This release adds further support for Sapling in the zcashd wallet RPC and mitigates an issue identified by an external auditor. Information on the Sapling network upgrade (which activated on Oct 28th 2018) can be found below:
Previously when calling z_getnewaddress a Sprout shielded address would be returned by default. With this release, a Sapling shielded address will be returned by default.
Transactions expiring soon will not be propagated
To address auditor issue ZEC-013 which identified a potential denial-of-service vector related to expiry height, nodes will no longer propagate transactions which are expiring soon, defined as within the next 3 blocks. For example, if the current block height is 99, and the next block to be mined is 100, a transaction with an expiry height of 100, 101, 102 will be considered "expiring soon" and will be rejected by the mempool. A transaction with an expiry height of 103 will be accepted. This does not impact transactions which have disabled expiry height (by setting to 0).
Summary of the Changes Included in this Release
Add Sapling support to RPC z_mergetoaddress (#3619)Mitigate ZEC-013 transaction expiry height related DoS vector (#3689)Return Sapling addresses by default when calling RPC z_getnewaddress(#3680)Add Sapling spend and output description benchmarks to RPC zcbenchmark (#3611)Fix bug with Sapling chain value tracking (#3684)Fix language encoding bug with parameter paths on Windows (#3633)Backport from upstream the relaying of blocks when pruning (#2815)Don't ban peers when loading pre-Sapling blocks during syncing (#3670)Fix bug with contents of default memo in Sapling (#3605)Update tests for Sapling (#3585, #3588)
Coinvest Announces a New Premium Hardware Wallet for Digital Assets Including a Limited Founder’s Edition
Coinvest Vault complements the Coinvest decentralized investment
trading platform and offers a single integrated solution to securely
invest and store digital assets.
TX — Coinvest, a technology company that develops solutions to empower
the world to execute financial services using blockchain technology, is
announcing the availability of their new premium cryptocurrency hardware
wallet, the Coinvest Vault. The Coinvest Vault complements all Coinvest
products to offer consumers a secure end-to-end solution to invest in
The Coinvest hardware wallet offers state-of-the art design and architecture featuring:
A cryptographic coprocessor with secure hardware-based key storage and asymmetric and symmetric cipher supportLinux operating system using a SAMA5D2 pre-PCI certified processor3.5” LED backlit full touchscreen display with 320x480 resolutionFIDO/U2F support to use COIN wallet as a security token for two-factor authenticationA single USB-C connection with support for authenticating desktop and mobile devicesA dedicated screen and authentication chip to protect consumers even if the host computer is infected with a virus or malwareSupport for multiple token protocols including Bitcoin, Bitcoin Cash, Ethereum, ERC20 tokens, and more
current solutions on the market that leverage pure MCU-based solutions
such as the Ledger and Trezor, Coinvest has chosen a pre-PCI certified
processor to mitigate the security risks that competing platforms
possess, while maximizing graphics capabilities for an experience that
is second to-none. The wallet also has a single USB-C connection with
support for authenticating desktop and mobile devices. With premium
materials and build quality, the Coinvest wallet provides consumers an
all-in-one portable personal security solution in a strikingly
beautiful, but small credit-card sized design.
Vault integrates with all Coinvest products and offers an end-to-end
solution to securely invest and store digital assets. In addition to the
storage of popular cryptocurrency protocols such as Bitcoin and
Ethereum ERC20 tokens, the wallet will also have FIDO/U2F support for
use as a security token for two-factor authentication. The Vault
includes the ECDSA standard to easily migrate Ethereum wallets such as
MyEtherWallet and MyCrypto to Coinvest, using your existing private
the 2018 holiday season, Coinvest is offering a limited founder’s
edition with exclusive packaging and a special gold finish. Unlike the
primary black finish, the founder’s edition is limited to only
ten-thousand units and will never be manufactured again. The Coinvest
Vault will retail for $249 and begin shipping in Q1 of 2019. Both models
will be available for purchase at a discount using the Coinvest COIN
token or at full price using fiat currencies. All purchases also include
a redeemable voucher for $10 in free COIN. For more information, visit
WeTrust - Donate in Crypto? 77 Percent Say Yes.How generous are crypto holders? According to a new survey, very.
results of a Pollfish survey of 1000 crypto holders found that 77
percent are interested in making a donation in cryptocurrency.
There were three results from the survey that really stood out to us.
