Erro de bitcoin: como um usuário perdeu US $ 60 mil em taxas e viveu para contar a história!

Takeaways -chave

• Bem, pessoal, uma pequena confusão com unidades de taxas levou a uma carteira mais leve em mais de US $ 60.000 durante uma transação de substituição por taxa. Não é isso uma piada? 🤦‍♂️

• Nosso querido usuário confundiu SAT/VB (taxa por byte) com o total de Satoshis, resultando em uma taxa que poderia comprar um pequeno iate! 🚤

• rbf troca uma transação para uma versão mais cara, enquanto o CPFP adiciona uma nova transação para dar um impulso ao original; Cada um tem suas próprias peculiaridades e riscos, como um gato com duas caudas. 🐱‍👤

• Atenha-se às carteiras confiáveis, verifique duas unidades de taxa e deixe a carteira fazer o trabalho pesado. Não entre em pânico, mantenha -se informado e sempre verifique antes de pressionar o botão “Enviar”! 💸

No golpe de meia-noite meia em 8 de abril de 2025, um usuário do Bitcoin achou que aceleraria uma transação usando a taxa de reposição (RBF). Em vez de um empurrão suave, sua carteira foi e gastou 0,75 Bitcoin (BTC), que é de US $ 60.000 a US $ 70.000, tudo em taxas. Fale sobre um erro caro! 💰

Como na tarnação isso acontece assim? E mais importante, como você pode evitar essa armadilha? Vamos desvendar este fio.

Por que um usuário do Bitcoin acabou pagando US $ 60.000 em taxas?

Essa pobre alma queria enviar 0,48 BTC (cerca de US $ 37.770 naquela época) usando o recurso RBF do Bitcoin. Essa pequena ferramenta bacana permite reenviar uma transação com uma taxa mais alta se o original estiver preso no mempool (a sala de espera por transações não confirmadas). Mas oh garoto, as coisas vão para o sul! 🐦

A linha do tempo:

• Primeira transação : enviado com uma taxa padrão, não alta o suficiente para fazer as rodas girarem rapidamente.

• Primeira tentativa do RBF : dobrou a taxa e mudou o endereço do destinatário. Um caso clássico de “Vamos consertar!”

• Segunda tentativa rbf : Adicionado uma saída de transação não gasta (UTXO), cerca de 0,75 BTC, mas esqueceu de enviar a alteração de volta ao seu próprio bolso. Oopsie Daisy! 😅

O resultado? Que 0,75 BTC foi tratado como uma taxa e enviado aos mineiros como um filhote de cachorro perdido. 🐶

A Anmol Jain, um grande queijo na empresa forense da criptografia Amlbot, disse ao Cryptomoon que nosso usuário provavelmente começou com uma taxa de transação “padrão ou conservador”, que é tão comum quanto a sujeira. Então veio o erro: uma confusão na forma como a taxa foi medida.

Muitas carteiras de bitcoin permitem definir taxas de uma de duas maneiras:

• Taxa total em Satoshis (a menor unidade de bitcoin, semelhante a centavos em um dólar)

• Taxa por byte virtual (SAT/VB), que mede o quão “pesado” a transação é em termos de dados. Pesado como um saco de batatas! 🥔

Here’s where the wheels fell off, according to Jain:

“The system reads it as 30 sats total fee, which is way too low, so the user types 305000 thinking it means 30.5 sat/vB, and the wallet applies 305,000 sats/vB, which is just plain bonkers!” 🤯

In layman’s terms, the user saw a warning that their fee, a measly 30 sats total, was too low for a speedy transaction. So, in a fit of desperation, they typed in 305,000, thinking it meant “30.5 sats per byte.” But instead of a gentle adjustment, the wallet took that as 305,000 sats per byte, a monstrous fee that shattered all records and resulted in a loss of more than $60,000. Yikes! 😱

Why it matters

This little tale highlights how a minor mix-up with fee units can lead to major losses, especially when you’re typing faster than a jackrabbit on a date or fiddling with advanced wallet settings without a clue. 🐇

So if you ever adjust Bitcoin fees, double-check the unit you’re setting. Whether it’s “total sats” or “sats per byte” makes a world of difference, as this costly blunder proves.

Did you know? In September 2023, a user paid a $500,000 fee for a single BTC transaction. Turns out it was a blunder by Paxos, a crypto infrastructure company. Ain’t that a kicker? 🤭

Replace-by-fee (RBF): What Is It?

