The open standard

One vocabulary for procurement data.

SIGNET is the free, public-domain standard that bridges OCDS, Peppol and EN 16931 – and records who decided what, under whose authority, with what human approval. Declare adoption in minutes. Implement at your pace. Certify when you are ready.

Adopt SIGNET See an invoice become Peppol BIS

Stop re-mapping.

One model, projected without loss to OCDS, Peppol BIS, EN 16931 and UBL – and lifted back.

Stop re-onboarding.

Qualifications and credentials are verifiable claims that travel with the supplier, not the platform.

Stop guessing who decided.

Every award, qualification and auction close carries a Decision record: who, under what mandate, from what inputs, with what human approval.

Proof

See it run

Live demonstration

See a SIGNET invoice become a Peppol BIS document

→

Three governed actions

Watch an AI agent award a contract – accountably→

Watch an AI agent qualify a supplier – conditionally→

Watch an agent-run auction clear – provably→

The register

Adopters

The founding register is open.

Organisations that declare before 31 December 2026, or before the Standards Committee is constituted if that comes first, are recorded as founding adopters. No entries yet – the first will appear here.

How it is made

How we're doing it

Concert stewards SIGNET toward the OpenPeppol AISBL pattern: a non-profit steward with multi-stakeholder representation and no single-party control. It is not there yet, and says so: the Standards Committee that will govern normative change is not yet constituted, and until it is, changes are taken under a published bootstrap clause – reasoned in writing, subject to a stated comment period, recorded as interim resolutions, and reversible by the Committee on the record. Every decision taken this way is indexed in the repository.

Extensions

The core stays lean; domains extend it

onboardingSchemas + demo shipped

OnboardingCase, SupplierQualification (durable status with first-class conditional qualification, value caps, category restrictions); credentialType codelist

auctionSchemas + demo shipped

Auction, Bid (a profile of the sourcing flow — reverse / english / dutch / sealed-bid / multi-criteria; deterministic, operator-independent close); auctionType codelist

identityWorking Draft

Approval (verifiable human approval); delegationOfAuthority credential type; normative no-PII rule for hash-anchored records

commodity-riskSpec + schemas + conformance rules shipped

Portfolio-level commodity risk governance (positions, coverage corridors as Policy subtypes, price marks, assessments, price-shock scenarios, hedge proposals bridging to core Need)

receiptWorking Draft (spec only; schemas to follow)

Receipt, MatchResult — receipt/acceptance and the governed three-way match (tolerances as a matchTolerance Policy; the match is a mandate-bound Decision)

performanceWorking Draft (spec only; schemas to follow)

ServiceLevelPolicy, PerformanceAssessment — SLAs/KPIs as Policy and derived, event-anchored supplier performance assessments that feed the qualification lifecycle

amendmentsWorking Draft (spec only; schemas to follow)

Amendment — event-anchored contract deltas (variation / extension / renewal / novation / termination) with derived current state

frameworksWorking Draft (spec only; schemas to follow)

FrameworkAgreement (Contract subtype), CallOff (direct award / mini-competition) with a conformance-checkable drawdown invariant (Σ call-offs ≤ ceiling)

negotiationWorking Draft (spec only; schemas to follow)

Negotiation, Offer — a governed exchange of offers over named terms under per-term Mandates; the object model behind the existing decisionType: negotiationMove

requirementsWorking Draft (spec; schemas to follow)

Requirement, RequirementSet — what was asked, as a versioned addressable object; selection-is-derivation, variance as a Decision-backed relation; relies on three core sockets (Score.criterionRef, Obligation.provenance, Submission.responses)

Three entities, one ecosystem

Steward. Standard. Operator.

The Steward

Concert

The neutral consortium stewarding the standard, publishing specifications, and protecting the ecosystem's integrity. Implementations can be SIGNET Certified against a public, machine-runnable suite — identical for every implementer; no certifications have been issued yet. Concert owns the IP and licenses it to commercial operators.

The Standard

SIGNET

Secure Intelligent Governed Network for Exchange and Trade — the open specification for procurement networks. Model-agnostic. Tool-agnostic. Organisation-agnostic. The harness through which intelligence becomes procurement.

The Operator

Score

The commercial entity building and operating SIGNET-compliant networks. Score turns the standard into production infrastructure — provisioning, integration, agent orchestration, and managed services.

Interests register →

Ecosystem

Built on proven infrastructure

PEPPOLUBL 2.3OCDSEN 16931W3C VC 2.0W3C DID 1.0MCPA2AeFormsSolid Protocol

Implementations can be SIGNET Certified against a public, machine-runnable suite — identical for every implementer.

Adopt SIGNET

Adoption is free, public, and takes one pull request. It is a statement of practice, not certification.

How to declare