Spectrecoin

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SpectreCoin (XSPEC) is an innovative privacy focused cryptocurrency, featuring an energy-efficient proof-of-stake algorithm that provides rapid transaction confirmations, ring signatures for privacy and anonymity, and a fully integrated Tor+OBFS4 layer for IP obfuscation within the wallet. Spectrecoin is actively developed, with an ambitious roadmap that prioritises privacy, security, and true decentralisation with features such as default stealth addresses and stealth staking, and low-power mobile wallet staking in our upcoming Android wallet. - Official FAQ

The goal of the Spectre project is to develop tools for private financial transactions and private communication. Unlike other projects, we're not only focusing on the "private transactions" part, that is sending money anonymously, but take a more holistic approach to protect the user's privacy. All communication is happening exclusively on the Tor network. Our goal is to establish a private payment ecosystem using mobile phones, similar to cash and inspired by Hawala and Localbitcoins. The mobile app will feature a chat, a wallet and a web of trust system to find good peers, all running over the Tor network to hide the user's locations. The name of the app will be "Spectre Cash". To lay a solid foundation for this great vision, we're also aiming at improving and innovating on the basic cryptocurrency technology and making Spectre a solid and private general-purpose currency[1].

All development is funded by the community.

Please also take a look at the Official FAQ and a slightly different FAQ by Gandalf86: https://github.com/bitcoinx2/spectre/wiki/FAQ

Specifications[edit]

Variable Value
Ticker XSPEC
Announcement date October 20, 2016
Consensus method Proof-of-Stake 3.0
Initial supply 20,000,000
Max supply None
Block time 60 seconds
Staking interest 5% p.a.
Block reward ~2 XSPEC
Maturity 288 blocks
Min stake age 8 hours
Initial distribution ICO
Average ICO price ~83 sat

Spectrecoin Review (XSPEC)[edit]

SpectreCoin was created in 2016 to improve on the concept of ShadowCash (SDC). The ICO took place starting Nov 20, 2016, until Jan 8, 2017. The goal was to add Tor integration to the ShadowCash codebase, and further extend the concept of an anonymous currency to target remittances via a mobile application, using a system inspired by Hawala. To release the ICO funds through an escrow, the Tor integration part was completed and submitted a few days after the ICO had ended.

Unfortunately, only few funds could be acquired during ICO, totaling to ~17 BTC (~16,000 USD at that time). The reason for this was unclear, part of it could be a bad timing and some people calling it a scam or "ShadowCash clone" repeatedly. Still as planned, the entirety of 20 Mio. XSPEC was proportionally distributed to the participating investors, resulting in an astonishing ICO price of only 83 sat on average (most investors paid more like 90 sat per coin, due to a bonus system to benefit early birds during ICO). As soon as the Tor integration was submitted and the coin was listed on exchanges, it was traded at a more realistic price of 1000-2000 sat, leading to a very high initial return for ICO investors. A large portion of the money acquired through the ICO was immediately spent on paying the contracted developers for their initial development work.

Since April 2017, the ShadowCash project has been abandoned for a new project of the ShadowCash developers called Particl, which ultimately stopped the accusations of SpectreCoin being a ShadowCash clone.

During summer 2017, SpectreCoin founder mandica started facing serious health issues and finally handed over the project leadership to lead developer jbg, who is now developing the coin.

On Aug 9, 2017, SpectreCoin version 1.3.0 was released by jbg. This update fixed a lot of issues in the old codebase, updated Tor, included a 32-bit binary for Windows and added support for the OBFS4 obfuscation protocol. Also, a new website was created on https://spectreproject.io/ with updated information and a new, clean design to display the philosophy of the new project leadership.

From Aug 20 to Aug 25, 2017, the community raised ~37,500 XSPEC and 1 BTC (which was about ~$4000 USD at that time) to fund development, which allowed jbg to quit his job and work as a full-time developer for SpectreCoin.

Sept 10, 2017, an ex-colleague of jbg, @brycel, joined the project as a cryptographer in order to improve the stealth transaction mechanism, so that it could be used as the default transaction mechanism in future versions. Brycel was initially paid by Mandica from her own pocket to work for 1 month.

Sept 11, 2017, wallet version 1.3.1 was released by jbg, which addressed a visual bug in previous wallet versions that had become known as the infamous zero-balance bug, because it made the users balance appear as zero. Furthermore, this release was the first to include a binary for Apple MacOS. A change to the stealth transaction mechanism was introduced so that the wallet allows for non-anonymous ring signatures with only 1 or 2 members. The reason for this was that at that stage, the network often did not have enough participants for ring signatures to do a full ring signature transaction. On the same day, version 1.3.2 was released that fixed a minor bug in version 1.3.1.

