Network đã xây dựng sàn Kudi với tổng chi phí dưới 100.000 USD. Anh em có thể tìm hiểu thêm tại đây: https://www.kudi.exchange/
Làm thế nào Ferrum Network đối phó với tấn công 51%?
DAG của Ferrum Network là bản hard fork từ IOTA. Và điều này đã bảo đảm thành công cho chính nó trong ít nhất 4 năm nay. Tuy nhiên, Ferrum cũng đã tăng cường thêm một số cập nhật bảo mật quan trọng, gia tăng khả năng tương thích địa chỉ Ethereum để làm cho nó an toàn và hữu ích hơn.
Ferrum hiện chỉ xây dựng 4 sản phẩm? Các nhà phát triển có thể xây dựng dApp trên Ferrum không?
Ferrum sẽ là nguồn mở. Team dev cực kỳ khuyến khích người khác xây dựng ứng dụng trên network. Họ thậm chí còn có quỹ các token khuyến khích các nhà phát triển hoạt động.
Ferrum Network đã huy động được bao nhiêu vốn từ ICO?
Team dev đã cho mở bán ICO và huy động được 1.12 triệu USD. Vòng cuối cùng là 300.000 USD và họ chỉ gọi vốn trong vòng vài phút.
Điều gì khiến team dev quyết định bắt đầu với Kudi Exchange và tại sao lại lựa chọn Châu Phi?
Châu Phi là một thị trường khổng lồ với hàng tỷ người dùng. Trong khi đó, hệ thống tài chính ngân hàng hiện tại đang thiếu sót khá nhiều. Đặc biệt, họ lại rộng cửa chào đón công nghệ Blockchain. Đó là chưa kể đến Nigeria là thị trường lớn thứ 7 trên thế giới về giao dịch BTC. Sắp tới, Kudi khả năng cao sẽ ra mắt tại Đông Nam Á. Hiện, Ferrum đang làm việc với một vài đối tác tiềm năng ở đó để đẩy nhanh tiến độ hoạt động này.
Vì sao Ferrum không tập trung vào phát triển DEX?
Các sàn DEX sẽ là xu hướng dài hạn trong tương lai. Song, chúng ta vẫn sẽ cần đến các sàn CEX như fiat onramp/ offramp. Các cổng fiat này được quy định bởi các quy tắc tài chính và không thể được phân cấp hoàn toàn. Trong khi đó, Ferrum cung cấp nhiều cổng fiat để mua tiền mã hoá bằng tiền pháp định. Nhưng ngay sau đó, anh em sẽ được tham gia vào một hệ sinh thái phân quyền có lợi ích tối ưu về chi phí, quyền riêng tư, tốc độ và phạm vi toàn cầu.
Ferrum Network có kế hoạch gì thu hút user cho các dApp trên network hay không?
Kế hoạch đầu tiên là team dev đã quyết định ra mắt một sản phẩm hữu ích (cổng fiat và ứng dụng thanh toán) tại khu vực tăng trưởng cao của Tây Phi. Dù không có nhiều ngân sách cho các chiến dịch marketing lớn. Song, Ferrum vẫn có thể thực hiện những chương trình nhỏ ở Nigeria. Họ hiện đang tổ chức sự kiện tại các trường đại học nội địa Nigeria, gia nhập vào các hệ thống điểm bán hàng… Đối với ví UniFyre, Ferrum sẽ thực hiện một chiến dịch marketing lớn. Chẳng hạn như trả phần khi sử dụng ứng dụng.
