Definition ∞ Verifiable inclusion refers to the ability to cryptographically prove that a specific transaction or data element has been incorporated into a blockchain block and, consequently, into the immutable ledger. This proof ensures that the transaction has been processed and is permanently recorded. It provides a high degree of assurance regarding data integrity.
Context ∞ Verifiable inclusion is a core security property of blockchain technology, ensuring that once a transaction is confirmed, its presence in the ledger cannot be denied or altered. This concept is vital for the integrity of financial transactions, digital asset ownership, and decentralized application states. Advanced cryptographic techniques continue to refine the efficiency and certainty of verifiable inclusion proofs.