Prisma PlatformEurope is building data spaces.
Most implementations recreate the same centralisation problem — with a European flag on top.
The alternative, built entirely on W3C open standards, already exists.
It just needs to be deployed.
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Gaia-X federation services → W3C open standards:
🪪 Identity & trust → W3C DID + ODRL (did:wba sovereign identity)
🔄 Sovereign data exchange → SPARQL SERVICE (federated query, no replication)
📚 Federated catalogue → DCAT2 (dataset catalogue per node)
✅ Compliance proof → SHACL + PROV-O (validation + immutable audit)
No proprietary middleware. No central authority.
A data space built on a vendor platform is not a commons.
It is a commons with a landlord.
The landlord sets the rules.
The landlord can raise the rent.
The landlord can leave.
W3C open standards have no landlord.
SPARQL has no vendor.
PROV-O has no subscription fee.
Federated data spaces are not a product category.
They are a governance model — and governance belongs to the commons, not to a platform provider.
Prisma is the implementation. The standards are the foundation.
Full post: blog.prisma-platform.eu/federated-data-spaces