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Secure the wallet and recovery backup first, then obtain a fresh Bitcoin deposit address from the exchange’s own account interface, verify the complete address and supported network on your wallet’s approval screen, and send a small test amount only if the exchange’s minimum and fee make that sensible. Wait for the test to be credited before sending the remainder. Bitcoin transfers cannot be reversed, and once the deposit is credited, the exchange—not your wallet—controls custody of the funds.
What changes when you send Bitcoin to an exchange
With a self-custody wallet, you are responsible for the private keys that authorize spending and for the recovery backup that restores those keys. Bitcoin.org recommends maintaining backups and warns that a custodial service introduces third-party risk: an exchange can control access to funds after it credits your deposit. Read its wallet-security guidance before moving a large balance.
The transfer itself does not require you to disclose a seed phrase or private key. You sign a transaction in your wallet that names the exchange’s receiving address. The exchange watches the Bitcoin network, waits for its required confirmations, and then makes the balance available for trading or sale under its account rules.
- Before sending: your wallet, keys, backup, destination address, network, amount and fee are your responsibility.
- After crediting: account security, custody, withdrawal permissions, trading fees and local compliance rules are controlled by the exchange.
Use this guide as an operational checklist, not as advice on whether selling is financially suitable.
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Prepare and secure the self-custody wallet
Confirm that you can recover the wallet
Locate the wallet’s recovery phrase or other recovery backup before initiating a transfer. It must be readable, complete and stored privately. Do not photograph it for cloud storage, paste it into a chat, or type it into a website. Anyone with the phrase or private keys can generally authorize a spend; no legitimate support worker needs either one. Bitcoin.org’s scam guidance specifically says not to share them.
If your backup is encrypted, confirm that you know the decryption method without exposing the contents. A backup that exists only on an internet-connected device can be stolen with that device or account. Bitcoin.org recommends keeping recoverable backups, encrypting online copies, and considering separate physical storage locations.
Update software and check the signing device
Install wallet updates from the wallet maker’s genuine distribution channel, then reopen the wallet and verify that the expected balance is shown. If you use a hardware wallet, inspect and confirm the transaction on the device itself, not only in the companion computer or phone application. An offline signing device reduces exposure to computer vulnerabilities, but it cannot make a wrong destination safe.
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Protect the account you will use for custody
Use a strong, unique password for the exchange account and enable its strongest available multi-factor authentication. Multi-factor authentication helps protect account login and withdrawals; it does not replace checking the deposit address on every transfer. Keep your email account and mobile number protected as well, because account recovery channels can be targeted.
Open the exchange safely and check eligibility
Open the exchange through its official app or by typing a site address you obtained independently. Do not use a deposit address delivered in an unsolicited email, advertisement, direct message or support conversation. Phishing pages can display a convincing but attacker-controlled address.
Before generating the address, confirm that your account is allowed to deposit and sell Bitcoin in your region. Eligibility, identity checks, supported assets, sale functions and withdrawal rules vary by provider and jurisdiction. The available evidence does not establish one global requirement, so read the current rules shown in your account.
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Generate the current Bitcoin deposit address
- Open the exchange’s Deposit or Receive screen.
- Select Bitcoin (BTC) as the asset. Do not choose a similarly named token.
- Select the Bitcoin network or address format that the exchange explicitly supports for that deposit. Follow the current network choices shown in the account; do not infer support from an old transaction.
- Generate or display the deposit address and copy it with the exchange’s copy control.
- Read any warning about unsupported networks, minimum deposits, address expiration or memo/tag requirements. Bitcoin deposits normally use an address, but the exchange’s own instructions control.
Help pages from Coinbase and Kraken both instruct users to choose the asset and a supported network, then copy the address displayed in the account. Their warnings also make the practical consequence clear: an unsupported or incorrect-network deposit may be lost. A prior address or a screenshot is not a substitute for the address currently shown by your account.
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Paste the copied address into your wallet’s send form, but do not press the final approval button yet. Compare the entire destination shown by the wallet with the complete address displayed by the exchange. Bitcoin.org warns that checking only the first or last few characters is insufficient: lookalike-address and address-poisoning scams are designed to exploit partial checks.
