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Let us frame the question, by reviewing what miners really do…

Miners play a critical role in the Bitcoin network. Their activity (searching for a nonce) results in assembling an immutable string of blocks that corroborate and log the universal transaction record. They are the distributed bookkeepers that replace old-school banks in recording and vouching for everyone’s purchase or savings.

From the perspective of a miner, there is no obvious connection between their activity and the worldwide network of bitcoin transactions and record keeping. They are simply playing an online game and competing against thousands of other miners in an effort to solve a complex and ongoing math problem. As they arrive at answers to small pieces of the problem, they are rewarded with bitcoin, which can be easily translated into any currency.

What is the Problem?

One day, mining for rewards will no longer be possible. The fundamental architecture of Bitcoin guarantees that mining will end. The pool of rewards that were held in abeyance as incentives is small and will run out in 2140—about 120 years from now. So, this raises the question: How will we incentivize miners when there is no more reward? (Actually, they won’t really be miners anymore…They will more accurately be bookkeepers or ‘validators’)

Is there a Solution?

Fortunately, there are many ways to offer incentives to those who validate transactions and maintain the books. Here are just a few:

  1. There is a current mechanism in which transactions bid for priority (speed of validation). Today, this mechanism augments the mining reward—particularly during periods of network performance. For example, the extra payments rose to $30 and more for individual transactions just before lightning network was adopted. In the future, it could replace the reward as the basis of a reward system.
  2. At the 2015 MIT Bitcoin Expo, Andreas Antonopoulos proposed a reputation ranking & reward system based on gaming theory. The ideal is that would result in a sufficient reward to maintain continuous network operation. Reputation points are not just a bragging point, but is likely to translate into real-world gravitas and financial opportunities.
  3. I believe that, one day, every user will be a micro-miner, and this will address the issue of incentives. For example, if users can avoid all mining fees by validating one transaction for every 10 of their own, we might see the widespread adoption of wallets that are full or partial nodes, rather than limited to the function of key storage.In this vision, micro mining will be achieved on a phone, a wristwatch, or a linked device at home. It will not result in an escalating race for increased power consumption…

I believe in this last solution and I have proposed it as the path forward at crypto/blockchain conferences.

Today, this idea seems implausible, because of the memory and computational requirements for running a full node. But, there have been big advancements in the effort to support micro-mining—which does not require such resources. Additionally, it is likely that the current proof-of-work mechanism used to arrive at a distributed consensus will be replaced by another mechanism that does not result in a competition to see who can consume the most electricity.

More about the sunset of mining incentives:

Philip Raymond co-chairs CRYPSA, hosts the New York Bitcoin Event and is keynote speaker at Cryptocurrency Conferences. He sits on the New Money Systems board of Lifeboat Foundation and is a top Bitcoin writer at Quora. Book a presentation or consulting engagement.

John Oliver is a crossover who bridges the art of a comedian with the reporting and perspective of a liberal political pundit. Even detractors acknowledge that Oliver addresses serious issues with unusual wit and humor.

I never thought Oliver could (or would) tackle the topic of cryptocurrency—at least not with value to the viewer. It is too geeky, and too esoteric. (It also cuts into my mission of evangelism and education). smile

He did, and he sparkles! Feel free to jump past the fluff. The Bitcoin tutorial starts at 3:40. Of course, my friend, Shechter, in Long Island New York will bust a gut over what Oliver says at 9:40. It is not only clear and concise, it is accurate and terribly funny!

Whether you are a Bitcoin newbie or a seasoned blockchain coder, this is the video you have been looking for. This one is durable.

Related Videos:

Today, I was asked to answer this question at Quora:

“What sets each cryptocurrency apart from the others?”

“Cryptocurrency” is a broad term. It refers to payment coins, of course—such as Bitcoin and Litecoin. But, because most tradeable tokens attain an asset value, the word is often used to refer to smart contract devices, such as Ethereum, a host of other blockchain based tokens, functional Internet-of-Things tokens, and even ICOs (Initial Coin Offerings). Since people treat ICOs and IOT tokens as investment instruments even if they are useless as a payment mechanism, they all fall within the realm of a cryptocurrency.

So, before addressing the question, let’s distinguish between Altcoins and ICOs. I assume the question refers to Altcoins, and not ICOs…

ICOs are almost all scams. A very few of these are designed to function in a well-defined IOT role (Internet-of-Things). But, any ICO that you are likely to hear about share one or more traits described here.

