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We’re thrilled to welcome Breanne Madigan to the Blockchain team as our Head of Institutional Sales and Strategy. Breanne most recently served as the Head of Institutional Wealth Services at Goldman Sachs, where she played an integral role in a division whose total assets under management reached a record $1.49 trillion in 2017.

Breanne has a remarkable history of success in leadership roles, having served as the Chief Operating Officer for the G10 Global Foreign Exchange Business, as well as Goldman Sachs’ EMEA Emerging Markets Business. In this capacity, she was responsible for a business of more than 300 individuals across a wide range of teams, as well as $2 billion in annual net revenue. She was also entrusted with managing 30 of the leading investment bank’s highest priority hedge fund clients. Her extensive background in investment strategy makes her an invaluable asset to the Blockchain team.

“Breanne has a proven track record of adding value to her teams and her clients, and as Blockchain continues to grow its institutional presence, I can think of no one better to help scale our business,” said Peter Smith, CEO and Co-Founder of Blockchain.

We experienced a record year of growth in 2017 and are planning to triple our headcount in 2018. Breanne’s hire marks the third executive hire we've made in as many months -- she joins Marco Santori, who was recently named President and Chief Legal Officer, and Peter Wilson, who is Blockchain’s new Vice President of Engineering. Alongside the entirety of the Blockchain team, Breanne will help the company better serve its growing and diverse customer base, scale operations, and support product development.

“It is an honor to join Blockchain, the leading provider for digital asset software,” said Breanne Madigan. “I am thrilled to have the opportunity to create a more modern and inclusive financial system for businesses and individuals around the world, and look forward to leveraging what I have learned from the traditional financial industry in this exciting new venture.”

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Goodbye winter; hello spring! As we shift from the cold, snowy season to warmer, vibrant days, it’s time for our first quarterly product update post of 2018. We’ve got a fresh collection of updates, so let’s jump right in!

What’s new in Q1 2018?
  • US users can now sell bitcoin
  • Bitcoin Cash addresses get a new look
  • Importing ether from MyEtherWallet and Mist is live
  • Bitcoin Cash is fully supported on Android
  • iOS users can now exchange ETH BTC
Selling bitcoin available in the US


Thanks to our partnership with SFOX, users in 22 states can now conveniently sell bitcoin within their wallet without compromising security or control. Stay tuned as we expand on this US integration to include buying bitcoin, as well as buying and selling other assets like ether and Bitcoin Cash.

Bitcoin Cash address format change

Prior to this update, Bitcoin Cash and bitcoin addresses shared the same format. This inevitably led to confusion for users, especially those who transacted with both currencies. Thankfully, Bitcoin Cash developers released an updated address format to give Bitcoin Cash addresses a new look without having any effect on underlying public and private keys. Going forward, we encourage users to use the new address format when sending and receiving.

Importing existing ether from Mist and MyEtherWallet

Building upon our ether functionality, users can now import existing ether from Mist and MyEtherWallet. When logged in to your Blockchain wallet, visit Settings > General > Import Funds from MyEtherWallet. All you’ll need is your Mist or MyEtherWallet passphrase and Keystore file. ERC 20 tokens are not currently supported, but can still be accessed via other services.

Exchange BTC <-> ETH on iOS

A second key update on mobile for Q1, iOS users can now easily exchange between BTC and ETH. Previously released to web and Android users, iOS users are now able to access the same user-friendly exchange experience.

Bitcoin Cash joins our Android family of currencies

Bitcoin Cash has joined our lineup of digital currencies available to Android users. From the central dashboard, users can easily toggle between currencies to seamlessly transact and safely manage balances, all while keeping an eye on market prices.

If you’d like to help us build the future of finance, check out our open positions here. All our earlier product updates can be found here.

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Our user operations team has recently noticed a trend on social media in which scammers are using watch-only address balances to deceive users about the true balance of a wallet. We would like to discuss how you can avoid such scams and clear the air on watch-only addresses.

Why watch-only spending is impossible without a private key

Imported watch-only address balances are currently included in the total wallet balance, but a user must already have the private key to spend that balance.

The following scams attempt to deceive users by suggesting that watch-only address balances are proof that the funds shown are available to spend. To be clear, this is not the case.

Scam #1: Blockchain wallets for sale

In one version of this scam, scammers will post in groups and pages on social media about selling Blockchain wallets holding a considerable balance. Screenshots of the wallet dashboard displaying the balance are often shared as proof of the available balances. However, this balance is associated with a watch-only address that the scammer has imported into the wallet. After purchasing the wallet, the buyer logs in only to discover they’re unable to spend those funds without a private key.