Bitcoin transactions aren’t set in stone until they’re added to a block. If a transaction is stuck, you can use RBF to resend it with a higher fee to entice miners to pick it up faster. It’s like waving a shiny coin in front of a raccoon! 🦝

Originally proposed by Bitcoin’s creator, Satoshi Nakamoto, and later formalized as “opt-in RBF” by developer Peter Todd, according to the BitGo Developer Portal.

How it works:

• You enable RBF when sending the original transaction.

• If the transaction remains unconfirmed, you can create a replacement with a higher fee.

• Miners will likely choose the higher-fee version because they’re financially incentivized to do so. Money talks, folks! 💵

But here’s the kicker: if you mess up the inputs or outputs, especially the change address, it can cost you dearly. Like losing your favorite hat in a storm! 🎩

Notably, RBF differs from child-pays-for-parent (CPFP) in that RBF replaces the original unconfirmed transaction with a higher-fee version, and only the sender can initiate it. In contrast, CPFP adds a high-fee child transaction to boost the parent’s confirmation, and can be initiated by either the sender or the receiver. It’s a family affair! 👨‍👩‍👧‍👦

Why did the Bitcoin transaction fee spike so high?

There are a few theories behind what caused this absurd fee:

• Confusion over fee units: The fee spiked likely due to a misunderstanding of fee units. Instead of setting a reasonable rate per byte, the user may have accidentally entered a large absolute value, causing the wallet to apply an excessively high fee. Talk about a blunder! 🤦‍♀️

• Forgotten change address: A crucial step in any Bitcoin transaction is specifying where to send leftover BTC (change). The user added a large UTXO for the new RBF transaction but forgot to reassign the change back to their wallet. That leftover 0.75 BTC? It got lumped into the miner’s fee. Whoopsie! 😬

• Automation gone wrong: If the wallet uses automated scripts or has bugs in how it processes RBF, a user’s input can be misread or, worse, executed without proper warnings. Like a cat on a hot tin roof! 🐱‍👤

Why RBF is controversial

The RBF feature has sparked years of debate within the crypto community. While it’s useful for fixing stuck transactions, critics like Mike Hearn (former Bitcoin developer) argued on Medium that it:

• Enables double-spending attacks, especially for in-person merchant transactions. Yikes! 😳

• Encourages miner-fraudster collusion. Sneaky, sneaky! 🕵️‍♂️

• Adds complexity, making user errors more likely. Like trying to teach a cat to fetch! 🐈

• Undermines finality, as unconfirmed transactions can be replaced. It’s like a game of musical chairs! 🎶

To address this issue, Bitcoin Cash (BCH), for example, removed RBF support and says that unconfirmed transactions are final. However, due to how mempools work, similar RBF-like replacements can still happen, even on BCH. Ain’t that a pickle? 🥒

Did you know? In November 2023, a 139 BTC transaction (worth millions) included a $3.1 million fee. Now that’s what I call a hefty price tag! 💸

How to protect yourself from high Bitcoin transaction fees

You don’t need to fear RBF, but you do need to respect it. Here are some tips to avoid becoming the next viral fee fail:

• Choose a secure Bitcoin wallet with transparent fee options: Pick reputable Bitcoin wallets that clearly display and explain fee types. No one likes a surprise! 🎉

• Understand Bitcoin fee units before sending: Learn the difference between sat/vB (satoshis per virtual byte) and total satoshis to avoid accidental overpayments. Knowledge is power! 📚

• Always double-check your transaction before confirming: Verify the recipient address, fee amount, and the change address to ensure no funds are mistakenly used as miner fees. Better safe than sorry! 🛡️

• Let the wallet suggest the fee, especially if you’re new: Most wallets offer dynamic fee recommendations based on network congestion, so use them instead of manually entering values. Trust the experts! 🤓

• Test with a small Bitcoin transaction first: Send a low-value test transaction to confirm everything is set correctly before sending a significant amount. Like dipping your toes in the water! 🌊

• Monitor Bitcoin network fees in real time: Use websites like mempool.space to check current fee rates and choose the best time to send your transaction. Timing is everything! ⏰

• Avoid panicking over slow confirmations: Bitcoin transactions can take time. Wait before resending or replacing transactions unless you’re sure it’s necessary. Patience is a virtue! 🙏

• Stay informed about wallet updates and bugs: Follow your wallet provider for updates, as software bugs or interface changes can impact how fees are calculated or displayed. Stay in the loop! 🔄

If you skip the above precautions, you could pay hundreds or even thousands of dollars in unnecessary fees, with no way to recover the loss. When it comes to Bitcoin, one small mistake can become a costly lesson. So, keep your wits about you, and may your transactions be ever in your favor! 🍀

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2025-06-17 15:19