Unpredictability available to generate secret keys; it is measured by the attacker’s remaining uncertainty, not by how random output looks.
Cryptographic entropy is best understood as part of a system rather than as an isolated definition. Its related coordinates show the mechanisms, incentives and historical records that give the term practical meaning.
Cryptographic entropy should be evaluated against a concrete threat model: what is protected, from whom, for how long and at what operational cost. A design may remove one dependency while introducing another, so custody, privacy and verification must be judged as a complete system.
Understanding Cryptographic entropy helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.
For the clearest picture, read this entry together with Bits of entropy, Random-number generator, Cryptographically secure PRNG, Wallet seed generation. The reverse links also lead from Dice-roll entropy, Bits of entropy, Random-number generator, Cryptographically secure PRNG.
Linked to related atlas coordinates
Grounded in source data
Explains function and trade-offs
Part of the open Bitcoin knowledge graph