The mechanical parts of keeping your own ledger, written out: how to get a CSV of your history out of an exchange without handing over API keys, and what the arithmetic does with it once it is in.
What makes a tracker private — API keys, wallets, who can read your amounts, how you pay, how you leave — and how Perly answers each.
The two common ways to compute cost basis, the honestly different PnL they give from the same history, and which one Perly uses.
Where the export lives, how Binance chunks long histories, and what to glance at in the file before importing it anywhere.
Getting the transaction report out of Coinbase, and what its columns mean for cost basis.
Kraken's ledger and trades exports, which one an import wants, and the fields worth checking first.
© 2026 Perly. All rights reserved.