Cryptographic Attestation for AI Agent Governance under the EU AI Act: A Survey of Approaches and Standards

Version 2.5 update. v2.5 extends v2.4 in two specific ways. First, §4 closes with a new short subsection (§4.9 Documented co-emergence) that describes OVERT 1.0 and EATF's Agent Evidence Package (AEP) v1 as a documented case of independent, royalty-free category-emergence rather than vendor-driven category invention; the two artifacts are stewarded by separable organisations in different jurisdictions (Glacis Technologies in the US; Tyche Institute MTÜ in Estonia), released under royalty-free terms, with AEP v1 carrying an OVERT 1.0 receipt in every evidence package. A new Table 10 summarises the timeline. Second, §6 gains a new subsection (§6.3 Standards-body engagement and observer posture) that names the…