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1️⃣ Mindset Shift: Ethereum's security and interoperability revolve around addresses. Contracts meticulously monitor access and authorisations, which must be done carefully. 🚦🔐
2️⃣ Transaction Authorisation: Transactions in Ethereum depend on authorised users, identified as msg.sender. Explicit coding is essential for seamless user-contract or contract-contract interactions to ensure proper approvals before engaging with a contract. 💼💡
3️⃣ Contract-based Storage: User ownership in Ethereum is tracked through mappings like the owner to balance or token ID to the owner, akin to a bank balance record. Crypto wallets consolidate token balances, providing users with a convenient and secure overview. 💰🔒