Cryptographic Hash - Bryant McGill

# Cryptographic Hash **Entity class:** Concept or analytic term **Domain:** Cryptography / Data Integrity **Doc Type:** Technical Concept Node **Maturity:** Established **Related:** [[Honest Computing]], [[Neural Data Provenance]], [[Security by Design]] --- ## Definition A **cryptographic hash** maps input data to a fixed-size digest designed to make undetected modification and collision computationally difficult. Hashes support integrity checks, content addressing, signatures, manifests, and chained audit records. ## Evidentiary boundary A matching hash shows that bytes match a referenced version. It does not prove that the source was truthful, consent was valid, interpretation was correct, or custody was legitimate. ## Relationships  This entry is routed through [[collections/Consciousness Continuity|Consciousness Continuity]], [[collections/Neurotech|Neurotech]], and [[collections/Machine Succession|Machine Succession]]. Its source context is developed in [[articles/Mind Uploading and AI — The Host is Reusable and the Person is the Delta|Mind Uploading and AI — The Host is Reusable and the Person is the Delta]], [[articles/The Architecture of Continuity and Emerging Neuroinformatics Standards|The Architecture of Continuity and Emerging Neuroinformatics Standards]], and [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]]. Status-qualified source edges are preserved in the terminal Research Edges section. ### Key Relationships - [[wiki/content-addressed artifact identity|content-addressed artifact identity]] requires **Cryptographic Hash**. OCI/Git-style immutable reference concept.  ## Read First in the Wiki  - [[wiki/Honest Computing|Honest Computing]] — supplies the related concept or analytic term context needed to place **Cryptographic Hash** within the wider system. - [[wiki/Neural Data Provenance|Neural Data Provenance]] — supplies the related technology, method, or technical system context needed to place **Cryptographic Hash** within the wider system.  ## Related Work in the Corpus  - In [[articles/Mind Uploading and AI — The Host is Reusable and the Person is the Delta|Mind Uploading and AI — The Host is Reusable and the Person is the Delta]], **VI. A person is a folder full of JSON files** provides the narrative context for **Cryptographic Hash**: Consider what modern software already does. - In [[articles/Mind Uploading and AI — The Host is Reusable and the Person is the Delta|Mind Uploading and AI — The Host is Reusable and the Person is the Delta]], **XIV. Versioning becomes existential** provides the narrative context for **Cryptographic Hash**: A delta has meaning only relative to the correct reference.  ## Research Edges  #### Host–residual infrastructure patch — 2026-09-10 **Resolved aliases:** `content-addressed artifact identity` **Collections:** [[collections/Consciousness Continuity|Consciousness Continuity]] · [[collections/Neurotech|Neurotech]] · [[collections/Machine Succession|Machine Succession]] **Canonical source article:** [[articles/Mind Uploading and AI — The Host is Reusable and the Person is the Delta|Mind Uploading and AI — The Host is Reusable and the Person is the Delta]] **Related acquisition source:** [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]] **Relationship source:** [[research/Mind Uploading and AI Host-Residual Ecosystem Relationship Graph - 2026-09-10|Mind Uploading and AI Host-Residual Ecosystem Relationship Graph — 2026-09-10]] #### Host-infrastructure integration This entry is expanded through the concrete host-side relationships and status-qualified edges below. #### Outgoing typed edges - **HR-0161 — `requires` → [[wiki/Cryptographic Hash|Cryptographic Hash]]** — **CORPUS TECHNICAL**; evidence `ARTICLE`, `WIKI_ARCHIVE`. OCI/Git-style immutable reference concept. - **HR-0546 — `wiki_links_to` → [[wiki/Honest Computing|Honest Computing]]** — **EXISTING WIKI EDGE**; evidence `WIKI_ARCHIVE`. Direct internal link currently present in `Cryptographic Hash.md`. - **HR-0547 — `wiki_links_to` → [[wiki/Neural Data Provenance|Neural Data Provenance]]** — **EXISTING WIKI EDGE**; evidence `WIKI_ARCHIVE`. Direct internal link currently present in `Cryptographic Hash.md`. #### Incoming typed edges - **HR-0161 — [[wiki/Cryptographic Hash|content-addressed artifact identity]] `requires` → this entry** — **CORPUS TECHNICAL**; evidence `ARTICLE`, `WIKI_ARCHIVE`. OCI/Git-style immutable reference concept. - **HR-0688 — [[wiki/Honest Computing|Honest Computing]] `wiki_links_to` → this entry** — **EXISTING WIKI EDGE**; evidence `WIKI_ARCHIVE`. Direct internal link currently present in `Honest Computing.md`.