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Colin Harper

Colin Harper

Colin writes about Bitcoin. Formerly, he worked at CoinDesk as a tech reporter. Now, he is the Head of Research and Content at Luxor Technologies, and he also freelances for CoinDesk, Forbes and Bitcoin Magazine." He holds bitcoin.

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desert
Tech
Bitcoin mining
'A Race Toward Zero': With Hashrate in the Clouds, Bitcoin Mining Is Less Profitable Than Ever
ASIC financing has driven Bitcoin's hashrate to all-time highs in 2020. By consequence, Bitcoin is less profitable to mine than ever.
desert
By Colin Harper
Oct 27, 2020 at 9:51 p.m. UTC
Oct 27, 2020
Bitcoin MiningBitcoinBitcoin MinersHashrate
1-21
Tech
Bitcoin
4 Bitcoin Lightning Network Vulnerabilities That Haven’t Been Exploited (Yet)
Bitcoin’s Lightning Network has a few vulnerabilities that have been discovered in its two-year lifespan, but none have been exploited.
1-21
By Colin Harper
Oct 27, 2020 at 3:05 p.m. UTC
Oct 27, 2020
BitcoinLightning NetworkScalingVulnerabilities
screen-shot-2020-10-19-at-12-09-47-pm
Tech
Room 77
Closing Time for Bitcoin’s Iconic Room 77 – 'And That’s OK,' Says Owner
Room 77 originally opened as a side project, until Bitcoin came and made it an icon. Now, the first bar to ever accept bitcoin is closing.
screen-shot-2020-10-19-at-12-09-47-pm
By Colin Harper
Oct 19, 2020 at 8:08 p.m. UTC
Oct 19, 2020
Room 77BitcoinCOVID-19
bitcoin-and-crypto-mining-farm-big-data-center
Tech
Bitcoin mining
This New Service Plays Matchmaker Between Solo Miners, Big Mining Farms
Compass by HASHR8 matches individual miners with mining farms to host their hardware.
bitcoin-and-crypto-mining-farm-big-data-center
By Colin Harper
Oct 16, 2020 at 6:50 p.m. UTC
Oct 16, 2020
Bitcoin MiningASICsBitcoinHASHR8
endsars-protest
Tech
Charity
Nigerian Banks Shut Them Out, so These Activists Are Using Bitcoin to Battle Police Brutality
As End SARS protests against police brutality surge through Nigeria, the Feminist Coalition has turned to bitcoin as a financial lifeline.
endsars-protest
By Colin Harper
Oct 16, 2020 at 2:55 p.m. UTC
Oct 16, 2020
CharityNigeriaBTCPayBitcoin in AfricaProtests
taproot4
Tech
Bitcoin core
Taproot Has Been Merged Into Bitcoin Core: Here's What That Means
Bitcoin’s long-awaited Taproot update is one step closer to fruition.
taproot4
By Colin Harper
Oct 15, 2020 at 2:48 p.m. UTC
Oct 15, 2020
Bitcoin CoreSchnorrTaproot
brainwallet
Tech
Brain wallet
Brainwallets: The Bitcoin Wallet You Probably Shouldn’t Use (Unless You Have To)
A “brainwallet” refers to a private key that is stored in the user’s memory in the form of a seed phrase or a passphrase.
brainwallet
By Colin Harper
Oct 14, 2020 at 1:32 p.m. UTC
Oct 14, 2020
Brain WalletBitcoinBitcoin WalletsExplainers
closeup-woman-working-on-digital-tablet-using-stylus-pen-on-white-table
Tech
Bitcoin
This Self-Sovereign ‘DocuSign’ Uses Bitcoin for Digital Proofs
Woleet provides a digital ID software suite which allows its clients to authenticate documents and signatures using Bitcoin’s blockchain.
closeup-woman-working-on-digital-tablet-using-stylus-pen-on-white-table
By Colin Harper
Oct 6, 2020 at 7:52 p.m. UTC
Oct 6, 2020
BitcoinDigital IdentityWoleet
hand-drawing-of-sad-face-on-dusty-furniture-a-lot-of-dust-on-unclean-floor-background
Tech
Hack
DeFi Degens Hit Hard by Eminence Exploit Will Be Partially Compensated
DeFi traders piled into a token that was still in testing. After an exploit sent Eminence to zero, affected users are receiving restitution.
hand-drawing-of-sad-face-on-dusty-furniture-a-lot-of-dust-on-unclean-floor-background
By Colin Harper
Oct 1, 2020 at 9:44 p.m. UTC
Oct 1, 2020
HackDeFiEminence
makerdao-phone
Tech
Makerdao
MakerDAO Adds Chainlink, Compound, Loopring as Collateral Options
MakerDAO has voted to add support for a trio of new tokens for the decentralized finance (DeFi) loans that generate DAI stablecoins.
makerdao-phone
By Colin Harper
Sep 30, 2020 at 10:22 p.m. UTC
Sep 30, 2020
MakerDAOLoopringDeFiCompoundChainlink