One stablecoin's supply per chain + Ethereum/rollup split

Extraits de code

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

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

$ch = curl_init("https://api.oanor.com/stablecoinchains-api/v1/stablecoin");
curl_setopt($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/stablecoinchains-api/v1/stablecoin",
    headers={"x-oanor-key": "oanor_test_..."}
)

Exemple de réponse

Une réponse réelle de ce endpoint, capturée lors du dernier contrôle de santé.

{
    "data": {
        "note": "Native USDC supply on every tracked chain, ranked — each chain's dollars and its share of all USDC. ethereum_share_pct is how much still sits on mainnet versus the rollups and alt-L1s. USDC is dollar-pegged and read at its on-chain decimals, so supply equals dollars. Live, cached ~5m.",
        "source": "public JSON-RPC per chain (USDC contracts), keyless",
        "symbol": "USDC",
        "distribution": [
            {
                "usd": 51392209705,
                "chain": "Ethereum",
                "layer": "L1",
                "share_pct": 85.3
            },
            {
                "usd": 4260717363,
                "chain": "Base",
                "layer": "rollup",
                "share_pct": 7.07
            },
            {
                "usd": 3280562875,
                "chain": "Arbitrum",
                "layer": "rollup",
                "share_pct": 5.44
            },
            {
                "usd": 754240445,
                "chain": "Polygon",
                "layer": "altL1",
                "share_pct": 1.25
            },
            {
                "usd": 396576506,
                "chain": "Avalanche",
                "layer": "altL1",
                "share_pct": 0.66
            },
            {
                "usd": 165402875,
                "chain": "Optimism",
                "layer": "rollup",
                "share_pct": 0.27
            }
        ],
        "chains_tracked": 6,
        "dominant_chain": "Ethereum",
        "total_supply_usd": 60249709769,
        "ethereum_share_pct": 85.3
    },
    "meta": {
        "timestamp": "2026-06-12T19:35:39.900Z",
        "request_id": "d2fcf3aa-e667-4f11-9631-a0aa4cfa5e8c"
    },
    "status": "ok",
    "message": "Stablecoin retrieved successfully",
    "success": true
}