Threshold (Maquette III)
This is a DEMO certificate. No real artwork, collector, or gallery is represented. It exists to illustrate the Attesté public provenance graph.
Cryptographic Integrity
Provenance Chain
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2022CreatedArtist's foundry, JohannesburgCast in an edition of 3 + 1 AP. This is edition 2/3. Foundry mark stamped on base. Demo Reference #D-002.
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2023-06-15ExhibitedDemo Contemporary Gallery, Johannesburg Art Fair (FICTIONAL)Exhibited at the fictional gallery's stand, Art Fair 2023. Catalogue ref. JHB-AF23-M17.
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2023-09-04AcquiredPrivate sale via Demo Contemporary Gallery (FICTIONAL)Acquired directly from the gallery post-fair. Certificate of authenticity and edition registration supplied.
Valuations & Condition
Valuations
Condition
Art-Historical Context
South African sculpture since the democratic transition has navigated the tension between international contemporary idioms and local material and social histories. This fictional maquette, Threshold (Maquette III), by DEMO: Thabiso Mamaru, belongs to a speculative series exploring thresholds as both architectural and psychological boundaries — doorframes, lintels, the liminal space between inside and outside. Cast in warm bronze with a deliberate dark-green patina, the elongated figure bends into itself at the waist, simultaneously entering and exiting an implied portal. Mamaru is a fictional sculptor invented to demonstrate the Attesté certificate format; the idiom he represents — figuration inflected by process-based abstraction — is nonetheless a genuine current in Johannesburg's commercial gallery scene. The maquette scale (89 cm) suggests a larger realised version; collectors of the series are documented to hold edition numbers in strict sequence. All provenance data is illustrative only.
Generated by gemma2:9b · audited 2026-04-17 · confidence 88%
Sister Artworks
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 'Threshold (Maquette III)' prove? ▼
This certificate proves that the provenance record for 'Threshold (Maquette III)' by DEMO: Thabiso Mamaru 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/24ba0fa15c430b83.html) as the canonical reference.
Can I share this certificate URL publicly? ▼
Yes. The URL https://atteste.art/cert/24ba0fa15c430b83.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.