Response: {
"error": "formula {
// variable sources
$bitcoin_hash = data_feed[[oracles='FOPUBEUPBC6YLIQDLKL6EW775BMV7YOH', feed_name='bitcoin_hash']];
$eth_btc_price = data_feed[[oracles='JPQKPRI5FMTQRJF4ZZMYZYDQVRD55OTC', feed_name='ETH_BTC']];
// hash a little bit more random
$new_hash = sha256(trigger.data.seed||timestamp||$bitcoin_hash||$eth_btc_price);
} failed: error from data feed: data feed bitcoin_hash not found"
}