How are you using coinbase or similar

Hey all,
I’ve got coinbase working however how do others use this?
I’m not sure how to convert my coinbase BTC amount over to USD/GBP (to give it a “real” value)
Ideally I would then put it into a graph

- platform: template
    sensors:
      wallet_gbp:
        entity_id: sensor.coinbase_btc_wallet
        value_template: '{{ states.sensor.coinbase_btc_wallet.attributes["Balance in native currency"] }}'
        friendly_name: BTC Wallet Balance
        unit_of_measurement: '£'
        icon_template: mdi:currency-btc
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thank you!!