# Trust Chains

## Returns a list of all VP documents.

> Returns a list of all VP documents. Only users with the Standard Registry role are allowed to make the request.

```json
{"openapi":"3.0.0","info":{"title":"Guardian","version":"3.6.0-rc"},"servers":[{"url":"/api/v1","description":"version 1.0"}],"security":[{"bearer":[]}],"components":{"securitySchemes":{"bearer":{"type":"http","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"VpDocumentDTO":{"type":"object","properties":{"id":{"type":"string"},"policyId":{"type":"string"},"hash":{"type":"string"},"signature":{"type":"number"},"status":{"type":"string","enum":["NEW","ISSUE","REVOKE","SUSPEND","RESUME","FAILED"]},"tag":{"type":"string"},"type":{"type":"string"},"createDate":{"type":"string"},"updateDate":{"type":"string"},"owner":{"type":"string"},"document":{"$ref":"#/components/schemas/VpDTO"}},"required":["id","policyId","hash","signature","status","tag","type","createDate","updateDate","owner","document"]},"VpDTO":{"type":"object","properties":{"@context":{"type":"array","items":{"type":"string"}},"id":{"type":"string"},"type":{"type":"array","items":{"type":"string"}},"verifiableCredential":{"additionalProperties":true,"type":"array","items":{"type":"object"}},"proof":{"$ref":"#/components/schemas/ProofDTO"}},"required":["@context","id","type","verifiableCredential","proof"]},"ProofDTO":{"type":"object","properties":{"type":{"type":"string"},"created":{"type":"string"},"verificationMethod":{"type":"string"},"proofPurpose":{"type":"string"},"jws":{"type":"string"}},"required":["type","created","verificationMethod","proofPurpose","jws"]},"UnauthorizedErrorDTO":{"type":"object","properties":{"statusCode":{"type":"number"},"message":{"type":"string"}},"required":["statusCode","message"]},"ForbiddenErrorDTO":{"type":"object","properties":{"statusCode":{"type":"number"},"message":{"type":"string"},"error":{"type":"string"}},"required":["statusCode","message"]},"InternalServerErrorDTO":{"type":"object","properties":{"statusCode":{"type":"number"},"message":{"type":"string"}},"required":["statusCode","message"]}}},"paths":{"/trust-chains":{"get":{"description":"Returns a list of all VP documents. Only users with the Standard Registry role are allowed to make the request.","operationId":"TrustChainsApi_getTrustChains","parameters":[{"name":"pageIndex","required":false,"in":"query","description":"The number of pages to skip before starting to collect the result set","schema":{"type":"number"}},{"name":"pageSize","required":false,"in":"query","description":"The numbers of items to return","schema":{"type":"number"}},{"name":"policyId","required":false,"in":"query","description":"Filter by policy database ID","schema":{"type":"string"}},{"name":"policyOwner","required":false,"in":"query","description":"Filter by policy owner DID","schema":{"type":"string"}}],"responses":{"200":{"description":"Successful operation. Returns VP documents array and total count in X-Total-Count header.","headers":{"X-Total-Count":{"schema":{"type":"integer"},"description":"Total items in the collection."}},"content":{"application/json":{"schema":{"type":"array","items":{"$ref":"#/components/schemas/VpDocumentDTO"}}}}},"401":{"description":"Unauthorized request.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/UnauthorizedErrorDTO"}}}},"403":{"description":"Forbidden","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ForbiddenErrorDTO"}}}},"500":{"description":"Internal server error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/InternalServerErrorDTO"}}}}},"summary":"Returns a list of all VP documents.","tags":["trust-chains"]}}}}
```

## Builds and returns a trustchain, from the VP to the root VC document.

> Builds and returns a trustchain, from the VP to the root VC document. Only users with the Standard Registry role are allowed to make the request.

```json
{"openapi":"3.0.0","info":{"title":"Guardian","version":"3.6.0-rc"},"servers":[{"url":"/api/v1","description":"version 1.0"}],"security":[{"bearer":[]}],"components":{"securitySchemes":{"bearer":{"type":"http","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"UnauthorizedErrorDTO":{"type":"object","properties":{"statusCode":{"type":"number"},"message":{"type":"string"}},"required":["statusCode","message"]},"ForbiddenErrorDTO":{"type":"object","properties":{"statusCode":{"type":"number"},"message":{"type":"string"},"error":{"type":"string"}},"required":["statusCode","message"]},"InternalServerErrorDTO":{"type":"object","properties":{"statusCode":{"type":"number"},"message":{"type":"string"}},"required":["statusCode","message"]}}},"paths":{"/trust-chains/{hash}":{"get":{"description":"Builds and returns a trustchain, from the VP to the root VC document. Only users with the Standard Registry role are allowed to make the request.","operationId":"TrustChainsApi_getTrustChainByHash","parameters":[{"name":"hash","required":true,"in":"path","description":"VP document hash used to build the trust chain","schema":{"type":"string"}}],"responses":{"200":{"description":"Successful operation. Returns the trust chain and user map.","content":{"application/json":{"schema":{"type":"object","properties":{"chain":{"type":"array","description":"Ordered array of documents forming the trust chain (from VP to root VC)","items":{"type":"object","properties":{"id":{"type":"string","description":"Document ID or DID"},"type":{"type":"string","description":"Document type (VC, VP, DID)"},"tag":{"type":"string","description":"Policy block tag"},"label":{"type":"string","description":"Human-readable label"},"schema":{"type":"string","description":"Schema identifier"},"owner":{"type":"string","description":"Document owner DID"},"document":{"type":"object","description":"Raw document content"}},"required":["id","type","tag","label","schema","owner","document"]}},"userMap":{"type":"array","description":"Mapping of DIDs to usernames for all users in the trust chain","items":{"type":"object","properties":{"did":{"type":"string","description":"User DID"},"username":{"type":"string","description":"Username"}},"required":["did","username"]}}},"required":["chain","userMap"]}}}},"401":{"description":"Unauthorized request.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/UnauthorizedErrorDTO"}}}},"403":{"description":"Forbidden","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ForbiddenErrorDTO"}}}},"500":{"description":"Internal server error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/InternalServerErrorDTO"}}}}},"summary":"Builds and returns a trustchain, from the VP to the root VC document.","tags":["trust-chains"]}}}}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://dev.guardian.hedera.com/api-reference-guardian/trust-chains.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
