Note: You can read this on GitHub, Medium or old Reddit to see the 207 links. submitted by
The biggest announcement of the month was the new kind of decentralized exchange proposed
by @jy-p of Company 0. The Community Discussions section considers the stakeholders' response.
dcrd: Peer management and connectivity improvements. Some work for improved sighash algo
. A new optimization
that gives 3-4x faster serving of headers, which is great for SPV. This was another step towards multipeer parallel downloads – check this issue
for a clear overview of progress and planned work for next months (and some engineering delight). As usual, codebase cleanup, improvements to error handling, test infrastructure and test coverage.
Decrediton: work towards watching only wallets, lots of bugfixes and visual design improvements. Preliminary work to integrate SPV has begun.
Politeia is live on testnet! Useful links: announcement
, command line voting example
, example proposal
with some votes, mini-guide
how to compose a proposal.
Trezor: Decred appeared in the firmware update
and on Trezor website
, currently for testnet only. Next steps are mainnet support and integration in wallets. For the progress of Decrediton support you can track this meta issue
dcrdata: Continued work on Insight API support, see this meta issue
for progress overview. It is important for integrations due to its popularity. Ongoing work to add charts. A big database change to improve sorting on the Address page was merged
and bumped version to 3.0. Work to visualize agenda voting continues
Ticket splitting: 11-way ticket split from last month has voted
Ethereum support in atomicswap is progressing
and welcomes more eyeballs.
decred.org: revamped Press page
with dozens of added articles, and a shiny new Roadmap page
: a new Decred dashboard by lte13. Reddit announcement here
Dev activity stats for June: 245 active PRs, 184 master commits, 25,973 added and 13,575 deleted lines spread across 8 repositories. Contributions came from 2 to 10 developers per repository. (chart
Hashrate: growth continues, the month started at 15 and ended at 44 PH/s with some wild 30% swings on the way. The peak was 53.9 PH/s.
F2Pool was the leader varying between 36% and 59% hashrate, followed by coinmine.pl holding between 18% and 29%. In response to concerns about its hashrate share, F2Pool made a statement
that they will consider measures like rising the fees to prevent growing to 51%.
Staking: 30-day average ticket price is 94.7 DCR (+3.4). The price was steadily rising from 90.7 to 95.8 peaking at 98.1. Locked DCR grew from 3.68 to 3.81 million DCR, the highest value was 3.83 million corresponding to 47.87% of supply (+0.7% from previous peak).
Nodes: there are 240 public listening and 115 normal nodes per dcred.eu
. Version distribution: 57% on v1.2.0 (+12%), 25% on v1.1.2 (-13%), 14% on v1.1.0 (-1%). Note: the reported count of non-listening nodes has dropped significantly due to data reset at decred.eu. It will take some time before the crawler collects more data. On top of that, there is no way to exactly count non-listening nodes. To illustrate, an alternative data source, charts.dcr.farm showed
690 reachable nodes on Jul 1.
Extraordinary event: 247361
were two nearly full blocks. Normally blocks are 10-20 KiB, but these blocks were 374 KiB (max is 384 KiB).
from Obelisk: shipping is expected in first half of July and there is non-zero chance to meet hashrate target.
Another Chinese ASIC spotted
on the web: Flying Fish D18 with 340 GH/s at 180 W costing 2,200 CNY (~340 USD). (asicok.com
, also on asicminervalue
dcrASIC team posted
a farewell letter. Despite having an awesome 16 nm chip design, they decided to stop the project citing the saturated mining ecosystem and low profitability for their potential customers.
is a new mining pool spotted
- Huobi Pro added DCBTC and DCETH pairs.
- OKEx gradually rolled out trading DCR to BTC, ETH, USDT and OKB and added a page for Decred (note a bunch of N/As for ICO-related stats).
- Singapore-based DragonEx announced a DCETH pair.
- Netherlands-based Bitvavo recently added EUR to DCR conversion
- OOOBTC announced DCUSDT pair.
- Changenow announced the option to buy DCR with fiat.
Two OTC trading desks are now shown on decred.org exchanges
payment gateway added Decred and posted
Guarda Wallet integrated Decred. Currently only in their web wallet, but more may come in future. Notable feature is "DCR purchase with a bank card". See more details in their post
or ask their representative on Reddit
. Important: do your best to understand the security model before using any wallet software.