77% Want to Donate in Cryptocurrency
most striking result of the Pollfish survey was that a vast majority of
crypto holders want to donate cryptocurrency — 77 percent. That’s more
than three-quarters of those surveyed.
of the reasons we started WeTrust Spring is because we thought there
were crypto holders out there who would want to donate cryptocurrency.
We asked our friends and other crypto companies if they agreed with us,
but this unbiased survey seems to prove it.
24% Are More Likely to Donate in Crypto
survey found that 24 percent of people would be more likely to donate
to a charity if they were able to do so in cryptocurrency.
is the reason we started WeTrust Spring. There are crypto holders out
there who are not only interested in donating their cryptocurrency, but
they’re more likely to donate at all if they can do so in cryptocurrency.
charities aren’t accepting cryptocurrency donations, they’re missing
out on a population of people who want to donate, but can’t donate how
they want to. WeTrust Spring makes it easy for nonprofits to begin
accepting cryptocurrency donations and taking advantage of those donors
who only want to donate in cryptocurrency.
Donate to Charity or Buy a CryptoKitty?
is a new and changing field. As new technology is developed, the market
is shifting to understand what cryptocurrency can do and what’s
important to those participating. One such thing to come out of the new
technology is a CryptoKitty. A CryptoKitty is part of a blockchain-based
game, where players can purchase, collect, breed, and sell various
virtual cats. Each cat has a unique signature, making some inherently
more valuable than others.
to the Pollfish survey showed a stronger interest in donating
cryptocurrency to charity than purchasing a CryptoKitty. 79 percent are
interested in donating to charity while only 71 percent are interested
in buying a CryptoKitty.
55 percent of respondents believe that crypto holders are more generous than the general population.90.5 percent of those surveyed reported that they had made a donation to a charitable cause in the past.63 percent of respondents have made a charitable donation in the last 12 months.62
percent of respondents believe that charities and nonprofits should
embrace cryptocurrency as a new source of funding (in comparison to
those who said charities are doing fine without cryptocurrency
donations.)63 percent of those who responded to the survey said they would like to donate more money to charities
you’re not yet familiar with our new platform, WeTrust Spring is a
platform that allows nonprofits to raise funds in cryptocurrency. On
Giving Tuesday, we did a donation-matching campaign for anyone who
donated Ethereum to one of our nonprofit partners.
Pollfish poll was sponsored by WeTrust. Pollfish applies machine
learning and programmatic delivery to survey its network of over 550
million people. Their network can be specifically targeted across their
140,000 vetted partner apps, giving the results unprecedented accuracy.
We are pleased to announce that Anesthesiologist and Health Care Tech Visionary Dr. Scott T. Roethle is now part of the CareParrot advisory team. Dr. Roethle will play a crucial role in CareParrot’s campaign to revolutionize the overall health care experience all over the world. Dr. Roethle will provide medical advise, project support and be a cornerstone of our initiatives moving forward.
We are very excited to announce that Buzzex Exchange will soon experience its first trade!
A select group of users will be able to test the platform and assist in improving it.
Read the details here.
Wish You Luck!
The Buzzex Team
It has been just over a year since the Bitcoin Gold project launched.
Since then, we’ve been striving to carefully shepherd our young project
towards being a fair, transparent, and above all, decentralized
cryptocurrency. Today we have some news about changes in our leadership
which support those goals.
We want to share with the community that Jack Liao, who first
inspired the Bitcoin Gold Project, is stepping down from the Board. His
future involvement will be limited to an Advisory capacity. Jack Liao is
a colorful individual and a force of personality who brought vision,
energy, and an extensive network in the crypto community to the project.
He was the first founder of the Bitcoin Gold project and helped build
the team of six co-founders.
Jack inspired us and encouraged us to do something ambitious. For that, we will be eternally grateful.
At this time, Jack wants to focus his time in other endeavors,
encouraging competition and diversity in the crypto space, and his
continuing as CEO of his company, LightningASIC. We wish him good luck
in all his future endeavors.
We also want to share that fellow member of the Board and Lead Developer, H4x3rotab, has decided to publicly share his identity. While we will all still know him as H4, he is no longer anonymous. Hang Yin studied Computer Science at Fudan University and was, until recently, a Google software engineer. He has given up his role at Google to focus all his time into crypto-related work, especially the BTG project.
Our team has grown a great deal since our start in 2017, bringing in
fresh energy and ideas. We’re excited to see fresh attention and new
interest from the crypto developer community – we’ll always welcome new
contributors. We’re looking forward to sharing the next year of journey
with our growing Community!
Gratefully, most sincerely, and with best wishes,
The Board of the Bitcoin Gold Organization