Ledger security encompasses the measures and protocols implemented to protect a distributed ledger from unauthorized access, alteration, or manipulation. This includes cryptographic techniques, consensus mechanisms, and network architecture designed to ensure the integrity, confidentiality, and availability of transaction data recorded on a blockchain or DLT. It safeguards against various attacks, such as double-spending and data tampering. Robust ledger security is paramount for maintaining confidence in digital asset systems.
Context
Ledger security is a constant priority for all blockchain networks, with continuous research into more resilient consensus algorithms and advanced cryptographic primitives. News often covers security breaches or vulnerabilities discovered in specific protocols, highlighting the persistent need for vigilance and system hardening. The debate also involves the trade-offs between achieving high security levels and other factors like scalability and transaction speed.
Proof of Quantum Work leverages quantum supremacy to secure the ledger, solving classical PoW's energy crisis and quantum-proofing the consensus layer.
A novel protocol integrates PBFT with threshold signatures, enabling confidential, fault-tolerant consensus in permissioned distributed ledgers for finance.
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