Hướng phát triển sắp tới của Ferrum Network
Số lượng token sẽ tăng lên khi Ferrum Network có được nhiều người dùng hơn. Sản phẩm tiếp theo đội ngũ sẽ ra mắt mang tên UniFyre Wallet. UniFyre Wallet là non-custodial ví, sở hữu các tính năng độc đáo như tự động lấy lại tài sản nếu người dùng mất điện thoại; tự quản lý private key. Ứng dụng ví này cũng cho phép stake bất kỳ token nào và giao dịch OTC trực tiếp, không rủi ro, không trung gian. Thị trường của UniFyre hiện khá lớn. Đây là ứng dụng dành cho những ai muốn đảm bảo quyền riêng tư và tự kiểm soát cho ví tiền của mình. Song, vẫn đảm bảo được hỗ trợ khi gặp sự cố cần phục hồi lại số tiền mã hoá của mình nếu bị mất hoặc bị hack. Anh em có thể tìm hiểu thêm về dự án tại đây https://unifyre.io/. Hiện đệ trình niêm yết lên Binance DEX của Ferrum Network đang chờ duyệt. Họ đang chờ đợi các validator vote. Ferrum Network cũng đã làm việc với nhiều sàn giao dịch và sẽ sớm thông báo tên các sàn sẽ list FRM trong tương lai gần. Để theo dõi tiến trình dự án, anh em có thể tham khảo thêm tại https://github.com/ferrumnet #FerrumNetwork #Coin98 #AMA #FRM #Blockchain
I thought it would be good to post a series of articles explaining some features of my new mining pool, mvis.ca. First off is the Stratum Protocol. But to understand the stratum protocol we first need to understand what came before it, namely, the RPC protocol.
RPC stands for Remote Procedure Call. The mining software uses this protocol to continuously poll the mining pool via an HTTP request to see if any of the mining parameters have changed. It is somewhat analogous to kids in the back seat of your car on a long trip, continuously asking “Are we there yet? Are we there yet? Are we there yet?” Gets annoying real quick. Some miners configure their software to poll the mining pool multiple times per second. Obviously, with many miners, this is very inefficient and places a heavy load on the mining pool. In the very early days of cryptocurrency this was how all pools operated, but soon someone came up with something better, namely the Stratum protocol.
The Stratum protocol, on the other hand, avoids continuously polling the pool by establishing a persistent TCP connection with the mining pool. (It’s like phoning someone and keeping the line open.) When the link is first opened the mining pool sends the current mining parameters to the miner. Whenever the mining parameters change, the mining pool simply sends the new values down to the miner on the open TCP link. Very fast. Very efficient. Nobody gets annoyed. There's only one problem though - most of the software used to mine 0xBTC does not yet support the stratum protocol. The solution is to use a Stratum Proxy
A Stratum Proxy is a program that acts as both a stratum client and an RPC server. You would typically run it alongside your mining software. As a stratum client, it connects up to the pool using the stratum protocol in order to obtain the current mining parameters. As an RPC server, it configures itself to listen on port 8080 in order to serve RPC requests from your mining software. Once you have the proxy running and configured, simply point your miner to http://localhost:8080. The mining software will think it's connected to a regular pool using the RPC protocol. You can read more about the proxy program here. And that's about it. If you would like to mine at MVIS Mining Pool, please see the faq for detailed mining instructions. There's also a link to some detailed specs on the stratum protocol as implemented on my pool.
MESSAGE TESTING! Looking for feedback, comments, and suggestions from the community
Hey everyone, the Komodo marketing team is finalizing some copy that will be used to send to people interested in building on Komodo. We'd like to message test this with the community before finalizing so please let us know if you have any suggestions or feedback. Thanks everyone! END-TO-END BLOCKCHAIN SOLUTIONS Komodo Platform is a thriving, open-source ecosystem of cutting-edge technologies in the burgeoning blockchain sphere. It is Komodo’s mission to accelerate the global adoption of blockchain technology by removing barriers to entry for developers, blockchain startups, and existing businesses alike with simple, end-to-end blockchain solutions. When looking to integrate blockchain tech, there are many competing technologies and platforms to choose from. What sets Komodo Platform apart from the competition is a proven track record of identifying and innovating solutions to all of blockchain’s most pressing problems. Rather than focusing on a single use case or feature, Komodo Platform has built a comprehensive toolkit of blockchain solutions that addresses every essential aspect of the technology. In particular, Komodo’s tech focuses on providing top-notch security, scalability, and interoperability, as well as hybrid privacy features. This holistic approach ensures that all who build on Komodo have the tools they need to be successful, including a variety of customizable white-label products that slash time to market while still providing complete flexibility and control. All of these strengths, combined with a clear vision for a global blockchain ecosystem, make