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Blockchain changed how value flows through systems and how value is captured. Joel Monegro coined the term ‘Fat Protocols’ in his landmark article, where he compared the opportunity for value capture on the Web with the opportunity for value capture with Bitcoin. James Kilroe added to this framework with his analysis of value flow and opportunity for value capture with a model he calls ‘Application Protocols.’ Jake Brukhman brought nuance to the conversation with his criticism that the divide between application layer and protocol layer can be drawn at any level in the stack. Although Brukhmans criticism is valid, for the purposes of evaluation, we believe the terms ‘application layer’ and ‘protocol layer’ have been accepted as part of the common lexicon for these ideas and are useful for this discussion. We agree with Brukhman that the idea of value pooling in base protocols is a misapplication of Monegro’s modeling of value networks and that what is important is how the value flows through the layers of the functionality stack. We propose an additional value capture model called ‘Salutary Protocols,’ wherein the boundary between application and protocol layers is determined by the divide between subjective and objective kinds of work - the application layer performs subjective work, the protocol layer performs objective work and both capture value based on how competitive they are. In a Salutary Protocol system, the protocol layer drives some of the value that it facilitates to the application layer, creating financial incentive for developing competing applications. Salutary Protocols add value to the application layer while supporting the network effects of the protocol layer. This is possible because blockchains are effective at capturing value at the protocol layer. Salutary protocols are sustainable because it is in the best interest of all participants to contribute to updating, securing, and expanding the infrastructure of the protocol layer.
In this discussion, we review the basic frameworks discussed by Monegro, Kilroe, Brukhman and others, and analyse the new value capture model we call Salutary Protocols.
|“||The previous generation of shared protocols (TCP/IP, HTTP, SMTP, etc.) produced immeasurable amounts of value, but most of it got captured and re-aggregated on top at the applications layer, largely in the form of data (think Google, Facebook and so on). The Internet stack, in terms of how value is distributed, is composed of "thin" protocols and "fat" applications. As the market developed, we learned that investing in applications produced high returns whereas investing directly in protocol technologies generally produced low returns. This relationship between protocols and applications is reversed in the blockchain application stack. Value concentrates at the shared protocol layer and only a fraction of that value is distributed along at the applications layer. It's a stack with "fat" protocols and "thin" applications.||”|
|— Joel Monegro, Fat Protocols|
TCP/IP and HTTP/World Wide Web are thin protocols because all of the value (often in the form of data - ie Google, Facebook, but in some cases as a percentage of financial transactions - ie PayPal, Netflix, Amazon) is captured at the application layer and none is captured at the protocol layer.
The World Wide Web is comprised of walled-garden applications because of its thin protocol model. Although the Web offers no method for value capture at the protocol layer, it offers enough standardization and capability to have strong network effects.The World Wide Web is the best example of the importance of competition at the application layer -- one protocol with more than a billion applications on it.
Bitcoin is an example of a fat protocol because the majority of value capture happens in the protocol layer by miners, and the application layer can only capture value by offering additional services beyond the protocol functionality. Fat protocols offer no direct incentive for the developer community to create application layer products and services, thus options at the application layer may lack of competitive options for users
Fat protocols threaten to perpetuate the walled-garden problem and may make it worse - the potential for severe long-term consolidation at the application layer in the fat protocol model, could in turn compromise the integrity of the underlying protocol. The economics of the system are fragile.
|“||...Relying purely on the medium-of-exchange argument to support a token value, while attractive because of its seeming ability to print money out of thin air, is ultimately quite brittle. Protocol tokens using this model may well be sustained for some time due to irrationality and temporary equilibria where the implicit cost of holding the token is zero, but it is a kind of model which always has an unavoidable risk of collapsing at any time.||”|
|— Vitalik Buterin, On Medium-of-Exchange Token Valuations|
Further, commoditization will drive the price down over time. Blockchain protocol tokens can be used to buy fungible commodities for Storage/distro as a Service, Processing as a Service and Security as a Service. The combined properties of forking and interoperability will lead to the commodification of these services, which in turn will drive the price of these down over the long term and could substantially change the market dynamics.
