Over the last 10 years, the Bitcoin ecosystem has attracted developers to dedicate thousands of hours to improve and revamp most of its underlying codebase. Yet, Bitcoin (BTC) is largely the same. The reason for this is that its core set of consensus rules that define its monetary properties, such as its algorithmic inflation and hard-coded supply, remain unchanged.
Time and time again, factions have attempted to change these core properties, but all hostile takeovers thus far have failed. Its often a painful process but one that highlights and solidifies two of Bitcoins biggest virtues: No single party can dictate how Bitcoin evolves; and the absence of centralized control protects Bitcoins monetary properties.
The values that make Bitcoin a popular phenomenon are also those that make developing software atop Bitcoin more challenging than any other digital asset. Developers are limited to what theyre able to transform in order to not undermine its apparatus as a store of value.
Nonetheless, as well see from the examples below, innovation in Bitcoin is possible. It requires creativity and patience.
Since changing Bitcoins core layer requires a quasi-political process that may infringe upon its monetary properties, innovation is often implemented as modules. This development is similar to that of the internet's protocol suite, where layers of different protocols specialize in specific functions. Emails were handled by SMTP, files by FTP, web pages by HTTP, user addressing by IP and packet routing by TCP. Each of these protocols has evolved over time to create the experience we have today.
Spencer Bogart of Blockchain Capital has captured this development succinctly: We are now witnessing the beginning of Bitcoins own protocol suite. The inflexibility of Bitcoins core layer has birthed several additional protocols that specialize in various applications, like Lightnings BOLT standard for payment channels. Innovation is both vibrant and relatively safe, as this layered approach minimizes potential risks.
The diagram below is an attempt to map all relatively new initiatives and showcases a more complete representation of Bitcoins technology stack. It is not exhaustive and does not signal any endorsement for specific initiatives. It is, nevertheless, impressive to see that innovation being pushed on all fronts from Layer 2 technologies to emerging smart contract solutions.
There has been a lot of talk lately about the rate of adoption of the Lightning Network, Bitcoins most prominent Layer 2 technology. Critics often point to an apparent decline in the number of channels and total BTC locked when evaluating Lightnings user adoption. Yet, these metrics arent the most definitive measurement of adoption.
Related: What Is Lightning Network And How It Works
One of the most underrated virtues of the Lightning Network is its straightforward privacy properties. Since Lightning does not rely on global state reconciliation i.e., its own blockchain users can transact privately over using additional techniques and network overlays, like Tor. Activity happening within private channels is not captured by popular Lightning explorers. As such, an increase in private usage of Lightning has resulted in a decrease in what can be publicly measured, leading observers to erroneously conclude that adoption is down. While it is true that Lightning must overcome substantial usability barriers before it can enjoy wide adoption, using misleading metrics to make assertions about the current state of the network serves few.
Another recent development in the field of Layer 2 privacy was the creation of WhatSat, a private messaging system atop Lightning. This project is a modification of the Lightning Network Daemon (LND) that allows the relayers of private messages, who connect the entities communicating, to be compensated for their services via micropayments. This decentralized, censorship-and-spam-resistant chat was enabled by innovations in the LND itself, such as recent improvements in the lightning-onion, Lightnings own onion routing protocol.
There are several other projects leveraging Lightnings private micropayment capabilities for numerous applications from a Lightning-powered cloud computing VPS to an image hosting service that shares ad revenue via microtransactions. More generally, we define Layer 2 as a suite of applications that can use Bitcoins base layer as a court where exogenous events are reconciled and disputes are settled. As such, the theme of data anchoring on Bitcoins blockchain goes beyond Lightning, with companies like Microsoft pioneering a decentralized ID system atop Bitcoin.
There are projects attempting to bring back expressive smart contract functionality to Bitcoin in a safe and responsible way. This is a significant development because, starting in 2010, several of the original Bitcoin opcodes the operations that determine what Bitcoin is able to compute were removed from the protocol. This came after a series of bugs were revealed, which led Satoshi to disable some of the functionality of Script, Bitcoins programming language.
