How the "cancel BTC" scam works

• Legend: "We have a private account and can transfer funds BTC after we get paid. We need a worker/partner—30–40% is yours."

• In practice, they use 0-conf transactions: as long as a transaction hasn’t been confirmed, it can be replaced or blocked by a fee, but that’s controlled by the scammer, not you.

• They show you a “demo” using small amounts: they send a small amount, then “cancel” it (they simply replace the transaction, so it never reaches the blockchain). You believe you’ll be able to do the same with large sums.

• During the battle, you send a normal amount of BTC to the “mammoth,” thinking you’ll be able to reverse the transaction later. The scammer charges a standard fee, the transaction goes into the blockchain, and once it’s there, you can’t reverse it—it just disappears.

The option using wallets and 0-conf

• Skamer writes: “I’ll send BTC first; as soon as you see it in your wallet, send me USDT/fiat—the rate is great, and the bonus goes to you.”

• Strictly requires the use of a specific wallet (Atomic, Exodus, etc.) that displays incoming transactions before they are confirmed.

• He sends BTC with a minimal fee or with the intention of replacing the transaction. You see the "top-up," think the coins are already yours, and send him USDT/rubles.

• After that, he cancels or replaces his raw transaction; nothing is recorded on the blockchain at your address, but he already has your money.

A quick checklist to avoid being scammed

• Don’t believe the hype about “canceling BTC” or the stories about a “private blockchain feature”—there’s no such thing.

• 0 confirmations = no funds yet. Don’t send anything until you have at least 1–3 confirmations.

• Always verify transactions in a blockchain explorer using the TXID, not just through your wallet interface.

• Any scheme that goes something like “let’s scam the rich together” almost always ends with you realizing that you’re not the one doing the scamming.

• For large transactions, use legitimate P2P platforms or escrow services, not those “legendary Telegram channels.”