Bitcoin network guide for crypto exchanges
Bitcoin mainnet moves native BTC through transactions built from unspent outputs. An exchange route must distinguish that network from Lightning invoices and wrapped Bitcoin tokens.
Reviewed September 1, 2026 · Primary source linked below
Native fee asset
BTC
Asset model
Native BTC and UTXOs
Network identity
Bitcoin is its own blockchain, not an EVM token network. A mainnet deposit is observed on the public Bitcoin ledger and spends native BTC from one or more UTXOs. The exchange waits for detection and a route-specific number of block confirmations before conversion.
Address rules
Common receiving formats begin with 1, 3, bc1q or bc1p. Wallet support determines which format it can generate and spend. Copy the complete address from the intended receiving wallet and verify it on the trusted wallet screen.
Fee mechanism
The sending wallet pays a miner fee in BTC. Cost depends mainly on transaction size in virtual bytes and current demand for block space, not only on the BTC amount. Several small UTXOs can make a transaction larger.
Settlement
A broadcast transaction can appear in a wallet before it enters a block. Each new block adds a confirmation. Provider thresholds vary by amount and risk, so the private order tracker is the source of truth.
Memo or tag
Native Bitcoin transfers do not use an exchange memo or destination tag. The address and amount are the routing data. Do not put an invoice, Lightning address or unrelated note in place of a BTC address.
Tokens and representations
Lightning BTC uses invoices on a payment-channel network. WBTC, BTCB and other wrapped forms are tokens on separate chains. None should be sent to a native Bitcoin deposit unless the exact route explicitly supports it.
MOST COMMON ROUTE ERROR
What usually goes wrong
The most expensive category error is treating every asset labelled BTC as native Bitcoin. Another frequent problem is paying an expired order or reusing an old deposit address.
CONCRETE EXCHANGE EXAMPLE
Follow both legs of the route
For a BTC-to-ETH order, the deposit side can show a bc1 Bitcoin address while the payout side shows an Ethereum 0x address. BTC is sent only to the generated Bitcoin deposit; the provider later creates a separate ETH payout transaction.
BEFORE YOU SEND
Bitcoin checklist
- Confirm Bitcoin mainnet on the deposit or payout selector.
- Verify the full BTC address on the wallet screen.
- Leave enough BTC for the wallet-selected miner fee.
- Follow confirmations in the private order tracker.
BITCOIN FAQ
Network-specific answers
Is a bc1 address always valid for a Bitcoin exchange?
It is a native Bitcoin address format, but the sending wallet and receiving service must support the specific SegWit or Taproot format shown.
Why can a small BTC payment have a high fee?
Bitcoin fees depend on transaction size and block demand. Spending many UTXOs can create a larger transaction even when the payment value is small.
Can I send Lightning BTC to a mainnet deposit?
No. Lightning invoices and Bitcoin-mainnet addresses represent different payment routes and are not interchangeable.
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