|“||I’d like to propose that while these protocols in aggregate will continue to capture most of the value, individual protocols will in fact be quite thin and tend towards capturing minimal value, due to the combined effects of forking and competitive market forces.||”|
|— Teemu Paivinen, Thin Protocols|
Finally, projects that have raised money to fund development with the Fat Protocols model are vulnerable to instability because they are threatened by short convexity. In her article ‘Short Convexity,’ Jill Carlson explains the system design and economic incentive structures that result in short convexity and the potential ramifications for this method of fundraising. Carlson explains that the potential problem of fundraising in a Fat Protocol model is that the company is holding the tokens they are dependant upon for cash flow, so if they need to sell tokens when the market is low they are faced with the double edged sword of having to sell at a low and may drive the price down further by selling the tokens.
‘Application protocols’ apply a set of standards to a use case and have tokens that are unique to the Application Protocol, but they also use base layer protocols with tokens for various functions. James Kilroe used aggregation theory in his analysis of Application Protocols to show how value will move toward the most interoperable systems because integrating multiple verticles will increase overall value capture.
Kilroe identifies the primary connection for the end user is to the platform they use. The Application Protocol model enforces this connection by requiring end users to use the Application Protocol token, similar to the way one must use tickets at an amusement park. The incentive design in this model is that end users will share in the value captured by the economy through owning the tokens and the assumption is that this will incentivize them to share and grow the system.
Although this incentive model may work short term, it is not an effective long term strategy. At scale, end users will not care which tokens they hold. End users will hold whichever reserve currency they prefer and will pay for services that require unique tokens by automatically swapping their reserve currency tokens for whatever is needed for the transaction. The market will move toward systems that offer the most interoperability and specifications like Lightning Network and Cross Chain Atomic Trades will make trades immediate. The inherent weakness in the economic incentive design of this model is similar to the ‘Fat Protocols’ model because it creates fragility of the Application Protocol token price.
Further, this approach replicates the current problems of the walled-garden model. We agree with Kilroe that platforms should serve end users, however and essential component of the crypto-economic design at scale is missing -- the incentive for competitive user-facing applications.
Instead of the platform enforcing its connection with the user via required tokens, the platform should get market-based feedback from its users. The necessity of competition at the application layer has often been overlooked in these discussions, for example Kilroe calls applications “glorified UX.” Protocols that have only one application built upon them are weaker and more fragile than protocols that have many, and incentive for competition at the application layer is the key differentiating factor.
We propose a Salutary Protocol model in which the specification creates opportunity for value capture at both the application and protocol layers.
Salutary protocol systems maximize efficiency by separating subjective and objective work and empowering the marketplace of users to define their own unique combinations of services and pricing.
Service providers of subjective kinds of work, like user experience, content discovery, and filtering lists capture the value assigned to the application layer by users. Application layer services compete based on features that are important to their users. The marketplace can serve the full range of user demand with a spectrum of options for products, services, price points, interface preferences, quality compared with price and transaction confirmation duration, etc.
Objective work like index security, transaction confirmation, and file storage capture value at the protocol layer via blockchain tokens. The tokens function as fungible commodities that represent these services. As Kilroe & others have suggested, it is likely that over time commodification will drive down the market price of these services.
|“|| Eventually blockchains will solve scalability and you’ll be able to use any of them. Since it hasn’t happened yet, we don’t know when or how this will happen. If it does happen, much of the value will accrue to that scalable chain in the short-term. But eventually other chains will figure out better ways of doing it, there will be a copious supply, and it will become commoditized.
