Medium as Message
A Case for Blockchain as an Art Medium
Eva Gentner
Dissertation
Master of Studies in History of Art and Visual Culture,
Trinity Term 2022
University of Oxford
1
Abstract
NFTs, their aesthetic and artistic value, as well as their high-priced sales, have been the
subject of various controversial discussions since the beginning of 2021. However, the ongoing
debate is mainly focused on NFTs as collectibles and does not include the role and potential of
the blockchain itself as a profound part of artistic practice. In my dissertation, I argue that
blockchain represents a new medium for art which, like every other art medium, influences
how its art is constituted, produced, perceived, and consumed. In concordance with its medium,
blockchain art is, as I will demonstrate, inherently programmable and decentralised. Firstly, I
will expound the idea and basic concepts of blockchain technology. Secondly, blockchain art
will be placed in an art-historical context, revealing the continuation and resumption of certain
pre-existing issues and questions of twentieth-century and contemporary artistic practice.
Thirdly, I will distinguish between examples where blockchain technology is used as a means
for dissemination, and artworks where the blockchain is specifically addressed, applied, and
leveraged as an inherent part of the artistic concept, constituting the art form: blockchain art.
Lastly, I will argue that this art form represents and exemplifies the democratic nature of its
underlying technology, mediating the vision of decentralisation, an alternative to current
societal structures. These observations and conclusions are made possible through an
introduction, discussion, and analysis of examples of blockchain art.
2
Contents
On blockchain technology and art.......................................................................................... 3
Contextualising blockchain art ............................................................................................. 12
Blockchain art and its constitution ....................................................................................... 22
Mediating a vision .................................................................................................................. 31
Bibliography ............................................................................................................................ 40
Acknowledgements .................................................................................................................. 44
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On blockchain technology and art
Art can enact change. Blockchain is a technology that has been introduced to bring change
to the financial system, shifting power from singular instances to a decentralised network of
peers. The blockchain is also a medium for art. Since the beginning of 2021, the profusion of
NFT production and high-priced sales have led to controversy in public discourses, ranging
from admiration to astonishment and contempt.
1
However, ongoing debates are mainly focused
on NFTs as collectibles. The intensity of their commercial success has eclipsed the aesthetic,
creative and social merits of other types of art-making related to blockchains, therefore
disregarding the role and potential of the medium itself as a profound constituent of artistic
practice. In my dissertation, I argue that blockchain represents a medium for the novel art form
blockchain art. I focus attention on the constitution of this art form which, as I will demonstrate,
reflects on and, is determined by, the intrinsically programmable and decentralised nature of
its medium.
NFTs, and their influence on artistic practice, are novel occurrences and academic research,
touching upon aesthetic, conceptual, or philosophical considerations, has not yet been
comprehensively conducted.
2
Therefore, this dissertation is intended to provide a first
introduction to blockchain art, and to blockchain as a medium for art. I have identified four
main questions, covering different perspectives on how these phenomena can be assessed.
Firstly, I will ask about the principles of blockchain technology and how they are, under certain
circumstances, related to artistic production. Secondly, questions are raised as to how
blockchain art resumes issues of the twentieth-, and early twenty-first-century art historical
context. Thirdly, with respect to other creative productions relying on blockchain technology,
I outline the characteristics of blockchain art. The concluding chapter is focused on the
relevance of this art form as a phenomenon of the present. The overarching goal of this
1
Various sensational headlines represent the ongoing public discussion: ‘Are NFTs really art?’
https://www.theguardian.com/technology/2022/mar/14/are-nfts-really-art (20 May 2022); ‘“I went from having
to borrow money to making $4m in a “day”: how NFTs are shaking up the art world’
https://www.theguardian.com/artanddesign/2021/nov/06/how-nfts-non-fungible-tokens-are-shaking-up-the-art-
world (20 May 2022).
2
Catlow et al. published a work comprising artistic and theoretical contributions about the intersection between
blockchains and art in general. It has been published prior to the introduction of NFTs and, consequently, the
blockchain as a medium for art is not discussed. R. Catlow, et al. (eds), Artists Re:Thinking the Blockchain
(Liverpool 2017). Articles, reflecting on NFT use cases related to the art market, exist, often with an emphasis on
economic perspectives, for instance: D. MacDonald-Korth, et al., The Art Market 2.0: Blockchain and
Financialisaton in Visual Arts (Oxford Internet Institute and The Alan Turing Institute, 2018); B. Patrickson,
‘What Do Blockchain Technologies Imply for Digital Creative Industries?’, Creativity and Innovation
Management, 30/3 (2021), pp. 585–595; or A. Whitaker, ‘Art and Blockchain: A Primer, History, and Taxonomy
of Blockchain Use Cases in the Arts’, Artivate, 8/2 (2019), pp. 2146.
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dissertation is to introduce blockchain as an analytical subject, and in doing so, elucidate the
deeply entrenched relation between content and medium as constituents of the art form’s
meaning. Examples of blockchain art throughout this dissertation help to illustrate such
considerations and reveal how the envisioned change of blockchain technology is reflected by
the art itself.
Blockchain technology evokes a multiplicity of associations, ranging from technological
innovation and the hope for (global) democracy, to financial freedom, investment speculation,
and cyber criminality. NFTs and blockchain art are closely related to this discussion given their
dependence on the technology. Any appreciation of blockchain art requires an understanding
of its constituents, in particular, the structures and functions of blockchains, non-fungible
tokens (NFTs) and cryptocurrencies. Accordingly, the comprehension of these concepts
involves a multidisciplinary approach that includes engineering, computer and data science,
economics, and other fields depending on the depth of analysis. An isolated consideration of
aesthetics or art historical questions, therefore, appears impractical, and to some extent
irrelevant as the message is, as explored in this dissertation, also derived from the medium.