- Compare from the first character through the last, preferably by viewing both strings on separate trusted screens.
- Confirm that the wallet identifies the destination as Bitcoin and that the selected network matches the exchange’s instruction.
- Be suspicious if the pasted address changes, contains unexpected whitespace, or differs after you reopen the approval screen.
- Never let a person claiming to be support “verify” the address by asking for your seed phrase, private key or remote access.
Bitcoin.org summarizes the rule this way: “bitcoin transactions are irreversible, so verify before you send; verify the entire receiving address, not just the first or last characters; and remember that no legitimate person, business, or support team will ever ask you for your seed phrase or private key.”
Decide whether to make a test transfer
A small first transfer can limit the amount at risk if an address was copied incorrectly. It is a cautious option, not a universal requirement or a guarantee. The sources do not establish a universally safe test amount or a universal exchange minimum.
- Find the exchange’s current minimum Bitcoin deposit and any deposit fee.
- Check your wallet’s network fee estimate and confirm that the test will still be credited after fees.
- Send an amount that is meaningful enough to identify the transaction but small enough that a loss would be tolerable to you; do not assume a particular number works for every exchange.
- Save the transaction ID and wait until the exchange shows the test deposit as credited, not merely detected or pending.
- Generate or re-open the deposit screen again and recheck the address before sending the balance.
If the minimum deposit, fee or delay makes a test impractical, you can send the intended amount after performing the full-address and network checks. The test is a risk-reduction choice, not a protocol rule.
Send the remaining Bitcoin deliberately
- Enter the final amount only after the destination has passed the complete-address check.
- Review the wallet’s fee estimate, the net amount the recipient will receive and any warning about the selected network.
- Approve the transaction on the wallet. With a hardware wallet, verify the address and amount on the device display before confirming.
- Record the transaction ID, amount, destination and time in a private record. Do not publish the address or transaction details unnecessarily.
- Leave the wallet open only long enough to confirm that the transaction was broadcast, then monitor its status through the wallet or a reputable block explorer.
Do not send additional transactions merely because the exchange page still says pending. First check whether the original transaction is visible on the Bitcoin network.
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Understand confirmations, pending deposits and timing
A broadcast transaction may appear in the wallet before it is included in a block. After inclusion, the exchange may require additional blocks—called confirmations—before crediting the deposit. Each provider sets its own threshold, and that threshold can change. The current deposit instructions from Coinbase and Kraken both explain that crediting depends on required confirmations.
A pending label alone does not prove that Bitcoin is lost. Use the transaction ID to check:
- Not found on the network: the wallet may not have broadcast it, or it may still be propagating. Check the wallet’s transaction history and connection status.
- Unconfirmed on the network: the exchange may wait until a block includes it. Network congestion and the fee attached to the transaction affect how quickly that happens.
- Confirmed on the network but not credited: compare the destination, asset and network with the exchange deposit record, then follow the provider’s current deposit-support process.
- Credited: the balance is now subject to the exchange’s custody, trading and withdrawal controls.
No fixed confirmation time is reliable. Wallet fee estimates and network conditions change, and an exchange can impose its own waiting period.
Fees: what you can and cannot predict
Bitcoin.org explains in Bitcoin for Individuals that the network fee depends on transaction data size rather than simply on the amount of Bitcoin sent. A transaction that spends several inputs can therefore require more data than one spending a single input, even when the Bitcoin amount is smaller.
Your wallet normally offers a fee estimate based on current network conditions. A higher fee can encourage faster confirmation, but it does not guarantee an exact time. The exchange may charge separate deposit, sale, trading or withdrawal fees. Check those current figures in the exchange account before committing to a test or full transfer; do not treat a network fee estimate as the exchange’s complete cost.
Protect privacy while depositing
Bitcoin transactions are publicly recorded and traceable. Bitcoin.org’s privacy guidance explains that information disclosed to a service can connect on-chain activity with your identity. An exchange that verifies your identity may be able to associate the deposit with your account and later trading activity.
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- Do not post your deposit address, transaction ID, balance or screenshots publicly unless there is a specific reason.
