An algorithm whose entire output stream is fixed by its initial state; statistical randomness alone does not make that state secret or hard to enumerate.
Deterministic PRNG 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.
Deterministic PRNG 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 Deterministic PRNG helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.
For the clearest picture, read this entry together with Cryptographically secure PRNG, Cryptographic entropy, Random-number generator, COLDCARD RNG incident (2026). The reverse links also lead from Cryptographically secure PRNG, COLDCARD RNG incident (2026).
Linked to related atlas coordinates
Grounded in source data
Explains function and trade-offs
Part of the open Bitcoin knowledge graph