But Altcoins are different. These are typically forked from Bitcoin or another established blockchain-backed coin. They are created because developers feel that they have solved one or more of the problems that limit the growth or appeal of Bitcoin. For example, Bitcoin has (or recently had) all these problems or perceived limitations:

  • Transaction Malleability (Recently solved with activation of SegWit)
  • Speed of transaction (Now being addressed by Lightning Network)
  • Cost of transaction (Also addressed by Lightning Network early 2018)
  • Very high electrical demand by miners (Still a major problem)
  • Fairness of and speed of distributed governance process (a big problem)
  • Finding a validation incentive after mining runs out (a long term issue)
  • Deep privacy features. These are inherent to Monero and Zcash. (Bitcoin will soon support onion routing transactions to enhance privacy)
  • Disparate goals of miners, developers, vendors and users (still a problem)
  • Limited Smart Contract mechanism (Ethereum is the current king in this realm, with slick methods of administering and executing contracts. Bitcoin will eventually acquire these features & benefits.
  • Like ICOs (these are almost all scams), some Altcoins (not scams) address specific IOT applications. This is a legitimate and non-payment use of blockchain technology. It represents a promising evolution. It is not yet clear if Bitcoin can eventually adopt these features and function in a non-payment, IOT capacity. The intrinsic, stored value aspect of Bitcoin would make it difficult to use in such applications.

One big problem facing Bitcoin is that the distributed consensus mechanism that makes it a trusted, peer-to-peer mechanism is based on Proof-of-Work (POW). Coupled with a mining incentive that increases dramatically with exchange rate, Bitcoin is—quite simply—untenable. With consumption topping 33 terawatt hours in December 2017, it already consumes more power than some countries. If even 2% of the world’s payment transactions were settled in Bitcoin, the mining would consume more power than is generated throughout the world. This just cannot continue!

Fortunately, developers and armchair inventors have proposed or demonstrated clever POW alternatives to achieve a fair distributed consensus. Some of these use a Proof-of-Stake mechanism, while others add a limited central-authority nexus to facilitate governance and scaling. Some are built on a modified blockchain that weaken several pillars of a true decentralized, p2p network. Of course, researchers are concerned that these systems deteriorate the decentralized nature of Satoshi’s original blockchain.

But, other systems may allow for a fully distributed and democratic trust platform, such as BFT Replication (IBM) or Distributed Objective Consensus, which was proposed by an amateur mathematician.

In reply to the title question, Altcoins are set apart by their claim to address the above problems & limitations, or to add features.

Will an Altcoin Triumph over Bitcoin?

Perhaps, a few altcoins will thrive, due to specific niche advantages; features that Bitcoin chooses not to address, such as deep anonymity or with a novel utilitarian feature that facilitates a specific Internet-of-Things process.

Unfortunately for altcoins, all coins require public trust and transparency. For this reason, they are open source, permissionless, without licensing, without patent protection and with a fully disclosed pre-mining history. And for that reason, Bitcoin is free to steal any clever advantage that works. It’s all up for grabs and no one can be sued.

In effect, each altcoin as a beta test platform for Bitcoin. Now that Bitcoin is finally addressing the problems of scalability and fair/speedy governance, there is little doubt that it will continue to dwarf other coins.

Philip Raymond sits on Lifeboat’s New Money Systems board. He co-chairs CRYPSA, hosts the New York Bitcoin Event and is keynote speaker at Cryptocurrency Conferences around the world. Book a presentation or consulting engagement.

First, let’s get some basics out of the way…

What is Transaction Malleability?

Here are 2 explanations of transaction malleability: [Coindesk] [TechTalk]

In a nutshell, Transaction Malleability is a weakness in the original Bitcoin implementation that enables a bad actor to change the unique ID of a bitcoin transaction before it is confirmed on the Blockchain. Such a change makes it possible for someone to pretend that a transaction didn’t happen, if all necessary conditions are in place.

As the Coindesk article points out, a successful attack requires certain conditions that make a successful attack difficult or even unlikely. Many analysts referred to it as a bug that should eventually be fixed, rather than an urgent issue.

Was This Flaw Addressed

Transaction malleability was addressed (for Bitcoin) with the introduction of Segregated Witness (SegWit) in August 2017. 1, 2

But Was There a Successful Attack?
Attack? Yes. Successful? It’s doubtful…

In March 2017, five months before SegWit was implemented, a mining pool that administers 2% of worldwide activity launched a malleability attack. No one lost money – and some individuals believe that they did this to emphasize urgency and hasten the adoption of SegWit.

What About Lightning Network?