Over the years, it became clear that there are non-trivial security risks that accompany highly-expressive smart contracts. The common rule of thumb is that the more functionality is introduced to a virtual machine the collective verification mechanism that processes opcodes the more unpredictable its programs will be. More recently, however, we have seen new approaches to smart contract architecture that can minimize unpredictability and also provide vast functionality.
The devise of a new approach to Bitcoin smart contracts called Merklized Abstract Syntax Trees (MAST) has since triggered a new wave of supporting technologies for Bitcoin smart contracts. Taproot is one of the most prominent implementations of the MAST structure that enables an entire application to be expressed as a Merkle Tree, whereby each branch of the tree represents a different execution outcome.
Another interesting innovation that has recently resurfaced is a new architecture for the implementation of covenants, or spend conditions, on Bitcoin transactions. Originally proposed as a thought experiment by Greg Maxwell back in 2013, covenants are an approach to limit the way balances can be spent, even as their custody changes. Although the idea has existed for nearly six years, covenants were impractical to be implemented before the advent of Taproot. Currently, a new opcode called OP_CHECKTEMPLATEVERIFY formerly known as OP_SECURETHEBAG is leveraging this new technology to potentially enable covenants to be safely implemented in Bitcoin.
At first glance, covenants are incredibly useful in the context of lending and perhaps Bitcoin-based derivatives as they enable the creation of policies, like clawbacks, to be implemented on specific BTC balances. But their potential impact on the usability of Bitcoin goes vastly beyond lending. Covenants can allow for the implementation of things like Bitcoin Vaults, which, in the context of custody, provide the equivalent of a second private key that allows someone that has been hacked to freeze stolen funds.
In essence, Schnorr signatures are the technological primitive that make all of these new approaches to smart contracts possible. And there are even edgier techniques being currently theorized, such as Scriptless Scripts, which could enable fully private and scalable Bitcoin smart contracts to be represented as digital signatures as opposed to opcodes. These new approaches may enable novel smart contract applications to be built atop Bitcoin.
There have also been some interesting developments in mining protocols, especially those used by mining pool constituents. Even though the issue of centralization in Bitcoin mining is often wildly exaggerated, it is true that there are power structures retained by mining pool operators that can be further decentralized.
Namely, pool operators can decide what transactions will be mined by all pool constituents, which grants them considerable power. Over time, some operators have abused this power by censoring transactions, mining empty blocks and reallocating hashing without the authorization of constituents.
Changes to mining protocols have aimed to subvert the control that mining pool operators can have on deciding what transactions are mined. One of the most substantial changes coming to Bitcoin mining is the second version of Stratum, the most popular protocol used in mining pools. Stratum V2 is a complete overhaul that implements BetterHash, a secondary protocol that enables mining pool constituents to decide the composition of the block they will mine not the other way around.
Another development that should contribute to more stability is reignited interest in hash rates and difficulty derivatives. These can be particularly useful for mining operations that wish to hedge against hash rate fluctuations and difficulty readjustments.
Contrary to some arguments out there, there are a host of emerging protocols that can bring optional privacy into Bitcoin. That being said, it is likely that privacy in Bitcoin will continue to be more of an art than a science for years to come.
More generally, the biggest impediment to private transactions across digital assets is that most solutions are half-baked. Privacy assets that focus on transaction-graph privacy often neglect network-level privacy, and vice versa. Both vectors suffer from a lack of maturity and usage, which makes transactions easier to de-shield via statistical traceability analysis at either the peer-to-peer (P2P) network layer or the blockchain layer.
Thankfully, there are several projects that are pushing boundaries on both fronts.
When it comes to transaction-graph privacy, solutions like P2EP and CheckTemplateVerify are interesting because privacy becomes a by-product of efficiency. As these are novel additions to CoinJoin, such solutions can increase the adoption of private transactions by users who are solely motivated by lower transaction fees. Under CoinJoin, their privacy guarantees are still suboptimal, but unshielded sent amounts can be beneficial, as they preserve the auditability of Bitcoins supply.
If lower transaction fees become a motivator and lead to an increase in Bitcoins anonymity set the percentage of UTXOs that are CoinJoin outputs de-anonymization via statistical analysis will be even more subjective than it already is.