Concepts, correlations, and in particular the vision of blockchain, are not intuitively graspable
and, as a consequence, might appear untrustworthy. While the technology and its vision can
take on an immense complexity, it is not my intention, and also out of my scope, to describe
and analyse the multi-layered relation between all the parts of this system. Instead, I attempt to
convey its fundamental concepts, and the potential it offers to individual humans and societies.
Looking at the art that uses and thematises blockchains will make the technology itself more
accessible and show one example of how it can be used. In the following, I will explain some
of the basic technical principles and then transition to a first example of blockchain art which
combines technical premises with conceptual and aesthetic considerations.
The fundamental vision behind blockchain technology is decentralisation. Decentralisation
means the shift of power from one instance to a multitude of peers, which is, within the context
of blockchain technology, applied to a financial model. This seemingly simple and broad idea
entails wide-ranging consequences as it is supposed to increase transparency, efficiency, and
eventually equality within and across electronic systems of finance.
3
The basic idea of the
3
Blockchain technology was first described by Satoshi Nakamoto in the whitepaper Bitcoin: A Peer-to-Peer
Electronic Cash System in 2009. More information on blockchains in general can be found here: D. Tapscott and
A. Tapscott, Blockchain Revolution. How the Technology behind Bitcoin and other Cryptocurrencies Is Changing
the World (London, 2019); and A. Lewis, The Basics of Bitcoins and Blockchains. An Introduction to
Cryptocurrencies and the Technology that Powers Them (Coral Gables, 2021).
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technology can be broken down to three principles: (1) a distributed ledger system which (2)
creates a network to store data in a (3) trustworthy way. Firstly, a distributed ledger system
means that, instead of relying on a centralised instance that holds all decisive power, a network
is introduced where this power is distributed among a multitude of actors where, consequently,
no single instance possesses the majority of votes or shares. A centralised instance can be a
single person, like a judge, or institutions, such as universities or banks, whereas these bodies
are entitled to declare a certain matter as valid. Then, a ledger, for instance a record-keeping
book, is where verified records are stored. The most prominent example is offered by the
finance industry. Banks and financial services (centralised ledgers), for example HSBC or Visa,
verify account balances and transactions. Alternative models, in turn, rely on a distributed
ledger system where a consensus needs to be achieved in order to enact changes. In short,
traditional models require a middleman, or a trusted third party, whereas alternative models
skip this position and distribute the power over many peers. Secondly, a blockchain is nothing
else but a digital archive where data is stored. In the first instance, the technology was
developed to record transactions. However, it is arbitrary what kind of data it contains. Other
examples might comprise health data, certificates, or voting results. This information is utterly
sensitive, and granting safety and privacy has highest priority. In fact, this is the most delicate,
but also the decisive factor and leads to the third requirement: blockchains must be reliable and
secure. Faulty or manipulated data can lead to wrong account balances or transactions might
not be verified, which, in both cases, can have wide-ranging financial consequences.
None of the three aspects are new on their own; it is their combination that creates a novel,
immensely powerful, model. Yet comprehending its potential, especially considering the
involved risks, requires a brief comparison between decentralised and centralised models.
There are instances where centralised approaches undoubtedly offer the best solutions. For
example, a fire brigade or public transport system functions effectively with one expert body
taking on the responsibility to overlook and regulate those specific systems. However, in other
areas like politics, autocratic systems are vehemently criticised. We acknowledge the risks
related to centralised power that might lead to its abuse, to the preference of certain groups or
individuals, and consequently, discrimination towards others. Developed nations demand
democracy. Nevertheless, many parts of our societal structure are based on centralised
approaches. As shown, the financial system relies on banks and services; elections are run by
single bodies; also, the art market mostly relies on galleries and auction houses to conduct
sales. In case there is an issue related to the middlemen, or the mediating instance is problematic
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in some way, the entire system is affected and might collapse. Corruption is a serious issue
when it comes to elections as, for instance, the recent political climate in Venezuela over the
last several years has shown. Banks are among those institutions often criticised for their lack
of transparency. The art market, likewise, is dominated by price and value-determining
instances. In short, for many of these cases we have no other option than to simply trust certain
bodies and services, even if they may not be trustworthy. Such reliance on centralised entities
may even work to reinforce defective systems.
By removing power from a single instance towards a multitude of peers, a system becomes
more resistant against fraud. Compared to a one-party model, where the entire unit is spoiled
in cases where the centralised party becomes malicious, a democratically organised model
consisting of, for instance, ten parties, is considerably more securea malicious actor would
have to convince, at least, five other participants to achieve the majority of voting power.
Therefore, the more peers are involved, the more decentralised, democratic, and, most
importantly, the more secure the system becomes.
Indeed, there are various profound challenges, flaws, and problematic issues related to
blockchain technology which yet need to be resolved. The ecological footprint of certain
blockchains, especially Bitcoin, is unacceptably high due to a technical mechanism which
requires an immense amount of computing power. The shift towards an entirely digital payment
system requires high cyber-security standards, as funds might be irrevocably lost, which has
happened in the past. Even after more than a decade since the introduction of Bitcoin,
blockchain technologies only have a few real world applications due to the complexity of their
implementation into traditional environments. However, every technology comes with trade-
offs. These issues, amongst others, are well known and are being addressed by a spectrum of
newly emerging alternatives to Bitcoin. In my dissertation, I focus on the Cardano blockchain.
Cardano is environmentally friendly and significantly more sustainable as a so-called ‘proof-
Centralised (left) and distributed system (right). Visualisation: Marcel Nießner.
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of-stake’ protocol is used, which requires, compared to Bitcoin’s ‘proof-of-work’ mechanism
(mining), 17,800 times less energy.
4
Also, Cardano has been developed on the basis of
scientific research in the areas of cryptography, game theory, and more, which provides a
technically sustainable foundation.
