Bitcoin Core

Bitcoin Core is the most widely used reference client for Bitcoin. Bitcoin Core also refers to the group of developers who maintain the client.

Bitcoin Core people

Top experts from the Bitcoin Core network.

Reviews by Bitcoin Core people

Cryptocurrency reviews from the executives, employees and alumni of Bitcoin Core.

  • Mike Hearn on Bitcoin Lead Platform Engineer at R3 CEV

    Why has Bitcoin failed? It has failed because the community has failed. What was meant to be a new, decentralised form of money that lacked “systemically important institutions” and “too big to fail” has become something even worse: a system completely controlled by just a handful of people. Worse still, the network is on the brink of technical collapse.

    Full review 💩


  • Luke Dashjr on Litecoin Bitcoin Core Developer

    Litecoin and other scamcoins like it, on the other hand, do not bring anything new to the table.

    They are just mere clones that retain the pump-and-dump nature of Bitcoin, but without the innovation that makes Bitcoin viable as a currency.

    Full review 💩


  • Pieter Wuille on Monero Blockstream co-founder

    All privacy technology comes with a cost, and unfortunately, Monero (and Zcash) style transactions have a very significant impact on scalability (spent coins db).

    Full review 💩


  • Matt Corrallo on IOTA Engineer at Chaincode Labs and Bitcoin Core Developer

    Most of the stuff in this space doesn't get actively exploited. Look at BTCP or IOTA, both terribly, hilariously insecure, and, yet . . . nothing. That doesn't make them secure; it only means there is lower-hanging fruit for people to exploit.

    Full review 💩


  • Peter Todd on IOTA Applied Cryptography Consultant

    IOTA is so batshit crazy they managed to turn a theoretical one-time-signature vulnerability into an actual, practical-to-exploit one.

    Full review 💩
    Show thread Peter Todd on IOTA


  • Gavin Andresen on IOTA Former lead developer of Bitcoin Core

    I like to think the markets will eventually abandon tech-train-wreck coins (like IOTA).

    Full review 💩


  • Peter Todd on Ethereum Classic Applied Cryptography Consultant

    Antibailout Ethereum Classic gets its first exchange support: …

    Hopefully, other exchanges do the ethical thing, too.

    Full review 🔑


  • Luke Dashjr on Bitcoin Cash Bitcoin Core Developer

    BCH has nothing to do with Bitcoin

    Full review 💩


  • Peter Todd on Dash Applied Cryptography Consultant

    Note how the Dash masternode scheme has the effect of artificially pumping dash... which would he really funny if anti-privacy spies are running masternodes, and thus propping up the price!

    Full review 💩


  • Gavin Andresen on Bitcoin Former lead developer of Bitcoin Core

    BTC is the Birkin Bag of crypto-assets. Expensive and rare with high transaction costs but huge brand value.

    Full review 🔑


  • Jeff Garzik on Litecoin Founder and CEO of Bloq

    Litecoin is a cheaper, faster, marginally less-secure version of BTC. Plenty of advantages there.

    Full review 🔑


  • Peter Todd on Storj Applied Cryptography Consultant

    As for the coins associated with MaidSafe and Storj, there's no reason to think any of this instant confirmation, low-fee, no-mining stuff is Sybil resistant. Sure, it might work if we can rely on the majority of nodes being honest and you not being Sybil attacked, but at best that's certainly a lesser standard of security than Bitcoin offers; at worst it just won't work.

    Full review 💩


  • Jeff Garzik on Tron Founder and CEO of Bloq

    TRON is a fascinating economic and ethical study. Can a photocopy pump be backfilled with real substance?

    It's like paper mache art. Inflate a paper-thin balloon, then surround it with hardened substance.

    Full review 💩


  • Jeff Garzik on Binance Coin Founder and CEO of Bloq

    Continuing to be impressed by Binance.

    Silicon Valley talks about building a "moat". Binance's $BNB is just that; it's integrated in 100 little ways into their website, from fee rebates to voting to small altcoin balance exch; very sticky.

    Full review 🔑


  • Jimmy Song on Bitcoin SV Instructor at Programming Blockchain

    When Bitcoin Cash and Bitcoin SV get to mining cost equilibrium, assuming their prices are both $100, the cost to reorganize 6-blocks will be $7,500 (12.5 block reward with almost no fees x $100 x 6 blocks ). In 1.5 years that cost halves. Still think a fee market is ridiculous?

