{"id":19889,"date":"2026-09-17T22:37:24","date_gmt":"2026-09-17T22:37:24","guid":{"rendered":"https:\/\/sertifier.com\/blog\/?p=19889"},"modified":"2026-09-17T22:37:24","modified_gmt":"2026-09-17T22:37:24","slug":"digital-credential-interoperability-testing","status":"publish","type":"post","link":"https:\/\/sertifier.com\/blog\/digital-credential-interoperability-testing\/","title":{"rendered":"Digital credential interoperability testing: an issuer-to-verifier acceptance plan"},"content":{"rendered":"<p>A digital credential is not interoperable merely because two products use the same standard name. The issuer and verifier still need to agree on identifiers, schema versions, proof methods, status behavior, transport and the policy that turns a technical result into a decision.<\/p>\n<p>This guide gives solution architects, QA leads and credential-program owners a bounded acceptance plan for one credential moving between intended systems. It does not certify a vendor, replace a standards conformance program or promise that a credential will work in every wallet or verifier.<\/p>\n<div class=\"sertifier-summary-box\">\n<p><strong>Short answer:<\/strong> Freeze a representative credential and expected result, test the intended issuer-to-verifier path and keep structure, proof, status, availability and policy outcomes separate.<\/p>\n<\/div>\n<h2>Short answer<\/h2>\n<p>To test digital credential interoperability, freeze one representative credential and its expected result, record every implementation and standard version, then run positive, negative, unavailable and policy-rejection cases through the real issuer-to-verifier route. Treat schema validity, proof verification, issuer resolution, credential status, data preservation, transport and verifier policy as separate outcomes. Retain the exact inputs, responses, timestamps and accountable decision so the result can be repeated.<\/p>\n<h2>What interoperability acceptance proves<\/h2>\n<p>An acceptance test proves that a defined credential can complete a defined journey between defined implementations under defined conditions. It does not prove universal compatibility.<\/p>\n<p>The <a href=\"https:\/\/standards.1edtech.org\/open-badges\/guides\/standards\/v3p0\/impl\" target=\"_blank\" rel=\"noopener\">1EdTech Open Badges implementation guide<\/a> describes products acting as issuers, hosts and verifiers. It also notes that Open Badges and CLR credentials can circulate through broader Verifiable Credentials tools that may run only a subset of the domain-specific checks. That distinction matters: a generic VC verifier can return a successful proof result without evaluating every Open Badges requirement or deciding that the achievement is acceptable for a business purpose.<\/p>\n<p>Use five separate acceptance layers:<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Layer<\/th>\n<th>Question<\/th>\n<th>Example failure<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Structure<\/td>\n<td>Does the object match the expected credential type and required fields?<\/td>\n<td>A required achievement identifier is missing<\/td>\n<\/tr>\n<tr>\n<td>Integrity<\/td>\n<td>Can the verifier validate the proof using the declared verification material?<\/td>\n<td>The credential changed after signing<\/td>\n<\/tr>\n<tr>\n<td>Status<\/td>\n<td>Can the verifier determine whether the credential is current under the shared method?<\/td>\n<td>The status endpoint is unavailable<\/td>\n<\/tr>\n<tr>\n<td>Meaning<\/td>\n<td>Did the fields, language, evidence and alignments survive the handoff?<\/td>\n<td>The verifier drops the criteria or skill alignment<\/td>\n<\/tr>\n<tr>\n<td>Policy<\/td>\n<td>Does this valid credential satisfy the receiving organization&#8217;s rule?<\/td>\n<td>The issuer is authentic but not accepted for this decision<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>A single green \u201cvalid\u201d indicator should not hide which of these layers passed.<\/p>\n<h2>Choose the right implementation guide<\/h2>\n<p>Sertifier&#8217;s existing <a href=\"https:\/\/sertifier.com\/blog\/credential-nobody-verifies-interoperability-gap\/\">interoperability-gap article<\/a> explains why verification links disappear across display surfaces such as professional profiles and hiring systems. This guide provides the technical and operational acceptance plan.<\/p>\n<p>Use these guides for related implementation decisions:<\/p>\n<ul>\n<li>The <a href=\"https:\/\/sertifier.com\/blog\/open-badges-3-explained\/\">Open Badges 3.0 guide<\/a> explains the standard and what to evaluate.