Central Ledger
Web3 / blockchain technology
A central ledger is a single, authoritative record-keeping system where one entity maintains the master copy of all transactions and account balances. Traditional banks, payment processors, and government financial institutions operate central ledgers, requiring users to trust that the custodian accurately records their transactions and doesn't alter historical records or freeze accounts arbitrarily. Central ledgers provide efficiency and standardization but create single points of failure, censorship risk, and systemic vulnerability. All participants must reconcile against this one source of truth, granting the ledger operator significant power over the financial system. Example: A traditional commercial bank maintains a central ledger where all customer accounts, balances, and transaction histories are stored in centralized databases. The bank is the sole authority determining account states and has the power to reverse transactions or restrict access. Why it matters for blockchain technology: Central ledgers represent the traditional financial model that blockchain technology directly challenges. By contrast, distributed ledgers eliminate single points of control, enabling censorship-resistant systems where no entity can unilaterally alter transaction history or freeze funds based on authority alone.
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