Sum of values of UTXO elements with the fixed script output type. At height 971508 we have that circulating supply = 20098235.49801507 =
2627.60591394[nonstandard] +
1714618.80749623[pubkey] +
4551353.16980923[pubkeyhash] +
3713718.84707810[scripthash] +
60.15838533[multisig] +
8288612.79875301[witness_v0_keyhash] +
1609325.50827546[witness_v0_scripthash] +
217918.06561810[witness_v1_taproot] +
0.53668567[witness_unknown].