# Window by Jan Robert Leegte

## The work and its context

Window is project 280 on the Art Blocks V2 core contract 0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270, published under the canonical slug window-by-jan-robert-leegte and credited to Jan Robert Leegte. The indexed project record reports a completed edition of 404 of 404 invocations, runtime js@na, and the official description: The mid grey chiseled computer interfaces of 1997 have always reminded me of sculptures created in bas-relief, a technique going back to the stone carved petroglyphs that is as ancient as humankind's first steps in making art. The combination of illusion and tactility found in these interfaces shows our longing to have the computer experience to be part of the material world. Therefore it comes as no surprise that the programming language of Ethereum is named 'Solidity'. The blockchain is software, yet it behaves and feels like hardware.  🪨  Window pays tribute to interface culture, and as such, the work is responsive and not scaling. When the work is viewed on a smaller scale, details will disappear, yet the composition stays recognisable. It is like stepping back to see a work from a distance. The work can also increasingly reveal more details when made larger. As a result Window will keep unfolding in the future as resolutions will grow.  The work follows standard window interactions. Double clicking or tapping the title bar will toggle between full browser and windowed view. On a laptop or desktop in windowed view, you can drag and resize your Window as you please. When made tiny, it makes for a nice profile pic. Clicking or tapping the background will cycle through three different background colours.  Window comes in seven latent colours and both in Windows Classic or Mac Classic style. With the feature ‘Latent colour’ I look at the invisible steps within the procedure of a generative artwork. I love the idea that the script has chosen to feature a colour, but in a later step could fail to make it to the composition. By showing the colour as a feature, I try to extend the visual work with deeper invisible layers of the generative process. Check the features to see what colour is seeded.  In honour of the blockchain and the web, the work is written in vanilla JavaScript, using no dependancies, and generates standard HTML DOM aiming for a closer feel of the user interface. [^S01][^S02]

Those figures are current index observations retrieved on 2026-09-19, not a reconstruction of the original public sale announcement. Atlas position is a catalogue ordinal and is not the on-chain project ID. The live collection page and the Hasura projects_metadata row agree on title, slug, contract, and project ID after a filtered query that used the exact slug. [^S01][^S02]

js@na DOM composition. Functions createNewWindow, splitLevel, dragMove. Licence CC BY-NC-ND 4.0.

This essay treats the stored artist program, four independently identified outputs, and a freshly checked AB5D holding (or an explicit collection gap) as primary evidence. Metadata traits are cited only when they were returned for the same V2 contract token IDs that were visually inspected. They do not replace looking at the pictures. [^S04][^S09]

## Conception and development

Leegte's long practice of browser chrome as subject is the account implied by the official title and by functions named createNewWindow and splitLevel. Token 0 is nested grey OS windows with a blue title bar.

The development account used here is the specific source named in the citations, not a paraphrase of an artist-dossier page. Where that account is an official project description written in the artist's voice, that limit is stated rather than upgraded into an unpublished studio diary. Where an interview exists, the sentences that actually name Window are the ones relied on. [^S07][^S01]

Interview sentences that name another project are not treated as statements about this slug. [^S02][^S07]

## How the work was constructed

The complete artist program for slug window-by-jan-robert-leegte was retrieved from projects_metadata.script filtered by that exact slug. The UTF-8 payload is 10410 bytes with SHA-256 96f9503d3fc19ad2f4f558e139fe2ebfaf37b38324eb1f7ef8a7250a53194319. Runtime on the project record is js@na. The script was read in full; it was not executed in this research session. [^S03]

10410-byte vanilla JS. createAndAddDiv, createNewWindow, createSubWindowPair, dragStart/Move/Stop, splitAllLevels, setBgColor. Hash seeds the split tree. Token 0 is the empty nested chrome still.

Visual claims come from inspected PNGs of the listed token IDs.

Seed handling is visible in the retrieved program: Hash decides how many nested panes and title-bar colour. Time and interaction behaviour in code is: Drag and split handlers exist. Not dragged here. PNG is one chrome state. No audio. A handler found in source is not the same thing as a control that was pressed in a live renderer during this session; tested controls are listed only when an actual key or pointer action was performed. [^S03][^S10]

External dependencies are those declared by script_type_and_version plus any library identifiers inside the file. Public visibility of the stored script does not grant a right to redistribute the raw artist source in this package, so the analysis cites functions and byte length rather than reprinting the program. [^S03][^S06]

## The mint

Indexed chronology for project 280 on 0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270 is as follows. First token minted_at is 2022-03-09T16:56:49+00:00. activated_at is 2022-03-11T21:50:04+00:00. start_datetime is 2022-03-18T16:00:00+00:00. completed_at is 2022-03-19T15:43:35+00:00. Invocations stand at 404 of a maximum 404, with complete=true on the retrieved row. [^S02][^S04]

Calculated intervals from those timestamps: first mint to activation is 2.20 days; activation to start_datetime is 6.76 days; start_datetime to completion is 23.73 hours; first mint to completion is 9.95 days. These are differences of indexed clock fields, not a claim about when a web storefront button became visible to every collector. A first mint that precedes start_datetime is treated as an early or reserved mint unless a separate allocation record is produced. [^S02][^S04]

Indexed clocks: first 2022-03-09T16:56:49+00:00, activated 2022-03-11T21:50:04+00:00, start 2022-03-18T16:00:00+00:00, completed 2022-03-19T15:43:35+00:00. Early first-mint timestamps are not labelled reserved without a separate allocation record.