Scam #2: Earn mining profits

A second version of this scam claims a wallet has been specially configured for mining or investment purposes. To activate the mining process, the user must provide their email address and are told to make a deposit into a wallet provided by the scammer. The scammer sends funds to an imported watch-only address, which makes it seem as though deposited funds are multiplying. Again, because these funds cannot be spent without the private key, this balance is still useless to the user.

Summing things up

Importing a watch-only address allows a user to conveniently monitor that address’ transaction activity and balance. It will not allow the user to spend any bitcoin associated with that address or provide access to the private key.

How to avoid a watch-only scam
  • Know that there are no special wallets configured to automatically generate profits
  • Avoid transacting with anyone making a grandiose or “too good to be true” offer
  • Always create your own wallet -- NEVER use any wallet someone else created or had access to (even if you changed the wallet’s password)
  • To safely receive, always generate a new address by clicking on Request and never via a watch-only address
Why use a watch-only address if I can't spend from it?

This is not to say that a watch-only address serves no purpose. Any bitcoin address can be imported as watch-only so a user can keep track of and monitor transaction activity right from the wallet dashboard. This makes for a convenient alternative to individually monitoring each address of interest in a block explorer. For some users, these are addresses they hold the private keys to in a separate wallet, or they may also be addresses they simply have an interest in monitoring. Imported balances that are identified as watch-only can be viewed by going to Settings -> Addresses and scrolling down to Imported Addresses.

That said, watch-only scams are increasing in popularity on social media, and we encourage you to exercise caution when engaging with offers that seem too good to be true.

Do you have any questions about watch-only addresses that we didn’t clear up in this post? Let us know by reaching out to @AskBlockchain or sharing your feedback here.

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Our user operations team has recently noticed a trend on social media in which scammers are using watch-only address balances to deceive users about the true balance of a wallet. We would like to discuss how you can avoid such scams and clear the air on watch-only addresses.

Why watch-only spending is impossible without a private key

Imported watch-only address balances are currently included in the total wallet balance, but a user must already have the private key to spend that balance.

The following scams attempt to deceive users by suggesting that watch-only address balances are proof that the funds shown are available to spend. To be clear, this is not the case.

Scam #1: Blockchain wallets for sale

In one version of this scam, scammers will post in groups and pages on social media about selling Blockchain wallets holding a considerable balance. Screenshots of the wallet dashboard displaying the balance are often shared as proof of the available balances. However, this balance is associated with a watch-only address that the scammer has imported into the wallet. After purchasing the wallet, the buyer logs in only to discover they’re unable to spend those funds without a private key.

Scam #2: Earn mining profits

A second version of this scam claims a wallet has been specially configured for mining or investment purposes. To activate the mining process, the user must provide their email address and are told to make a deposit into a wallet provided by the scammer. The scammer sends funds to an imported watch-only address, which makes it seem as though deposited funds are multiplying. Again, because these funds cannot be spent without the private key, this balance is still useless to the user.

Summing things up

Importing a watch-only address allows a user to conveniently monitor that address’ transaction activity and balance. It will not allow the user to spend any bitcoin associated with that address or provide access to the private key.

How to avoid a watch-only scam
  • Know that there are no special wallets configured to automatically generate profits
  • Avoid transacting with anyone making a grandiose or “too good to be true” offer
  • Always create your own wallet -- NEVER use any wallet someone else created or had access to (even if you changed the wallet’s password)
  • To safely receive, always generate a new address by clicking on Request and never via a watch-only address
Why use a watch-only address if I can't spend from it?

This is not to say that a watch-only address serves no purpose. Any bitcoin address can be imported as watch-only so a user can keep track of and monitor transaction activity right from the wallet dashboard. This makes for a convenient alternative to individually monitoring each address of interest in a block explorer. For some users, these are addresses they hold the private keys to in a separate wallet, or they may also be addresses they simply have an interest in monitoring. Imported balances that are identified as watch-only can be viewed by going to Settings -> Addresses and scrolling down to Imported Addresses.

That said, watch-only scams are increasing in popularity on social media, and we encourage you to exercise caution when engaging with offers that seem too good to be true.

Do you have any questions about watch-only addresses that we didn’t clear up in this post? Let us know by reaching out to @AskBlockchain or sharing your feedback here.

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In our mission to create an open, fair, and accessible financial future, we are committed to supporting a vast array of sustainability, humanitarian, and environmental initiatives. To that end, we recently partnered with volunteers from the UN Refugee Agency (UNHCR), the UN Development Programme (UNDP), and the World Economic Forum (WEF) to explore how block chain technology can do just that. Today, we’re thrilled to share the culmination of that partnership with you in the form of a white paper titled, The Future is Decentralised.

