Blockchain-Enhanced SDMX Data Dissemination

The Blockchain-Enhanced SDMX Dissemination Platform adds a cryptographic Trust Layer to the SDMX ecosystem. It plugs into existing SDMX Registries and dissemination workflows to give official statistics an immutable, machine-verifiable audit trail. Standard SDMX-ML payloads are canonicalized (W3C C14N 1.1), fingerprinted with SHA3-512 at both whole-file and per-<Series> granularity, aggregated into a domain-separated, length-prefixed Merkle tree, and anchored to a public ledger (XRPL DevNet for PoC) in a single transaction. The published SDMX file is rewritten to be self-contained, carrying the anchored root, the ordered Merkle leaves, and a W3C Verifiable Credential signed under the publisher's XRPL key, so any consumer - including DeFi applications and AI-agent verification pipelines - can re-derive the root and verify the publisher's identity from the file alone plus one ledger lookup, in 1–2 s, with no dependency on the publisher's backend.

Governance and contribution