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  • newHow to custody your own crypto with Blockchain.com
    How to self-custody your crypto using Blockchain.comNot your keys, not your crypto: the lesson we keep on learning.No phrase in crypto has proven more true over the past few months as: “not your keys, not your crypto.”Given the events, there’s…
    - 20 hours ago 29 Nov 22, 3:06pm -
  • Crypto in The Community
    Communities shape how people interact, and the crypto community is no exception.During “all time highs” sentiment rises. When we dip, the collective sentiment falls.What remains is the underlying technology.Over the past year, we’ve spoken with…
    - 2 days ago 28 Nov 22, 2:23pm -
  • 6 Crypto Use Cases We Love
    Cryptocurrencies have many alternative use cases that don’t always get as much coverage in the press, so we’re going over six of our favorite use cases for crypto.1. CharityAs the popularity of crypto has grown, so has the desire to donate it.W…
    - 6 days ago 24 Nov 22, 11:25am -
  • Ethereum, Explained
    Household names such as Samsung, Amazon, and Microsoft are now using Ethereum, but what exactly makes Ethereum so attractive to investors, entrepreneurs, artists and corporations?As the second biggest cryptocurrency after Bitcoin, Ethereum is known a…
    - 7 days ago 23 Nov 22, 8:06am -
  • Our Mission, Our “Why”
    The recent turbulence across the crypto space has impacted not just the industry at large, but conventional financial markets, too.It’s important to note however that crypto has always moved in cycles. And as we prepare for the next peak, we’ve…
    - 9 days ago 21 Nov 22, 1:23pm -
  • Keeping your funds safe for over a decade
    For more than a decade, we’ve managed funds on behalf of over 38 million verified customers across the globe, building infrastructure, managing risk, and building non-custodial wallets that empower people to custody their own crypto.Here are some…
    - 11 days ago 19 Nov 22, 12:45am -
  • Your Keys, Your Crypto
    A message from the Co-Founder and CEO of Blockchain.comBy now you’ve probably received several emails from crypto exchanges explaining why you can trust them with your crypto. Some of them deserve your trust. Some clearly do not.We’ve been a tru…
    - 12 days ago 18 Nov 22, 5:31am -
  • “Not your keys, not your crypto” explained
    If you’ve been following the recent fallout of crypto exchange FTX, you’ve likely heard the phrase, “not your keys, not your crypto.”But what exactly does this mean?To help unpack the term, we explored the benefits of self-custody using you…
    - 14 days ago 16 Nov 22, 5:58pm -
  • Welcoming Former Banker and U.S. Regulator Joseph Otting to the Blockchain.com Board of Directors
    With over a decade of innovation within crypto, Blockchain.com has earned its longevity by being one of the most stable players in the space, largely thanks to our conservative and experienced leaders. Today, I’m pleased to build on that reputation…
    - 14 days ago 16 Nov 22, 1:29pm -
  • Product Highlights: October 2022
    In October, we introduced new ways for you to use and earn crypto.Read on to learn more…Spend and earn crypto with the Blockchain.com VisaŽ CardSign up for early access to the Blockchain.com Visa Card.Spend your crypto or cash without fees any…
    - 16 days ago 14 Nov 22, 4:41pm -

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Coinbase Blog

  • In response to the Wall Street Journal
    Tl:dr Earlier today, the Wall Street Journal published an article highlighting client-driven activities, which they seem to confuse with proprietary trading.Unlike many of our competitors, Coinbase does not operate a proprietary trading business or a…
    - 69 days ago 22 Sep 22, 10:56am -
  • Coinbase gains regulatory approval in the Netherlands
    Tl;Dr: Coinbase becomes the first major global crypto exchange to successfully register with the Dutch Central Bank (De Nederlandsche Bank — DNB), allowing us to offer our crypto products and services to the Dutch market.By Nana Murugesan, Vic…
    - 69 days ago 22 Sep 22, 10:23am -
  • Coinbase Cloud launches platform for web3 developers
    Starting today, developers have free and instant blockchain API access with Node by Coinbase CloudTL;DR: Coinbase Cloud enables web3 developers to build their web3 applications with instant and reliable read/write blockchain access using Node.By Lu…
    - 70 days ago 21 Sep 22, 1:00pm -
  • What Web3 Identity Needs
    TL;DR: To create an open financial system for the world, we need to ensure web3 is usable by everyone. This means building an identity experience that’s intuitive, forgiving, and trustworthy, combining the best of web2 and web3. Our first step is t…
    - 71 days ago 20 Sep 22, 6:00pm -
  • Coinbase Exchange fee updates — September 2022
    Coinbase Exchange fee updates — September 2022On Tuesday, September 20, 2022 at approximately 5pm ET, Coinbase Exchange will implement a new fee structure to account for changes in global crypto trading volumes and asset prices, lowering the mo…
    - 72 days ago 19 Sep 22, 8:35pm -
  • Celer Bridge incident analysis
    Tl;dr: In this piece we share critical lessons about the nature of the Celer Bridge compromise, attacker on-chain and off-chain techniques and tactics during the incident, as well as security tips for similar projects and users. Building a better cry…
    - 82 days ago 9 Sep 22, 7:31pm -
  • Defending Privacy in Crypto
    Tl;dr: Coinbase is funding a lawsuit brought by six people challenging the U.S. Treasury Department’s sanctions of the Tornado Cash smart contracts and asking the Court to remove them from the U.S. sanctions list. The sanctions exceed Treasury’s…
    - 83 days ago 8 Sep 22, 2:27pm -
  • Sanctions Should Target Bad Actors. Not Technology.
    Tl;dr: Coinbase is funding a lawsuit brought by six people challenging the US Treasury Department’s sanctions of the Tornado Cash smart contracts and asking the Court to remove them from the U.S. sanctions list. The lawsuit explains that OFAC excee…
    - 83 days ago 8 Sep 22, 1:55pm -
  • How Coinbase Protects Users From Risky Assets
    By Dan Kim — Vice President, Business Development — Ecosystem and ListingsTl;dr: Coinbase reviews thousands of crypto tokens; around 90% never get considered for listing as they do not meet our strict requirements for protection against…
    - 85 days ago 6 Sep 22, 6:40pm -
  • Real-time reconciliation with Overseer
    Tl;dr: A common challenge with distributed systems is how to ensure that state remains synchronized across systems. At Coinbase, this is an important problem for us as many transactions flow through our microservices every day and we need to ensure t…
    - 85 days ago 6 Sep 22, 2:09pm -

