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CREDEBL is open-source infrastructure organizations can use to build decentralized identity and verifiable credential systems. Its documented components include an identity platform, web-based Studio, protocol agents, and a React Native wallet SDK. The project describes support for multiple DID methods, credential formats, and ledger choices, but those claims do not guarantee interoperability or prove that a deployment is secure or suitable for a particular service.
What is CREDEBL?
CREDEBL describes itself as a multi-tenant, agent-agnostic, ledger-agnostic platform for managing decentralized identity and verifiable credentials. It is software for organizations building identity systems, rather than a consumer identity product. Its architecture is presented as a platform with a web-based Studio, protocol agents, and a mobile wallet SDK. CREDEBL and its open-source repository describe the project and code.
In this context, decentralized identity means an organization can issue and verify digital credentials without relying on a single central identity provider to perform every part of the exchange. It does not mean there is no governance, trusted issuer, or infrastructure: organizations still have to decide who may issue credentials, how verifiers establish trust, and how systems are operated.
What are verifiable credentials, and how does CREDEBL work?
A verifiable credential is a digitally signed set of claims about a subject, such as an identity or qualification. In a typical exchange, an issuer creates a credential, a holder stores it and presents proof of selected information, and a verifier checks the proof. CREDEBL documents functions for defining credential schemas and issuer-specific credential definitions, issuing credentials, verifying presentations, and revoking credentials.
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Schemas and credential definitions
A schema is a machine-readable template that describes the credential’s attributes and format. The documentation says an issuer-specific credential definition is associated with public verification keys, which verifiers can use to check a proof’s origin and integrity. In practice, the parties need to agree on the precise schema and credential profile; simply having credentials with similar names or attributes is not enough to ensure they can exchange them.
Issuance, presentation, and verification
- Define: The issuer establishes the schema and credential definition for the claims it will issue.
- Issue: The issuer creates a credential and delivers it to the holder’s wallet.
- Present: The holder responds to a verifier’s request with a credential or proof, according to the chosen format and profile.
- Verify: The verifier checks the proof and relevant issuer information. The verifier must also know which issuers and credentials to trust.
- Revoke when needed: The issuer uses the applicable revocation mechanism; the verifier must check status in a way compatible with that credential profile.
The exact protocol messages, user experience, trust rules, and revocation behavior depend on the selected agents, wallet, credential format, and deployment profile. Those details should be tested across the actual systems that will issue, hold, and verify credentials.
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Which DID methods, ledgers, and credential formats does CREDEBL support?
CREDEBL documentation lists several options. The platform overview describes Indy and Polygon ledger choices as well as ledger-less issuance using did:web, did:key, and did:peer. Its mobile SDK materials identify did:indy, did:polygon, did:web, and did:key. The documentation also lists AnonCreds and W3C JSON-LD credential formats.
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|---|---|---|
| Ledger or registry | Indy and Polygon; ledger-less issuance is also described | Confirm which registry or no-ledger model fits the trust, availability, governance, and operational requirements of the deployment. |
| DID methods | did:indy, did:polygon, did:web, did:key, and did:peer (listed across platform and SDK documentation) | Confirm the specific method is supported by each intended issuer, verifier, agent, and wallet, including resolution and lifecycle requirements. |
| Credential formats | AnonCreds and W3C JSON-LD | Confirm the exact profile, proof format, and required features are compatible end to end. |
These are documented support claims, not a promise that every combination works together. A standards-based implementation still requires compatible methods, profiles, and software. The W3C DID Core Recommendation defines DID syntax, a common data model, core properties, representations, operations, and resolution; it does not make all DID methods or implementations automatically interoperable.
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Can CREDEBL work without a blockchain?
CREDEBL’s overview describes ledger-less issuance using did:web, did:key, and did:peer, so its described architecture is not limited to a blockchain-backed registry. Ledger-less does not mean infrastructure-free: a deployment still needs a way to publish or resolve identifiers where applicable, establish issuer trust, deliver credentials, check proofs, and handle credential status. Whether a no-ledger option is appropriate depends on the parties’ trust model and operational needs.
What are CREDEBL’s agents and mobile wallet SDK for?
The project says its agents use Aries protocol implementations in Credo and ACA-Py, and describes both shared and dedicated deployment options. Agents handle protocol interactions between issuers, holders, and verifiers. Organizations evaluating the platform should establish which agent implementation and tenancy arrangement they would use, and whether those choices match their integration and isolation requirements.
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The React Native mobile SDK is described as a way to add holder-wallet capabilities to a new or existing mobile application, including credential storage and proof presentation. That may be useful when an organization wants wallet functions embedded in its own app. It should not be taken as proof that every third-party wallet can interoperate with a CREDEBL deployment; test the intended wallet and credential profile directly.
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CREDEBL says it serves as the protocol layer for Bhutan’s National Digital Identity initiative. The project also says it powered a Digi Yatra Foundation proof of concept for international digital travel credentials during IATA Contactless PoC technical trials involving IndiGo Airlines, SITA, and BLR Airport, and identifies Sovio as a platform built on CREDEBL. These are project-reported descriptions; they do not independently establish operational results, scale, or suitability for another deployment. CREDEBL’s site describes these implementations.
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How should an organization evaluate CREDEBL?
Start with the specific credential exchange you need to deliver, not a broad claim of standards support. Map the issuer, holder, verifier, identifiers, credential profile, and status checks, then validate that complete path with the selected software components.
- Compatibility: Confirm credential formats and profiles, DID methods, resolution behavior, and agent-to-wallet interoperability with the actual parties involved.
- Trust and governance: Define which organizations may issue credentials, how verifiers discover trusted issuers, and who maintains schemas and definitions.
- Privacy: Determine whether the chosen formats and presentation flows support the required data minimization and selective-disclosure behavior.
- Revocation and recovery: Document status-check behavior, what happens when a credential is revoked, and how holders recover access if a device or wallet is lost.
- Operations and security: Establish deployment responsibilities, monitoring, incident response, and the current security evidence for the exact version and configuration under consideration.
- Cost and support: Obtain current implementation and operating estimates, support terms, and responsibility boundaries directly from the project or implementation provider.
The reviewed project materials do not establish independent performance testing, current security-audit status, support terms, or pricing. Ask for current evidence rather than inferring these from open-source availability or reported deployments.
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