5
It is essential to acknowledge that blockchain technology
does not equal blockchain or cryptocurrency. Introducing DendroRithms, an example of
blockchain art, will allow me to disentangle the relation between these entities, and expand on
other aspects, such as block production and in what terms the blockchain serves as a medium
for art.
DendroRithms is a digital art installation released as an NFT collection between February
and May 2022 by the artist duo MICK + WOUT. The term NFT is misleading and oftentimes
is used imprecisely. It is the acronym for ‘non-fungible token’ and means the proof of
ownership over a specific digital asset. These assets are attached to the NFT and might include
an image, an audio file, or even a degree certificate. Therefore, an NFT is neither the actual
artwork, nor necessarily related to art at all. This opens the question of how NFTs relate to
blockchains. As indicated, a blockchain essentially is a decentralised data repository. Its main
use case is to store transaction data of cryptocurrencies. Every blockchain operates its own
cryptocurrency; Ethereum’s token is called Ether, whereas Bitcoin is eponymous for both the
blockchain and currency. Singular units of a certain currency are called ‘fungible tokens’, as
opposed to ‘non-fungible tokens’. By analogy, a one-pound coin is a fungible token of the
currency British Pounds; it is interchangeable (fungible) with another Pound, or equally two
fifty-pence coins. Picasso’s Guernica, for example, is unique (non-fungible) as no identical
unit exists. Non-fungible entities, indeed, can be traded against a certain number of fungible
tokens. NFTs and cryptocurrencies are both digital assets while only NFTs are unique. It is
possible to store transaction data from fungible and non-fungible tokens on a blockchain, as
they are technically similar entities.
4
M. Platt, et al., ‘The Energy Footprint of Blockchain Consensus Mechanisms Beyond Proof-of-Work’
(unpublished paper, 2021, IEEE 21st International Conference on Software Quality, Reliability and Security
Companion QRS-C), p. 1139. The Linux Foundation has published a report on the carbon footprint of NFTs,
stating that ‘blockchain technology is not inherently bad for the environment; the consensus mechanism chosen
determines environmental and social impact’, and highlights Cardano as a favourable example. A. Majer, ‘The
Carbon Footprint of NFTs: Not All Blockchains Are Created Equal’, foreword by D. Barbosa (2022),
https://linuxfoundation.org/wp-content/uploads/LFResearch_HL_NFT_Report_22Apr22_FINAL.pdf (15 June
2022), p. 18. More information about the technical conception of both mechanisms can be found in
Tapscott/Tapscott,
pp. 3133.
5
All published academic research papers related to Cardano can be found here: ‘IOHK Library’
https://iohk.io/en/research/library/ (10 June 2022).
8
Now, DendroRithms is a collection of 839 pieces, where every instance has been minted as
an NFT. ‘Minting’ is the act of creating a digital asset that is attached to a record on the
blockchain. ‘Collection’, in the specific context of blockchain art, refers to the entirety of pieces
that belong to and constitute one work of art. Thus, the artwork consists of 839 individual
pieces, which are collectively owned by a multitude of people, as it is often the case for
blockchain art. The following link will open a webpage that shows multiple NFTs, each of
them containing one Dendro. Due to their digital nature, it is possible to present original works
of art, rather than facsimiles.
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DendroRithms
DendroRithms was conceptually and aesthetically inspired by dendrochronology, a
scientific method that allows the determination of the age of trees by analysing their growth
rings. In analogy to tree sections, a Dendro symbolises a conceptual cross section through the
blockchain as an organism, dissecting and visually representing its principles. Tree rings mark
the passing of years, and thus conceptually, visualise elapsing time. Blockchains disclose a
similar pattern: in periodic intervals, blocks are produced. A block is an artificial unit that
contains the records of all transactions made during a specific time period. Due to the consensus
mechanism, a block is only produced if the majority of network participants (>51%) validate
the contents of an entire block. As it is impractical to validate every single transaction on its
own, blocks were introduced to validate them in bundles. Once such an entity has been
validated, its contents are encrypted, hence the often used prefix crypto-, and it is no longer
possible to make changes. Immutability is a core principle of the technology as it assures the
secure storage of information.
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Every Dendro is created by an algorithm. An algorithm, also referred to as ‘code’, includes
a set of rules that processes certain values and, consequently, determines the visual output.
Therefore, the image of a Dendro is only one part of what constitutes the installation, assigning
6
By clicking on the linkit might take some time until all contents are loadedyou will see a digital wallet
which is the entity where assets are stored. Often, we have British Pounds, but also non-monetary items like
passport photographs in our physical wallet. The same applies to digital wallets. This example contains a certain
amount of ADA [], the cryptocurrency of Cardano, as well as NFTs. By clicking on a certain example, you will
see the artwork in detail, along with more information. This wallet is owned by the author.
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Network participants are people who run a server that contains all information of a blockchain and therefore
actively contribute to its maintenance and operation. Cardano, for instance, has more than 3,000 peers. Anyone
with an adequate technical understanding and infrastructure can contribute. Every blockchain has its own protocol
with varying operational models. More information on consensus mechanisms and immutability can be found
here: Tapscott/Tapscott, pp. 3033; or Lewis, pp. 331333.
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the code with equal relevance.
8
This duality of an invisibly operating algorithm, containing all
required information, and its visible product, be it an image, application or website, which
people mainly interact with, is fundamental in software engineering in general and reflects how
blockchains are constituted. It also reveals the difference between blockchain and blockchain
technology. The latter reflects all rules and requirements which are transcribed to lines of code.
A blockchain, consequently, is the actual product that is in use. Even though it is this entity,
which is present and tangible, it would not exist without its underlying algorithm. This applies
to commercial products as much as to algorithmically generated art.