Or perhaps millions of chains will exist and scalability occurs through the interoperability of those chains. Either way, the supply of computational power will force prices down to a commodity level. When these foundational elements begin to become a commodity, all that value will begin to accrue up the stack, just like it did in the Dot Com era and in the web2.0 era.
|— Evan Van Ness, There’s no such thing as ‘fat protocols’|
Interoperable base layer protocols will function as fungible commodities and be used for objective work; the market for these services will flatten and compete toward maximum efficiency.
Applications compete based on subjective qualities that matter to end users such as user interface, content discovery and filtering.
Salutary protocols leverage the benefits of interoperable base layer protocols and create financial incentive for application interfaces to compete for end users.
Thin protocols do not capture value. Without the ability to collect fees at the protocol layer, thin protocols have no direct financial incentive. Organizations like the W3C that are responsible for maintenance and future development of thin protocols are limited to non-profit funding models like member dues, research grants, private sponsorship and donations. Products and services built on thin protocols can only capture value at the application layer and their value capture methods have many problems -- broadly, limited transparency and subvert data theft.
Example A: When a video is viewed on YouTube, the base level protocols that make it possible do not capture value (TCP/IP, HTTP, YouTube’s internal proprietary protocols). Youtube’s application layer services maintain end to end control of the content and captures all potential value in the form of advertising revenue and user data. The application layer must add value beyond the protocol function.
Example B: When a party to party payment is facilitated by PayPal, the base level protocols that make it possible do not capture value, they only host the interface with which the parties interact. The transfer of value is controlled by a combination of proprietary user accounts, network effects between users who need the service & paypals relationships with banks. As such, the protocols involved capture no value, PayPal is the only party which can capture any of it, and it splits some of that value with its banking partners.
Fat Protocols value capture opportunity is almost entirely at the protocol layer. In this model the protocol layer captures most of the value. In the Bitcoin network the majority of value is captured by miners in the form of tx-fees and the temporary subsidy of block-rewards. Application layer value capture in the Fat Protocol model can only occur with value-add services beyond the function of the protocol. Application layer products and services are competing toward zero margins because the protocol layer can serve its primary function without the optional value-ad services offered by the application layer. Thus, opportunity for value capture from application layer fees is very small because of the potential for competing services that cost less or are free.
Example 1: When a party (A) to party (B) payment is facilitated by Coinbase, the Bitcoin protocol is what is facilitating the value transfer. When it happens, a protocol worker (a POW miner) is the only party that can capture a portion of the value, in the form of a tx-fee which could range from fractions of a penny to a few cents (to a few dollars in uncommon circumstances). Coinbase has no opportunity to capture any of this value.
Party A sends $100 in BTC to Party B. Protocol worker C captures ~$0.01 from it, and ~$99.99 is delivered to Party B.
Example 2: However, if the sending party doesn’t yet have Bitcoin, Coinbase can offer the service of exchanging fiat money from their bank account to Bitcoin. Because this requires banking relationships and regulation compliance they have some exclusivity over the service, which lets them charge a fee similar to the fee that most merchants are charged for processing credit or debit cards, 1.5%.
Party A pays $101.50 on their debit card to send $100 in BTC from Coinbase to send to Party B. Coinbase captures $1.50 for the conversion, Protocol worker C captures $0.01, and $99.99 is delivered to Party B.
Application Protocols have the same fundamental economic design as fat protocols. They don’t have workers which capture a portion of the value they are facilitating - they facilitate one service, workers are paid 100% of fees to provide it, but the fees must be paid IN the token. As such application protocols don’t allow the application layer to capture value by providing a service. The only way for a person to “invest” in an application protocol, or earn any revenue with it, is to speculate on the underlying token itself. The weakness of this approach is that its based on the underlying assumption that end users will buy and hold tokens based on the services they can pay for with those tokens. In reality, however, users will gravitate toward holding one or few “reserve” tokens, and then use live-exchange services to buy the tokens they need for various applications at the time they want the service. This completely undermines the value proposition of application protocols.