Sept 12, 2017, version 1.3.3 was released, which fixes some further GUI issues, and brings faster wallet startup and sync performance.

During October, the community raised additional funding for Brycel so that he could continue working on the project.

Wallet version 1.3.4 with an updated Tor version, new node list and a stake reward donation system was to be released on Feb 8, 2018, but got delayed due to a leveldb transition issue and a Qt4 bug on Windows. The decision was made to skip 1.3.4 and instead port the wallet to Qt5, which would become version 1.3.5.

XSPEC[edit]

XSPEC coin is an anonymous, untraceable, energy-efficient cryptocurrency powered by the Proof-of-Stake v3 consensus mechanism. Cryptocurrency also features an advanced HD wallet with a wide range of features and options to customize.

Spectrecoin Price (XSPEC)[edit]

XSPEC market cap on 09 JUNE 2018: $$5,856,976
XSPEC price on 09 JUNE 2018: $$0.28

Exchanges[edit]

You can use exchanges to buy and sell Spectre coins (XSPEC) for Bitcoin (BTC). They are free to use, you just need to make an account and deposit some BTC to the site. You need to get Bitcoin from somewhere else, first. Spectrecoin is available to buy on Cryptopia, Novaexchange, Trade Satoshi and Livecoin. Unfortunately, Binance or Bittrex do not have support of XSPEC Coin.

After you bought XSPEC from one of the exchanges, you should transfer them to your wallet. See the Download section below. Sending coins to someone else directly from an exchange does NOT give you the same anonymity guarantees as if you use the standalone wallet!

Regarding adding SpectreCoin to additional exchanges, see the FAQ entry Why isn’t Spectrecoin on more exchanges?.

Current development[edit]

For version 1.3.5:

  • Port wallet to Qt5
  • Updated node list
  • Updated included Tor to the newest version
  • A new and innovative staking reward donation system (SDS, staking donation system), which will allow users to donate a certain percentage of their staking rewards to the developers to fund development.

For more info, see http://spectreproject.io/roadmap/

Tor integration[edit]

Many cryptocurrencies today support connecting your wallet to other nodes on the network through Tor in some way. With these coins, other nodes are still addressed by their IP address, but each user has the choice to hide his IP address by routing his traffic through several hops on the Tor network, including one entry and one exit node. Such a scheme has several downsides. For example, the exit node can read the unencrypted traffic that goes from a node that uses Tor (A), to a node that doesn't use Tor (B), and can act as a man-in-the-middle. Furthermore, exit nodes could collaborate and prevent A (or any cryptocurrency user that tries to use Tor) from doing transactions altogether. Finally, if not every coin node uses Tor, an attacker could analyse the network structure at the unprotected nodes and maybe use timing analysis attacks or correlation attacks to deanonymize nodes that are routing through Tor[2].

In SpectreCoin, all nodes on the network are operating as Tor hidden services. They are not addressed by their IP address, but by their .onion address which encodes a public key used for traffic encryption along with a way to find a route to that node. No exit nodes are involved, and at any point in time, the communication between two nodes is fully encrypted. SpectreCoin comes bundled with the latest Tor software that has been included without any functional changes. It is not possible to connect to the SpectreCoin network without using Tor, as all nodes are only reachable via their hidden service address. No real IP addresses are known to any network participant except for their own, and it is infeasible for an attacker to analyze the network structure or censor the network.

OBFS4[edit]

SpectreCoin has inbuilt support for OBFS4 to use it with Tor Pluggable Transports. OBFS4 is an obfuscation protocol that hides the nature of the traffic that goes through it. By incorporating OBFS4, it is possible to use SpectreCoin even in countries where access to the Tor network is censored, like China or Iran. It is currently the recommended pluggable transport of the Tor project. More info can be found on the Pluggable Transports page of the Tor website.

Comparison with other coins[edit]

In this section we will answer the common question of "How does SpectreCoin compare to X?", where X is one of the following coins.