DendroRithms is an interactive work. The collection’s composition required input from
every person who bought a Dendro and individual choices are reflected in each piece, as well
as the entire collection. Buyers were presented with two choices. Firstly, one could choose a
colour from a selection whereas every colour forms an independent sub-collection, or rather
sub-chain, of the overall project. Secondly, one had to decide whether a core should be added
or not. This decision was always related to the previous piece that had been created as part of
this chain; if there were three existing cores, one could choose between a piece with either three
or four cores. If a buyer refused to add one, the piece would show the same number as the
previous one, or, after a predefined time, the number would decrease. As a result, Dendros of
the same colour form a linear chain where every newly added piece is tied to its predecessor.
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In tree sections, a core represents the starting point of growth and every year a new layer is
added. DendroRithms, as well as blockchains, also add new layers to an existing system,
visualising the continuous growth, sometimes interrupted by periods of depression, mirroring
the choices individuals made. The more people participate, contribute, and mint, the more cores
are added, and more variety occurs; or, metaphorically, the more distributed the network
becomes.
The interaction between a subject and a group is a main theme of DendroRithms. Each core
reminds of the sphere of influence of one individual, reflecting its position within an amalgam
of various players. When another player joins, the equilibrium is distorted and a new group
dynamic has to be established. In game theory, as well as actor network theory, these dynamics
are exploredboth theories are relevant for blockchain technology as they enable predictions
8
The algorithm can be found as part of a documentation: ‘Source code of DendroRithms’
https://github.com/wout/dendro/blob/main/dendro.cr (26 April 2022). The role of algorithms in artistic practice,
as well as generative art will be defined in the next chapter.
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If you return to the wallet, you will be able to see such a sub-chain of the colour naples yellow. Certain Dendros
are missing within this sequence, for example Dendro0778, which are in the possession of other holders. This
implies that sub-chains are owned by many people instead of a single person.
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about individual interactions with a network. The relation between individual and group, buyer
and sellers, and also between code and image, is designed by the artists, although some
variables always remain out of their control. For example, one part of the algorithm is a
randomness factor which influences the aesthetics of every piece and its details, such as the
exact position of the cores or the course of the lines. Working with probability and
predictability, again, is not only part of this artwork, but also a condition of blockchain design.
A Dendro represents a static snapshot of a moment in time. As is the case in photography,
every piece is a witness of one specific moment that ontologically belongs to the past right after
its creation. The depiction of, and oscillation between, reality and pastthe aesthetics of what
Roland Barthes called the that-has-been’
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correlates with the conception of blocks in a
blockchain. Each entry immutably represents an issue that has had its relevance at this specific
moment. In analogy to block production, where new blocks are enclosed to a continuous string
of preceding information, DendroRithms reflects the evolution of singular entities, strung
together in multiple linear sequences.
But in what terms can a blockchain be understood as a medium for art? When we make a
regular payment, it is possible to add further information to the payment slip, such as a
reference number or annotations. The same applies to NFTs: additional informationfor
example, text, links, or codecan be included in the metadata. The following link, referring to
Dendro0777, displays this:
10
R. Barthes, Camera Lucida. Reflections on Photography (London, 2000), pp. 76f.
DendroRithms sub-chain of the colour porcelain. Visualisation: Mateu Walker.
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Dendro0777: Code and Image
Parts of the algorithm and an image of Dendro0777 is stored in the metadata of this NFT.
As a result, the blockchain becomes the carrier of the artwork as the NFT comprises all parts
that constitute it. The NFT itselfthis must be emphasised againis generally solely the
certificate of ownership that refers to, or contains, an artwork, rather than being the artwork
itself. It would have been possible to only include the image of each Dendro and store its code
elsewhere, for example on a webserver or computer. Instead, MICK + WOUT decided to
include everything in the NFT, utilising the medium in a conceptual way, and also making the
code available to everyone. Open-
source code is, to some extent, a
necessity within the blockchain
industry as network operators are
required to have access to it. In
general, open-source stands for
transparency. Exactly because the
algorithm and information about
DendroRithms are public, people
are able to work with it and make
their own creations as the
visualisation of Dendro sales data shows.
DendroRithms symbolises the growth of a living organism, utilising methods of
programming while the collection is collectively owned by a multitude of individuals. It
reflects on the blockchain as an entity that requires shared efforts to keep it alive, that tracks
and mirrors every single interaction with it, and is kept in constant change and growth.
Blockchain technology envisions the evolution of a global, inclusive and participatory network,
providing a trusted infrastructure based on security and transparency, while remaining
completely digital, online and encoded. DendroRithms enables a visual experience of some of
the inherently non-visual principles and conditions related to blockchains, recreating
interactive and tangible chains of artworks, using the blockchain itself as a medium.
Timeline of DendroRithms sales sorted by colour. Visualisation:
Vanoz.
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Contextualising blockchain art
Blockchain art must be understood as the continuation and consequence of twentieth and
early twenty-first century events, rather than as an unprecedented and isolated occurrence.
NFTs primarily offer a new way of disseminating artwork and other information in digital
environments. However, as DendroRithms has shown, the technology induces conceptual
experimentation with the medium itself. Thus far, I have demonstrated some of the basic
principles of blockchains, implicitly outlining the dual constitution of meaning in art, derived
from its content and medium. Also, I have used the term ‘blockchain art’ to describe art that
uses, and reflects on, the blockchain as its medium. By introducing a second artwork, which
discloses these features of blockchain art and, thus, qualifies it as a representative of this
artform, I will explain in what terms blockchain art can be considered as another link in a
continuous string of art movements, idea history, and technological advances. Intersections and
differences will be presented between blockchain art and other art forms, such as mass art,
which is specified by formal qualities, and art movements that are driven by a conceptual
definition, such as abstract and especially generative art.
unsigned_algorithms is created by Alexander Watanabe, a former architect with a broad
spectrum of interests in parametric architectural design, photography, and programming, all of
which are reflected in this artwork. The artwork consists of 31,119 unique pieces, in short
unsigs, which were created by means of programming and minting NFTs on the Cardano
blockchain. The collection represents an abstract colour study of the RGB colour model; the
digital equivalent to traditional (analogue) colour theory. Unlike models that are based on the
subtraction of colours from natural white light, occurring when colour pigments (paint) are
mixed, the RGB model is additive, using the light emission of screens. The base colours red,
green and blue are used to create the entire colour spectrum. As opposed to subtractive models,
white light is generated when blending equal parts of all three base colours.
