---
title: "Read an external timestamp receipt"
method: POST
path: "/v1/commands/get_evidence_anchor"
tags: ["Link monitoring and evidence"]
---

# Read an external timestamp receipt

`POST /v1/commands/get_evidence_anchor`

## Request

- Base URL: `https://app.agentlinkops.com`
- URL: `https://app.agentlinkops.com/v1/commands/get_evidence_anchor`
- Auth: one of:
  - HTTP bearer
  - HTTP bearer

Shared command transport. All logical arguments in JSON; no query or Idempotency-Key header. See canonical operation reference.

## Headers

- `X-Workspace-ID` string

## Request body

- GetEvidenceAnchorInput
  - `subject` 'link' | 'target' | 'citation', required: subject; see schema.
  - `observationId` string, required: ID of a saved observation; this does not fetch a new publisher page.

## Response `200`

Command result, including queued admission.

- GetEvidenceAnchorOutput
  - `id` string, required: Resource identifier returned by the operation.
  - `workspace_id` string, required: Workspace that owns this record.
  - `project_id` string, required: Project that owns this record.
  - `subject` 'link' | 'target' | 'citation', required
  - `observation_id` string, required
  - `digest` string, required
  - `status` 'pending' | 'verified' | 'failed', required: Resource lifecycle status.
  - `attempts` integer, required: Provider send attempts recorded for this delivery.
  - `created_at` string, required: UTC timestamp when the record was created.
  - `last_error` string, nullable, required
  - `queryBase64` string, nullable, required
  - `responseBase64` string, nullable, required
  - `verification` object, nullable, required
    - `verified` true, required
    - `authority` 'FreeTSA', required
    - `method` 'rfc3161-pinned-tsa', required
    - `digest` string, required
    - `anchored_at` string, required
    - `serial` string, required
    - `certificate_sha256` string, required
    - `revocation_checked` false, required
    - `trust` string, required

## Other responses

- `429`: Request-rate or usage refusal. Inspect error.code and recovery details before retrying.
- `default`: Error envelope. Non-configuration 5xx messages are masked and details omitted; allowlisted configuration errors retain static operator recovery.

---

[API](https://skmtc.dev/agentlinkops/apis/agentlinkops-http-api.md) · [All operations](https://skmtc.dev/agentlinkops/apis/agentlinkops-http-api/llms.txt) · [OpenAPI document](https://skmtc.dev/agentlinkops/apis/agentlinkops-http-api/revisions/2a712a1dcfa7?raw)