Date: 2026-08-05. Method: automated browser crawl of sine.foundation (homepage, /sine-manifesto, /datacommons, /library index + key articles, footer/imprint), cross-checked against cached/search-indexed older snapshots where the live page had changed. Gathered by a research subagent for the internal strategy Hypothesenpapier; saved here verbatim (lightly reformatted) as the immutable raw source per wiki convention. Do not edit — supersede with a new dated file if re-crawled.
1. Homepage — https://sine.foundation/
Hero headline: “A Think and Do Tank offering solutions for Collective Action Problems” — a shift from an older cached title, “SINE Foundation: A Think and Do Tank offering Solutions for Data Sharing Dilemmas,” suggesting a recent reframing from “data sharing” to “collective action problems.”
Nav: For Members | For Universities | For Companies | Use Cases | Technology | Governance | Library | About Us.
Opening explainer: “Often, a group of actors could benefit from working together, but conflicting interests prevent cooperation. When this happens, we face a collective action problem that costs organizations and society enormous untapped potential. A prime example occurs when companies withhold valuable data, fearing loss of control and exposure of sensitive information. SINE addresses this challenge through technological and governance mechanisms that enable cooperation while protecting individual interests.”
Approach: “SINE fuses technology with governance mechanisms, enabling organizations to share their data securely, and to maintain their data sovereignty along the way - even after it has been shared.” (links to /datacommons)
Embedded “SINE Teaser (EN)” video iframe returned a bot-block error page on the automated crawl — likely fine for real users, not independently verified.
Carbon Transparency section
“Decarbonization is one of the most pressing collective action problems we face… This creates three key challenges for companies: inconsistency in existing methods and standards, missing interoperability of technology solutions, and the risk of exposing sensitive data.”
- PACT: “SINE was technological partner of WBCSD for the development of the PACT Protocol from day one. Now implemented by 35+ software solutions…”
- iLEAP: “SINE partnered with the Smart Freight Centre to develop iLEAP… Currently being implemented by 15+ companies…”
- “Partners at iLEAP” logo strip, no names extractable, “…and many more.”
Technology section
“We build digital public goods and open-source cryptographic software for solving collective action problems and data sharing dilemmas.”
- Polytune: MPC engine; “Try Polytune now with our benchmarking demo” (benchmarking.sine.dev).
- Research: ATLAS project, sponsored by the Federal Ministry of Education and Research (BMBF/BMFTR).
- Open Source: github.com/sine-fdn/polytune.
Caption (with a grammar slip in the live copy — “establish strong governance”): “What if the participants’ inputs are incorrect? Since they remain secret, the only way to avoid this is by establish[ing] strong governance mechanisms that allow the technology to flourish.”
Governance section
“We view data pools created by multiple parties as digital common goods… Inspired by Elinor Ostrom, first woman to win the Nobel Prize in Economics, we developed…” (truncated on-page; links to /datacommons).
Four audience callouts
For Members / For Universities / For Companies / For Industry Initiatives — all generic invitations ending in “Please feel free to get in touch!” (mailto:vorstand@sine.foundation).
Recent articles teased
- Whitepaper: Agentic AI in Logistics (2025-12-22)
- Privacy-Preserving Vaccination Checks (ATLAS/Frankfurt Health Department)
- Introducing SINE’s Secure Benchmarking
Newsletter form (Name/Mail) via Cleverreach GmbH & Co. KG.
Footer / Imprint (December 2025)
SINE Foundation e.V.
Bredowstr. 35a, 10551 Berlin
+49 174 205 83 20 · vorstand@sine.foundation
Represented by the board (Vorstand): Martin Pompéry, Aurel Stenzel.
Registration number: VR 38431 B · Tax ID: DE347053218
Editorial responsibility (§55 RStV): Aurel Stenzel, Herzog Heinrich Str 32, 80336 München.
No social media icons anywhere in nav or footer.
Board discrepancy: an earlier cached/indexed version lists four board members (Aline Blankertz, Karina Buschsieweke, Aurel Stenzel, Martin Pompéry); the December 2025 footer lists only two (Stenzel, Pompéry) — no public explanation found. Aurel Stenzel’s listed editorial address also shifted from an earlier Berlin address to Munich between snapshots.
2. Manifesto — /sine-manifesto (dated Berlin, 29.07.2020)
Defines SINE’s Think/Do split: Think = research/thought leadership on secure data sharing; Do = partnering with progressive orgs, open-source publication, role-modeling. States technology alone is insufficient — market mechanisms can still force full data disclosure; “a new data governance” is needed alongside cryptography. Also carries the full English-language GDPR privacy policy (July 2020): Plausible Analytics (cookie-free), Cleverreach newsletter (double opt-in), Google Forms-based membership signup (forms.gle/PTQuHMg6DrZis1uy8).
3. Data Commons — /datacommons
Title “Data Commons for Sustainability.” Contains a stale (March 2021) German-language promo for a SINE×Cozero carbon-benchmarking launch event — five years old, sitting alongside 2025 content, a sign of unmaintained legacy material.
Two whitepapers announced: Data Commons for Sustainability and Designing
Digital Product Passports (both already ingested into this wiki — see
papers/sine-data-commons-2022.md and papers/sine-dpp-data-commons-2023.md).
Named endorsement quotes (strongest social proof anywhere on the site): Prof. Dr. Martin Stuchtey (Systemiq), Lavinia Bauerochse (Deutsche Bank), Christoph Bornschein (TLGG Consulting), Tell Münzing (“Co-Founding Member, SINE Foundation” — not listed in the current board/imprint, suggesting founding-team turnover).