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unsigned_algorithms
11
The following wallet belongs to Grancho. As these artworks thematise colour as a phenomenon, the resolution
of your screen will influence the quality of the visual experience. The higher the resolution, the better will unsigs
be represented. I recommend choosing one specific piece, for example unsig09453, and open it in full screen mode
(rectangle above image).
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Every unsig exhibits a unique combination of colour gradients, with certain patterns
constituting their base structure. In analogy to a prism that breaks light into its full spectrum of
different wavelengths, the colour gradients of unsigs are modelled by these patterns which
define how the gradients blend into each other. As a result, some pieces reveal a single linear
gradient, others consist of iterations of the same gradient, following different curves, and again
others are a complex assembly of various patterns with different orientations. The plethora of
mixing options provided by the RGB colour wheel is explored, not only showing the gradual
and soft transition of base and mixed colours, but also the effects that strong contrasts provoke.
unsigned_algorithms grapples with the intensity and brightness of colour as a digital
phenomenon, the consequence of additive light mixing. It enables spectators to experience the
effects of digital colour diversity on the visual perception.
In 1940, Clement Greenberg characterised abstract art as a phenomenon of ‘historical
justification’ and explained the emphasis on immersive size, colour, basic forms, and flatness
in painting as a logical consequence and premise of the canvas as medium.
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Main figures in
abstract painting, like Mark Rothko or Barnett Newman, aimed to evoke a metaphysical
experience through the encounter of the spectator with large-scale colour fields. By choosing
an abstract style for his artwork, Watanabe transferred some of these conditionscolour,
abstract forms, and flatnessinto a digital environment. Due to the limitations of a non-
analogous medium, resulting in rather small display options depending on the dimensions of
the monitor, extraordinary image sizes could not be used as a way to induce a reaction in the
spectator. Instead, Watanabe leveraged the remarkably high colour intensity and brilliance of
the digital environment to evoke an immersive effect. A study implies the repetitive assessment
of a certain phenomenon. Rothko’s and Newman’s body of work reveal a continuous
exploration of colour. Watanabe brought this exploration of colour to a different medium by
using other techniques, resulting in a study that would not have been possible to create with
12
C. Greenberg, ‘Towards a Newer Laocoon’ (1940), in Ch. Harrison and P. Wood (eds), Art in Theory
19002000. An Anthology of Changing Ideas (Malden/Oxford, 2003), p. 567.
Alexander Watanabe, unsig00238, detail, 16k png, minted as NFT on Cardano, 2021.
14
analogue measures. However, it becomes evident that such a digital environment creates
fundamentally different premises, resulting in works which equally adopt and break with the
tradition. The emotional response to the exposure of colour in a digital, as well as an analogue,
context, eventually, always remains a subjective experience.
With the advance of internet technology and digitisation, a wave of new technologies and
media were introduced to art practice, inherently influencing the art itself. Blockchain
technology appears to be yet another occurrence amongst others. The debate of the past century
has been shaped by Walter Benjamin’s view on the reproducibility of art, as well as Marshal
McLuhan’s advocacy of the importance of the medium itself, both influencing the intellectual
perception of (mass) media.
13
Greenberg’s dismissal of mass art as a form of kitsch in 1939
raised questions about differences in the qualities of art and mass culture.
14
The debate became
even more present with the wide adoption of television shows, cartoons, or comic books in the
past seventy years. It led to an academic sentiment which is rather hesitant towards mass art
because, according to Noël Carroll, in order to be accessible for a wide audience with varying
backgrounds, the level of complexity would need to be reduced.
15
Following Carroll’s
definition of mass art as art, which is created for mass production, mass consumption and
distribution, and made by means of mass technology,
16
NFTs, in most cases, must be
considered as mass media. The introduction of NFTs, as indicated at the beginning of this
dissertation, created a public response, either hyping or downplaying the ongoing events, which
is comparable to the emergence of mass media some decades ago. Carroll critiques the
‘distinction between so-called high art and popular art [… which] serves to mark off an élite
class from, presumably, everyone else’.
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I follow his stance as the definition of what is ‘high’
and ‘popular’ mostly remains subjective. Within every art form, the level of complexity, skill,
thought, and relevance varies. This applies to mass media and its productions whereas, as
shown, NFTs belong to as well.
During a panel discussion at the Museum of Contemporary Art in Toronto in May 2022,
titled The Medium is the Message: Cardano and Blockchain Art: The “Global Village” realized
through “on-chain” Digital Art, Watanabe’s artwork unsigned_algorithms was discussed in the
13
W. Benjamin, ‘The Work of Art in the Age of Mechanical Reproduction’ (1936), in Ch. Harrison and P. Wood
(eds), Art in Theory 19002000. An Anthology of Changing Ideas (Malden/Oxford, 2003), pp. 520527;
M. McLuhan and Q. Fiore, The Medium Is the Message, ed. J. Agel (London, 1967).
14
C. Greenberg, ‘Avant-Garde and Kitsch’ (1939), in Ch. Harrison and P. Wood (eds), Art in Theory 19002000.
An Anthology of Changing Ideas (Malden/Oxford, 2003), pp. 539549.
15
N. Carroll, A Philosophy of Mass Art (Oxford, 1998), p. 195.
16
Ibid., p. 196.
