Tangem Wallet Pack of 2 - Secure Crypto Wallet - Trusted Cold Storage for Bitcoin, Ethereum, NFT's &

Tangem Wallet Pack of 2 - Secure Crypto Wallet - Trusted Cold Storage for Bitcoin, Ethereum, NFT's &
Key item features Ultimate Security: Generates a private key that remains on the card, safeguarding crypto and NFTs from hackers with EAL6+ certification and audited firmware. Versatile Compatibility: Manages over 13,000 tokens across 70+ blockchains, supporting DeFi, NFTs, and DeEx without wires, Bluetooth, or USB. Effortless Operation: Utilizes NFC for secure transactions via a mobile device and the Tangem app, enabling buying and selling crypto with various payment methods. Smart Backup: Features a second Tangem Wallet as a backup, eliminating the need for paper, pictures, or seed phrases for recovery. Durable Design: Boasts IP68 protection against environmental conditions, ensuring longevity and robust physical security. Comprehensive Support: Compatible with Bitcoin, Ethereum, Solana, XRP, USDT, and over 6,000 cryptocurrencies, integrating with dApps and WalletConnect.

LBANK

LBANK

Do miners calculate the balance including the mempool?

Let's say you got 1 BTC. And you do the following:

  • Send a transaction of 1 BTC to address A; fee: 1 sat/byte

If you'd only calculate what's in the blockchain, you'd still have a balance of 1 BTC. But if you also include the mempool you'd have a balance of 0.

Am I now able to send a second transaction, such as:

  • 1 BTC to address B, fee: 1000 sat/byte

The second transaction would likely be confirmed first; what would then happen to the first one? Would it simply be lost since now I don't have enough balance anymore?



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