<\/li>\n<li>The <a href=\"https:\/\/sertifier.com\/blog\/credential-verification-api\/\">credential verification API guide<\/a> distinguishes hosted pages, authenticated APIs, cryptographic verifiers and wallet-presentation patterns.<\/li>\n<li>The <a href=\"https:\/\/sertifier.com\/blog\/digital-credential-wallet-issuer-guide\/\">digital credential wallet guide<\/a> covers wallet selection, holder acceptance, recovery and exit.<\/li>\n<li>The <a href=\"https:\/\/sertifier.com\/blog\/digital-credential-platform-migration\/\">platform migration guide<\/a> covers vendor cutover, record mapping and verification continuity.<\/li>\n<\/ul>\n<p>Use the resulting design decisions as inputs, then keep the acceptance matrix focused on one issuer-to-verifier contract.<\/p>\n<h2>Define the test contract before producing credentials<\/h2>\n<p>Write a one-page contract that names:<\/p>\n<ol>\n<li>The issuer implementation and version.<\/li>\n<li>The verifier implementation and version.<\/li>\n<li>Any host, wallet, API gateway or display service on the route.<\/li>\n<li>The credential type, profile and schema versions in scope.<\/li>\n<li>The issuer and recipient identifier forms.<\/li>\n<li>The proof and verification method expected.<\/li>\n<li>The status method, if used.<\/li>\n<li>The transport or presentation method.<\/li>\n<li>The business decision the verifier will make.<\/li>\n<li>The expected result for each test case.<\/li>\n<\/ol>\n<p>If one of these fields is \u201cwhatever the platform supports,\u201d the test is not ready. Compatibility decisions need an explicit combination of options.<\/p>\n<p>Record optional properties too. An implementation can accept the required core while discarding a language tag, image, alignment or evidence link that matters to the program.<\/p>\n<h2>Build a safe test environment<\/h2>\n<p>Use synthetic people, non-production credentials and an isolated verifier policy whenever the systems allow it. Never copy live learner records, identity documents, assessment evidence, private keys or production API secrets into a test fixture or shared report.<\/p>\n<p>Prepare:<\/p>\n<ul>\n<li>A non-production issuer identity and controlled verification material.<\/li>\n<li>A synthetic recipient with no real email or employment data.<\/li>\n<li>A credential definition that contains representative required and optional fields.<\/li>\n<li>A stable test clock or documented issuance time.<\/li>\n<li>A status method or controlled status simulation when status is in scope.<\/li>\n<li>Logs that redact secrets and unnecessary personal data.<\/li>\n<li>A teardown rule for credentials, accounts and temporary endpoints.<\/li>\n<\/ul>\n<p>Separate configuration evidence from secret values. The acceptance report may record that a key identifier resolved and which algorithm was used. It should not contain a private key, access token, cookie or webhook secret.<\/p>\n<h2>Create a golden credential<\/h2>\n<p>The golden credential is the controlled input from which negative cases are derived. It should be small enough to inspect but rich enough to test the fields your program depends on.<\/p>\n<p>Include, when relevant:<\/p>\n<ul>\n<li>Stable credential and achievement identifiers.<\/li>\n<li>Issuer identity and verification method.<\/li>\n<li>Synthetic recipient identifier.<\/li>\n<li>Achievement name, description and criteria.<\/li>\n<li>Issue and validity dates.<\/li>\n<li>One skill or framework alignment.<\/li>\n<li>One evidence reference with controlled access.<\/li>\n<li>One image with expected media type and dimensions.<\/li>\n<li>One language tag and a non-ASCII character.<\/li>\n<li>Credential status information.<\/li>\n<li>A valid proof created by the test issuer.<\/li>\n<\/ul>\n<p>Calculate and retain a checksum of the exact serialized input. A screenshot of the visual credential is not the test object.<\/p>\n<h2>Run the positive path first<\/h2>\n<p>Send the unchanged golden credential through the same route the program intends to use. Capture each handoff separately so a later failure can be attributed to the issuer, transport, host, presentation layer or verifier.<\/p>\n<p>The positive case passes only when:<\/p>\n<ul>\n<li>The receiver accepts the declared credential type and version.<\/li>\n<li>The proof validates under the expected verification method.<\/li>\n<li>The issuer and subject identifiers are interpreted correctly.<\/li>\n<li>The verifier evaluates current status under the agreed method.