There has also been considerable progress in the privacy of P2P communications, with protocols like Dandelion being tested across crypto networks. Another notable development is Erlay, an alternative transaction relay protocol that increases the efficiency of private communications and reduces the overhead of running a node. Erlay is an important improvement since its efficiency gains enable more users to more easily complete IBD and continuously validate the chain, especially in countries where ISPs impose caps on bandwidth.
These examples are only a handful of initiatives in play to transform the Bitcoin framework. Bitcoin, in its totality, is a constantly evolving suite of protocols.
While evolution within a relatively strict set of rules and values can be challenging for developers, the layered approach that weve seen unfold is what makes gradual, effective change possible. Minimizing politicism within Bitcoin and protecting its fundamental monetary properties are necessary parts of the process. Developers are learning how to work within these bounds in a meaningful fashion.
The views, thoughts and opinions expressed here are the authors alone and do not necessarily reflect or represent the views and opinions of Cointelegraph.
Lucas Nuzzi, director of technology of Digital Asset Research. He heads up DARs research arm, developing original reports and insights on all areas of the cryptocurrency ecosystem. Widely regarded throughout the digital asset community as an expert on blockchain and distributed systems, Lucas has contributed to several major publications. Prior to co-founding DAR in 2017, he was a blockchain researcher and consultant for a handful of years.
Read the rest here:
The Evolution of Bitcoin's Technology Stack - Cointelegraph
- History of Evolution | Internet Encyclopedia of Philosophy - December 9th, 2016 [December 9th, 2016]
- Evolution - Bulbapedia, the community-driven Pokmon encyclopedia - December 12th, 2016 [December 12th, 2016]
- What is Evolution - explanation and definitions - December 21st, 2016 [December 21st, 2016]
- Evolution (2001 film) - Wikipedia - January 28th, 2017 [January 28th, 2017]
- EvolutionM.net - Mitsubishi Lancer Evolution | Reviews, News ... - February 1st, 2017 [February 1st, 2017]
- YMCA evolution continues at lake - Gaston Gazette - February 7th, 2017 [February 7th, 2017]
- Ivanka Trump's Beauty Evolution, From 1998 to Today Watch - Us Weekly - February 7th, 2017 [February 7th, 2017]
- Lumpy, hairy, toe-like fossil could reveal the evolution of molluscs - The Guardian - February 7th, 2017 [February 7th, 2017]
- How Evolution Alters Biological Invasions - ScienceBlog.com (blog) - February 7th, 2017 [February 7th, 2017]
- Cultural evolution and the mutilation of women - The Economist - February 7th, 2017 [February 7th, 2017]
- Late-night hosts on the evolution of Trump: 'Dickish to dictatorish' - The Guardian - February 7th, 2017 [February 7th, 2017]
- Gold's Gym Regina rebrands to become Evolution Fitness - Regina Leader-Post - February 7th, 2017 [February 7th, 2017]
- Incremental Versus Radical Innovation: A Response to Josh Swamidass on Evolution and Cancer - Discovery Institute - February 7th, 2017 [February 7th, 2017]
- Blockchain: Investment (R)Evolution For Developing Markets - Forbes - February 7th, 2017 [February 7th, 2017]
- See the Evolution of the Famed Porsche 911 in 7 Photos - WIRED - February 7th, 2017 [February 7th, 2017]
- Exhibition charts 500 years of evolution of robots - Phys.Org - February 7th, 2017 [February 7th, 2017]
- How evolution turned ordinary plants into ravenous meat-eaters - Wired.co.uk - February 7th, 2017 [February 7th, 2017]
- Are Evolution Fresh Drinks 'Poison'? - snopes.com - February 7th, 2017 [February 7th, 2017]
- Non-Chromosomal DNA Drives Tumor Evolution - The Scientist - February 8th, 2017 [February 8th, 2017]