Theory relies on users holding Application Protocol tokens to use the application. This will hold true for only a limited period of time until the reserve token takes over, and then token value will depend entirely on velocity. There is not a standard
Salutary Protocols capture value at both the application and protocol layer. In this model, value is captured for subjective work at the application layer, and objective work at the protocol layer. The application layer fees are part of the total transaction amount.
Example: Party A sends some value to Party B, Party C is an optional participant offering some subjective service to make the transfer go smoother, and Party D is at the protocol-layer doing the objective work that A, B and C all depend on.
Party A spends some amount (consumer of content or coffee) Party B gets the lion’s share of it (creator of content or coffee) Party C gets a fee if it helped move things along efficiently (content platform or LN channel) Party D gets a fee for ensuring the whole system is running (bitcoin miner or bitcoin miner)
How OIP uses the salutary model
OIP creates competition at the application layer for platforms and influencers and at the protocol layer for miners and other service providers.
The specific steps of OIP’s salutary model
- Publisher creates commercial artifact & pays system fee
- Index miner wins block with artifact and receives publisher’s fee in addition to block-reward
- Platform hosts & displays artifact
- Influencers promote artifact via social media
- End user discovers artifact promoted by influencer and purchases it thru platform
- Payment received from end user is automatically split to publisher, platform and influencer based on split amounts listed in artifact
When a publisher creates an artifact in OIP, they state the amount of value capture opportunity available to parties who distribute or promote their content. The value assigned by the publisher of the artifact is then captured by application layer product and service providers like platforms and influencers. Application layer revenue is performance based. The opportunity for value capture in the system is transparent and explicit, and the method to participate increases interoperability and reduces backend work.
FLO blockchain miners and file storage/distro miners capture value at the protocol layer. In addition to the block-reward, FLO miners capture value from fees paid by publishers. All artifacts published to the system require a fee. Free artifacts require only the cost of putting the data into the blockchain which is so low it could be considered trivial. The fee for commercial artifacts is derived from the commercial value of the content itself. These fees balance the relationship between the security of the system with the value of the artifacts in the system. The effect is similar to the sink (fee) advocated by Vitalik Buterin because the fees are transparent and explicit and increase the stability of the system.(citation)
The interdependent structure of OIP’s salutary model has market pressures from all stakeholders. Alignment of incentives through an open market with closed loop fees is the key to the system’s potential for antifragile growth and long term sustainability.
Example using OIP: Party A publishes some valuable content using Open Index Protocol. Because there is a $1 price tag on the piece of content, Party A spends $1 in FLO tokens as the publish fee. Party B (protocol layer) is the FLO blockchain miner which verifies the block with this piece of content in it. Party C is an end user who wishes to pay Party A $1 to watch the content. Party D, a platform (application layer), hosts the application which Party B used to enjoy the content. Party E, a bitcoin miner (protocol layer), verifies the transaction sent to Party A.
In this example, this is how the splits will result: Party A will spend a 1-time fee of $1 in FLO to share the piece of content, and Party B will capture it. Party C will spend $1 to enjoy the content, of which, Party D will capture $0.20, Party E will capture about ~$0.01 of it, and Party A will receive the remainder of the $1, about $0.79.
How Lightning Network uses the salutary model
Lightning network creates incentive for competition at the application layer between channel operators. Channel operators will compete to serve different parts of the market by offering a variety of options like settlement reliability, blockchain settlement frequency, transaction amount size and channel operator fee. Channel operators can also function as market makers and bridge funds if transaction completion is delayed by a node going offline.
Example: User opens a channel with a $100 deposit and uses it for small daily purchases with once per month settlement. User spends a few dollars each day for coffee and spends the full amount over the course of the month. Based on the terms of the channel, a small percent will go to the channel relays as fees and the majority will go to the coffee shop. The total amount spent is $100.
Party A is end user with a budget of $100 per month for coffee Party B is his favorite coffee shop Party C are the relay nodes in the LN channels he uses
Party A gets coffee, Party B gets the lion’s share of the money, ~$99, and Party C gets a tiny sliver of the money for facilitating the transactions, ~$1.