17
Ibid., p. 178.
15
light of McLuhan’s body of thought.
18
Unlike, for example, television shows, blockchain art
does not follow a one-to-many broadcasting pattern. Instead, and this is, in fact, what separates
NFTs to some extent from other mass media, blockchain technology relies on a peer-to-peer
network where potentially everyone with access to a computer and is well-versed with the
technology can communicate with everyone. This difference sustainably influences the
dynamics of the art market as artists have the chance to take on the entire responsibility for
their sales process. Nevertheless, having access to a global audience, instead of a local
community mostly dependant on galleries, brings other challenges, such as the requirement of
a certain technological and economic expertise.
Like DendroRithms, unsigned_algorithms is created by means of programming. Due to its
relevance for blockchain art, I will focus in more depth on this art form. Philip Galanter has
provided a definition of generative art which serves as the starting point for further
exploration:
19
Generative art refers to any art practice where the artist uses a system, such as a set of natural
language rules, a computer program, a machine, or other procedural invention, which is set into
motion with some degree of autonomy contributing to or resulting in a completed work of art.
It becomes evident that generative art is not limited to an art practice that involves
computer-based programming, as is the case within this context. In fact, generative art can
cover digital and analogue works. The complexity and extent of the basic principles is
presumably the reason why no synoptic work, neither on the entirety of generative art, nor on
generative art based on programming, has been published.
20
Attempts were made to introduce
a more specific taxonomy, covering sub-categories such as computer art, computer-generated
art, or interactive art.
21
However, as these attempts do not give any information on what such
a system, as described by Galanter, might look like, Alan Dorin et al. delivered a framework
for a better comprehension.
22
According to them, such a system consists of entities, ‘the
18
Creative Conversations: Blockchain Art and NFTs’ https://moca.ca/events/creative-conversations-blockchain-
art-and-nfts_panel-01/ (29 May 2022).
19
Ph. Galanter, ‘What is Generative Art? Complexity Theory as a Context for Art Theory’ (unpublished paper,
2003), http://www.philipgalanter.com/downloads/ga2003_paper.pdf (4 June 2022), p. 4.
20
A small number of monographs is available which focus on the practical aspects of programming to create
generative art. Theoretical considerations are only marginally covered, for instance, within introductory chapters,
as in M. Pearson, Generative Art. A Practical Guide Using Processing (Shelter Island, NY, 2011), pp. 110.
21
Boden/Edmonds have identified eleven categories in total. M. A. Boden and E. A. Edmonds, ‘What Is
Generative Art?’, Digital Creativity, 20/12 (2009), pp. 37f. Monographs exist that cover some of these sub-
categories, such as D. McIver Lopes, A Philosophy of Computer Art (Abingdon, 2010); or Ch. Paul, Digital Art,
3rd edn (London, 2015), pp. 124138.
22
A. Dorin et al., ‘A Framework for Understanding Generative Art’, Digital Creativity, 23/34 (2012),
pp. 239259.
16
subjects upon which a generative artwork’s processes act’;
23
then, processes, ‘the mechanisms
of change that occur within a generative system’.
24
Further they posit, environmental
interaction as the influence on the operational system, and, lastly, sensory outcomes as the
resulting artwork. In the following, I will use the term ‘programmatic art’ as an art form that
comprises, on one hand, an input (entities) and an algorithm (process), written by a human and
executed by a computer (!), and, on the other hand, the product of that algorithm (sensory
outcome) which can include, for instance, an image, audio, or text file. This simplified
definition is intended to specifically serve the purpose of this dissertation. I will use the term
‘programmatic art’ instead of ‘generative art’, as, for example, Galanter does, to emphasise the
programmability of the input, as well as the importance of the computing process itself. This,
in turn, reflects the characteristics of blockchains. In contrast, ‘generative art’ highlights the
(static) nature of the output.
Previously, only the sensory outcomes of unsigned_algorithms were discussed. However,
it is, as the artist emphasises, the input and the algorithm which constitute the ‘actual
artwork.
25
All unsigs were created by the same algorithm while differing input parameters are
responsible for the aesthetics of every piece. Simultaneously to the launch of the collection,
Watanabe published a documentation that explains how unsigs are generated.
26
It was compiled
especially for people who are not capable of reading code and, therefore, able to retrieve this
information from the algorithm itself. This highlights the importance of the underlying idea
and reveals that unsigs share some characteristics with conceptual art where the idea of an
artwork is (significantly) more relevant than its sensory representation. While a definition of
conceptual art oftentimes must remain vague due to the diversity of the artworks it seeks to
cover, parts of Sol LeWitt’s Paragraphs on Conceptual Art are well suited to characterise
Watanabe’s intentions: ‘When an artist uses a conceptual form of art, it means that all of the
23
A. Dorin et al., p. 8.
24
Ibid., p. 9.
25
‘What is Unsigned Algorithms? A chat with #Unsig founder Alex’, YouTube (uploaded 28 August 2021)
https://www.youtube.com/watch?v=tHe2WU7NQYg (18 June 2022), starting at 11:11, ‘The code is the “art”’.
26
‘Programmatic NFT. Exploring the medium of blockchain-based art, its potential and impact on art’
https://docs.google.com/presentation/d/1A2lA659QM0NdjkCi84itPaWpPxq7PDe7moruwJ8N0V0/edit#slide
=id.gd9d03af5fa_0_161 (20 May 2022).
Input (left), algorithm (middle), and sensory outcome (right).
Visualisation: Marcel Nießner.
17
planning and decisions are made beforehand and the execution is a perfunctionary affair. The
idea becomes a machine that makes the art’.
27
In this case, the algorithm is the idea.
