---
title: "BRK vs independent second provider — drift log"
method: GET
path: "/api/v1/data-quality/drift"
tags: ["Data Quality"]
---

# BRK vs independent second provider — drift log

`GET /api/v1/data-quality/drift`

## Request

- Base URL: `https://tradingstrategies.work`
- URL: `https://tradingstrategies.work/api/v1/data-quality/drift`
- Auth: HTTP bearer

Drift statistics between BRK and an independent second provider. The comparison source changed — bgeometrics until 2026-07-06, Coinmetrics from 2026-09 — so each row and summary group carries comparison_source and values from different sources must not be averaged. Active pairs: market_cap, circulating_supply, hash_rate, puell_multiple. Retired but queryable as history: realized_price, sth_sopr, lth_sopr. Public transparency. [API Pro tier]

## Query parameters

- `metric_pair` 'market_cap' | 'circulating_supply' | 'hash_rate' | 'puell_multiple' | 'realized_price' | 'sth_sopr' | 'lth_sopr'
- `days` integer
- `include_series` boolean

## Response `200`

Summary + optional time-series.

## Other responses

- `400`: Invalid input — fehlt Pflichtfeld oder Wert außerhalb des erlaubten Bereichs.
- `401`: Unauthenticated — kein gültiger Bearer-Token im Authorization-Header.
- `403`: Tier-Insufficient — Endpoint braucht höheren API-Tier. Response enthält upgrade_url.
- `404`: Not-Found — Resource existiert nicht oder gehört nicht dem aktuellen User.
- `429`: Rate-Limit überschritten — Tier-Quota (hourly/daily) oder Per-Endpoint-Quota erreicht. Retry-After-Header gesetzt.
- `500`: Internal Error.
- `503`: Upstream-Failure — Datenquelle nicht erreichbar (Binance, EODHD, etc.).

---

[API](https://skmtc.dev/tradingstrategies/apis/backtesting-arena-public-api.md) · [All operations](https://skmtc.dev/tradingstrategies/apis/backtesting-arena-public-api/llms.txt) · [OpenAPI document](https://skmtc.dev/tradingstrategies/apis/backtesting-arena-public-api/revisions/f82e8d6eecd7?raw)