Which EUR series this block used

Whether the euro price for this block came from a real euro order book or was the dollar price converted at the ECB rate. Mostly 2011 to 2013 needed the conversion.

Definition1 = eur_native (a real BTC-EUR book), 2 = eur_synthetic (USD x ECB FX), 0 = no price. Native is primary and goes NULL past 24 hours of staleness, which is 17,924 blocks. Every EUR metric in this tier used this rule and no other.

LimitThis is a diagnostic. It does not tell you a euro number is wrong, only which route it took.

Unitraw