- Chimpanzee feet allow scientists a new grasp on human foot evolution - Phys.Org - February 8th, 2017 [February 8th, 2017]
- 'Goldilocks' genes that tell the tale of human evolution hold clues to variety of diseases - Science Daily - February 8th, 2017 [February 8th, 2017]
- Pac-Man is Coming to 'The Sandbox Evolution' Next Week - Touch Arcade - February 9th, 2017 [February 9th, 2017]
- Chimpanzee feet allow scientists a new grasp on human foot ... - Science Daily - February 9th, 2017 [February 9th, 2017]
- Bacteria sleep, then rapidly evolve, to survive antibiotic treatments - Phys.Org - February 9th, 2017 [February 9th, 2017]
- Orangutan squeaks reveal language evolution, says study - BBC ... - BBC News - February 9th, 2017 [February 9th, 2017]
- Evolution gives rhyme its reason - Aurora News Register - February 9th, 2017 [February 9th, 2017]
- Deeper origin of gill evolution suggests 'active lifestyle' link in early vertebrates - Science Daily - February 9th, 2017 [February 9th, 2017]
- From Tara Palmer-Tomkinson to Cara Delevingne: the evolution of the It girl - The Guardian - February 10th, 2017 [February 10th, 2017]
- Banned TED Talk: Rupert Sheldrake The Science Delusion - Collective Evolution - February 10th, 2017 [February 10th, 2017]
- VOTD: Watch the Evolution of Keanu Reeves' Acting Career - /FILM - February 10th, 2017 [February 10th, 2017]
- Pokmon Go Eevee evolution: How to evolve Eevee into Vaporeon, Jolteon and Flareon with new names - Eurogamer.net - February 10th, 2017 [February 10th, 2017]
- Horse evolution bucks evolutionary theory - Science News - February 10th, 2017 [February 10th, 2017]
- Samsung's Chromebook Pro highlights the category's continued evolution - TechCrunch - February 10th, 2017 [February 10th, 2017]
- Scientists solve fish evolution mystery - Phys.Org - February 10th, 2017 [February 10th, 2017]
- Wildfire evolution forces Forest Service into new thinking - The Daily Progress - February 11th, 2017 [February 11th, 2017]
- How the horse can help us answer one of evolution's biggest questions - Raw Story - February 11th, 2017 [February 11th, 2017]
- A primer on Darwin Day: Some religious groups embrace 'Theistic evolution' - LancasterOnline - February 11th, 2017 [February 11th, 2017]
- Apple: Evolution of in-car audio tech moving at 'speed of sound ... - Times of India - February 11th, 2017 [February 11th, 2017]
- Mariska Hargitay's Evolution from '80s Glam to Law & Order: Special Victims Unit - TVOvermind - February 12th, 2017 [February 12th, 2017]
- Evolution of baseball from power to speed has left SBs behind ... - Chicago Sun-Times - February 12th, 2017 [February 12th, 2017]
- More order with less judgment: An optimal theory of the evolution of cooperation - Science Daily - February 12th, 2017 [February 12th, 2017]
- J. Albert C. Uy speaks on evolution, biodiversity in bellied flycatcher population - The College Reporter - February 12th, 2017 [February 12th, 2017]
- See the Evolution of Movie Magic With Every Oscar Winner for Visual Effects in History - Gizmodo - February 12th, 2017 [February 12th, 2017]
- Numerology: Here's What Your Name Says About You - Collective Evolution - February 13th, 2017 [February 13th, 2017]
- The Evolution of Valentine's Day - Inside Science News Service - February 13th, 2017 [February 13th, 2017]
- Why evolution may be tech billionaires' biggest enemy - The Week Magazine - February 13th, 2017 [February 13th, 2017]
- Community Viewpoint: Evolution, like gravity, is much more than theory it is a fact - Kdminer - February 13th, 2017 [February 13th, 2017]
- How the horse can help us answer one of evolution's biggest questions - Phys.Org - February 13th, 2017 [February 13th, 2017]
- How evolution alters biological invasions - Science Daily - February 13th, 2017 [February 13th, 2017]