- Assume that addresses and transfers visible to the exchange can be linked to your account.
- Use the exchange’s current deposit address rather than reusing an address copied from a public post or another person.
- Keep private notes about the transaction for your records, but store them securely.
Privacy precautions do not make a transaction untraceable, and they do not override tax, reporting or other legal obligations that apply in your jurisdiction.
Common scams and failure modes
A fake support message supplies an address
Ignore unsolicited instructions to send Bitcoin to a replacement address, pay a verification fee, or “unlock” a deposit. Close the message and obtain the address from the logged-in exchange account. Support should never need your seed phrase or private key.
The address was checked only at the beginning
Malware or a scammer can present an address that shares the first or last characters with the expected one. Compare the complete string in the wallet’s final approval screen. If any character differs, cancel and obtain a fresh address through the exchange interface.
The wrong network was selected
Asset names and network choices can look similar. Stop if the wallet and exchange do not show the same supported network. Sending on an unsupported network may make recovery impossible or require a provider-specific recovery process; never assume it will be corrected automatically.
The exchange deposit is pending
Find the transaction ID and check network confirmations before sending again. If the transaction is confirmed and the destination is correct, use the exchange’s current support instructions. Keep records of the address, amount, fee and transaction ID.
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Move the recovery backup to secure offline storage, change any credentials that were exposed, and consider moving remaining funds to a newly created wallet if you believe the keys were copied. Do not upload the phrase to a “recovery” website or disclose it to support.
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Is a hardware wallet necessary?
No. A hardware wallet is optional. Bitcoin.org describes offline wallets as a way to reduce exposure to computer vulnerabilities and hardware wallets as a balance between security and usability. Its Trezor Safe 5 listing is an example of a device that provides on-device transaction confirmation and recovery features; product details and compatibility can change.
Choose a wallet by evaluating the factors that affect this transfer:
| Decision factor | What to verify |
|---|---|
| Custody | Whether you control the signing keys or a service holds them. |
| Signing environment | Whether signing occurs on an offline device or an internet-connected phone/computer. |
| Recovery | How the wallet backs up and restores keys, and whether you can keep that backup private. |
| Compatibility | Whether the wallet’s Bitcoin address format is accepted by the exchange you selected. |
| Cost and usability | The device or software cost, setup complexity and likelihood that you will verify transactions correctly. |
A hardware wallet does not fix a poisoned clipboard, an unsupported network, a phishing page or an exposed recovery phrase. It is a signing tool, not a substitute for destination verification and backup discipline.
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If you are still choosing where to sell, compare the provider’s current terms for your country rather than relying on a global ranking. The useful questions are:
- Is your account eligible to deposit and sell Bitcoin in your jurisdiction?
- Which Bitcoin network and address formats does the deposit screen support?
- What confirmation threshold is required before credit?
- What deposit, sale, trading and withdrawal fees apply, and are any one-time or promotional?
- Which multi-factor authentication and withdrawal controls are available?
- What account holds, identity checks, tax records and withdrawal limits may affect your sale?
These details are provider- and jurisdiction-specific. Check them immediately before sending because interfaces, supported networks and thresholds can change.
A final pre-send checklist
- Recovery backup is available, private and recoverable.
- Wallet software and any hardware-wallet firmware are current.
- Exchange account is eligible for Bitcoin deposits and sales in your region.
- Deposit address came from the logged-in exchange account, not a message or screenshot.
- Bitcoin asset and supported network match on both sides.
- Complete address was compared in the wallet’s final approval screen.
- Minimum deposit, network fee and exchange fees are understood.
- Test transfer decision has been made deliberately.
- Transaction ID will be saved and monitored for confirmations.
- Seed phrase and private key remain secret.
What to do after the deposit is credited
Confirm that the exchange balance is credited before initiating the sale. At that point the Bitcoin is under the exchange’s custody and governed by its account, trading and withdrawal rules. Review the current sale price, trading fee, withdrawal destination, withdrawal fee, tax records and any local reporting requirements separately. Keep the transaction ID and exchange records together so you can reconcile the transfer later.
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