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How a crypto deposit works: addresses, networks, memos and confirmations

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Short answer

A crypto deposit is a transfer to an address the receiver generated for you. It credits after a set number of blockchain confirmations, which the receiver chooses. Match the coin, the network and any memo exactly, send a small test first, and wait for the credit before sending more.

Bitcoin block timeAbout 10 minutes
Ethereum finalityAbout 15 minutes
Tron solidificationAbout 1 minute
Always send firstA small test

Updated October 23, 2026 · 5 min read

A deposit is an ordinary blockchain transfer to an address that the receiving platform created for you. Nothing is “sent to your account” in the bank sense. The platform watches the chain, sees your transfer, waits for enough confirmations, then adds the amount to your balance. Each step below is a place where a small mistake costs real money.

This page covers the mechanics only. It does not tell you where to bet, and it cannot make an unlicensed operator legal: see are offshore sportsbooks legal.

1. The deposit address

The platform shows you an address for one coin on one network. Many platforms generate a unique address per user, so the system knows whom to credit. Treat it as a bank account number that you copy, not retype.

  • Copy and paste, or scan the QR code. Then compare the first six and last six characters with what your wallet shows before you confirm.
  • Malware can swap a copied address for the attacker’s. The comparison is your defense.
  • Do not reuse an old address without checking. Platforms sometimes retire addresses, and your deposit page is the only reliable source.

2. The network must match

The same coin can live on several blockchains. USDT exists on Tron, Ethereum and others, and the copies cannot see each other. The platform’s deposit page names the network it watches. Your wallet must send on that network. Address formats help you check: a Tron address starts with T, and an Ethereum address starts with 0x. The detail is in TRC-20 vs ERC-20. If you picked the wrong one, read sent to the wrong network straight away.

3. Memo and tag fields

Some chains let many customers share one address. The platform tells them apart with an extra number or text, called a memo, tag or destination tag. The XRP Ledger documentation describes a destination tag as a 32-bit number that identifies the beneficiary of a payment, so a business can use one address for many customers. Without the tag, the receiver may not know whom to credit.

Bitcoin, Ethereum and Tron deposits normally do not need a memo, and a platform that shows one for those coins is the exception. If the deposit page shows a memo field, it is required, and it must be copied exactly. A missing memo usually leaves your funds on the chain but unassigned, and fixing that means a support ticket.

4. Confirmations: how long it takes

A confirmation means your transfer is in a block. Each later block adds one more. The platform decides how many it wants before crediting you. The chain facts below are from the official sources. The platform’s own count is on its deposit page and can be different, so use that number.

ChainWhat the official docs sayPractical wait
BitcoinA new block comes about every 10 minutes on average. For high-value payments, wait for at least six confirmationsAbout 10 minutes for one, about an hour for six
EthereumBlocks come every 12 seconds. A block is finalized after about 15 minutesSeconds to be included, about 15 minutes for finality
TronA block is solidified once at least 19 distinct active Super Representatives have built on it, which typically takes about 1 minuteAbout a minute

Bitcoin’s developer guide also says that a transaction with zero confirmations should generally not be trusted, and that one confirmation still leaves some double-spend risk. That is why platforms choose their own counts. They also change them. A platform may accept a small Bitcoin deposit after one or two confirmations and ask for more on a large one.

Slow is not the same as lost. A transfer that has not appeared after the expected time is usually either unconfirmed (low fee, busy network) or confirmed but waiting for the platform’s count. Paste the transaction ID into a block explorer to find out which. Withdrawal delays shows what to read on one.

5. Minimum deposits

Platforms set a minimum per coin. A deposit below it can be ignored by the system, and getting it back can take a support request or never happen. The minimum is on the deposit page. Check whether the fee is paid on top of the amount or taken out of it, so the platform receives at least the minimum.

6. The test send

A test send costs a little and removes most of the risk. The routine:

  1. Send $5 to $10 of the coin on the exact network.
  2. Wait until it shows in your balance, not only on the explorer.
  3. Send the rest.

The extra fee is the price of finding out that the address, network and memo are right. See network fees explained for how much that fee runs.

A worked example

You want to deposit $200 of USDT on Tron. All figures are illustrative.

  • Test send: 10 USDT with a network cost of about 1 USDT. It appears after roughly a minute.
  • Main send: 190 USDT with a second cost of about 1 USDT. It credits after the platform’s own confirmation count.
  • Total network cost: about 2 USDT, or 1% of $200. Without the test, it would have been about 1 USDT, or 0.5%.

The extra $1 is cheap next to losing $190 on a wrong address.

Records

Write down the date, coin, network, amount, address and transaction ID for each deposit. A deposit is a transfer between your own wallet and a platform, and you will want the record for tax records and to answer any exchange questions on the way back, as covered in cash out to bank.

Common questions

How many confirmations does a deposit need?

It depends on the platform and the coin, and the deposit page states the number. Bitcoin’s own developer guide recommends at least six for high-value payments. A smaller platform may credit sooner and a larger one may wait longer for big amounts.

My transaction is confirmed on the explorer but not in my balance. Why?

The platform may need more confirmations than the explorer shows, or the deposit may be waiting on a memo match or a manual review. Check the platform’s required count first, then contact support with the transaction ID.

Can I cancel a crypto deposit?

No. A confirmed blockchain transfer cannot be reversed by you or by a wallet provider. If an unconfirmed transfer is stuck, some wallets can replace it with a higher fee. Otherwise only the receiver can send the money back.

Sources

  1. Bitcoin.org developer guide: Payment processing
  2. Bitcoin.org: Vocabulary (confirmation)
  3. ethereum.org: Single slot finality
  4. Tron developer docs: Transaction protocol
  5. XRP Ledger: Source and destination tags

Checked October 23, 2026. Laws, fees and tax rules change; confirm anything you act on with the source. Information, not legal or tax advice.