This white paper not only explains how block chain technology works, but also how it is already being used to pursue conventional ends. We’re excited to share how this technology has brought new levels of efficiency and effectiveness to the fields of development aid, supply chain management, renewable energy, economic growth, and several others.

I’m also honored to share that I’ve been asked to help establish the Blockchain Commission for Sustainable Development. As a Founding Commissioner, I will have the opportunity to help develop a multi-sectoral framework to support the United Nations system — along with Member States, Intergovernmental Organizations, and the private sector and civil society — in utilizing block chain-based technologies to develop local, national, and global solutions for pressing issues of our day.

Over the coming months, Blockchain will continue to work with international partners to survey the opportunity for both national and international institutions to defend the rights of those they represent, and to accelerate progress towards meeting the Sustainable Development Goals of the UN and 193 Member States. Together, Blockchain and the Blockchain Commission for Sustainable Development will leverage block chain technology to develop radically creative and decentralized solutions for the conservation of natural resources, financial inclusion and security, public health and welfare, civic trust, and protection of the integrity of democratic systems — among others — to improve lives around the world.

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Calling all developers: have you been curious about block chain technology and its many applications? Join us on Saturday, March 24th for Code Block, a full day of educational programming that will bring together the brightest engineering talent across a wide range of industries.

Held in the heart of London, Blockchain’s one-day developer conference will give you an inside scoop on block chain technology through hands-on sessions and presentations led by experts across the digital currency space. Following a packed day of knowledge sharing, you’ll have the opportunity to chat with Blockchain developers and industry leaders.

Whether you’re a developer in banking, a tech startup, or already in the crypto space, Code Block can catapult you into the future of the financial system.

Code Block will be held at Campus London, a Google Space and is a free event. Demand is high and space is limited, so apply now by submitting your LinkedIn and Github here.

We can’t wait to see you!

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Today I am thrilled to welcome Peter Wilson to Blockchain as our first VP of Engineering. His record of leadership and innovation at some of the fastest growing companies in the world will help us build a more transparent, secure, and open financial future.

Over the course of a 20-year career as an engineering executive at Google, Facebook, and Microsoft, Peter has helped build the technology that powers much of our lives today.He led the development of key advertising, talk, video, and maps products at Google. While at Facebook, he oversaw the development of advertising tools and APIs. If you’ve used Microsoft tools, it’s likely you’ve seen Peter’s work — his teams worked on the company’s developer tools and operating systems.

Peter’s talent as an engineer is matched only by his ability to build and manage great teams. As Blockchain prepares for a new year, acquiring and leading world-class talent will be a core focus. Peter is an expert in scaling organizations and will be instrumental to these efforts. He served as the Site Director for Google’s Kirkland engineering center as well as Facebook’s Seattle office, after the startup he co-founded was acquired by Facebook while under his leadership. Engineering organizations have burgeoned under his leadership from where we are today to hundreds of engineers multiple times across his career. I’m looking forward to seeing him do the same here.

“I’m thrilled to welcome Peter to Blockchain to lead our engineering efforts. His experience and insight after decades at top software companies is invaluable as we scale our team and deliver new products and services to our users,” said Peter Smith, CEO and Co-Founder of Blockchain.

“Throughout my career I have been fortunate to build products and teams that level the playing field and empower users through software,” said Peter Wilson. “I’m beyond excited to join Blockchain and build an engineering organization in pursuit of a better financial future for all.”

I am honored to have Peter join us on our journey of making the world a better place, and delighted to share the news with users who make what we do everyday possible.

If you’re interested in joining Blockchain and contributing to our mission, visit https://www.blockchain.com/careers.

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Today we’re thrilled to announce that Marco Santori is joining Blockchain as our President & Chief Legal Officer. Previously, Marco was a partner at the law firm Cooley LLP, where he led the global financial technology practice and built the most acclaimed digital assets-focused legal practice in the industry.

Marco has an impressive legal background and has a roster of world-class clients. He has worked with investors, companies of all sizes, regulators and public institutions to build our industry and shape the future of finance. Notably, Marco is an advisor to the International Monetary Fund, and the Blockchain Ambassador for the State of Delaware. He is most recently known as an author of the “Simple Agreement for Future Tokens” (SAFT) Project Whitepaper, which has set the standard for mitigating investor and consumer risks associated with Initial Coin Offerings (ICOs).

“Marco has a breadth and depth of knowledge that is unmatched and I couldn’t think of a better person to focus entirely on our expansion efforts and strategy as we continue to serve our millions of users globally,” said Peter Smith, CEO and Co-Founder of Blockchain.  

Blockchain experienced a record year of growth in 2017 and we’re focused on scaling our company and leadership team to support the global business we run today.  As President and Chief Legal Officer, Marco will focus on building our compliance, legal and corporate development teams as well as leading the charge to bring new products to market alongside the rest of our team.  

