---
title: "FREE — append-only sha256 commitments over the archive"
method: GET
path: "/api/board/proof"
tags: ["Verification"]
---

# FREE — append-only sha256 commitments over the archive

`GET /api/board/proof`

## Request

- Base URL: `https://coil.trade`
- URL: `https://coil.trade/api/board/proof`
- Auth: none required

Each day's published scores are committed at publish time, before the outcome is known. Ships a verification recipe that reproduces byte-identically in Python and JavaScript. ?date=YYYY-MM-DD returns one commitment.

## Query parameters

- `date` string, date

## Response `200`

Commitment log + recipe

---

[API](https://skmtc.dev/coil/apis/coil-scanner-agent-api.md) · [All operations](https://skmtc.dev/coil/apis/coil-scanner-agent-api/llms.txt) · [OpenAPI document](https://skmtc.dev/coil/apis/coil-scanner-agent-api/revisions/e087ee004cfb?raw)