The Lightning Network is a ‘Level 2’ network overlay, currently being adopted by miners (depending on the service or exchange, it is being incrementally activated in the first months of 2018). To function properly, it requires that transaction malleability be solved. But, in the event that a miner is not SegWit compliant, it can resolve the malleability problem in other ways.

1 SegWit should not be confused with SegWit2x, an upgrade process that was cancelled a few months later in November. 2017

2 In the TechTalk article linked above, the author concludes:

“Transaction Malleability is fixed with Segregated Witness by no longer taking into account signatures when calculating the transaction’s fingerprint. Fixing Transaction Malleability means that the Lightning Network can work smoothly.”

Philip Raymond co-chairs CRYPSA, hosts the New York Bitcoin Event and presents at
Crypto Conferences around the world. Book a presentation or consulting engagement.

“Friday morning, David Tran, co-founder and CTO of PR-software startup Upbeat, did just that. Tran built and published a Chrome extension called On The Blockchain in around 15 minutes. Subtitle: “Everything is better on the blockchain.””

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“To encourage exploration and eventual use of this technology in support of climate action, the UN Climate Change secretariat initiated and facilitated the creation of the Climate Chain Coalition and contributed to the writing of its charter of principles and values … ”

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Some blogs and news outlets eschew long titles. Publishers want readers to scan a list of topics that fit on one-line each. But, a better title for this article would be:

“Massive electric consumption by cryptocurrency mining:
An unfortunate environmental nightmare will soon pass!
… Proof-of-Work alternatives are on the horizon”

A considerable amount of electricity is used in the process of mining Bitcoin and other cryptocurrencies. Miners are effectively distributed bookkeepers, and this use of resources is part of a system called “proof-of-work”. It keeps the books fair, honest, and without an ability for the miners to collude (In other words, they cannot ‘cook the books’).

What makes the process unique and exciting is that this “distributed consensus” does not require a trusted authority, like a bank. In fact, the whole point of the blockchain revolution is that users trust a mechanism rather than a bank, government or even each other.

But, for any network that hopes to become part of the financial fabric, it must be ubiquitous and in constant motion. Proof-of-work just doesn’t make the grade, because it doesn’t scale. The need for miners to prove that they did something complex sucks up too much power. If Bitcoin or any proof-of-work currency were to be adopted for even a small fraction of commercial and personal transactions, it would overwhelm the world’s energy services.

One reader suggests the problem will be solved by the recent boom in shale fracking and renewable, non-polluting energy. He points out that crypto mining may even drive a market for distributed, clean electric production.

Unfortunately, clean and cheap power makes the problem worse. Even if electric capacity were to rise dramatically and experience a great cost reduction, cryptocurrency networks would automatically demand all the extra electricity. It is a no-win game, because mining incentives escalate with an increase in supply or drop in cost.

Will large-scale, blockchain-based networks fail, because of enormous electric demand? Fortunately, the future is not so bad, after all. Although networks, like Bitcoin, currently use proof-of-work to ensure honesty and fairness, it is only one of many possible measurement and enforcement mechanisms. Eventually, developers and miners will swap in another proof mechanism to keep the network humming—and without creating an environmental catastrophe.

Will Change in Proof Come in Time?

The political process for changing the fairness mechanism (“forking the code”) is complex and fraught with infighting, but the problem will eventually be addressed, and it will be solved before electricity becomes a critical issue. Despite a messy voting process, the miners have too much at stake to ignore this problem much longer.

Various proof alternatives are already being used in altcoins. Since Bitcoin is perfectly free to steal these techniques (none can be protected by patent or trade secrecy), we can think of these other coins as beta-tests for Bitcoin. How so? As the first and biggest elephant in the room, Bitcoin will likely reign supreme, as long as it doesn’t wait too long before grabbing the best technology and tucking it into its quiver.

Proof-of-Work Alternatives

  • One method, already used by some altcoins, is called “proof-of-stake”. It’s a bit like getting voting rights based on how much land you own. This method does not demand lots of electricity—but some analysts feel that is not as fair, because it cedes network control to the wealthiest members.
  • Another method, called BFT Replication was developed by Marko Vukolić, at the IBM Blockchain Group in Zurich Switzerland. It might be exactly what we need.
  • Yet another method was proposed by C.V. Alkan, an amateur analyst with a passion to solve this problem. He calls it Distributed Objective Consensus.

These aren’t the only alternatives to proof-of-work. Ultimately, one or more of these fairness enforcement mechanisms will make its way into Bitcoin and other currencies and blockchain services. In my opinion, the electrical crisis is a genuine threat, but it is one that with a solution that will be implemented soon—perhaps even this year.

