DEMO CERTIFICATE — This page is a demonstration of the Attesté public provenance graph format. No real artwork, artist, collector, or gallery is represented. All data is fictional.
Cape Dutch Homestead at Dusk by DEMO: Elara van Zijl, 1924 — Attesté provenance certificate
DEMO
Attesté Certificate

Cape Dutch Homestead at Dusk

by DEMO: Elara van Zijl, 1924

Oil on canvas · 76 × 61 cm

This is a DEMO certificate. No real artwork, collector, or gallery is represented. It exists to illustrate the Attesté public provenance graph.

Cryptographic Integrity

SHA-256 Hash (full 64-char)
eea6ca5adfe61561627a76b292bd1edbc35b20aea32c8559b28be47d374335e6
Issued 17 April 2026
Version 1.0
Status DEMO

Provenance Chain

  1. 1924
    Created
    Artist's studio, Stellenbosch
    Completed and signed by the artist in autumn 1924. Documented in the artist's own ledger (Demo Reference #D-001).
  2. 1938
    Acquired
    Suid-Afrikaanse Kunsvereniging annual exhibition, Cape Town
    Purchased at the society's annual open exhibition by a Bloemfontein collector. Original receipt held in estate.
  3. 1971
    Transferred
    Estate of P.J. Mostert, Bloemfontein
    Inherited by the collector's daughter following probate. No change to physical condition noted at time of transfer.
  4. 2025-11-03
    Acquired
    Strauss & Co Johannesburg, Lot 47
    Sold with full catalogue attribution note and condition report. Accompanied by estate correspondence confirming 1938 purchase.

Valuations & Condition

Valuations

R 480,000
2026-01-15 · Demo Valuations (Pty) Ltd — FICTIONAL
Confidence: high
Replacement value for insurance purposes. Market comparable: similar Cape Dutch landscape works of the period.

Condition

Very Good
2025-10-28 · Demo Conservator Reference — FICTIONAL
Stable craquelure consistent with age. No evidence of previous restoration. Minor frame abrasion top-right corner — cosmetic only. Canvas support sound.

Art-Historical Context

Cape Dutch domestic architecture and the golden light of the Western Cape provided an enduring subject for South African painters of the early twentieth century. This fictional work by DEMO: Elara van Zijl places the viewer at the threshold of dusk: a whitewashed gabled homestead dissolves into the violet-tinted hills of the Boland, its thatch roof burnished copper by a setting sun. Van Zijl, a fictional alumna of the 1920s Cape colony art world, worked in a tradition bridging the Dutch tonal inheritance brought by earlier settler painters and a nascent sensitivity to African light unmediated by European academicism. Her treatment of shadow on lime-washed walls, the characteristic scalloped gable echoing the mountain contour, and the restrained palette of ochre, indigo, and cream place this demonstration piece within a recognisably local idiom. The work is presented here purely to illustrate the Attesté public provenance certificate format.

Generated by gemma2:9b · audited 2026-04-17 · confidence 91%

Sister Artworks

Sister artworks will appear here once the graph has more certificates. These are determined by cosine similarity over the 768-dimensional embeddings of the full Attesté provenance graph.

About This Certificate

An Attesté Certificate is a cryptographically-secured public record of an artwork's provenance, issued by the Attesté platform on behalf of a consenting collector. Every certificate includes the artwork's title, artist, dimensions, medium, provenance chain, valuations, and condition reports — all hashed together into a single SHA-256 fingerprint.

The certificate's hash binds the data to a point in time. Any modification to the underlying record would produce a different hash, making tampering detectable by anyone who runs the verify function above. Attesté asserts: "the owner reported these facts; the hash chain is intact." Attesté does not claim to authenticate the physical artwork itself.

Galleries, auction houses, insurers, and researchers may cite this URL as the canonical provenance reference. This page is edge-cached globally and permanently indexed by search engines. To issue certificates for your own collection, visit atteste.art or download the app from atteste-b6409.web.app.

Frequently Asked Questions

What does the Attesté Certificate for 'Cape Dutch Homestead at Dusk' prove?

This certificate proves that the provenance record for 'Cape Dutch Homestead at Dusk' by DEMO: Elara van Zijl was cryptographically hashed using SHA-256 at the time of issuance. The hash links the artwork's metadata — title, artist, dimensions, medium, provenance chain, valuations, and condition reports — to a single tamper-evident fingerprint. Any change to the underlying data would produce a different hash, making tampering detectable. Attesté does not assert the authenticity of the physical artwork itself.

Who can verify an Attesté Certificate?

Anyone can verify this certificate. The page embeds the canonical JSON data and a client-side SHA-256 verification button that re-computes the hash in your browser using the Web Crypto API and checks it against the displayed hash. No login or account is required. Galleries, auction houses, insurers, and researchers can cite this URL (https://atteste.art/cert/eea6ca5adfe61561.html) as the canonical reference.

Can I share this certificate URL publicly?

Yes. The URL https://atteste.art/cert/eea6ca5adfe61561.html is permanent and publicly indexable. It is edge-cached on Netlify's CDN and will remain live as long as the Attesté platform operates. If the collector ever revokes the public opt-in, the page will serve an HTTP 410 notice; the hash and metadata are retained in Firestore for audit purposes only and are no longer publicly displayed.

Does Attesté authenticate the artwork's physical authenticity?

No. Attesté Certificates record and cryptographically seal the provenance information as reported by the owner. Attesté asserts: 'the owner reported these facts; the hash chain is intact.' Physical authenticity, attribution, and forgery detection require specialist art-historical and scientific analysis beyond the scope of this certificate. Always consult a qualified conservator or auction house specialist for authenticity opinions.