“I’m honored and thrilled to join Blockchain, the leading provider for digital asset software,” said Marco Santori. “It’s a compelling opportunity to contribute to a company that is not only achieving unparalleled business success, but also delivering on a powerful mission to create an inclusive financial system from which everyone can benefit.”

Marco will assume the role of President from Co-Founder Nicolas Cary. As Vice Chairman for the company, Nic will continue to be instrumental in day-to-day operations as well as Blockchain’s public affairs and external relations. “Marco will be a great asset for Blockchain and I look forward to dedicating more of my time on building our brand in key regions like India, hiring the brightest talent, and educating more people on the benefits of digital assets,” said Nic Cary, Co-Founder, Board Member, and Vice Chairman of Blockchain.

**More on Marco: **

Marco joins Blockchain from Cooley LLP where he was the head of the firm’s Financial Technology practice group. Marco Santori is an authority in the law of blockchain technology, and has been called “The Dean of Digital Currency Lawyers” by American Banker. He is the author of the transformative Simple Agreements for Future Tokens (SAFT) Project Whitepaper, a standard-setting self-regulatory effort that mitigates investor and consumer risks associated with Initial Coin Offerings (ICOs). Additionally, he is the Legal Ambassador for the Delaware Blockchain initiative and an advisor to the International Monetary Fund. He has frequented stages around the world to share his insights, including the Cato Institute’s Cryptocurrency Conference, the American Bar Association Summit, North American Bitcoin Conference, and the Consensus Conference and has been profiled by the Wall Street Journal, Forbes, Bloomberg, Reuters among others.

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Until earlier this month, bitcoin and Bitcoin Cash addresses used the same format, making it difficult to ensure you were transacting using the correct currency’s address. In order to simplify the process for transacting with both bitcoin and Bitcoin Cash for our users, Blockchain wallets are now using an a new format (CashAddr) for Bitcoin Cash addresses.

Q: Why do my Bitcoin Cash addresses look different?

A: Bitcoin Cash developers have proposed a new format for addresses to help differentiate between bitcoin and Bitcoin Cash addresses, called CashAddr. This updated format only changes how your Bitcoin Cash addresses are displayed, not the underlying private and public keys.

Q: Why has Blockchain implemented this change for users’ wallets?

A: We want to continue improving the user experience for both bitcoin and Bitcoin Cash within users’ wallets. Ultimately, having a different address format for each will help you distinguish which currency you’re transacting with, allowing you to use BTC and BCH more easily.

Q: What is the difference between the address formats?

A: Bitcoin Cash addresses now look like this: qp3wjpa3tjlj042z2wv7hahsldgwhwy0rq9sywjpyy. They can also have a prefix (bitcoincash:qp3wjpa3tjlj042z2wv7hahsldgwhwy0rq9sywjpyy). Each Bitcoin Cash address also has a “legacy address”, which is it’s corresponding bitcoin address. You can find the legacy address for each BCH address on Blockchair. Take a look here to see an example of the difference between legacy and CashAddr addresses.

Q: What do I need to do?

A: Nothing, we’re taking care of it for you! Your wallet will now only show Bitcoin Cash addresses in this new format. The only thing we encourage you to do is to start sending and receiving using the updated address type.

Q: Can I still send to the original ‘legacy’ address?

A: Technically yes, but it would benefit both you and the community to begin using the new version. Don’t worry, if you have a legacy address that is currently being used, it will continue to work. If you continue transacting with your legacy addresses, they will be displayed in your transaction feed as the BCH CashAddr address equivalent.

Q: Is this a protocol change, soft-fork, or hard-fork?

A: Nope.

Q: Where can I dive into more technical details?

A: You can find more details on this update here.

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Earlier today, we announced a partnership with SFOX that lays the groundwork for our users in the US to seamlessly buy and sell digital assets with greater reliability and without compromising user security or control.

At Blockchain, we are on a mission to build an open, accessible, and fair financial future, one piece of software at a time. This announcement brings us one step closer to realizing that mission by making the exchange of digital assets fast, easy, and inexpensive for millions of users across the US.

Starting today, users in 22 states will have the option to sell bitcoin quickly and easily.

And this is just the beginning; in the coming weeks, users will also be able to buy bitcoin, and buy and sell other assets like ether and Bitcoin Cash. As always, we’ll keep you posted while we roll out these features. In the meantime, we welcome your thoughts on how we can continue to improve.

Not in the US? Users in Europe and India are already able to buy and sell bitcoin. As we continue to expand to new countries, we’ll keep you in the loop here and onTwitter.

Don’t have a Blockchain wallet?Sign up to get started with bitcoin and other digital currencies today!

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