Komodo Platform the world’s leading provider of end-to-end blockchain solutions. AN ECOSYSTEM THAT ALWAYS PUTS SECURITY FIRST For Komodo Platform, security comes first. Security is always at the forefront of the development process. As such, every blockchain launched on Komodo Platform is protected with the power of the Bitcoin hashrate. At the same time, all blockchains built on Komodo are protected by Komodo’s innovative security mechanism, known as delayed Proof of Work (dPoW), which stores backups of the entire Komodo ecosystem onto the Bitcoin ledger every ten minutes. Here’s how it works. Every ten minutes, a snapshot is taken of the entire Komodo ecosystem. Then, this snapshot is written into a block on the Bitcoin blockchain. This process is called notarization and it is the backbone of Komodo’s security mechanism. Komodo Platform’s notary nodes carry out the technical work required to successfully complete notarizations. In essence, dPoW functions as a form of 2FA for blockchain projects. A potential attacker would need to take down both the BTC and KMD networks before they could alter, disrupt, or destroy your chain. Since the backup process takes place every ten minutes, your chain is constantly protected. LIMITLESS SCALABILITY WHENEVER YOU NEED IT Komodo provides every project built on the platform with virtually limitless scalability. A new feature from Komodo allows multiple blockchains to work in unison and behave as a single chain. If one blockchain is no longer providing the performance you need, simply add another chain. If two isn’t sufficient, add a third. With Komodo Platform, you can scale on demand to keep up with the the needs of your business. No other blockchain platform offers both this level of security and scalability. Some blockchain platforms can provide security, although you’re forced to share infrastructure with other projects. This increases congestion and transaction fees, thus limiting scalability. Other blockchain platforms offer independent blockchains but leave you to your own devices when it comes to security. This is especially troublesome if you’re using a Proof of Work (PoW) consensus mechanism, since most projects generally do not have a high enough hashrate to protect themselves from 51% attacks. Without security, scalability is completely irrelevant. THE INDEPENDENCE AND FLEXIBILITY YOU NEED Blockchains created on Komodo are completely independent in the sense that what happens on one chain cannot and will not affect any other chain in the ecosystem. This is true because, unlike other platforms, chains launched on Komodo do not share infrastructure or networks. As a result, there is no need to worry about congestion on Komodo Platform. There will never be an increase in the fees or length of time required to complete a transaction. Moreover, projects built on Komodo may migrate away from the platform at any point in time. If, at any point in time, you feel that another platform is better-suited for the needs of your project, you are free to leave. Every blockchain launched on Komodo is the property of those who created it. There is no vendor lock-in on Komodo Platform. Finally, every project effectively receives a clone copy of the KMD chain, so as Komodo continues to innovate new technologies, every chain in the ecosystem receives all of the additional enhancements and features. This lets you build on Komodo with peace of mind. Future-proof your project by building on the world’s premier blockchain platform: Komodo. CREATE A CUSTOMIZABLE BLOCKCHAIN WITH MAXIMUM FLEXIBILITY
Customization — choose from optional modules to build a tailor-made solution
Scalability — scale on demand to keep up with your project’s growth
Independence — no shared infrastructure, blockchains, or networks
Komodo Assetchain Features
Algorithm: Equihash PoW
Max Supply up to 500,000,000
Optional Premine (up to 10 Billion coins; recommended maximum of 2 Billion)
Customizable Mining Rewards
Set block reward amounts
Choose an end to block reward period
Customizable Block Reward Halving
Select number of blocks between adjustments of block rewards
Optional decay halving (e.g. 25% instead of 50%)
2mb Block Size
1 minute Block Time or On-Demand Block Generation
Zero-Knowledge Privacy Technology
KV-Storage Database Technology
Atomic Swap Technology – including between BTC-based-protocol & ETH / ERC-20
Optional Komodo Security Service
New Features In Testing & Development
New Algorithm: Proof of Stake (PoS)
New Algorithm: Combination of PoW/PoS (any weight/percentage)
According to block reward: For each block reward, a small percentage of the block reward created is sent to central authority (e.g. governing body, franchise)
According to transactions: A small percentage of each transaction is sent to central authority (e.g. governing body, franchise)
On-DemandScaling: Assetchain Clusters enables multiple chains to function as one
