Service metadata

Code snippets

curl "https://api.oanor.com/bitcoinhalving-api/v1/meta" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/bitcoinhalving-api/v1/meta", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/bitcoinhalving-api/v1/meta");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/bitcoinhalving-api/v1/meta",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "source": "mempool.space block height + difficulty adjustment (live)",
        "service": "bitcoinhalving-api",
        "constants": {
            "max_supply_btc": 21000000,
            "initial_subsidy_btc": 50,
            "halving_interval_blocks": 210000
        },
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/supply": "Circulating supply, percent mined, daily issuance and inflation rate.",
            "GET /v1/halving": "Countdown to the next halving (subsidy, epoch, blocks/days remaining, date).",
            "GET /v1/schedule": "The full halving schedule (epoch, start block, subsidy, approx year)."
        },
        "description": "Live Bitcoin halving countdown and supply schedule from the on-chain block height (mempool.space): current block subsidy and halving epoch, the next halving's block height with blocks/time remaining and estimated date (using the network's recent average block time), the circulating supply mined to date, percent of the 21M cap mined, daily/annual new issuance and the inflation rate, plus the full halving schedule. Live, no key. Distinct from fee/mempool Bitcoin APIs — this is the supply and halving layer.",
        "upstream_status": "ok"
    },
    "meta": {
        "timestamp": "2026-06-09T03:02:15.754Z",
        "request_id": "accf0adb-8dcf-41c5-ae4d-36817ee23c15"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}