Permanent project revision

Circular Building Material Passports

Revision 2026-10-04-reverification · effective 2026-10-04

Superseded. A later revision exists: 2026-10-04-reverification-sources →

unreviewed

Re-verification: the Circl pavilion was dismantled from May 2024, materials stored for reuse.

sha256:05e44de14d44be14807666953c119d86d409ac80d34302f3f40dffe5aad144ae

All revisions → Current entity page →

Change set

replace /snapshot/projectFingerprint — Updated projectFingerprint to the current sourced project record.
replace /snapshot/asOf — Updated asOf to the current sourced project record.
replace /snapshot/claims — Updated claims to the current sourced project record.
replace /snapshot/sources — Updated sources to the current sourced project record.

8: of 8 claims mapped
4: source dossiers
1: publication dates recorded
0: archives linked
0: exact locators
0: content captures hashed

Claims, one by one

The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.

Claim 1 clm-55f508e9dc2f3bab descriptive

Amsterdam's Circl pavilion

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this file
What the mapping says: The project page is titled 'Circl, Amsterdam' and describes it as a pavilion: 'The ‘Circl’ pavilion is unique in the Netherlands: the first constructed practical example of sustainable and circular designs.' Client is named as ABN AMRO.
Caveat: The page confirms the pavilion and the city, but never gives its address or district; it does not place Circl at Zuidas.

Sources carrying this claim

Dutch Architects (trade press)

Claim 2 clm-96f4f4e11db5da4c descriptive

digital material passport

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this file
What the mapping says: Dutch Architects records that Circl's materials 'have been recorded in a ‘digital twin’; the building passport is named LLMNT.' I amsterdam defines the instrument: 'Digital material passports are databases that record detailed information about materials, enabling future reuse, reducing waste, and supporting a circular construction economy.'
Caveat: Neither source calls the Circl passport a Madaster passport, and neither says it was Madaster's first — I amsterdam lists Madaster's Amsterdam-area projects as Schiphol Trade Park and Juf Nienke, not Circl.

Claim 3 clm-348433b6a7d9cee1 descriptive

recording every material for future reuse

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this file
What the mapping says: 'All materials, components and parts that make up the building have been recorded in a ‘digital twin’', and reuse is stated as the purpose from the outset: 'The reuse of the applied materials was factored into the process right from the start.'
Caveat: The entry no longer claims the location (Zuidas), the superlative ('Madaster's first') or the year 2017: none of the three listed sources carries them.

Sources carrying this claim

Dutch Architects (trade press)

Claim 4 clm-a8261dd7f6a990d2 descriptive

under the name ‘LLMNT’

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this file
What the mapping says: Verbatim: 'the building passport is named LLMNT.'
Caveat: No claim-specific caveat recorded

Sources carrying this claim

Dutch Architects (trade press)

Claim 5 clm-11bcaacda6f70721 quantitative

Eight Amsterdam-region municipalities got their own building passports in 2019

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this file
What the mapping says: Madaster's post, dated 6 Nov 2019: 'On 31 October, eight municipalities received a certificate for their advanced implementation of material passports, as part of a material passport pilot project. These municipalities in the Amsterdam metropolitan area (MRA) were each presented with a Madaster material passport for one of their buildings.' Named: Amsterdam, Almere, Diemen, Edam-Volendam, Haarlem, Lelystad, Uithoorn and Waterland.
Caveat: The same post also says the eight 'were awarded this certificate because they were well on their way to obtaining a material passport', so the passport was not necessarily complete on the day. Each passport covers one building per municipality, not a municipal portfolio, and the MRA reaches well beyond Amsterdam (Almere, Lelystad). The account is the platform operator's own.

Sources carrying this claim

Madaster (technology partner)

Claim 6 clm-89d90f0f860af627 descriptive

ongoing circular-building pilots in Buiksloterham, Strandeiland and Overhoeks

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this file
What the mapping says: The page, updated 6 November 2025, lists under contractor Dura Vermeer: 'Circular neighbourhood pilots in the Amsterdam Area, such as Strandeiland IJburg and Overhoeks, Buiksloterham, Amsterdam-Noord.' A second company (FRONT) is credited with 'Buiksloterham circular houses'.
Caveat: All three sites appear only as a company's project list on a city investment-promotion page — no start dates, size, budget or per-pilot status is given, and no source outside the page confirms the pilots are running.