<\/li>\n<li>Required and program-critical optional fields retain their meaning.<\/li>\n<li>The human-readable result matches the machine result.<\/li>\n<li>The verifier&#8217;s policy produces the expected decision.<\/li>\n<li>No unnecessary personal field becomes public during the route.<\/li>\n<\/ul>\n<p>Save the response and log identifiers, not only the final screen.<\/p>\n<h2>Test negative and unavailable states<\/h2>\n<p>Create one controlled change per case. Multiple changes in one credential make the cause ambiguous.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Case<\/th>\n<th>Change from the golden credential<\/th>\n<th>Expected outcome<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Schema failure<\/td>\n<td>Remove one required property<\/td>\n<td>Reject as structurally invalid<\/td>\n<\/tr>\n<tr>\n<td>Altered content<\/td>\n<td>Change a signed claim without creating a new proof<\/td>\n<td>Reject proof or integrity<\/td>\n<\/tr>\n<tr>\n<td>Unknown issuer<\/td>\n<td>Use an identifier the verifier cannot resolve or trust<\/td>\n<td>Return unknown or untrusted issuer, not valid<\/td>\n<\/tr>\n<tr>\n<td>Wrong verification method<\/td>\n<td>Reference unsupported or mismatched verification material<\/td>\n<td>Return unsupported or invalid proof<\/td>\n<\/tr>\n<tr>\n<td>Expired credential<\/td>\n<td>Set validity outside the test time<\/td>\n<td>Return expired under the agreed rule<\/td>\n<\/tr>\n<tr>\n<td>Revoked or suspended credential<\/td>\n<td>Publish the controlled inactive state<\/td>\n<td>Return the precise inactive state when supported<\/td>\n<\/tr>\n<tr>\n<td>Status unavailable<\/td>\n<td>Make the status resource temporarily unreachable<\/td>\n<td>Return unavailable or indeterminate, not current<\/td>\n<\/tr>\n<tr>\n<td>Missing evidence access<\/td>\n<td>Deny access to a protected evidence item<\/td>\n<td>Preserve credential result and report evidence access separately<\/td>\n<\/tr>\n<tr>\n<td>Unsupported version<\/td>\n<td>Present a version outside the contract<\/td>\n<td>Reject safely with an actionable reason<\/td>\n<\/tr>\n<tr>\n<td>Policy rejection<\/td>\n<td>Use a technically valid credential from a non-approved issuer<\/td>\n<td>Return technically valid plus policy rejected<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>The <a href=\"https:\/\/www.w3.org\/TR\/vc-data-model\/\" target=\"_blank\" rel=\"noopener\">W3C Verifiable Credentials Data Model 2.0<\/a> separates verification of a credential from confidence in the claims it contains. A verifier applies its own business rules after technical checks. Make that boundary visible in the result.<\/p>\n<h2>Test preservation, not just validation<\/h2>\n<p>An accepted object can still lose information that the learner or verifier needs. Compare source and destination values for:<\/p>\n<ul>\n<li>Credential, issuer, achievement and recipient identifiers.<\/li>\n<li>Achievement title, description and criteria.<\/li>\n<li>Issuance, validity and status fields.<\/li>\n<li>Evidence identifiers and access rules.<\/li>\n<li>Skill or competency alignments.<\/li>\n<li>Language and direction metadata.<\/li>\n<li>Images, media types and alt or descriptive text.<\/li>\n<li>Extensions that the receiving implementation claims to support.<\/li>\n<\/ul>\n<p>Classify each difference as preserved, normalized, omitted, transformed or unsupported. A harmless whitespace normalization is not the same as removing a skill identifier.<\/p>\n<p>If the receiver intentionally omits a property, document whether the program can still make its target decision. Do not label the handoff a full pass when a required program field disappears.<\/p>\n<h2>Test transport and authorization separately<\/h2>\n<p>A credential can be structurally valid and still fail to move between systems. Test the actual transport or presentation path, including:<\/p>\n<ul>\n<li>Authorization grant and token scope.<\/li>\n<li>Recipient or holder consent.<\/li>\n<li>Content type and response negotiation.<\/li>\n<li>Payload-size and rate limits.<\/li>\n<li>Duplicate delivery and idempotency behavior.<\/li>\n<li>Timeout and safe retry rules.<\/li>\n<li>Error bodies and correlation identifiers.<\/li>\n<li>Revoked access or expired authorization.<\/li>\n<li>Partial failure when a batch contains mixed records.<\/li>\n<\/ul>\n<p>Do not publish test credentials repeatedly to work around an unexplained error. Preserve the first failure, return to the last known-good input and isolate the cause.