Block Explorer

Block Explorer (blockexplorer.com) is one of the original Bitcoin blockchain explorers, providing investigators with direct access to raw Bitcoin blockchain data including address balances, transaction histories, block details, and mempool information.

For OSINT investigations involving Bitcoin transactions, Block Explorer allows investigators to look up any Bitcoin address and retrieve its complete transaction history from genesis to the present. Each transaction record includes the sending and receiving addresses, the value transferred, the block height and timestamp, and the transaction fee paid. This data is immutable and publicly accessible for any address ever used on the Bitcoin network.

Investigators working financial crime cases use Block Explorer to document the chain of custody for Bitcoin funds. When a subject claims to have sent funds to a particular address, the blockchain provides an objective, tamper-proof record that either confirms or contradicts that claim. When investigating fraud, the transaction history reveals when funds moved, in what amounts, and to which subsequent addresses.

Block Explorer is particularly useful for identifying transaction patterns. Large, round-number transactions followed by rapid disbursement to multiple addresses are characteristic of money laundering layering. Addresses that receive many small inputs and consolidate them into one large output are consistent with coinjoin or mixing behavior. Regular periodic transactions of equal amounts suggest automated payment systems.

For each address of investigative interest, record the total received, total sent, current balance, number of transactions, and the first and last transaction timestamps. These metrics establish the activity profile of the wallet and help characterize its likely use.

Block Explorer does not provide entity attribution — it cannot tell you who owns an address, only what transactions it has conducted. Pair it with attribution tools like Wallet Explorer (clustering), Arkham Intelligence (entity labeling), or Bitcoin Who's Who (scam database) for complete investigative coverage.

Preserve your findings by recording transaction IDs, block heights, and timestamps rather than just screenshots, as these can be independently verified.