- NeverFiat marketplace now accepts Decred. Notably it utilizes GloBee and recently announced Lightning support for Bitcoin.
- Crypto and Tech Gear integrated Decred and has a branded mouse pad for sale, as well as other merch.
- TokenPride: "We are seeking feedback on the general setup of our payment processor. We have tried to make it simple and user friendly. 10% of all purchases made in Decred will be donated to the Decred Development fund - and we will be releasing original Decred designs in the future".
BlueYard Capital announced
investment in Decred and the intent to be long term supporters
and to actively participate in the network's governance. In an overview post
they stressed core values of the project:
There are a few other remarkable characteristics that are a testament to the DNA of the team behind Decred: there was no sale of DCR to investors, no venture funding, and no payment to exchanges to be listed – underscoring that the Decred team and contributors are all about doing the right thing for long term (as manifested in their constitution for the project).
The most encouraging thing we can see is both the quality and quantity of high calibre developers flocking to the project, in addition to a vibrant community attaching their identity to the project.
The company will be hosting an event in Berlin, see Events below.
Arbitrade is now mining
- Meetup in Belo Horizonte, Brazil.
- Meetup in Rio de Janeiro, Brazil. (photo)
- Campus Party in Brasilia, Brazil. @girino, @Rhama and @matheusd talked about Decred. Matheus was interviewed by a TV channel. Check this quick report about the event, click "Show newer" to continue reading. (photos: 1 2 3)
- Blockchain Connect Conference in Silicon Valley, USA. (photo)
- Zcon0 in Montreal, Canada. @jz represented Decred.
- Blockchain Summit in London, UK. This was not a full blown presence with stand but rather investigation of opportunities by @kyle and @Ani. The resulting detailed report is a good example of a document advising to stakeholders whether it is worth spending project funds.
- Meetup in Berlin, Germany on July 18. @jz will give a talk and Q&A about Decred and chat with Ele from @oscoin about incentivizing developers. Hosted by BlueYard Capital.
- O'Reilly Open Source Convention in Portland, USA on July 18-19. People wishing to attend this developer focused event can use Decred25 discount code when registering to save 25%. For any questions join #event_planning and contact @Jesiki, she can also invite you to any gatherings in the area.
: a new website by @mm:
Hey guys! I'd like to share with you my latest adventure: Stakey Club, hosted at stakey.club, is a website dedicated to Decred. I posted a few articles in Brazilian Portuguese and in English. I also translated to Portuguese some posts from the Decred Blog. I hope you like it! (slack) @morphymore
translated Placeholder's Decred Investment Thesis
and Richard Red's write-up on Politeia
to Chinese, while @DZ translated Decred Roadmap 2018 to Italian
, and A New Kind of DEX to Italian
Second iteration of Chinese ratings released
. Compared to the first issue
, Decred dropped from 26 to 29 while Bitcoin fell from 13 to 17. We (the authors) restrain ourselves commenting on this one.
Community stats: Twitter followers 40,209 (+1,091), Reddit subscribers 8,410 (+243), Slack users 5,830 (+172), GitHub 392 stars and 918 forks of dcrd repository.
An update on our communication systems:
- Matrix chat logs are now viewable on the web with the exception of some channels that are not bridged. The new web logs means our chats are now fully public and indexed by search engines.
- Slack had an outage on Jun 27 that disturbed communications for a few hours, discussions continued on Decred's bridged platforms.
Jake Yocom-Piatt did an AMA on CryptoTechnology
, a forum for serious crypto tech discussion. Some topics covered were Decred attack cost and resistance, voting policies, smart contracts, SPV security, DAO and DPoS. A new kind of DEX
was the subject of an extensive discussion in #general
channels as well as Reddit
. New channel #thedex
was created and attracted more than 100 people.
A frequent and fair question is how the DEX would benefit Decred. @lukebp has put it well:
Projects like these help Decred attract talent. Typically, the people that are the best at what they do aren’t driven solely by money. They want to work on interesting projects that they believe in with other talented individuals. Launching a DEX that has no trading fees, no requirement to buy a 3rd party token (including Decred), and that cuts out all middlemen is a clear demonstration of the ethos that Decred was founded on. It helps us get our name out there and attract the type of people that believe in the same mission that we do. (slack)
Another concern that it will slow down other projects was addressed by @davecgh:
The intent is for an external team to take up the mantle and build it, so it won't have any bearing on the current c0 roadmap. The important thing to keep in mind is that the goal of Decred is to have a bunch of independent teams on working on different things. (slack)
about Decred fork resistance started on Twitter and continued in #trading
. Community members continue to discuss the finer points of Decred's hybrid system, bringing new users up to speed and answering their questions. The key takeaway from this chat is that the Decred chain is impossible to advance without votes, and to get around that the forker needs to change the protocol in a way that would make it clearly not Decred.
