The gap

Every conventional authentication system treats identity as a secret you hold and present: a password, a private key, a certificate, or a biometric template stored in a database. Prove you hold the secret, and you are who you claim to be. That model has one structural flaw — the secret can be stolen. The database can be breached, the key can be harvested today and decrypted later once quantum computing matures, the template can be lifted from the store that holds it. Making the secret harder to steal does not fix the architecture; it only raises the cost of the breach.

Behavioral biometrics attempt to escape the stored-secret problem by scoring how a person behaves, but they remain forgeable: behavior observed in the moment can be mimicked, and the reference profile still lives in a database that can be breached. The field lacks an identity primitive that has nothing to issue, nothing to store, and nothing that can be copied or faked from a single point.

The invention

Keyless Identity derives identity from continuity of behavior rather than a held credential. Each successor in a dynamic agent hash chain is computed by hashing the prior hash together with locally retained unpredictability — a hardware anchor combined with a volatile salt, or a local state vector passed through a strong extractor — and a domain-separating tag. The resulting chain can only be reproduced by a party that retains the same non-exported local unpredictability and has witnessed the chain advance, so identity accumulates over time as a cryptographically committed history of continuity rather than a discrete object stored in one place.

The mechanism is stateless and self-recovering. It is deployable across stateless execution fabrics, including ephemeral edge workers, serverless functions, and relay nodes, with identity validated as progression along a trust slope formed from locally retained unpredictability, without reliance on centralized authorities, long-lived credentials, or synchronized ledgers. To constrain linkability, the hash presented in transport headers rotates on a fixed cadence with recorded forward links, preventing persistent correlation of activity while preserving verifiable continuity, and failure responses are opaque and do not leak rekey status. Periodic checkpoint anchors let a party who goes offline or switches networks reconstruct continuity from the last verified checkpoint under bounded proofs, without resetting the identity relationship.

The inventive step

The novelty is a memory-native two-stage authentication method in which a dynamic agent hash chain governs identity continuity, incorporating unpredictability contributions and volatile salts, with trust-slope reconstruction and policy-bounded continuity validation performed at the recipient. Prior approaches — secure-element credential stores, hardware-bound firmware identity, and behavioral scoring — each retain a stored or presentable secret and do not reach this configuration, individually or in combination.

Because identity is reconstructed from witnessed continuity rather than a stored key, there is no database to breach, no key to harvest, and no template to forge. The architecture is post-quantum by construction rather than by retrofit: there is no key for a quantum computer to break, because no persistent key material exists. A separate refinement entangles agent mutation lineage with the continuity chain, binding identity to an irreproducible history rather than a transferable secret.

Alone, and in composition

On its own, Keyless Identity is a passwordless, biometric-free authentication primitive for any setting where a stored credential is a liability — device pseudonymity and secure messaging, IoT and silicon-level identity, financial and healthcare continuity, supply-chain and access control, and identity for populations that cannot rely on persistent enrollment. It replaces the issue-store-present credential lifecycle with derivation from continuity, removing the breach surface entirely.

In composition, it supplies the identity layer for the wider Adaptive Query platform. The same dynamic hash chains, trust-slope reconstruction, and unpredictability-seeded continuity that authenticate a party also anchor agent identity across the substrate, so continuity validation becomes a shared primitive that other inventive steps build on rather than a bolt-on credential check.