Age of coins (how long coins have been dormant)

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Network Health & Mining Data:
Hash rate (total computing power securing the network).
Mining difficulty.
Block height (the latest block number).
Average block time.
Miner revenue.
Number of unique miners/mining pools.
Supply Metrics:
Circulating supply.
Total supply.
Inflation rate.

UTXO Set Data: Information albania phone number list about the unspent transaction outputs, which are the actual spendable bitcoins.
Mempool Size: The number of unconfirmed transactions waiting to be included in a block.
Where to get Blockchain Data Feeds (APIs are common):

Blockchain Explorers (APIs): Many popular blockchain explorers offer APIs to access their indexed blockchain data.
Blockchain.com API: Provides a wide range of Bitcoin blockchain data (transactions, blocks, addresses, mining stats).
BlockCypher API: Offers APIs for Bitcoin and other blockchains, including transaction data, address balances, and block information.
On-Chain Analytics Platforms: These platforms specialize in collecting, processing, and visualizing blockchain data for advanced analysis. They often provide APIs for raw data access.