Overture Maps Schema

The Beneficial Ownership Data Standard (BODS) is an open standard providing a specification for modelling and publishing information on the beneficial ownership and control of corporate vehicles

An open standard for portable, interoperable AI memory across tools, sessions, and devices.

Transit Integrated Data Exchange Specification for historical transit operations data

Mobility Data Interoperable Principles (MDIP)

Open Agent Trust Infrastructure (OATI) — an open standard for verifiable AI agent identity, delegated authority, policy enforcement, and signed action receipts.

agents.txt is a lightweight, machine-readable capability declaration layer for websites in the agentic web: a protocol-agnostic discovery file that publicly announces what agent-interaction capabilities a site supports, without embedding the implementation details of any specific protocol.

On-chain vLEI credential attestation on Solana — Groth16 zero-knowledge proofs, soulbound non-transferable PDAs, GLEIF-compliant. Permissionless and revocable.

List of open data, open standards, open source tools and resources relating to global data interoperability and accessibility which have been created by members of the Global Open Data Integration Network

Open standard for emotional state in agentic AI systems

xDBML (eXtended Database Markup Language) is an open markup language for describing the shape of structured data and its semantics in the declarative metadata attached to that shape -- across heterogeneous storage and exchange technologies.

W3C DID Method Specification for did:sns — decentralized identifiers anchored to Solana Name Service domains. Human-readable, hierarchically-controlled, cross-border interoperable.

Command line tool that facilitates data enrichment of any Elasticsearch index. Originally designed to enrich data published in line with version 0.4 of the Beneficial Ownership Data Standard, but it actually facilitates the enrichment of any Elasticsearch index

HERALD is an open-source CLI that emits the standard discovery files agents need to read your site and discover its agent-interaction capabilitie. One config object drives all of it. Each file is an independent open standard; pick the layers you want and HERALD generates only those.

Expert Claude skill for beneficial ownership data, the Beneficial Ownership Data Standard, international policy context, and country-specific registers

Sovereign AI-agent collaboration platform: humans and agents in Matrix rooms, A2A delegation, open standards, Kubernetes-native GitOps.

Combine and deduplicate Register outputs into a single compressed file

Structured evaluation framework for W3C DID methods — checklist, scoring criteria, and JSON schemas for comparing decentralized identifier implementations.

Open specification and community manifesto to formalize best practices, schemas, and specifications for cross-vendor data exchange and unified connector configurations

Cross-domain meta-framework defining minimum requirements for cryptographically verifiable AI decision provenance. Maintained by VeritasChain Standards Organization (VSO).