基本面关键指标包含23个：
```
name,code
Total Bitcoins,TOTBC
Bitcoin Market Price USD,MKPRU
Bitcoin Average Block Size,AVBLS
Bitcoin Median Transaction Conf. Time,ATRCT
Bitcoin api.blockchain Size,BLCHS
Bitcoin Cost Per Transaction,CPTRA
Bitcoin Cost % of Transaction Volume,CPTRV
Bitcoin Difficulty,DIFF
Bitcoin Estimated Transaction Volume,ETRAV
Bitcoin Estimated Transaction Vol. USD,ETRVU
Bitcoin Hash Rate,HRATE
Bitcoin Miners Revenue,MIREV
Bitcoin Market Capitalization,MKTCP
Bitcoin My Wallet Number of Tx Per Day,MWNTD
Bitcoin My Wallet Number of Users,MWNUS
Bitcoin My Wallet Transaction Volume,MWTRV
Bitcoin Number of Unique Addr. Used,NADDU
Bitcoin Number of Transactions,NTRAN
Bitcoin Total Number of Transactions,NTRAT
Bitcoin Number of Tx per Block,NTRBL
Bitcoin Tx Excluding Popular Addresses,NTREP
Bitcoin Total Output Volume,TOUTV
Bitcoin Total Transaction Fees,TRFEE
Bitcoin Total Transaction Fees USD,TRFUS
Bitcoin USD Exchange Trade Volume,TRVOU
```
```
import dai
date = dai.query("SELECT * FROM bitcoin_key_metrics WHERE date = '2024-04-29' ORDER BY date ").df()
date
```
