Every transfer on a public blockchain is publicly verifiable, giving the crypto market a “transparent ledger” rarely seen in traditional finance. But public data doesn’t automatically make the conclusions clear: the same set of on-chain data can be interpreted in different ways, leading to completely opposite conclusions.

All transfers of $BTC are publicly recorded on-chain, and anyone can look them up using a block explorer. Currently 73,557.8 (24h -1.92%).

▍What Can You See On-Chain?

In a block explorer, you can look up the balance and transfer history of any address, as well as see which transactions are included in each block. Building on these raw records, data platforms calculate various metrics: net exchange inflows, the number of active addresses, large transfers, how many coins have been inactive for a long time, and more.

Every unspent transaction output (UTXO) in Bitcoin can be traced to the block in which it was created, which tells us when those coins last moved. This makes it possible to estimate how many coins have remained untouched for a long time. On account-based blockchains like Ethereum, you can directly see how each address’s balance changes.

▍Some common metrics

Net exchange inflow is the amount of coins transferred to exchange addresses over a period minus the amount transferred out. It is often used to gauge potential selling pressure. Net outflow is often interpreted as coins being withdrawn to their owners’ own wallets for safekeeping.

The number of active addresses counts the addresses that made transfers over a given period and is often used as a measure of network usage. “Whales” generally refers to addresses or entities holding large amounts of a particular token, but there is no universal standard for how much qualifies as whale-sized.

▍What it doesn’t tell you

An address is not the same as a person: one person can have many addresses, and an exchange address may hold the assets of many users. Trades within an exchange and over-the-counter transactions do not appear on-chain.

A large transfer to an exchange could mean the holder is preparing to sell, but the funds could also be used as margin for derivatives, for a market maker to rebalance, or simply as part of the exchange’s wallet management. Labels assigned to addresses by data platforms can also be wrong.

▍How to use it responsibly

Compare multiple metrics and cross-check them against price and trading volume. When you see breaking news about “whale activity,” first find out who owns the address and where the coins ended up. On-chain data is a clue, not a conclusion—and certainly not a reason to place a trade.

▍In closing

The greatest value of on-chain data is that “you can verify it yourself.” Rather than trusting a one-line news alert, learn to open a block explorer and check the transaction yourself. Be skeptical of claims promising consistently high returns.

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