- Cockeyed squid shines light on deep sea evolution - Christian Science Monitor - February 13th, 2017 [February 13th, 2017]
- Eye Evolution: A Closer Look - Discovery Institute - February 14th, 2017 [February 14th, 2017]
- Evolution always wins: University of Idaho video game uses mutating aliens to teach science concepts - The Spokesman-Review - February 14th, 2017 [February 14th, 2017]
- Geneticists track the evolution of parenting - Phys.Org - February 14th, 2017 [February 14th, 2017]
- How this cockeyed squid shines a light on deep sea evolution - Christian Science Monitor - February 14th, 2017 [February 14th, 2017]
- 4 Possible Roadmaps For macOS and iOS Evolution - The Mac Observer (blog) - February 15th, 2017 [February 15th, 2017]
- The Evolution of the Energy Capital of the World - Texas Monthly - February 15th, 2017 [February 15th, 2017]
- Humons presents an atypical dance evolution - Detroit Metro Times - February 15th, 2017 [February 15th, 2017]
- Pokemon Go Adds 80 Generation 2 Pokemon, New Evolution Items This Week - IGN - February 15th, 2017 [February 15th, 2017]
- Fossil discovery rewrites understanding of reproductive evolution ... - Science Daily - February 15th, 2017 [February 15th, 2017]
- 'X-Men: Evolution' Is the Gateway Drug of Comic Book Shows - Geek - February 16th, 2017 [February 16th, 2017]
- A cultural catch: Evolution of wooden halibut hooks carved by native ... - Science Daily - February 16th, 2017 [February 16th, 2017]
- Bremerton's Fitness Evolution now Planet Fitness - Kitsap Sun (blog) - February 16th, 2017 [February 16th, 2017]
- Eye Evolution: The Waiting Is the Hardest Part - Discovery Institute - February 16th, 2017 [February 16th, 2017]
- Evolution Of The Yeezy: 2009-2017 - HotNewHipHop - February 16th, 2017 [February 16th, 2017]
- Prebiotic evolution: Hairpins help each other out - Science Daily - February 16th, 2017 [February 16th, 2017]
- This 'Live Birth' Fossil Could Change Humanity's Understanding Of Evolution - Daily Caller - February 16th, 2017 [February 16th, 2017]
- Mysterious Ancient Stonehenge-Like Circles Found in Amazon Rainforest - Collective Evolution - February 16th, 2017 [February 16th, 2017]
- 'Pokemon Go': How to Evolve Poliwhirl Into Politoed - Heavy.com - February 17th, 2017 [February 17th, 2017]
- 'Pokemon Go': How to Evolve Slowpoke Into Slowbro or Slowking - Heavy.com - February 17th, 2017 [February 17th, 2017]
- 'Pokemon Go': How to Evolve Gloom Into Bellossom - Heavy.com - February 17th, 2017 [February 17th, 2017]
- Pokmon Go Dragon Scale - how to evolve Seadra into Kingdra and how to get the Dragon Scale - Eurogamer.net - February 17th, 2017 [February 17th, 2017]
- Pokmon Go Eevee evolution: How to evolve Eevee into Umbreon, Espeon, Vaporeon, Jolteon and Flareon with new ... - Eurogamer.net - February 17th, 2017 [February 17th, 2017]
- University of Pittsburgh guest speaker discloses evolution findings - UTA The Shorthorn - February 17th, 2017 [February 17th, 2017]
- 'Pokemon Go' Special Items: Drop Rates for Evolution Items & Berries at Pokestops - Heavy.com - February 17th, 2017 [February 17th, 2017]
- How Vedic Philosophy Influenced Nikola Tesla's Idea of 'Free Energy' - Collective Evolution - February 18th, 2017 [February 18th, 2017]
- Migration to America took long enough for evolution to happen on the way - Ars Technica - February 18th, 2017 [February 18th, 2017]
- How To Choose Your Eevee Evolution In 'Pokmon GO:' Umbreon And Espeon Edition - Forbes - February 18th, 2017 [February 18th, 2017]
- Evolution Items - IGN - February 18th, 2017 [February 18th, 2017]
- Congo River fish evolution shaped by intense rapids: Genomic study ... - Science Daily - February 18th, 2017 [February 18th, 2017]
- Pokmon Go - How to evolve, use Special Items, when to evolve or Power Up your Pokmon - Eurogamer.net - February 18th, 2017 [February 18th, 2017]