---
title: "Read the signed transparency-log head"
method: GET
path: "/api/v1/transparency"
tags: ["Integrity"]
---

# Read the signed transparency-log head

`GET /api/v1/transparency`

## Request

- Base URL: `https://fonteum.com`
- URL: `https://fonteum.com/api/v1/transparency`
- Auth: none required

Public, no-store read of the RFC 6962 signature-log head and its Ed25519 signature. The log remains independently re-checkable without an external mainnet timestamp. Legacy proofs are quarantined, and this response makes no Bitcoin claim from a calendar receipt or stored block height.

## Response `200`

Current signature-log size, signed tree head, and evidence-aware external-anchor pointer.

- TransparencyHeadResponse
  - `schema` 'fonteum-signature-transparency-log/v1', required
  - `algorithm` 'Ed25519', required
  - `merkle` string, required
  - `leaf_count` integer, required
  - `signed_tree_head` SignedTreeHead, required
    - `tree_size` integer, required
    - `root_hash` string, nullable, required
    - `signature` string, nullable, required
    - `key_id` string, nullable, required
    - `signed_at` string, date-time, required
  - `inclusion_proof_url` string, uri-template, required
  - `key_directory_url` string, uri, required
  - `external_anchors` object, required
    - `status_url` string, uri, required
    - `claim_policy` string, required
  - `docs_url` string, uri, required

---

[API](https://skmtc.dev/fonteum/apis/fonteum-api.md) · [All operations](https://skmtc.dev/fonteum/apis/fonteum-api/llms.txt) · [OpenAPI document](https://skmtc.dev/fonteum/apis/fonteum-api/revisions/334e6e179d0d?raw)