4. Governance / Ostrom — /library/ostrom-and-data-a-deep-dive (2021-03-25)
SINE’s own adaptation of Ostrom’s design principles to data governance (six points: clear user/resource boundaries via blind signatures; appropriation rules via data unions; collective choice arrangements addressing GDPR’s “lack of effectiveness”; member monitoring; graduated sanctions; dispute resolution via homomorphic encryption + reputation systems, flagged as “most challenging”).
5. Technology — Polytune, ATLAS, Secure Benchmarking, Tandem, Garble
No single “/technology” landing page exists (guessed URL 404s); content is scattered across the homepage and library posts:
- Polytune (library, 2025-09-11): open-source Rust MPC engine, “even if all but one participant… collude,” paired with Garble compiler. polytune.org, garble-lang.org, github.com/sine-fdn/{polytune,garble,tandem, sine-benchmark,impact-protocols}, github.com/sponsors/sine-fdn.
- Secure Benchmarking (2025-11-26): MPC-based peer benchmarking, live demo at benchmarking.sine.dev.
- ATLAS (2023-11-03): MPC for municipal data analysis under German data-protection law; includes a governance “policy engine”; academic contributors Anja Lehmann (HPI), Florian Tschorsch (TU Dresden); security verification by Cryspen; regional partners Polyteia, Metropolregion Rhein-Neckar (Baden-Württemberg, Saarland pilots).
- Vaccination-check PoC (2025-11-26): ATLAS deployment with the Frankfurt Health Department.
- Tandem (2022): predecessor two-party MPC engine to Polytune.
6. Use cases
No standalone “/use-cases” URL; content dispersed across library posts: carbon transparency (PACT/iLEAP), logistics/eFTI, supply-chain resilience, agriculture, fashion, impact/ESG data infrastructure (IDX), public sector (ATLAS), agentic AI in logistics.
7. Library — 41 posts, chronological highlights
Posting cadence roughly monthly-to-bimonthly 2020–2024, then a ~6-month gap (Nov 2024–May 2025), followed by five posts Aug–Dec 2025. No author bylines except one guest talk (Anne Jacobs, SINE Lab Talks #4, Sept 2024). No RSS feed found.
8. About Us / Team / Jobs
No dedicated About/Team/Jobs pages resolve (all 404 or not captured as distinct URLs). Only named individuals anywhere on the site: Martin Pompéry and Aurel Stenzel (bare names in the legal imprint, no bios/photos); Aline Blankertz and Karina Buschsieweke (in an older indexed board list only); Tell Münzing (one testimonial, “Co-Founding Member”); Anne Jacobs (one guest-talk mention); Anja Lehmann / Florian Tschorsch (ATLAS academic partners); “Raimundo” (first name only, two 2022 onboarding blog posts). The only job posting found site-wide is a single 2020 Rust Engineer listing, explicitly marked “(closed).” External search surfaced an unlinked LinkedIn company page and an Ashoka “Changemaker Companies” profile — neither referenced from SINE’s own site.
9. Funders / Partners / Members
No dedicated funders/sponsors/members page. Scattered mentions: WBCSD (PACT), Smart Freight Centre (iLEAP), German Federal Ministry of Education and Research (ATLAS), Polyteia, Metropolregion Rhein-Neckar, Cryspen, HPI, TU Dresden, Frankfurt Health Department, Cozero (2021, stale). No membership fee schedule or public member roster; the only join mechanism is a generic Google Form.
10. Legal / Contact
SINE Foundation e.V., Bredowstr. 35a, 10551 Berlin; VR 38431 B; Tax ID DE347053218; founded 2020 per the manifesto date. No annual report or financial statements published anywhere on-site despite e.V. status. No live chat, no contact form beyond the newsletter signup. No newsletter archive.
11. Language
Primarily English; occasional German insertions (Cozero banner, one library post title, one workshop explicitly marked “(in German)”). A “DE” toggle exists on /datacommons but no fully translated German site was found — possibly a non-functional or incomplete toggle.
12. Notably absent (subagent’s own synthesis, 20 points — condensed)
No team/leadership page beyond two bare imprint names; unexplained board contraction (4→2 named members); no current job openings; no funders/sponsors list or annual report; no membership pricing/tiers; no adoption metrics beyond two round numbers (PACT “35+,” iLEAP “15+”); no press kit or media mentions page; no roadmap/theory of change; uneven blog cadence (real ~6-month 2024/25 gap); no linked social media presence at all; no newsletter archive; no explicit differentiation from adjacent standards bodies (WBCSD, Catena-X, GS1, etc.); no glossary/FAQ for technical jargon (MPC, garbled circuits, Ostrom’s principles, data commons, data trust); no clean, separately-crawlable Use Cases/Technology/Governance/About pages despite nav items implying they exist; no visible multi-language depth despite a DE toggle; no structured case studies with real client-attributed metrics; no visible SINE-internal governance beyond the bare e.V. board listing (no advisory/scientific board named); minimal contact options (one mailto, one phone, no form, no regional offices); generic “get in touch” CTAs with no self-serve next step (no demo booking, no sales contact).
Gaps not resolved by this crawl
Exact destination URLs behind “Use Cases,” “Technology,” “Governance,” “About Us” nav labels; the /technology/sbp page; individual content of ~30 of the 41 library articles (titles/dates only); social accounts under personal branding of Pompéry/Stenzel.