Related:

Philip Raymond co-chairs CRYPSA, publishes A Wild Duck and hosts the New York Bitcoin Event. He is keynote speaker at the Cryptocurrency Expo in India this month. Click Here to inquire about a presentation or consulting engagement.

Let’s say that you no longer trust your currency exchange to host your Bitcoin wallet and you don’t trust a Trezor or Nano hardware wallet. You don’t trust your memory and you don’t trust your kids. And you certainly know better than to keep your wealth in your PC or phone. That would be downright crazy—right? What can you do?!

A growing number of people are printing paper wallets. It is the ultimate form of security. Some individuals even delete their cloud wallet, leaving everything to a string of hex characters or a QR code printed onto a slip of paper. (NB. You had better be certain that you and a few trusted individuals know how to find that piece of paper!)

But here’s an interesting mystery. If you print the paper wallet off-line and delete your other wallets, then how can the blockchain ‘know’ that you have changed wallets? The short answer: It doesn’t and you haven’t!

Let’s explore a bit deeper…

  • The deed to your house is stored and maintained by a registry. It is housed in a court house or other government building.
  • With a bearer bond, a certificate in your posession is the actual item of value.

But, in both cases, the fact that you made a photocopy of your deed or corporate bond is not of any consequence to others. It is the same with a Bitcoin wallet. (In this case, the ownership record is netiher in a government warehouse nor in your posession. It is crowd-sourced).

Printing out a paper wallet does not change your wallet ID. The paper wallet is simply another method of storing and retrieving the proof that you own a part of a mathematical solution set—That is, you know the solution to a problem.

Your paper wallet is just a copy the keys to your wealth. Of course, you may choose to destroy the other keys, that’s your business. No one knows or verifies that you still have access to your stored knowledge or how you stored it. It’s up to you to maintain access to the “document”. The blockchain only records a transfer of ownership from one wallet to another at the time of a payment transaction.

Got it? I hope you like the metaphors. I am fairly proud of myself for this explanation.

Philip Raymond co-chairs CRYPSA, publishes A Wild Duck and hosts the New York Bitcoin Event. Last month, he kicked off the Cryptocurrency Expo in Dubai. Click Here to inquire about a live presentation or consulting engagement.

Everyone likes a good mystery. After all, who isn’t fascinated with Sherlock Holmes or the Hardy Boys? The thirst to explore a mystery led us to the New World, to the ocean depths and into space.

One of the great mysteries of the past decade is the identity of Satoshi Nakamoto, the inventor of Bitcoin and the blockchain. Some have even stepped forward in an effort to usurp his identity for fame, infamy or fortune. But in this case, we have a mystery in which the subject does not wish to be fingered. He prefers anonymity.

This raises an interesting question. What could be achieved by discovering or revealing the identity of the illusive Satoshi Nakamoto?…

The blockchain and Bitcoin present radically transformative methodologies with far ranging, beneficial impact on business, transparency and social order.

How so? — The blockchain demonstrates that we can crowd-source trust, while Bitcoin is much more than a payment mechanism or even a reserve currency. It decouples governments from monetary policy. Ultimately, this will benefit consumers, businesses and even the governments that lose that control.

Why Has Satoshi Remained Anonymous?

I believe that Satoshi remains anonymous, because his identity, history, interests and politics would be a distraction to the fundamental gift that his research has bestowed. The world is still grappling with the challenge of education, adoption, scaling, governance, regulation and volatility.

Some people are still skeptical of Bitcoin’s potential or they fail to accept that it carries intrinsic value (far more than fiat currency, despite the absence of a redemption guaranty). Additionally, we are still witnessing hacks, failing exchanges and ICO scams. Ignorance is rampant. Some individuals wonder if Satoshi is an anarchist—or if his invention is criminal. (Of course, it is not!).

Outing him now is pointless. He is a bright inventor, but he is not the story. The concepts and coin that he gave us are still in their infancy. Our focus now must be to understand, scale and smooth out the kinks, so that adoption and utility can serve mankind.

Related Ruminations:

Philip Raymond co-chairs CRYPSA, publishes A Wild Duck and hosts the New York Bitcoin Event. He was keynote at the Cryptocurrency Expo in Dubai. Click Here to inquire about a live presentation or consulting.

“A report outlining how blockchain technology will usher in a new era of the internet has been published by the World Economic Forum at its 11th Annual Meeting of the New Champions, taking place on 27–29 June in Dalian, People’s Republic of China.”

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