ACCELERATE TIME TO MARKET WITH KOMODO’S WHITE-LABEL SOLUTIONS Once you’ve created your very own secure, scalable, independent blockchain, Komodo offers several white-label apps to help you go to market faster. A multi-coin cryptocurrency app, an atomic-swap-powered decentralized exchange app, and a decentralized crowdfunding app are all included in Komodo’s Blockchain Starter Kit. WHITE-LABEL MULTI-COIN WALLET After your blockchain is operational, users will need somewhere to store that chain’s tokens. However, it can be difficult and expensive to have a new coin or token integrated into an existing crypto wallet. Developing a native crypto wallet is also a long and costly process. That’s why Komodo provides every project with the option of a white-label multi-coin wallet app. Not only will users be able to store your chain’s tokens in it, they will also be able to store other popular cryptocurrencies like Bitcoin, Litecoin, ZCash, and KMD, Komodo’s native coin. WHITE-LABEL DECENTRALIZED EXCHANGE In addition, Komodo offers every project the choice of a white-label decentralized exchange app. Komodo’s decentralized exchange (DEX) will provide the backend tech necessary for the white-label app to function. Komodo’s DEX is the world’s only truly decentralized exchange. While many exchanges claim to be decentralized, they still use proxy tokens, force users to give up their private keys at some point in the trading process, or give admin a backdoor option to freeze a user’s funds. By contrast, Komodo’s DEX is fully-powered by atomic swap technology. Atomic swaps are peer-to-peer exchanges of cryptocurrency that allow users to retain control of their private keys throughout the entire trading process. As this method of trading occurs wallet-to-wallet, the need for centralized exchanges or other third parties is eliminated. If a project built on Komodo uses the white-label decentralized exchange app, their blockchain’s tokens will be integrated into the DEX, providing instant access to liquidity. This is an enormous benefit, as many centralized exchanges charge exorbitant fees for listing a new coin or token. WHITE-LABEL DECENTRALIZED CROWDFUND APP The final white-label app included in Komodo’s Blockchain Starter Kit is a white-label crowdfunding application. This app is also powered by Komodo’s industry-leading atomic swap technology. Crowdfunds launched on Komodo Platform are therefore more secure and much faster than a traditional, centralized ICO. Investors maintain possession of private keys throughout the crowdfund. Once the atomic swap is complete, they receive your chain’s tokens instantly. Komodo’s Blockchain Starter Kit is designed to give you the products and technology you need to accelerate time to market and allow you to focus on ensuring that your project is a success. INVESTMENT PROTECTION: A VISION FOR A GLOBAL BLOCKCHAIN ECOSYSTEM The blockchain industry is currently developing at a breakneck pace. For this reason, it is absolutely essential to build on a platform that continues to evolve. At the rate the blockchain industry is currently moving, every platform must continue to evolve or face extinction. With a long-term vision and a strong commitment to continuing development, Komodo Platform provides the investment protection you need to build comfortably. Over the last several years, Komodo has been in a constant state of development. Komodo has completed more GitHub commits than any other blockchain project in existence. As Komodo is constantly innovating new technologies at the cutting-edge of the industry, you can build on Komodo Platform without worrying about your project falling behind. With a clear vision for a global blockchain ecosystem, Komodo is leading the blockchain sphere by developing and implementing solutions to some of blockchain’s most pressing problems. In particular, Komodo is advancing blockchain technology with respect to these five essential features: security, scalability, interoperability, privacy, and simplicity. Komodo’s unique dPoW security mechanism protects the entire ecosystem with the power of the Bitcoin hashrate. With the ability to launch several chains to meet the performance demands of any project, Komodo is also the world’s most scalable blockchain platform. Atomic swap technology, pioneered by Komodo Platform, was the first major development towards interoperability. Komodo’s DEX is the world’s most advanced with over 110,000 atomic swaps completed. Users exchange tokens directly with other users, from one wallet to another. Now, Komodo is advancing interoperability with an innovative new feature that allows thousands of chains to process transactions simultaneously while cross-notarizing and allowing inter-chain transaction proofs. This technology is still in development but will make Komodo a fully-interoperable ecosystem and allow as many as 1 million transactions per second. Komodo also provides hybrid privacy solutions, such as permissioned and permissionless blockchains as well as optional zero-knowledge transfers of value to protect user privacy. These end-to-end blockchain solutions are readily available with the simplicity of white-label apps and with support from expert third-party service providers. Get started with Komodo now. BEGIN BUILDING ON KOMODO PLATFORM TODAY If you’re ready to implement blockchain solutions, there are two certified third-party Komodo Solution Integrators that can help you navigate your journey into blockchain technology.
