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I am Jimmy Song. Ask me anything.

Song is a bitcoin developer and venture partner at Blockchain Capital. He has served as a principal architect at blockchain firm Paxos, as well as vice president of engineering at open-source wallet management platform Armory Technologies.

Song also runs a training company called Programming Blockchain, that provides blockchain programming and development training

Ask Jimmy Song about:

  • Bitcoin
  • Developing dApps
  • Future of Blockchain
  • Why Blockchain?
  • Ethereum
  • Smart contracts
  • Cryptocurrencies, in general
  • Initial Coin Offering
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109 discussions

We'd love to have in the Philippines - what would it take? Also is there a remote / self-paced version of the course?

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How many committed devs would be the minimum viable commitment?

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You recently visited Brazil, what you liked the most about the country and the community?

First, I love Brazil. I will be back some day. The people were what I most enjoyed. Everyone was super friendly and fun to be around.

Second, the sense that I got from a lot of Brazilians is that they really "get" the store of value property of bitcoin. They know what inflation is like and understand that having an asset that's not subject to inflation is really, really useful.

Third, Brazilians love their football! Since South Korea is out, I'll be cheering for Brazil the rest of the way.

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What do you think about "any amount of bitcoin" bet by Lubin? 😀 Why do you think you will win (seriously)?

I've been trying to get the guy to actually bet me, but he won't respond. I think I'll win because if there was a decentralized app using a blockchain that was popular, it would almost immediately be disrupted by a centralized app that would be able to do everything cheaper, faster, better.

The only exception I've found to this is money and that's because it's desirable for money to not change nor be under centralized control. For almost everything else centralization and change are desirable.

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Hi, Jimmy! Love to attend your talk in Blockchain Academy/SP.

What do you think about PoW change proposal? Do you see risk in the current mining hashrate centralization?


I don't see PoW change as necessary or desirable. The hash rate is in pools, which have lots of individual miners. The problem is that two things are currently conflated: mining reward variance reduction and block construction. The main danger is in pools controlling the latter. The former is absolutely desirable.

I think Matt Corallo's BetterHash would be a great way to separate the two concerns and decrease the main risk.

The assumptions under which people get scared about PoW 51% attacks is an economic actor which somehow gets some irretrievable good or service that costs a lot of money (many hundreds of bitcoins) through double spending. This is really hard to pull off in practice and pretty hard to get away with, so I don't really worry about it. The economic incentives generally align pretty well.

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What are some of your favorite blockchain projects?


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