    Full review 💩


  • Luke Dashjr on Bitcoin Gold Bitcoin Core Developer

    [Bitcoin Gold] is an altcoin not a hard fork.

    Hard forks are when an existing system changes (in a non-backwards compatible way). New systems are just altcoins, never hardforks.

    The part that confuses people is that if you attempt a hardfork without consensus, you end up with an altcoin instead.

    Full review 💩


  • Gavin Andresen on Bitcoin Cash Former lead developer of Bitcoin Core

    Just heard from another merchant adding BCH.

    I think we’ll see a wave of “dropping BTC, customer support costs too high” within six months.

    Full review 🔑
    Show thread Gavin Andresen on Bitcoin Cash


  • Peter Todd on Dogecoin Applied Cryptography Consultant

    Dogecoin is merge-mined, so the marginal cost to attack it is zero; attacking Monero is much more expensive than that.

    Full review 💩


  • Luke Dashjr on Ravencoin Bitcoin Core Developer

    ASIC-resistant [like Ravencoin's attempt] is stupid. It just gives a bigger advantage to whoever does it first.

    Full review 💩


  • Peter Todd on Zcoin Applied Cryptography Consultant

    The Zcoin trusted setup is *really* clever: they reused a pubkey generated 25 years ago for the RSA Factoring Challenge.

    Full review 💩


  • Gavin Andresen on Ethereum Former lead developer of Bitcoin Core

    Ethereum processes more transactions [than Bitcoin]. Has lower fees. And more p2p nodes. . . . [M]ore scale means more decentralization.

    Full review 🔑
    Show thread Gavin Andresen on Ethereum


  • Jimmy Song on Bitcoin Instructor at Programming Blockchain

    Bitcoin is something that is natural, decentralized, uncontrolled and digital. This is something that didn’t exist before Satoshi invented it in 2008 and I would argue, doesn’t exist with any other cryptocurrency. This is the key to Bitcoin’s usefulness as money. Scarcity is the first thing that’s required without which its proposition as money crumbles.

    Full review 🔑
    Show thread Jimmy Song on Bitcoin


  • Jimmy Song on Bitcoin Cash Instructor at Programming Blockchain

    Bitmain is the central bank of BCH. Bitmain has tried to maintain a peg to their reserve currency, BTC, and has failed. Bitmain has failed to keep the peg at 0.15 BTC, 0.12 BTC and recently capitulated the 0.1 BTC level. This is a central bank selling its reserves to keep its peg to another currency. What’s worse, much like a central bank, they’re running out of reserves and BCH will finally float on the market instead of having the artificially inflated value that it has now.

    Full review 💩


  • Peter Todd on Zcash Applied Cryptography Consultant

    The reality is bleeding-edge crypto is risky; the counterfeiting vulnerability is the second inflation bug that Zcash has had.

    BTC has categorically worse privacy than ZEC on L1,, but the trade-off is a safer system re: total loss. Had this been exploited, it could have easily been a loss of hundreds of millions of dollars.

    On BTC, an inflation bug is very likely to get caught quickly, even if exploited, because of the transparency. There might be a few days shutdown at worse: awful but survivable even in the worst case.

    Full review 💩
    Show thread Peter Todd on Zcash


  • Peter Todd on Monero Applied Cryptography Consultant

    In theory, Zcash has better privacy than XMR; in practice, due to XMR's mandatory privacy, XMR is probably better overall but depends on what exactly you're doing and how.

    Zcash is cooler crypto; XMR is relatively boring. Of course, boring and working is what you want in money.

    Full review 🔑
    Show thread Peter Todd on Monero


  • Jeff Garzik on Ethereum Founder and CEO of Bloq

    The more "wrapped" tokens [from other cryptocurrencies] on ETH, the more ETH becomes a blockchain for financial exchange. Wrapped BTC was actually mentioned in one of [Ethereum founder] Vitalik Buterin's earliest papers, and is now a reality.

    Being able to create smart contracts that can work with multiple currencies is very powerful from a programmability standpoint. Smart contracts could be written to ingest and dispense BTC, ETH, ETC, USD and more depending on conditions. Asset baskets could be automated on chain.

    Full review 🔑