CloakCoin[edit]

  • Both Cloak and SpectreCoin use PoS only and don't have masternodes.
  • Cloak has 6% inflation, SpectreCoin has 5% inflation.
  • Both have a block time of 60 seconds.
  • Cloak uses the proprietary terms "CloakShield" and "ENIGMA transactions", while SpectreCoin uses Tor and ring signatures. This makes SpectreCoin technology easier to understand.
  • Cloak seems to also target applications sending data between each other via the Cloak network, while SpectreCoin focuses on being simply a currency.
  • While CloakCoin has its own onion routing network, SpectreCoin is part of the official Tor network. This makes SpectreCoin more anonymous (as there are much more nodes participating in the network), and more difficult to censor.
  • Cloak's ENIGMA protocol seems to be based on mixing, whereas SpectreCoin uses untraceable ring signatures that we find to be more efficient and also more secure: Ring signatures (using private fixed-size tokens) are information-theoretically anonymous, while mixed transactions could possibly be prone to correlation attacks and malicious nodes.
  • All funds are visible on the blockchain, whereas in SpectreCoin, funds that are stored as private balance (tokens for ring signatures) are not publicly visible.

DeepOnion[edit]

  • DeepOnion gives you free money, SpectreCoin does not.
  • Both operate on the Tor network.
  • DeepOnion uses both Proof-of-Work and Proof-of-Stake, SpectreCoin uses Proof-of-Stake only
  • DeepOnion does not offer transaction privacy, all transactions are publicly visible. In addition, SpectreCoin also supports stealth addresses and ring signatures for private sending and receiving of coins.
  • Users are able to send encrypted messages using DeepOnion, this does not quite work with SpectreCoin yet, although we will be adding that feature.
  • DeepOnion is a marketing-airdrop scheme on Bitcointalk, whereas SpectreCoin had a plain ICO.
  • The last time we checked (during the airdrop), the developer of DeepOnion held the majority of the coin supply. Right now, we could not find any block explorer that displayed the (unmodified) rich list, to check whether this is still the case or not. In contrast, SpectreCoin is fully transparent about the information that is publicly available, such as the balance of addresses that hold a public (i.e. not private) balance. This can be checked via a number of block explorers (see section Project links). The SpectreCoin devs do not hold a significant portion of the coin supply, as that would have significant implications for the trustworthiness and security of the coin (as for any other blockchain-based cryptocurrency).
  • The Spectre project has a vision that goes beyond private transactions and targets to establish a private payment ecosystem similar to cash, whereas DeepOnion does not seem to have any further goals beyond having an anonymous currency.

Monero[edit]

  • Monero is a much bigger project than SpectreCoin and has a lot more devs, but also a much higher price. So Spectre has bigger potential to grow.
  • Monero uses Proof-of-Work, SpectreCoin uses Proof-of-Stake.
  • The Monero wallet is mature and stable, while there are still some bugs in SpectreCoin.
  • In Monero, you can send money anonymously, while this does not quite work with SpectreCoin yet, because there are too few "tokens" available for making a ring-signature. We want to make Spectre Tokens (for ring signatures) the default in future versions, which should solve this problem.
  • SpectreCoin has a rich list, while Monero does not. This comes from the fact that SpectreCoin's anonymity is an add-on to normal Bitcoin-like operation at this point, so anonymity (and storing coins as tokens instead of on a public address) is optional in SpectreCoin. We want to make it the default in future versions. Spectre tokens that are stored as "private balance" in the wallet are not visible in the block explorer.
  • SpectreCoin has native Tor integration and all nodes run as hidden services. Monero plans to add an I2P implementation called "Kovri", but it's not the default for Monero yet. Monero can also run via Tor, but only using it as a proxy that uses Tor exit nodes, which comes with some problems (see the Tor integration section).
  • The goals and vision of SpectreCoin and Monero are different.
  • In a Twitter post [1], "fluffpony" (the Monero project leader) noted that using Tor hidden services in SpectreCoin might be susceptible to isolation attacks because .onion address are costless to create. This problem is mitigated in SpectreCoin because the onion addresses used to join the SpectreCoin network have certain requirements, which requires the user to "mine" for a suitable Tor public key first before joining the network. Also, like most Bitcoin-based wallets, SpectreCoin has sophisticated security mechanisms for node selection, so running an isolation attack is not so simple.

PIVX[edit]

  • PIVX uses masternodes which is a type of centralisation, whereas Spectrecoin is properly decentralised using only PoS (proof-of-stake).
  • PIVX uses Zerocoin protocol which is a coin mixing service using zero knowledge proofs to sever the link between the sender and the receiver with 100% anonymity and untraceability. This means that each coin that gets sent using zPIV is now 100% fungible as it has no determinable history attached to them. Spectrecoin uses ring signatures, which are information-theoretically private - it's impossible to know which key in the ring was the source of funds.
  • PIVX does not offer any network privacy - the blockchain is obfuscated through mixing but when you broadcast a transaction, anyone performing surveillance on your network connection (e.g. government, either targeted at you or "dragnet" style surveillance of an entire population) can see the transaction being broadcasted. Spectrecoin uses Tor+OBFS4, integrated into the wallet, to provide complete network privacy - Spectrecoin traffic never leaves the Tor network, as we use hidden services.