Sources carrying this claim

I amsterdam (city business platform)

Claim 7 clm-f055634e5b48616f descriptive

aim to keep demolition materials in local use

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this file
What the mapping says: The demolition half is stated for the same contractor: Dura Vermeer is 'actively embedding circular principles into its projects – from modular building designs to the reuse of demolition waste', and works with 'materials passports to track resources throughout their lifecycles'.
Caveat: The 'local' half is not stated for these pilots. It rests on a different company on the same page (Buurman Amsterdam, which sources from regional deconstruction projects and 'supports local makers'); no source says materials from Buiksloterham, Strandeiland or Overhoeks stay in the region.

Sources carrying this claim

I amsterdam (city business platform)

Claim 8 clm-807e0bfe226294c7 quantitative

the pavilion itself was dismantled from May 2024, its materials stored for reuse

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this file
What the mapping says: Zuidas announced dismantling of the Circl pavilion from 13 May 2024, with materials stored for reuse.
Caveat: No claim-specific caveat recorded

Sources carrying this claim

Zuidas — Dismantling of Circl pavilion starts (30 Apr 2024)

Source dossiers and revision state

This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.

unreviewed Revision 2026-10-04-reverification effective 2026-10-04 · created 2026-10-04

Awaiting operator and domain-expert review; publication of this revision implies neither.

sha256:05e44de14d44be14807666953c119d86d409ac80d34302f3f40dffe5aad144ae

Revision history → Permanent version link → Machine-readable record → Evidence Constitution →

8: of 8 claims mapped
4: source dossiers
1: publication dates recorded
0: archives linked
0: exact locators
0: content captures hashed

Governance facts carried by the record

Operator: Madaster
Actor types: private
Funding model: Not recorded
Funding description: Not recorded
Cost: Not recorded
Ownership: Not recorded
Decision rights: Not recorded
Exit conditions: Not recorded

4 source dossiers

Madaster (technology partner) madaster.com · 1 linked claim

Open original source ↗

Stable source ID: src-72fd5179c95dc0ce
Publisher: Name not classified · madaster.com
Type / language: web-page · language not classified
Published: Not recorded
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-10-04
Dossier created: 2026-10-04
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Official record of the 2019 material-passport certificates awarded to 8 Amsterdam-area municipalities.
Descriptive only — not page/paragraph exact
Claims linked: clm-11bcaacda6f70721

Dutch Architects (trade press) dutcharchitects.org · 4 linked claims

Open original source ↗

Stable source ID: src-12e70da2cb624ac5
Publisher: Name not classified · dutcharchitects.org
Type / language: web-page · language not classified
Published: Not recorded
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-10-04
Dossier created: 2026-10-04
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Confirms the Circl pavilion's material passport is named 'LLMNT'.
Descriptive only — not page/paragraph exact
Claims linked: clm-55f508e9dc2f3bab
clm-96f4f4e11db5da4c
clm-348433b6a7d9cee1
clm-a8261dd7f6a990d2

I amsterdam (city business platform) iamsterdam.com · 3 linked claims

Open original source ↗

Stable source ID: src-93a23f020eb629a0
Publisher: Name not classified · iamsterdam.com
Type / language: web-page · language not classified
Published: Not recorded
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-10-04
Dossier created: 2026-10-04
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Confirms ongoing circular-neighbourhood pilots in Strandeiland, Overhoeks and Buiksloterham; updated Nov 2025.
Descriptive only — not page/paragraph exact
Claims linked: clm-96f4f4e11db5da4c
clm-89d90f0f860af627
clm-f055634e5b48616f

Zuidas — Dismantling of Circl pavilion starts (30 Apr 2024) zuidas.nl · 1 linked claim

Open original source ↗

Stable source ID: src-89dd4e10737bc14a
Publisher: Name not classified · zuidas.nl
Type / language: web-page · language not classified
Published: 2024-04-30
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-10-04
Dossier created: 2026-10-04
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Dismantling of Circl began 13 May 2024 (Icon Real Estate, Victory Group); materials to be stored and prepared for future reuse. The page does not mention the material passport.
Descriptive only — not page/paragraph exact
Claims linked: clm-807e0bfe226294c7

Known limits of this file

Publisher names and source languages have not yet been classified; domains are recorded without guessing.
Existing source notes are descriptive locators, not page- or paragraph-exact citations.
A missing archive, publication date or content hash is shown as null rather than inferred.
The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.