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Is Blockchain Truly Decentralized?

Chad Hahn by Chad Hahn
August 13, 2018
in Startups, Technology
Reading Time: 3 mins read
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Decentralization — the notion that we can build a platform that requires no trusted third party intermediary — is a key aspect of blockchain technology. It’s driving the current gold rush in blockchain space. Investors are pouring money into the ecosystem through ICOs and angel investments as entrepreneurs hope to build “decentralized” versions of everything: money (Bitcoin), file storage (FileCoin), identity (SecureKey), supply chain (Viant) — the list goes on and on.

Why is decentralization important to you? Because it makes the products and services you consume more secure. Data on a blockchain network is distributed and encrypted, making it much harder to hack. Imagine if there was a decentralized version of credit reporting, where your information was encrypted and distributed across multiple places instead of a single location. This would make it much harder to perform the next Equifax hack.

But how decentralized is blockchain technology? Not very, if we look at the Bitcoin scaling debate of 2017.

Bitcoin is currently the largest blockchain in existence. Perhaps the most decentralized blockchain in existence, Bitcoin has almost 10,000 nodes running its protocol, making it all but impossible for a bad actor to take control of the blockchain. But Bitcoin has a scaling problem. Currently, the network can process roughly seven transactions per second. By comparison, Visa can process roughly 50,000 transactions per second (it’s everywhere you want to be).

The scaling problem is solvable, but in the community, there’s a heated and sometimes vitriolic disagreement on how to do so. Without going into great detail into the technical nuances between competing options (which would be a blog post on its own), there are essentially two camps:

  • Bitcoin miners — These are the people who bring all the hashpower to Bitcoin’s blockchain, validating transactions and leveling security. A sizeable portion of hashpower influence comes from a small group of large mining operators, most notably Bitmain. They want to see larger block sizes to scale the network. Currently, Bitcoin blocks are limited to 1mb and it’s creating a bottleneck.
  • Bitcoin core developers — These people build and maintain the Bitcoin protocol. They argue larger block sizes should only be created if a consensus of nodes on the network asks for it. And they worry that a small group of large mining operations shouldn’t be allowed to “change the rules” in a network built on decentralization.

To be clear, I’m loosely defining these two camps. In any crowdsourced community, there are individuals within these groups who might not align with these positions, but this is essentially how the debate has shaped up. A compromise was offered by the Digital Currency Group at Consensus 2017 called SegWit2x. (You can learn more about this compromise here.)

Here’s the problem: SegWit2x didn’t happen. The upgrade was called off in November 2017 due to lack of consensus among the participating nodes. And so the scaling problem continues.

The way I see it, two concentrated groups were controlling the debate and ultimately the future of the Bitcoin network. And unfortunately, the lack of agreement has led to a tribal mentality, similar to our American political system, where groups talk past each other while everyone suffers. How is that decentralized?

Let’s put this in a larger context. According to Rod Collins, our Director of Innovation, digital transformation is a social revolution as much as it is a technological one. Blockchain technology has the chance to fundamentally change how we operate — our businesses, our governments, and our communities. But we’ll never get there if centralized groups within the network prohibit its growth through lack of agreement. The irony here is that blockchain, the technology, is built on computer algorithms that rely on a consensus of computers on the network to agree. But blockchain, the social movement, suffers from a lack of consensus on how to move forward, at least in regard to Bitcoin.

Perhaps Bitcoin and other blockchain networks can learn from their ancestors — the open source movement — on how to generate a consensus from a loose-knit group of community participants. If we don’t get there, the dream of decentralization will never become a reality.

Tags: bitcoinblockchaindecentralizationInteresting
Chad Hahn

Chad Hahn

Chad Hahn is a Vice President at Pariveda Solutions, a digital consultancy with offices across the US. Chad is a technology executive and entrepreneur with 20 years of experience in business development, strategy and execution of technology-focused initiatives. He has started and successfully exited two service businesses, one of which was focused on social enterprise. He has a strong background in digital strategy, organizational change and enterprise architecture, with deep expertise in both traditional and emerging technologies.

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