"Against community governance" article
was discussed on Reddit
"The Downside of Democracy (and What it Means for Blockchain Governance)" was another article
arguing against on-chain governance, discussed here
Reddit recap: mining rig shops discussion
; how centralized
is Politeia; controversial debate
on photos of models that yielded useful discussion on our marketing approach; analysis
of a drop in number of transactions; concerns
regarding project bus factor
, removing central authorities, advertising and full node count – received detailed responses; an argument
by insette for maximizing aggregate tx fees; coordinating
network upgrades; a new "Why Decred?" thread
; a question
about quantum resistance with a detailed answer and a recap of current status of quantum resistant algorithms.
Chats recap: Programmatic Proof-of-Work (ProgPoW) discussion
; possible hashrate
of Blake-256 miners is at least ~30% higher than SHA-256d; how Decred is not vulnerable
to SPV leaf/node attack.
DCR opened the month at ~$93, reached monthly high of $110, gradually dropped to the low of $58 and closed at $67. In BTC terms it was 0.0125 -> 0.0150 -> 0.0098 -> 0.0105. The downturn coincided with a global decline across the whole crypto market.
In the middle of the month Decred was noticed
to be #1 in onchainfx
"% down from ATH" chart and on this
chart by @CoinzTrader. Towards the end of the month it dropped to #3.
Launchpad service. The idea
is to work with coin developers to design a custom, ASIC-friendly PoW algorithm together with a first batch of ASICs and distribute them among the community.
Equihash-based ZenCash was hit
by a double spend attack that led to a loss of $450,000 by the exchange which was targeted.
Almost one year after collecting funds, Tezos announced
A hacker broke into
Syscoin's GitHub account and implanted malware stealing passwords and private keys into Windows binaries. This is a painful reminder for everybody to verify binaries
new asset listing framework for Poloniex. Relevant to recent discussions of exchange listing bribery:
Please note: we will not accept any kind of payment to list an asset.
Bithumb got hacked
with a $30 m loss.
Zcash organized Zcon0, an event in Canada that focused on privacy tech and governance. An interesting insight
from Keynote Panel on governance: "There is no such thing as on-chain governance".
Microsoft acquired GitHub. There was some debate about whether it is a reason to look into alternative solutions like GitLab right now. It is always a good idea to have a local copy of Decred source code
, just in case.
Status update from @sumiflow on correcting DCR supply on various sites:
To begin with, none of the below sites were showing the correct supply or market cap for Decred but we've made some progress. coingecko.com, coinlib.io, cryptocompare.com, livecoinwatch.com, worldcoinindex.com - corrected! cryptoindex.co, onchainfx.com - awaiting fix coinmarketcap.com - refused to fix because devs have coins too? (slack)
About This Issue
This is the third issue of Decred Journal after April
Most information from third parties is relayed directly from source after a minimal sanity check. The authors of Decred Journal have no ability to verify all claims. Please beware of scams and do your own research.
The new public Matrix logs
look promising and we hope to transition from Slack links to Matrix links. In the meantime, the way to read Slack links is explained
in the previous issue.
As usual, any feedback is appreciated: please comment on Reddit
. Contributions are welcome too, anything from initial collection to final review to translations.
Credits (Slack names, alphabetical order): bee and Richard-Red. Special thanks to @Haon for bringing May 2018 issue to medium
A couple weeks back I decided to look into investment opportunities on coins still using the original cryptonight algo. The thought being, all those X3s are mining something other than monero - so what? submitted by
My criteria were, cryptonight algo and traded on polo. The list was short, exactly one coin - Bytecoin. The diff had risen 8x over the past month and the price had not risen proportionally, this made the decision easy. Bought a not- insignificant quantity of them around 60 sats and expected to hold for a while until the expected price increase to move more inline with the diff.
