Originally, I imagined writing a single article describing blockchain’s disruptive potential.  As I delved deeper into this digital frontier, it became apparent that I needed three articles to do the topic justice:

  • the first (available here) to explore the principles of blockchain technology
  • a second (this article) to describe the enablers of the technology; and
  • a third and final (available here) to survey the current and future blockchain landscape in the Australian wealth management industry.

Previously, in part 1 of this series, we saw that the principles underpinning blockchain revolve around embedding trust within transfers of information and removing the need for trusted third party authorities. These principles have the potential to enable new exchanges of value and deliver efficiencies to many layers of the Australian wealth management industry.

Lets now translate this all into something tangible and answer the question that everyone starts to ask once they finally understand these concepts:

“How can I actually see or experience the blockchain with my own eyes?”

This is the question that stops most people and most companies from exploring blockchain more deeply than a cursory review of the concepts and technology. My empirical experience suggests there’s three pillars to the blockchain ecosystem that inform most people’s understanding of the technology:

  1. transacting on a public blockchain (the Bitcoin path)
  2. building or using a private blockchain (the Ripple path)
  3. coding a smart contract (the Ethereum path).

Lets examine each of these pillars individually.

The alpha – Bitcoin’s public blockchain

 The original and most famous expression of blockchain technology, Bitcoin is an open source peer-to-peer currency. Bitcoin operates on a public blockchain which means anyone is able to connect to the network, make transactions on the network, participate in the consensus process and read the database. Bitcoin has the largest number of network participants, the most distributed available computer processing power and therefore the lowest long-term probability of malicious participants causing systemic failures (e.g. forking and 51% attacks explained further in the notes below).

By connecting to the Bitcoin network (usually through a Bitcoin wallet provider) and making a Bitcoin transaction, an individual or company gets its first taste of blockchain technology in action. The majority of blockchain usage today comes from Bitcoin (or similar digital currency) transactions. The downside to the dominance of Bitcoin lies in the negative publicity that has been associated with it (examples such as Silk Road and Mt Gox are detailed in the notes below). However, it should be noted that the ability to execute illegal transactions with Bitcoin presents no greater inherent risk than the ability for physical currency to be laundered or used for illegal activities.

Interest in blockchain technology has grown rapidly despite the controversies associated with Bitcoin. However, banks and other large financial companies have been less enthused by the open source and egalitarian nature of a public blockchain.

The delta – Ripple’s private blockchain

The drawbacks of public blockchains have spurred the development of a different beast, the private blockchain where access to the underlying network is more tightly controlled and the ability to modify or even read the database is restricted to a smaller number of users. Private blockchains still confer benefits of decentralisation and authenticity but at the cost of re-introducing a network controller or intermediary that users must first authenticate with before they can participate in the consensus process.

Ripple represents the most widely used private blockchain and was developed as a competitor to the SWIFT protocol of international monetary transfer. Ripple harkens back to an ancient value transfer system (Hawala) which enabled money transfer to occur over large distances without the physical exchange of currency, see below:

Source: Ripple Explained: Medieval Banking with a Digital Twist

Ripple extends the Hawala principles further by allowing anything of value to be exchanged through a network of trusted agents transmitting electronic IOUs (in the form of a cryptocurrency called ripples) . The magic of Ripple lies in the algorithmic way it rapidly establishes trust between two counterparties that don’t know each other. Ripple does this using a combination of trusted agents, blockchain-based consensus methods between these agents and the use of ripples as a currency of last resort for the network.

Permissioned networks like Ripple appeal to banking institutions due to the additional level of control and security they can introduce. In many ways though, this tendency to introduce greater levels of control can be counter-productive to new blockchain banking entrants because it:

  • assumes that blockchain technology has matured to a point where an ideal or universal blockchain protocol has been agreed and can be adopted between banks and similar institutions
  • limits the ability for different intermediaries (e.g. non-banks) to participate and influence the development of the private blockchain network
  • inhibits the blockchain participants from introducing new customer-focused blockchain innovations beyond the primary purpose of the private blockchain network (which is typically money transfer).

The omega – Ethereum’s decentralised platform

Enter, Ethereum – the most comprehensive expression of blockchain technology to date. Ethereum is a decentralised platform that enables individuals or institutions to create and program their own blockchain-based decentralised applications (dApps).  Once programmed, these dApps can autonomously execute on the Ethereum network without the potential for manipulation or interference by malicious third parties.

Ethereum unlocks the potential of smart contracts on the blockchain (i.e. contracts written in computer code that are fulfilled without the active involvement of human counterparties). The smart contracts on Ethereum are fuelled by the network currency of choice (ether). Anyone on the Ethereum network that wants to create and run a smart contract or dApp will need to either earn ether (by participating in the consensus process) or buy it. This fabulous infographic describes this all more elegantly than I ever could.

To emphasise how important Ethereum is becoming to the blockchain ecosystem, consider the change in market value of Bitcoin (BTC), Ripple (XRP) and Ether (ETH) respectively. BTC has suffered sharp falls in early 2016, whilst ETH has climbed prodigiously to a market cap of $160m (trailing XRP for the number 2 cryptocurrency position by just $12m).

This rapidly developing importance stems from the fact that Ethereum provides the most comprehensive mechanism to innovate at every layer of the blockchain technology stack, as illustrated below:

Source: Ethereum Blog – On Silos

By examining these layers more closely, through Ethereum, we begin to understand more deeply how the evolution of blockchain parallels the development of the internet. Namely, that the potential applications of blockchain may be manifest but the technology won’t be meaningful until:

  • there is wide-scale adoption and acceptance of its underlying principles
  • there are new human-centered experiences that blockchain makes possible.

Pillars or principles?

This isn’t the case of which model will win. Each of these blockchain pillars (and their many variants) are underpinned by the same principle of trust through consensus. These pillars should be viewed through the same lense as the internet was viewed whilst it developed. The principles of the internet were only fully realised over time, as many disparate and private intranets connected with each other to form a truly global internet.

Taking this comparison further,

whilst the internet created a global network of connectivity, the blockchain will create a global network of trust.

In the third (and final) part of this article I’ll detail some human-centered experiences that blockchain will enable for Australian wealth consumers along with surveying the current and future landscape of blockchain technology in the Australian wealth management industry. In the meantime, please continue the conversation by commenting below.

Read the other articles in this series:

“Blockchain (part 1 of 3): a digital frontier”

“Blockchain (part 3 of 3): the autonomous revolution”

Technical reading (Forking and 51% attacks):

“What is Bitcoin fork?” from CEX.IO blog

“Bitcoin attacks in plain english” from Coding In My Sleep blog

Interesting articles (Silk Road and Mt Gox):

“The Rise and Fall of Silk Road” from Wired

“The Inside Story of Mt Gox: Bitcoin’s $460 million Disaster” from Wired


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