As MICK + WOUT did it, inputs, algorithm, and resulting images were all placed in the
metadata of the NFT. In fact, this approach itself is an artistic statement. The metadata is meant
to store information about the asset that is contained. As this information eventually will be
stored in a block, the character space available in the metadata is highly limited to 16 kB. Every
artwork stored in the metadata, a so-called ‘on-chain’ works, has to comply with this limitation.
This restricts the possibilities of the artwork but it also leads to a conceptual interaction with
the medium. Watanabe was the first one on the Cardano blockchain who stored his artwork on-
chain.
28
To emphasise the relevance of this method, it must be mentioned that most works
simply include a link to an image on an external webserver where the digital asset is stored. In
other words, these works only engage marginally with the blockchain as their medium, using
it mainly as a means for dissemination. unsigned_algorithms is a direct critique of this
approach. Watanabe argues that ‘on-chain art is more than just a storage container for existing
forms, it can and should be its own medium to be explored’.
29
As the inputs, the code, and the
sensual output are included in the NFT, the blockchain effectively contains the message.
Everyone who has access to LeWitt’s instructions for his wall drawings has the possibility to
recreate the sensory representation of these instructions. The same applies to unsigs; it is
possible to recreate every image by individually executing the code.
30
Watanabe alludes to the
immutability of blockchains because, as long as Cardano exists, unsigned_algorithms is
immutable too as the information for every piece can be retrieved from its NFT. Conceptual
art often questions the definition of what constitutes an artwork. These questions reappear in
the context of programmatic art, and especially blockchain art, as such works include multiple
components whereas their roles in relation to each other are not necessarily clearly delineated.
27
S. LeWitt, ‘Paragraphs on Conceptual Art’ (1967), in Ch. Harrison and P. Wood (eds), Art in Theory
19002000. An Anthology of Changing Ideas (Malden/Oxford, 2003), p. 846. More information about the history
and spectrum of conceptual art can be found in T. Godfrey, Conceptual Art (London/New York, 1998), especially
pp. 416.
28
There were few examples on other blockchains before. But as NFT standards vary depending on the blockchain,
different solutions have to be developed mostly independently and Watanabe paved the way for future on-chain
art on Cardano. The limited space in the metadata is partially the reason for the multitude of pixelated NFT projects
as a reduced resolution leads to this aesthetic.
29
‘Programmatic NFT. Exploring the medium of blockchain-based art, its potential and impact on art’, p. 6.
30
Instructions on how to do so, even suitable for people without programming skills, can be found here:
alexanderwatanabe, ‘unsigned_algorithms’
https://github.com/alexanderwatanabe/unsigned_algorithms/blob/main/
unsig_gen.ipynb (19 June 2022).
18
unsig00000, the first piece in the collection, differs from every other unsig as it is the only
one that comprises the entire algorithm. Analysing the structure of it becomes relevant for a
holistic understanding of the artwork and the nature of programmatic art in general. As
indicated, varying input parameters define the specifications of every piece. Instead of writing
31,119 algorithms with minor differences, every unsig (except for unsig00000) solely contains
its individual parameters and a reference to this specific piece. Therefore, only unsig00000 is
complete in itself which makes this method highly efficient and technically elegant.
31
unsig00000: algorithm
unsig00000 constitutes the ‘negative’, or the ‘DNA’, of the rest of the collection. The piece
also visually differs as its sensory outcome, a black square, marks is the total absence of
coloura consequence of the absence of input parameters. Four of these parameters exist, each
containing different options (see visualisation below): (1) the distribution, a mathematic
function, defining the basic structure of the other parameters; (2) a multiplier, specifying the
number of iterations that are applied; (3) the rotation; and (4) colour, using the RGB model.
These parameters provide, in analogy to genetic code, the characteristics for layers. These
layers, in turn, are comparable to chromosomes, which eventually define specific traits. Every
unsig includes between zero and six of these layers (properties). In analogy to the RGB model,
which relies on the addition of colour, layers are stacked on top of each other and result in the
final image. Based on this setup, 50,063,860 different combinations are possible, whereof less
than one percent effectively has been selected as part of the collection. The algorithm, along
with the input parameters, spans a matrix of possible combinations where every unsig
represents the transformation of a possibility into an actual manifestation.
31
The following link will display the algorithm. The sensory outcome of unsig00000, a black square, can be
viewed here: ‘unsig00000’ https://pool.pm/0e14267a8020229adc0184dd25fa3174c3f7d6caadcb4425c70e7
c04.unsig00000 (19 June 2022). It is owned by @adaboy98669717.
19
Comprehending the basics of the algorithm, as it can be found in the metadata of
unsig00000 in the link above, not only discloses the simplicity of its constitution, but it also
reveals conceptual similarities to other building disciplines, especially to architecture. In a first
step, certain coding libraries are imported, which include all required references, similar to the
way architectural references are assembled prior to the actual design process. Then, by defining
the dimensions of the unsig, the space for the eventual image, or, metaphorically, the ground
for the building, is created and marked out. Thirdly, the input parameters, or the building
blocks, are imported. The most important part, however, is the modelling, where the parameters
are arranged: the distribution creates the basic structure, while the multiplier modifies this
structure again and defines its final shape. The rotation sets the orientation and colour is
applied. Or metaphorically: firstly, the structure is built, then additional elements like walls are
added which shape the building, and lastly, the finalised structure is embellished and painted.
In a final step, the algorithm projects the model onto the initially created space and exports the
image.
unsigned_algorithms cheat sheet. Every property (right) consists of a combination of all four parameters (left). unsigs
include between zero and six of these properties. Cheat sheet: Marcel Nießner.