<\/p>\n<figure class=\"wp-block-image aligncenter size-large\"><a href=\"https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/verifier-result-state-model-v1.webp\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"1120\" src=\"https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/verifier-result-state-model-v1.webp\" alt=\"Accepted, invalid, inactive, unavailable, unsupported and policy-rejected verifier outcomes\" class=\"wp-image-19887\" title=\"\" srcset=\"https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/verifier-result-state-model-v1.webp 1600w, https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/verifier-result-state-model-v1-683x478.webp 683w, https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/verifier-result-state-model-v1-964x675.webp 964w, https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/verifier-result-state-model-v1-768x538.webp 768w, https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/verifier-result-state-model-v1-1536x1075.webp 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/a><figcaption class=\"wp-element-caption\">Keep definitive failures, unavailable services and policy decisions distinct.<\/figcaption><\/figure>\n<h2>Define a verifier result state model<\/h2>\n<p>Use explicit states instead of one boolean:<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>State<\/th>\n<th>Meaning<\/th>\n<th>Program action<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Accepted<\/td>\n<td>Technical checks and verifier policy passed<\/td>\n<td>Continue the defined workflow<\/td>\n<\/tr>\n<tr>\n<td>Invalid<\/td>\n<td>Structure, integrity or another definitive check failed<\/td>\n<td>Reject and investigate the source<\/td>\n<\/tr>\n<tr>\n<td>Inactive<\/td>\n<td>Status is expired, revoked or suspended under the shared method<\/td>\n<td>Apply the program&#8217;s inactive-record rule<\/td>\n<\/tr>\n<tr>\n<td>Unavailable<\/td>\n<td>A required resolver, status service or endpoint could not be reached<\/td>\n<td>Hold and retry under a bounded policy<\/td>\n<\/tr>\n<tr>\n<td>Unsupported<\/td>\n<td>The verifier does not implement the required type, version or method<\/td>\n<td>Route to compatibility review<\/td>\n<\/tr>\n<tr>\n<td>Policy rejected<\/td>\n<td>Technical checks passed but business acceptance failed<\/td>\n<td>Preserve the technical result and policy reason separately<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>Never convert unavailable into valid. Never convert unsupported into invalid without recording the actual limitation.<\/p>\n<figure class=\"wp-block-image aligncenter size-large\"><a href=\"https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/interoperability-evidence-pack-v1.webp\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"1080\" src=\"https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/interoperability-evidence-pack-v1.webp\" alt=\"Versioned input, expected result, observed stages, accountable review and retest closure\" class=\"wp-image-19888\" title=\"\" srcset=\"https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/interoperability-evidence-pack-v1.webp 1600w, https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/interoperability-evidence-pack-v1-708x478.webp 708w, https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/interoperability-evidence-pack-v1-1000x675.webp 1000w, https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/interoperability-evidence-pack-v1-768x518.webp 768w, https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/interoperability-evidence-pack-v1-1536x1037.webp 1536w, https:\/\/sertifier.com\/blog\/wp-content\/uploads\/2026\/09\/interoperability-evidence-pack-v1-220x150.webp 220w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/a><figcaption class=\"wp-element-caption\">Retain enough evidence for another reviewer to reproduce the decision.<\/figcaption><\/figure>\n<h2>Build the acceptance evidence pack<\/h2>\n<p>For every case, retain:<\/p>\n<ul>\n<li>Test-case identifier and owner.<\/li>\n<li>Standards, profile and implementation versions.<\/li>\n<li>Exact input checksum and synthetic fixture reference.<\/li>\n<li>Route and environment identifiers.<\/li>\n<li>Expected technical and policy outcomes.<\/li>\n<li>Observed results at each stage.<\/li>\n<li>Timestamp and test clock assumptions.<\/li>\n<li>Redacted error and correlation identifiers.<\/li>\n<li>Reviewer and decision.<\/li>\n<li>Defect or exception link.<\/li>\n<li>Retest result after a correction.