{ "@context": { "id": "@id", "type": "@type", "proof": { "@id": "https://w3id.org/security#proof", "@type": "@id" }, "DataIntegrityProof": { "@id": "https://w3id.org/security#DataIntegrityProof" }, "challenge": "https://w3id.org/security#challenge", "created": { "@id": "http://purl.org/dc/terms/created", "@type": "http://www.w3.org/2001/XMLSchema#dateTime" }, "domain": "https://w3id.org/security#domain", "expires": { "@id": "https://w3id.org/security#expiration", "@type": "http://www.w3.org/2001/XMLSchema#dateTime" }, "nonce": "https://w3id.org/security#nonce", "cryptosuite": "https://w3id.org/security#cryptosuite", "proofValue": { "@id": "https://w3id.org/security#proofValue", "@type": "https://w3id.org/security#multibase" }, "verificationMethod": { "@id": "https://w3id.org/security#verificationMethod", "@type": "@id" }, "proofPurpose": { "@id": "https://w3id.org/security#proofPurpose", "@type": "@vocab" }, "assertionMethod": { "@id": "https://w3id.org/security#assertionMethod", "@type": "@id" }, "authentication": { "@id": "https://w3id.org/security#authenticationMethod", "@type": "@id" }, "capabilityInvocation": { "@id": "https://w3id.org/security#capabilityInvocationMethod", "@type": "@id" }, "capabilityDelegation": { "@id": "https://w3id.org/security#capabilityDelegationMethod", "@type": "@id" }, "keyAgreement": { "@id": "https://w3id.org/security#keyAgreementMethod", "@type": "@id", "@container": "@set" } } }