Hey guys, I thought I would put together an in-depth tour of the Gridcoin wallet software for all of our recent newcomers. Here I'll be outlining all the features and functions the windows GUI wallet has to offer, along with some basic RPC command usage. I'll be using the windows wallet as an example, but both linux and macOS should be rather similar. I'll be including as many pictures as I can as embedded hyperlinks. Edit: Note that since I originally made this there has been a UI update, so your client will be different colors but all the button locations are in the same place. This is my first post like this, so please forgive me if this appears a little scatter-brained. This will not cover the mining setup process for pool or solo miners. When you launch the wallet software for the first time you should be greeted with this screen.
If you're a pool miner or investor, press cancel.
If you're a solo miner, enter your email you used to sign up for projects and press OK.
If you're not sure or haven't decided yet, press cancel. We can come back to this later.
After that prompt, you should be left sitting on the main overview tab with several fields on it. From top to bottom:
Available: All coins available to be sent or staked (I'll cover this term later).
Stake: All coins that are currently staking.
Unconfirmed: All coins that have been received and have not yet received 110 confirmations.
Total: All coins in your wallet. (The sum of the above fields)
Blocks: How many blocks your client has in it's chain. Your wallet just started syncing with the network so this number will be low.
Difficulty: How difficult it is for someone to stake the next block.
Net Weight: An estimate for how many coins are staking on the entire network.
Coin Weight: How many of your coins that are currently staking.
Magnitude: A quantifier for how much work you put in mining. For solo miners only. For pool miners, this value will always be 0.
Project: Displays the projects you're working on, one at a time. For solo miners only. For pool miners, this will always say "INVESTOR".
CPID: Cross Project Identifier. Used to keep track of users across projects. For solo miners only. For pool miners, this will always say "INVESTOR".
Status: Displays various status messages.
Current Poll: Displays the latest poll.
Client Messages: Displays various client messages.
Now onto the other tabs on the left side. Currently we're on the Overview tab, lets move down to the Send tab. This tab it pretty self-explanatory, you use it if you want to send coins, but I'll go over the fields here:
Pay To: Enter a valid gridcoin address to send coins too. Gridcoin addresses always start with an S or and R.
Label: Enter a label here and it will put that address in your "address book" under that label for later use. You can leave it blank if you don't want it in your address book.
Message: Enter a message here if you want it attached to your transaction.
Amount: How many coins you want to send.
Add Attachment: Leave this alone, it is broken.
Track Coins: This doesn't do anything.
Now down to the Receive tab. Here you should have a single address listed. If you double click on the label field, you can edit it's label.
New: Generate a new address.
If you click on an address, the rest of the options should be clickable.
Copy: Copy the selected address to your clipboard.
Show QR Code: Show a scan-able QR code for the selected address.
Sign Message: Cryptographically sign a message using the selected address.
The Transactions tab is pretty boring considering we have no transactions yet. But as you can see there are some sorting tools at the top for when you do have transactions listed.
ADDRESS BOOK TAB
The Address Book is where all the addresses you've labeled (that aren't yours) will show up.
Verify Message: Verifies a message was signed by the selected address.
The rest of the functions are similar to the functions on the Receive tab.
Onto the Voting tab. There wont be any polls because we aren't in sync yet.