<\/li>\n<\/ul>\n<p>The <a href=\"https:\/\/standards.1edtech.org\/open-badges\/specifications\/standards\/v3p0\/cert\" target=\"_blank\" rel=\"noopener\">1EdTech Open Badges conformance guide<\/a> defines formal conformance requirements and certification roles. A local acceptance pack is not a substitute for that certification. Describe it as evidence for the tested program configuration only.<\/p>\n<p>The W3C community&#8217;s <a href=\"https:\/\/github.com\/w3c\/vc-test-suite-implementations\" target=\"_blank\" rel=\"noopener\">VC test-suite implementation repository<\/a> also demonstrates that issuer and verifier implementations are tested as distinct endpoints. Participation or a passing local case does not establish a claim about an implementation that was not actually tested.<\/p>\n<h2>Assign failure ownership<\/h2>\n<p>Route defects by failed layer:<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Failure<\/th>\n<th>Primary owner<\/th>\n<th>Required evidence<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Source value is wrong<\/td>\n<td>Credential-program or source-data owner<\/td>\n<td>Source record and approval rule<\/td>\n<\/tr>\n<tr>\n<td>Serialization is wrong<\/td>\n<td>Issuer implementation owner<\/td>\n<td>Input model, output object and schema result<\/td>\n<\/tr>\n<tr>\n<td>Proof cannot be checked<\/td>\n<td>Issuer security and verifier owners<\/td>\n<td>Public verification material, method and verifier result<\/td>\n<\/tr>\n<tr>\n<td>Transfer fails<\/td>\n<td>Integration owner<\/td>\n<td>Request, redacted response, scope and correlation ID<\/td>\n<\/tr>\n<tr>\n<td>Field disappears<\/td>\n<td>Sending and receiving product owners<\/td>\n<td>Source\/destination comparison<\/td>\n<\/tr>\n<tr>\n<td>Status is ambiguous<\/td>\n<td>Lifecycle and verifier owners<\/td>\n<td>Status method, current state and availability result<\/td>\n<\/tr>\n<tr>\n<td>Policy rejects a valid credential<\/td>\n<td>Receiving program owner<\/td>\n<td>Policy version and rejection reason<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>An \u201cinteroperability team\u201d without layer-specific owners becomes a queue where no system accepts responsibility.<\/p>\n<h2>Apply a bounded Sertifier product route<\/h2>\n<p>Sertifier&#8217;s current public help documents a hosted credential-page flow where a recipient or verifier can use the verification action or search by credential ID. Its <a href=\"https:\/\/help.sertifier.com\/verification-page\">Verification Page guide<\/a> documents branded verification pages and a custom-domain option.<\/p>\n<p>These sources support testing a current Sertifier-hosted verification journey. They do not establish Open Badges 3.0 conformance certification, every proof or status method, an unauthenticated verification API or compatibility with an unnamed external wallet or verifier.<\/p>\n<p>If your acceptance contract requires a downloadable Europass credential, Sertifier&#8217;s current <a href=\"https:\/\/help.sertifier.com\/how-to-create-and-use-europass-digital-credentials-in-sertifier\">Europass guide<\/a> documents a separate <code>.jsonld<\/code> export and official viewer route. Treat that as its own named test combination. Do not generalize one Europass result to other credential formats or receivers.<\/p>\n<h2>Acceptance checklist<\/h2>\n<p>Before approving the combination, confirm that:<\/p>\n<ul>\n<li>The issuer, receiver, verifier and every intermediate role are named.<\/li>\n<li>Versions, profiles, identifiers, proof and status methods are frozen.<\/li>\n<li>Synthetic fixtures contain no production secrets or personal data.<\/li>\n<li>The exact golden object and checksum are retained.<\/li>\n<li>Positive, invalid, inactive, unavailable, unsupported and policy-rejected states have distinct expected results.<\/li>\n<li>Program-critical optional fields survive the journey.<\/li>\n<li>Transport authorization, duplicate and retry behavior have been tested.<\/li>\n<li>Technical validity and business acceptance remain separate.<\/li>\n<li>Every failure layer has an accountable owner and retest rule.<\/li>\n<li>Product and certification claims are limited to direct current evidence.<\/li>\n<li>Expansion to a new credential type, wallet, verifier or method requires a new acceptance combination.