Verge[edit]

  • Verge uses PoW, SpectreCoin uses PoS.
  • The Verge wallet supports routing via Tor and I2P, SpectreCoin only uses Tor.
  • The Tor integration in Verge is only using Tor as a proxy (see the Tor integration section), while the SpectreCoin network is running between Tor hidden services.
  • Verge transactions are fully traceable on the blockchain. SpectreCoin has an optional stealth transaction mechanism that allows the user to make anonymous transactions. This mechanism is planned to become the default with version 2.0 of SpectreCoin.
  • In summary, Verge does not offer much privacy that would distinguish it from any other coin like Bitcoin, which can also be used via Tor. In contrast, SpectreCoin is fully dedicated to offer its users actual privacy and anonymity that will protect against dedicated attackers such as governments or private investigators[3].

Official team[edit]

Role Name Activity Bitcointalk Slack Twitter
Founder Heidi Kaulitz Occasionally mandica @spectreproject @SpectreCash
Lead developer jbg Full-time spectre_jbg @jbg -
Community manager Beachguy Part-time Beachguy @beachguy -
Cryptographer Bryce L Full-time - @brycel -
Web developer kepler Part-time - @kepler -

Download[edit]

Windows[edit]

The download links (for 32 and 64 bit) are available from the official website. Please make sure to check the SHA256 sum after downloading the file, to verify that it is not corrupted! There are different ways to check the SHA256 sum:

  • Using a dedicated checksum tool like Quickhash GUI.
  • If you have 7-zip installed (a very neat archive extractor), you can check the SHA256 sum using a context menu entry called "CRC SHA". (We would recommend you to install 7-zip, as it is a very useful utility anyway! ;))
  • If you are command-line savvy, you can use the Windows command "CertUtil -hashfile pathToFileToCheck SHA256".

Please do not download the wallet from other sources than the official ones!

MacOS[edit]

The download link is available from the official website. Please make sure to check the SHA256 sum after downloading the file, to verify that it is not corrupted! To do so, launch a terminal inside the download folder and run the command "shasum -a 256 <filename>.zip". Compare the hash sum with the one listed on the official download page.

Unix[edit]

If you are using a different Unix-based operating system (e.g. Linux), please compile the software on your own system using the instructions found in the Github repository. You can also ask for help in Slack if needed (see "Links" below).

Code names[edit]

Starting with wallet version 1.3, the SpectreCoin community started giving code names to major releases, based on the most common reactions from newbies using the wallet or problems people were experiencing, written in intentionally broken English. Version 1.3 was named "Why my balance is zero?", which refers to a bug in the user interface that was left over from the old ShadowCash code and leads to the displayed balance not being updated after the start of the wallet, making it appear as "0.00".

Technical information[edit]

Data directory[edit]

The data directory contains the application-specific files, such as the downloaded blockchain and your private keys. It is created on the first start of the wallet on your system. You should usually not touch this folder, unless you know what you are doing. The location of the data directory depends on your operating system, as listed below.

Operating System Data directory path
Windows C:\Users\Username\AppData\Roaming\SpectreCoin
Unix-like (Linux, *BSD etc.) ~/.spectrecoin
Mac OS ~/Library/Application Support/SpectreCoin

Depending on your system settings, you might need to display "hidden files" in order to access these directories.

The file "wallet.dat" contains your private keys, make sure to not delete it accidentally. You can make backups of it using the graphical wallet, via the "Backup" menu.

Default ports[edit]

In most cases, the SpectreCoin wallet should be able to connect without any manual configuration.

Purpose Port number
Wallet 37347
RPC 36657
Tor Socks 9089

Media coverage[edit]

September 2017

October 2017

Previous ANN threads[edit]

This is the list of previous announcement threads on Bitcointalk (ANN threads), in ascending order, for the sake of transparency:

Project links[edit]

External links[edit]

Twitter
Slack
Facebook
Spectrecoin BitcoinTalk
Spectrecoin price and market state on Coin360

See also[edit]

References[edit]

  1. Project website
  2. Altcoinwiki
  3. http://icorating.com/project/32/Spectrecoin


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