BackPoW public API
Free Proof of Work data for 107+ coins and 623+ mining devices. No key, no sign-up, no rate limit. Static JSON served from the CDN with open CORS, so you can call it straight from a browser. We only ask that you cite BackPoW with a link back.
Per-coin endpoint
GET https://backpow.com/coins-data/{CoinId}.json — for example /coins-data/Bitcoin.json, /coins-data/Monero.json, /coins-data/Kaspa.json.
Response fields
| Field | Meaning |
|---|---|
| Algorithm | PoW algorithm (SHA-256, RandomX, KawPow, …) |
| Nethash | network hashrate, in H/s |
| Difficulty | current network difficulty |
| Block time | average seconds per block |
| Bl. reward | block reward in native units |
| Bl. reward 24h | 24-hour average block reward |
| Last block | latest block height |
| ASICS / GPUS | devices that can mine this coin, with hashrate and power draw |
Finding coin ids
CoinId is the canonical id used in the site URLs — the same string as in backpow.com/{CoinId}. Multi-algorithm chains are split per algorithm (for example DGB-SHA, DGB-Scrypt). The complete list is in sitemap-coins.xml and browsable at /coins.
Freshness and caching
Data refreshes daily. Responses are served with Cache-Control: public, max-age=1800. Endpoint URLs are stable — treat the shape as a contract; we will not rename them without notice.
Terms — short version
- Use it freely, including in AI assistants, research, articles and apps.
- Cite BackPoW with a link back to the relevant page.
- Quote figures together with the date retrieved — the numbers move.
- It is a data source and a calculator, not financial advice.