20
The simplicity of the algorithm contrasts the complexity and abundance of possible visual
results that can be derived from it. Moreover, its particular constitution reveals the decisions
and preferences of Watanabe. The artist used two specific arguments, <uint32> and <uint8>,
in the code to define the multiplier parameter; arguments that are usually not used within this
context and, therefore, would be considered as a technical mistake. To present an analogy from
architecture, Daniel Liebeskind and Frank Gehry explored and pushed the limitations of
building materials and statics, questioning what was considered as ‘adequate architecture,
designing buildings which retrieve their particular appearance from the exhaustion of these
limitations. Watanabe used the arguments to play with the possibilities of programming and to
demonstrate his abilities to control the tool, while assigning them the key role of the entire
artwork. The multiplier, in fact, is the defining entity on a conceptual and visual level, as it
creates the structure of unsigs and, therefore, is responsible for the refraction and overflow of
colours. To conclude this chapter, I will outline a parallel to photography.
NFTs reveal a technical analogy to photography.
32
At the time of its advent, photography
was not considered a self-contained art form and it took decades until this perception changed.
The intrinsic aesthetic of remembrance and temporality is solely one example that discloses
photography as an art form, reaching far beyond its use as a means of reproduction.
unsigned_algorithms reveals a conceptual parallel to photography. As only a fraction of all
potential combinations has been realised within the collection, every unsig resembles a
snapshot of one specific case in a multitude of possible options. In analogy to a photograph
which provides a subjective reflection of what inherently cannot be depicted in its totality
namely realityevery unsig reflects on its own parameters while the reference to unsig00000
indicates an encompassing system of higher complexity. The entirety of all pieces, strung
together in a specific sequence, builds an overarching narrative, processing the possible
combinations of the chosen input parameters. The collection resembles a film reel, consisting
of various stills, which is equally a condensation of what would have been possible. On a more
philosophical level, unsigs, as photography in general, trigger considerations about the relation
between a single entity and its surrounding structure; about the subjectivity of an isolated
perspective and how it changes when its position is located within an overarching system,
indicating that what we perceive as reality is always an approximation of what ontologically
cannot be grasped by a singular entity.
32
Considerations about the nature of photography can be found in Barthes Camera Lucida.
21
Repetition, iteration, and modification of a coherent core idea constitute a metaphor of
circular movements, reflecting the nature of unsigned_algorithms. The code itself is infinitely
applicable and repeatable; it strictly and exclusively computes given inputs and transforms
them into an output while every unsig is circling back to unsig00000 to retrieve the required
code. The stacking of properties creates variability on a vertical dimension, and the overarching
narrative adds to this variability on a horizontal level. These iterations reveal the variations and
limitations of always the same three base colours. Eventually, the title unsigned_algorithms
refers to a concept in computer programming called unsigned integers. It describes the
behaviour of certain values when they are translated into a different representational model, for
example, binary code into the hexadecimal system. These integers are part of the
aforementioned arguments that define the multiplier parameter which is, as shown, responsible
for the multiplication of given values and the aesthetics of unsigs. Due to a specificity of
unsigned integers, processes are induced to start over again once they have reached the end of
a unit. The conception of the artwork is condensed in this detail.
The circular movements of unsigned_algorithms metaphorically exemplify the
reappearance and continuity of thought and methodology in different contexts, media, and
times. Blockchain art has intersections with conceptual art, and it relies on similar means as
mass art. Further, it is programmatic, and therefore a sub-category of generative art,
ontologically belonging to the broad category of digital art. I used this specific artwork as a
representative example of blockchain art to demonstrate how this art form can, and must, be
integrated into a broader art historical context, continuing certain aspects of preceding art
movements and their related debates while using different methods and tools. Eventually, the
occurrence of blockchain as a novel medium brings new perspectives on existing concepts and
approaches.
Alexander Watanabe,
unsig0000000035, minted as NFTs on
Cardano, 2021. Own screenshot.
Alexander Watanabe,
unsig1760417640, minted as NFTs on
Cardano, 2021. Own screenshot.
22
Blockchain art and its constitution
A blockchain can be used as a place to store, and as a technology to disseminate, digital
assets. However, these characteristics do not necessarily constitute the blockchain as an actual
art medium. Greenberg argued that ‘[p]urity in art consists in the acceptance, willing
acceptance, of the limitations of the medium of the specific art’.
33
Partially in alignment with
this statement, I define ‘art medium’ as the physical, or immaterial, entity which explicitly
influences the constitution of the art, which is created on this specific medium, through its own
limitations, or rather characteristics. This implies that, in order to be considered as an art
medium, the blockchain must influence the art it contains with its own intrinsic features in a
way no other medium would do. I will expound these characteristics by returning to
DendroRithms and unsigned_algorithms as examples of blockchain art and, in addition,
delineate what I do not include in this category.
In public discourse, all types of art and creative productions related to blockchain
technology are mostly summarised under the term ‘NFT’. As a consequence, this has become
a buzzword. As already emphasised, such a naming is imprecise and misleading as it solely
refers to a technical functionality rather than providing information about the qualitative nature
of what it relates to. However, three different phenomena related to art production can be
identified at this point. By introducing them, I intend to give a brief overview of the kind of art
that is supported by blockchain technology. As is the case for any other attempt of classifying
art (forms), definitions remain loose due to the impossibility of absolute statements and
overlapping categories. The first phenomenon encompasses every form of digital art attached
to an NFT. The current labelling as ‘NFT’ is certainly used for marketing purposes as it
highlights the novelty of the technology. I assume that, once its adoption is more advanced,
this general classification will become less relevant and rather a piece of additional information
related to an artwork. Similarly, when discussing paintings, we only specify whether a painting
is a work made on canvas or wood if it is relevant. Then, the second phenomenon are so-called
PFPs, which is the abbreviation for Pro-File Pictures. Their emergence is closely related to the
introduction of NFTs. However, the conceptual interaction with their medium is limited, which
is why they must be considered separately. After providing some basic information about the
first two categories, I will focus on the third group, which constitutes an independent art form
blockchain art.
33
Greenberg (1940), p. 566.