Bitcoin Examiner

Bitcoin Stack Exchange

  • newNeed a detailed step-by-step P2PK signature validation example
    In the process of validating transactions by hand with a new library in elixir. I am starting with f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16, which is one of the first P2PK transactions ever made.I am struggling to manually va…
    - 19 hours ago 29 Nov 22, 3:57pm -
  • newbitcoin-core building disabled binaries
    good day,I have just tried upgrading to core 24. As I am looking for a purely headless bitcoin-core, my process was the followingrm -rf bitcoingit clone https://github.com/bitcoin/bitcoin.gitcd bitcoin./autogen.sh/configure --without--gui --dis…
    - 22 hours ago 29 Nov 22, 12:49pm -
  • newDoes bitcoin core scantxoutset include mempool transactions?
    In my local experiments so far, I don't think that scantxoutset includes mempool information. What options do I have if I want to scan the current utxo set(with mempool updates) for a particular descriptor?
    - 23 hours ago 29 Nov 22, 11:37am -
  • Muun Wallet - All Funds Stored On-Chain?
    I've read so far all official Muun articles about the submarine swaps and emergency kits, but one thing still has me confused.Let's say I receive $500 worth of Bitcoin on-chain to my Muun wallet. These funds are stored on-chain and stay there for no…
    - 1 day ago 29 Nov 22, 7:45am -
  • Why is connecting bitcoin exclusively over Tor considered bad practice?
    I've heard that a bitcoin node with only Tor connections is "trivial" to eclipse attack and that such nodes should maintain at least one (or more?) clearnet connections in addition. What is it about Tor that makes eclipse attacks trivial?
    - 3 days ago 27 Nov 22, 12:29pm -
  • Can I create a P2PK tx?
    Is it still possible to send to a pub key directly?How would I construct such a tx in raw hex, and would the mempool accept it?Thanks
    - 4 days ago 26 Nov 22, 2:24pm -
  • listchannels returns no results from CLN
    CLN 0.12.1My node has been running for hours now. But it doesn't seem to be aware of the network. This is what I get when I try to run listchannels.$ lightning-cli listchannels{ "channels": []}What would cause this? And what can I do about i…
    - 7 days ago 23 Nov 22, 10:17pm -
  • Connection to my full node via Python script suddenly fails
    I run a mynode full node on a raspi for quite some time now and was playing around with Python scripts to connect and send txs. This worked fine until lately. Turns out the connection establish process fails because my full node refuses the connectio…
    - 7 days ago 23 Nov 22, 4:35pm -
  • Can you know the final destination of a BOLT12 offer?
    It is said that a BOLT12 offer does hide the final destination, and therefore protects privacy of receiver.However, I just generated an offer, decoded it, and in the value node_id, it had my node's public key without the first byte prefix, which is…
    - 8 days ago 22 Nov 22, 4:40pm -
  • Tx with OP_RETURN with 77 bytes of data refused by node
    A transaction with a 77 bytes OP_RETURN is refused, but with shorter data (e.g. 74 bytes) is accepted, although up to 80 bytes should work.What is the safe limit to be used?Per these references the maximum length is 80 bytes (83 for whole script) (…
    - 8 days ago 22 Nov 22, 9:33am -

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Getting Familiar with Bitcoin

What is Bitcoin?
The Definitive History of Bitcoin: An excellent graphical presentation of Bitcoin's development.
The True Value of Bitcoin: Stefan Molyneux