Today, you probably heard what happened on binance with a 32x rise in price. This was "made possible" by no blocks being mined for at least two hours. This jogged my memory on something that happened a couple years back that I'd forgotten all about. This also caused me to reasses my stance on the Z3 and whether it is good or bad for ZCash.
Leading up to the latest bitcoin halving , I was researching SHA256 coins to speculate on. At the time, I figured a lot of the SHA ASICs would move off of bitcoin and into alts after the halving took place. At the time I was trading on both polo and trex, so I wanted coins on both platforms. There were about three coins I settled on as I remember - DGB, Myriad, and CURE. Bought some of each on both exchanges.
A similar scenario unfolded with CURE as happened with BCN today There was a massive, MASSIVE, pump of CURE on Polo but price was mostly unchanged on trex. Sold my CURE on polo and initiated a transfer from trex to polo to sell the remainder. After some time, there were zero confirmations showing on trex. WTF? Searched out a block explorer for CURE and low and behold the chain was not moving. After some time, the pump was over and the chain began moving again.
There was certainly a nefarious actor on the mining side that had stalled the chain. I'm no expert on the technicals of how, but winning shares were being withheld by someone with a significant portion of that network's hashrate. Maybe someone else can chime in with the details on how this type of attack is perpetrated. Incidentally, CURE was delisted from polo a very short time later. Whether this was due to polo calling BS, or being complicit and tipping off somebody prior to the delisting announcement to get one last hoorah, the world will never know.
I also remember some talk around that time of excessive orphans happening on slushpool. It apparently ended up being an unintentional issue wherein one of the larger farms pointed at slush was withholding winning shares. This sounded very similar to what happened with CURE, but with so much more hashrate on the BTC network, others were finding winning shares to keep the chain moving.
So, how is this relevant to ZEC?
I believe the BCN attack was made possible by, and initiated with, Antminer X3s. Somebody has a lot of them and pulled this off.
I believe the CURE attack was perpetrated by a major holder of SHA256 ASICs. The CURE nethash was a drop in the bucket compared to bitcoin so it was probably a simple matter of pulling off BTC for a couple hours, attacking CURE, then returning to BTC (or whatever else they were moving at the time).
Not going to speculate on who waged these attacks, it's irrelevant. The important, common, factor is ASIC miners. I fear that the ZEC network will be vulnerable to this type of attack should action not be taken to resist ASICs. All it would take is two hours to completely trash it's reputation and the effort invested in getting it to where it is today.
Before you call me a GPU shill or ASIC fudder, consider that these things have actually happened and do your own research to refute the points being made. In either case, thank you for taking the time to read what I've written and I look forward to your feedback.
Unlike its BLAKE cousins, however, the SHA family was created out of the need to fix SHA-1 after a 2004 bombshell paper which broke multiple hash functions. In fact, bitcoin’s hash function, SHA ... There are a few conditions that need to be met for an atomic swap to take place, and these may likely present obstacles for the technique to be widely adopted. For instance, to perform an atomic swap, the two cryptocurrencies need to be based on blockchains that share the same hashing algorithm (e.g., SHA-256 for Bitcoin). Also, they also need ... SHA-1 continues to see use in certain circles, such as on source code program Git and other legacy products for sending secure transmissions on computers, according to Gaetan Leurent of France’s National Institute for Research in Digital Science and Technology and Thomas Peyrin of Singapore’s Nanyang Technological University, authors of the paper. Paradoxically, the second-largest among of Bitcoin (0,4294 BTC) was sent to Binance, the exchange that was the victim of the cyber intrusion. Hence, the irony is that the hackers have sent some of the stolen illicit cryptocurrency funds back to Binance to ultimately liquidate them. By virtue of the anonymous nature of cryptocurrencies, it could be extremely difficult to identify the culprits ... Identity thieves now have another tool at their disposal: bitcoin hashing power. That’s the conclusion from a new cryptanalysis paper published earlier this month on SHA-1 (pronounced “shaw”), a once-popular hash function created by the National SHA-1 has its own family members as well: SHA-2 and SHA-3. Unlike its BLAKE cousins, however, the SHA family was created out of the need to fix SHA-1 after a 2004 bombshell paper which broke multiple hash functions. In fact, bitcoin’s hash function, SHA-256, is a member of the same family (created as an alternative to SHA-1).
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