{
    "format": "ieunit-receipt/1",
    "id": "2026-10-27",
    "receipt": "{\"format\":\"ieunit-receipt/1\",\"id\":\"2026-10-27\",\"seq\":14,\"date\":\"2026-10-27\",\"run\":1,\"created_at\":\"2026-10-27T23:30:03Z\",\"prev_fingerprint\":\"a7580e6cd5b570cbcbec8dc995433613be804ecf18ef5ad6b53b3add226f5ed0\",\"service_version\":\"1.2\",\"method\":\"geometric_mean\",\"formula\":\"ieunit_usd = exp( (1/N) * sum( ln(price_i / reference_i) ) ), N = 9\",\"base_date\":\"2017-01-10\",\"unit\":\"USD per unit; Gold and Silber per troy ounce\",\"rules\":{\"definition\":\"USD is the unit of account (1 by definition)\",\"single\":\"one source delivered a price\",\"median\":\"median of all sources that delivered a price\",\"fallback\":\"no source delivered; last valid price kept\"},\"components\":{\"USD\":{\"reference\":1,\"price\":1,\"rule\":\"definition\",\"sources\":{}},\"EUR\":{\"reference\":1.05886209,\"price\":1.1150012265013491,\"rule\":\"single\",\"sources\":{\"frankfurter\":{\"value\":1.1150012265013491,\"as_of\":\"2026-10-27\"}}},\"JPY\":{\"reference\":0.0086218,\"price\":0.006336332530731213,\"rule\":\"single\",\"sources\":{\"frankfurter\":{\"value\":0.006336332530731213,\"as_of\":\"2026-10-27\"}}},\"CHF\":{\"reference\":0.9861544,\"price\":1.2068403712240983,\"rule\":\"single\",\"sources\":{\"frankfurter\":{\"value\":1.2068403712240983,\"as_of\":\"2026-10-27\"}}},\"CNH\":{\"reference\":0.14416077,\"price\":0.14998125234345705,\"rule\":\"single\",\"sources\":{\"frankfurter\":{\"value\":0.14998125234345705,\"as_of\":\"2026-10-27\"}}},\"BTC\":{\"reference\":907.67901611,\"price\":80826.2475,\"rule\":\"median\",\"sources\":{\"coinbase\":{\"value\":80822.495},\"kraken\":{\"value\":80830}}},\"ETH\":{\"reference\":10.63,\"price\":2348.215,\"rule\":\"median\",\"sources\":{\"coinbase\":{\"value\":2348.44},\"kraken\":{\"value\":2347.99}}},\"Gold\":{\"reference\":1184.19995117,\"price\":4075,\"rule\":\"single\",\"sources\":{\"yahoo\":{\"value\":4075,\"as_of\":\"2026-10-27T04:00:00Z\"}}},\"Silber\":{\"reference\":16.8029995,\"price\":54.525001525878906,\"rule\":\"single\",\"sources\":{\"yahoo\":{\"value\":54.525001525878906,\"as_of\":\"2026-10-27T04:00:00Z\"}}}},\"result\":{\"ieunit_usd\":3.915722,\"ieunit_chf\":3.2446,\"ieunit_eur\":3.5119},\"sources\":{\"frankfurter\":\"https://api.frankfurter.dev/v1/latest?base=USD&symbols=EUR,JPY,CHF,CNY (ECB reference rates; CNY as proxy for CNH)\",\"coinbase\":\"https://api.coinbase.com/v2/prices/{BTC|ETH}-USD/spot\",\"kraken\":\"https://api.kraken.com/0/public/Ticker?pair=XBTUSD,ETHUSD (last trade)\",\"yahoo\":\"https://query1.finance.yahoo.com/v8/finance/chart/{GC=F|SI=F} (last daily close, USD per troy ounce)\"}}",
    "fingerprint": "6b08ea4d45fc215f8a0eaac262dd2adb10f96cd2343a7e7cb2aa5fcde7047ded",
    "signature": "9nCiCRXUINQ0EgKYpOu41ZqA+bNxKyGmMqtgVuEDEZz1P1h7VIqgC7bXumQ1ljK9juQTdWsDN4PdF4xUiqdHDg==",
    "algorithm": "Ed25519",
    "key_id": "1efb1cbb4a2d58b1",
    "how_to_verify": "fingerprint = SHA-256 (hex) of the exact UTF-8 bytes of \"receipt\"; signature = Ed25519 over the same bytes; public keys: https://ieunit.org/api/v1/receipts.php",
    "verify": {
        "de": "https://ieunit.org/de/belege/",
        "en": "https://ieunit.org/en/receipts/"
    }
}