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API · /bitcoinhalving-api

Bitcoin Halving API

healthy 3,756 Subscribers

Live Bitcoin halving countdown and supply schedule as an API, computed from the on-chain block height (mempool.space). Bitcoin's block subsidy halves every 210,000 blocks (~four years); this returns the current subsidy in BTC, the halving epoch, the next halving's block height, how many blocks and roughly how long remain (using the network's recent average block time), and the estimated date. It also computes the circulating supply mined to date from the issuance schedule, the percent of the 21-million cap already mined, the daily and annual new issuance and the inflation rate, plus the full halving schedule. The Bitcoin issuance-and-halving layer for crypto, dashboard and countdown apps. Live, no key, no cache. Distinct from fee and mempool Bitcoin APIs — this is the supply and halving schedule.

#bitcoin #halving #supply #block-reward #issuance #on-chain #mempool #crypto
api.oanor.com/bitcoinhalving-api
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Machine-readable spec so AI agents can integrate this API.

/api/bitcoinhalving-api/openapi.json
/api/bitcoinhalving-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
174 ms
Server probes · 24h
Subscribers
3,756
active
Total calls
24
last 7 days
status Full status page → · 12 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 6,000 calls / month
  • 5 requests / second
  • Hard cap (429 above quota, no overage)
  • 6k calls/month
  • 5 req/sec
  • All endpoints
  • No credit card
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Starter

€12.00 /month

  • 85,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 85k calls/month
  • 15 req/sec
  • Email support
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Pro

€30.00 /month

  • 450,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 450k calls/month
  • 40 req/sec
  • Priority support
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Desk

€70.00 /month

  • 2,400,000 calls / month
  • 100 requests / second
  • Hard cap (429 above quota, no overage)
  • 2.4M calls/month
  • 100 req/sec
  • Dedicated SLA
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Live "real" market exchange rates derived from local cryptocurrency (BTC/USDT) trading. Because they are implied by where people actually buy and sell crypto, these rates track the true street/parallel value of a currency — for stressed currencies (Argentine peso, Nigerian naira, Venezuelan bolívar, Lebanese pound …) this is far from the official rate. The rates endpoint returns one base currency against ~130 currencies plus the BTC price; the convert endpoint converts any amount between two currencies; the btc endpoint returns the BTC price in a chosen currency (the crypto bridge that powers every rate); the currencies endpoint lists every supported currency. Read live, nothing stored. This is a global crypto-implied real-rate layer — distinct from official ECB/central-bank rate feeds and from single-country parallel-dollar APIs.

api.oanor.com/yadio-api

Bitcoin Stats API

Live Bitcoin on-chain economics and network-activity statistics, built on the open blockchain.com dataset — the macro on-chain layer, not raw address or mempool lookups: a live network snapshot (24h transaction count and USD volume, hash rate, market price and cap, total mined supply, miners' revenue), the historical time series of any curated on-chain metric (active addresses, transaction volume, UTXO-set size, mempool size, miner revenue, fees and more), the catalog of available metrics, and Bitcoin's issuance state (total mined, share of the 21M cap, current block reward and estimated next halving).

api.oanor.com/bitcoinstats-api

Bitcoin Mining API

Live Bitcoin mining and hashrate analytics, built on the open mempool.space dataset — the mining layer, not address or mempool data: the mining-pool dominance ranking by share of blocks mined over a period, the current network hashrate and difficulty plus their history, the history of difficulty adjustments with each retarget's percentage change, and block-reward economics over the last N blocks (total and average reward, fees and transactions).

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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Bitcoin Halving API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Bitcoin Halving API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Bitcoin Halving API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Bitcoin Halving API cost?
Bitcoin Halving API has a free tier with 100 calls / month. Paid plans start at €12.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Bitcoin Halving API GDPR-compliant?
All requests to Bitcoin Halving API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/bitcoinhalving-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/bitcoinhalving-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/bitcoinhalving-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/bitcoinhalving-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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