Reload Polls: Pretty self-explanatory, I've never had to use this.
Load History: By default, the wallet will only display active polls. If you want to view past polls you can use this.
Create Poll: You can create a network-wide poll. You must have 100,000 coins as a requirement to make a poll. (Creating a poll does not consume the coins)
Display coin control features (experts only!): This allows you to have a great deal of control over the coins in your wallet, check this for now and I'll explain how to use it further down. Don't forget to click "Apply".
ENCRYPTING YOUR WALLET
Now that all of that is out of the way. The first thing you'll want to do is encrypt your wallet. This prevents anybody with access to your computer from sending coins. This is something I would recommend everyone do. Go to Settings > Encrypt Wallet and create a password. YOU CANNOT RECOVER YOUR COINS IF YOU FORGET YOUR PASSWORD. Your wallet will close and you will have to start it up again. This time when it opens up, you should have a new button in the bottom left. Now if you want to stake you will have to unlock your wallet. Notice the "For staking only" box that is checked by default. If you want to send a beacon for solo mining or vote, you will need to uncheck this box.
GETTING IN SYNC AND ICONS
Before we continue, Let's wait until we're in sync. Depending on your internet speeds, this could take from several hours to over a day or 2. This can be sped up by using Advanced > Download Blocks, but this can still take several hours. This is what an in-sync client should look like. Notice the green check to the right of the Receive tab. All of these icons give you information when you hover your mouse over them. The lock The arrow tells you if you're staking. If you aren't staking, it will tell you why you're not staking. If you are staking it will give you an estimated staking time. Staking is a very random process and this is only an estimate, not a countdown. The connection bars tell you how many connections to the network you have. The check tells you if you're in sync.
WHAT IS STAKING?
Now I've said "stake" about a million times so far and haven't explained it. Gridcoin is a Proof of Stake (PoS) coin. Unlike bitcoins Proof of Work (PoW), PoS uses little system resources, so you can use those resources for scientific work. PoS works by users "Staking" with their balance. The higher the balance, the higher the chance to create, or "stake" a block. This means you need to have a positive balance in order to stake. Theoretically, you can stake with any amount over 0.0125 coins, but in practice it's recommended to have at least 2000 coins to reliably stake. Staking is important for solo miners, because they get paid when they stake. Pool miners don't need to stake in order to get paid however. So if you want to solo mine, you'll need to buy some coins from an exchange or start in the pool first and move to solo when you have enough coins. In addition to Research Rewards for miners, anyone who holds coins (solo miners, pool miners, and investors) gets 1.5% interest annually on top of your coins. So it can be beneficial for pool miners to stake as well. Here is a snippet of what a research rewards transaction looks like from my personal wallet. I have a label on that address of "Payout address" as you can see here.
UTXOS AND COIN CONTROL
At this point you'll need some coins. You can use one of our faucets like this one or this one to test coin control out. First let me explain what a UTXO is. UTXO stands for Unspent Transaction Output. Say you have an address with 0 coins in it, and someone sends you 10 coins like I've done here. Those 10 coins are added to that address in the form of a UTXO, so we have an address with one 10 coin UTXO in it. Now we receive another 5 coins at the same address, like so. Now we have an address with one 10 coin UTXO and one 5 coin UTXO. But how do we view how our addresses are split up into different UTXOs? Earlier we checked the "Display coin control features" box in Settings > Options > Display. Once that's checked you'll notice there's another section in the Send tab labeled "Coin Control Features". If you click the "Inputs" button, you'll get a new window. And look, there's our 2 UTXOs. All UTXOs try to stake separately from each other, and remember that the chance a UTXO has to stake is proportional to it's size. So in this situation, my 10 coin UTXO has twice the chance to stake as my 5 coin UTXO. Now wallets, especially ones that make a lot of transactions, can get very fragmented over time. I've fragmented my wallet a little so I can show you what I'm talking about. How do we clean this up? We can consolidate all this into one UTXO by checking all the boxes on the left and selecting OK. Now pay attention to the fields on the top:
Quantity: The total amount of UTXOs we have selected.