Historic per-token ETH prices for the original public sale were not recovered from a primary price table during this session and remain unresolved. Any floor price visible on a marketplace page in 2026 is a current listing observation, not the 2021 ask. [^S01][^S02]

## Copyright and licensing

The project record stores the artwork licence label 'CC BY-NC-ND 4.0'. That string includes an explicit 4.0 version and is treated as Creative Commons version 4.0. Code rights for the artist program are not separately labelled on the same field; they are treated as unknown rather than assumed identical to the artwork deed. [^S02][^S06]

Artwork label copied exactly as 'CC BY-NC-ND 4.0'.

Third-party runtime js@na is a separate rights object from both the artwork outputs and the artist source. p5.js, three.js, and ordinary browser JavaScript each keep their own licence texts. This package does not redistribute those libraries. [^S03][^S06]

Original essay prose in this package is dedicated CC0-1.0 by the research operator. That dedication does not change the artwork, code, or dependency licences.

## Close reading of examples

Window #0 is token 280000000 on 0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270, minted 2022-03-09T16:56:49+00:00. The canonical token page returned HTTP 200. The inspected media-proxy PNG is a static frame. Nested grey window chrome with a blue title bar, empty grey client area, left-edge sliver pane. Indexed features returned for this V2 token: Interface Windows Classic; Latent colour Hyperlink Blue.  [^S04][^S05][^S09]

Window #1 is token 280000001 on 0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270, minted 2022-03-10T14:29:51+00:00. The canonical token page returned HTTP 200. The inspected media-proxy PNG is a static frame. Second Window chrome stack. Indexed features returned for this V2 token: Interface Windows Classic; Latent colour Interface Silver.  [^S04][^S05][^S09]

Window #10 is token 280000010 on 0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270, minted 2022-03-18T16:00:04+00:00. The canonical token page returned HTTP 200. The inspected media-proxy PNG is a static frame. Tenth public mint of Window. Indexed features returned for this V2 token: Interface Windows Classic; Latent colour Document White.  [^S04][^S05][^S09]

Window #20 is token 280000020 on 0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270, minted 2022-03-18T16:00:38+00:00. The canonical token page returned HTTP 200. The inspected media-proxy PNG is a static frame. Twentieth public mint of Window. Indexed features returned for this V2 token: Interface Windows Classic; Latent colour Document White.  [^S04][^S05][^S09]

The AB5D header candidate is token 280000120 (edition 120), currently indexed to 0xdd19308a9731cdecb67e0d80ca6823394208c045, which is one of the three linked addresses returned for username ab5d on 2026-09-19. That ownership match is a present-tense index observation, not proof of continuous custody since mint. AB5D Window holding. [^S08][^S04][^S09]

Motion, interaction, and audio: Drag and split handlers exist. Not dragged here. PNG is one chrome state. No audio. The static PNGs document halt or preview states. They are not by themselves proof that a live loop is still running, nor proof that a work is silent. No soundtrack was heard from these pages during this session. [^S09][^S10][^S03]

## Significance and limitations

Window is project 280 by Jan Robert Leegte. The close readings above are the evidence for what the stored program outputs.

Unresolved research questions that remain after this pass: (1) What was the exact public-sale unit price in ETH at start_datetime, supported by a contemporaneous primary source rather than a later floor? (2) For tokens whose live renderer was not stopwatch-timed, what is the measured wall-clock period of one full cycle or one completed progressive draw? (3) What contemporaneous primary source records the original public unit price in ETH? (4) Incomplete Control aside, do any of the three current AB5D wallets later acquire or dispose of the header token used above after 2026-09-19? [^S02][^S08][^S10]

This package is a draft for human review. Structural validation tests file shape, not the truth of seeing or of licence interpretation.

[^S01]: Art Blocks. [Window by Jan Robert Leegte collection page](https://www.artblocks.io/collection/window-by-jan-robert-leegte). Accessed 2026-09-19.
[^S02]: Art Blocks Hasura index. [projects_metadata record for window-by-jan-robert-leegte](https://artblocks-mainnet.hasura.app/v1/graphql). Accessed 2026-09-19.
[^S03]: Jan Robert Leegte. [Window on-chain artist program](https://artblocks-mainnet.hasura.app/v1/graphql). Accessed 2026-09-19.
[^S04]: Art Blocks Hasura index. [tokens_metadata for sampled Window token IDs](https://artblocks-mainnet.hasura.app/v1/graphql). Accessed 2026-09-19.
[^S05]: Art Blocks. [Canonical token pages for sampled Window outputs](https://www.artblocks.io/token/1/0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270/280000000). Accessed 2026-09-19.
[^S06]: Creative Commons. [Reported artwork licence label CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/). Accessed 2026-09-19.
[^S07]: Jan Robert Leegte. [Window official description](https://window.leegte.org). Accessed 2026-09-19.
[^S08]: Art Blocks. [AB5D linked wallet set and profile index](https://www.artblocks.io/profile/ab5d). Accessed 2026-09-19.
[^S09]: Art Blocks media proxy. [Static PNG renders of sampled Window tokens](https://media-proxy.artblocks.io/0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270/280000000.png). Accessed 2026-09-19.
[^S10]: Art Blocks. [Live generator renderer for Window](https://generator.artblocks.io/0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270/280000000). Accessed 2026-09-19.