<\/li>\n<\/ul>\n<h2>Measure the tested route<\/h2>\n<p>Use operational denominators from the test manifest:<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Measure<\/th>\n<th>Numerator<\/th>\n<th>Denominator<\/th>\n<th>Decision supported<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Technical acceptance<\/td>\n<td>Cases with expected structure, proof and status results<\/td>\n<td>Technical cases executed<\/td>\n<td>Whether the implementation combination behaves as specified<\/td>\n<\/tr>\n<tr>\n<td>Preservation acceptance<\/td>\n<td>Critical fields preserved or approved as normalized<\/td>\n<td>Critical fields compared<\/td>\n<td>Whether meaning survives the handoff<\/td>\n<\/tr>\n<tr>\n<td>Policy acceptance<\/td>\n<td>Technically valid cases receiving the expected business decision<\/td>\n<td>Policy cases executed<\/td>\n<td>Whether verifier rules are implemented correctly<\/td>\n<\/tr>\n<tr>\n<td>Diagnostic completeness<\/td>\n<td>Failed cases with a distinct reason and accountable route<\/td>\n<td>Failed cases<\/td>\n<td>Whether defects can be resolved<\/td>\n<\/tr>\n<tr>\n<td>Retest closure<\/td>\n<td>Corrected cases passing the expected outcome<\/td>\n<td>Cases returned for retest<\/td>\n<td>Whether fixes are complete<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>These measures do not prove employer recognition, learner value or universal interoperability. Evaluate those outcomes separately with evidence from the organizations and learners using the tested route.<\/p>\n<div class=\"sertifier-conversion-cta\">\n<p><strong>Test the credential journey your program needs<\/strong><\/p>\n<p>Review the current hosted verification route and define the exact acceptance criteria for your intended systems.<\/p>\n<p><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.sertifier.com\/how-can-i-verify-my-certificate\">Read the credential verification guide<\/a><\/p>\n<\/div>\n<h2>Frequently asked questions<\/h2>\n<h3>Is standards conformance the same as interoperability acceptance?<\/h3>\n<p>No. Conformance checks an implementation against requirements for a defined standard and role. Acceptance checks a particular end-to-end combination and the program&#8217;s own decision rules. Both can be useful, and neither should be mislabelled as universal compatibility.<\/p>\n<h3>Does a valid signature mean the credential should be accepted?<\/h3>\n<p>No. A valid proof supports integrity and issuer authentication under the tested method. The verifier still evaluates issuer trust, claim meaning, status and its own policy.<\/p>\n<h3>How many systems should the first test include?<\/h3>\n<p>Start with one issuer, one intended receiver or presentation route and one verifier. Add one credential type, method or system at a time after the first combination passes and has diagnosable evidence.<\/p>\n<h3>What should happen when status cannot be checked?<\/h3>\n<p>Return an unavailable or indeterminate result and apply a bounded retry or manual-review policy. Do not report the credential as current merely because the service failed to answer.<\/p>\n<h3>Can a screenshot prove interoperability?<\/h3>\n<p>No. A screenshot can support visual review, but acceptance also needs the exact machine-readable input, stage results, versions, timestamps and expected versus observed outcomes.<\/p>\n<h3>When should a new test combination be created?<\/h3>\n<p>Create one when the credential type, schema\/profile version, proof method, status method, issuer, wallet\/host, verifier or business policy changes in a way that could change the result.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Test a digital credential from issuer to verifier with positive, negative, unavailable and policy cases plus a repeatable evidence pack.<\/p>\n","protected":false},"author":3,"featured_media":19886,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_title":"","rank_math_description":"","rank_math_focus_keyword":"","rank_math_canonical_url":"","footnotes":""},"categories":[939],"tags":[],"class_list":["post-19889","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-digital-credentials"],"_links":{"self":[{"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/posts\/19889","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/comments?post=19889"}],"version-history":[{"count":1,"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/posts\/19889\/revisions"}],"predecessor-version":[{"id":19890,"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/posts\/19889\/revisions\/19890"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/media\/19886"}],"wp:attachment":[{"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/media?parent=19889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/categories?post=19889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sertifier.com\/blog\/wp-json\/wp\/v2\/tags?post=19889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}