Amount: The total amount of coins we have selected.
Fee: How much it would cost in fees to send all those UTXOs (more UTXOs = more transaction data = more fees)
After Fee: Amount - Fees.
Bytes: How large the transaction is in bytes.
Priority: How your client would prioritize making a transaction with this specific set of UTXOs selected had you not used coin control.
Low Output: If your transaction is less than 0.01 coins (I think).
custom change address: You can set the address you get your change back at, by default it will generate a new address.
So let's fill out our transaction so we end up with 1 UTXO at the end. In "Pay To:" Just put any address in your wallet, and for the amount put what it has listed in the "After Fee" Field. Just like this. Notice how we get no change back. Now click "Send", we'll be prompted to enter our passphrase and we're asked if we want to pay the fee, go ahead and click "Yes". Now if we go back to the Overview tab we get this funky icon. If you hover your mouse over it, it says "Payment to yourself", and the -0.0002 GRC is the network transaction fee. (Ignore the first one, that was me fragmenting my wallet) Now if we look at the Coin Control menu, we can see that we've slimmed our wallet down from 7 UTXOs to 1. Now why would you want to use coin control? 2 Situations:
UTXOs less than 0.0125 coins cannot stake. So you can combine a lot of tiny, useless UTXOs into 1 bigger one that can stake.
After a UTXO stakes, it cannot stake for another 16 hours. So if you have 1 large UTXO that is big enough to stake more than once every 16 hours, you can split it into smaller UTXOs which can allow you to stake slightly more often.
By default, the wallet will always generate a new address for change, which can make your wallet get very messy if you're sending lots of transactions. Keep in mind that more UTXOs = larger transactions = more fees.
Sidenote - When you stake, you will earn all research rewards owed reguardless of which UTXO staked. However, you'll earn the 1.5% interest for that UTXO. Not your whole wallet.
A fork is when the network splits into multiple chains, with part of the network on each chain. A fork can happen when 2 blocks are staked by different clients at the same time or very close to the same time, or when your client rejects a block that should have been accepted due to a bug in the code or through some other unique circumstance. How do I know if I'm on a fork? Generally you can spot a fork by looking at the difficulty on your Overview tab. With current network conditions, if your difficulty is below 0.1, then you're probably on a fork. You can confirm this by comparing your blockhash with someone elses, like a block explorer. Go to [Help > Debug Window > Console]. This is the RPC console, we can use to do a lot of things. You can type help to get a list of commands, and you can type help [command you need help with] (without the brackets) to get information on a command. We'll be using the getblockhash [block number] command. Type getblockhash [block number] in the console, but replace [block number] with the number listed next to the "Blocks:" field on the Overview tab. This will spit out a crazy string of characters, this is the "blockhash" of that block. Now head over to your favorite block explorer, I'll be using gridcoinstats. Find the block that you have the hash for, use the search bar or just find it in the list of blocks. Now compare your hash with the one gridcoinstats gives you. Does it match? If it matches, then you're probably good to go. If it matches but you still think you're on a fork, then you can try other block explorers, such as gridcoin.network or neuralminer.io. If it doesn't match, then you need to try to get off that fork. How do I get off a fork?
Just wait for an hour or two. 95% of the time your client is able to recover itself from a fork given a little time.
Restart the client, wait a few minutes to see if it fixes itself. If it doesn't restart again and wait. Repeat about 4 or 5 times.
Find where the fork started. Using the getblockhash command, go back some blocks and compare hashes with that on a block explorer so you can narrow down what the last block you and the block explorer had in common. Then use reorganize [the last block hash you had in common]. Note that reorganize takes a blockhash, not a block number.
A listening node is a node that listens for blocks and transactions broadcasted from nodes and forwards them on to other nodes. For example, during the syncing process when you're getting your node running for the first time, you're downloading all the blocks from listening nodes. So running a listening node helps support the network. Running a gridcoin listening node is simple. All you need to do is add listen=1 to your gridcoinresearch.conf and you need to forward port 32749 on your router. If you don't know how to port forward, I'd suggest googling "How to port forward [your router manufacturer]".
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