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PAI-Kernel v2.2.1

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PAI-Kernel v2.2.1 — Release Notes

Release date: 2026-04-23
Status: Early preview · invitation-only distribution
Framework version: PAI-CD v2.2.1
SDK version: v1.3.0 (crates.io parallel publication)
Repository: github.com/PAI-Kernel/pai-kernel
Paper: SSRN DOI 10.2139/ssrn.6512218

What this release is

First public release of PAI-Kernel. Previous history: internal development, SSRN paper publication (v2.2.1 — April 2026), public repository paused pending remediation.

The pause has been lifted. v2.2.1 is the authorized first release — early preview, not production-ready, not general-availability.

Integration level · honest framing

PAI-Kernel v2.2.1 SDK provides the governance substrate — invariants, witness chain, consent gates, drift monitoring, export primitives. This release runs side-by-side with Ollama (or any LLM runtime) for local demonstration purposes. The AI-mediation wiring — routing model responses through governance gates, Conservative Mode blocking AI output mid-stream, witness entries auto-populated from chat turns — is scheduled for a future release.

See INSTALL.md § 8 "What you're seeing (Level 1 Demo Mode)" and KNOWN_LIMITATIONS.md for the full scope statement.

Scope

Framework corpus (3 canonical documents)

Published to repository root:

  • Constitutional Core (PAI_Constitutional_Document.md) — 205 lines; non-derogable invariants, document hierarchy, interpretive rules
  • Bill of Authorial Rights (PAI_Bill_of_Authorial_Rights.md) — 355 lines; 14 enforceable rights with non-derogation protection
  • Glossary (Glossary.md) — 349 lines; binding terminology authority

Browsable HTML rendering: corpus.paikernel.org (same content, different surface)

SDK v1.3.0 (Rust workspace)

  • 28 crates implementing framework invariants
  • 2 runtime binaries: pai_governance_daemon (axum HTTP daemon) + CLI subcommands
  • 262 tests passing; 0 regressions
  • Phase 1 scope: live daemon + witness chain + drift monitoring + consent gate + snapshot/export
  • Publication to crates.io in parallel

Paper

  • Title (as published): "PAI-CD: A Constitutional Framework for Authorial Sovereignty in Deployed AI Systems"
  • Author: Mikhail Anatolievich Sergeev (Independent Researcher; PAI-Kernel Initiative)
  • Venue: SSRN · DOI 10.2139/ssrn.6512218
  • PDF: papers/PAI-CD_Authorial_Sovereignty_Deployed_AI_v2.2.1.pdf

What changed in v2.2.1

From v2.2 Freeze Edition (2026-03-19)

v2.2.1 is v2.2 + editorial patches + traceability metadata. No new normative content.

R2 terminology patches

Applied to the 3 corpus documents:

  • Constitutional Core · Principle 6 — added inline clarifying note: "'Standard' refers to the classification criterion, not standardization-body-level specification. PAI-CD is a normative framework, not a formally ratified standard."
  • Bill of Rights · Right 5 — "standardized format" → "portable format" (semantic consistency with right title "RIGHT TO PORTABILITY")

Other R2 rulings (Ruling 3 "protocol between instances", Ruling 4 "normative standard") do not apply to v2.2 source text — those terms were introduced in later Amendment cycles (v2.3+ / v3.x).

Style normalization

Applied to all published Markdown:

  • Human-readable H1 titles replace filename-style H1 (# PAI_Constitutional_Document.md → # Constitutional Core)
  • Markdownlint configuration via .markdownlint.json (project style rules)
  • Frontmatter added: title / slug / category / excerpt / metadata / pai_cd.source.* traceability block
  • Footer traceability line added

Pre-release defect remediation

Prior to this release a public-repo defect inventory was maintained (ten items identified). Resolution before v2.2.1 push:

  • 8 items remediated — integrated into this release (terminology discipline fixes, copyright granularity, versioning notes, paper update, citation metadata)
  • 2 items closed pre-release (stale branch deleted; archival metadata title correction landed in prior cycle)
  • 0 items carried forward as known limitations

What did NOT change

The v2.2 Freeze Edition surface at corpus.paikernel.org (ReadMe-hosted corpus-docs sync repo) uses pure v2.2 verbatim content without R2 patches. That surface is a pure archival snapshot.

The v2.2.1 GitHub release surface does apply R2 patches. This matches the bifurcation model (public snapshot layer vs public release layer are distinct).

Which to cite: academic citation targets SSRN paper DOI (cites v2.2.1 reconstruction). Repository citations use github.com/PAI-Kernel/pai-kernel@v2.2.1.

Known limitations

See KNOWN_LIMITATIONS.md for full text. Key items:

  • v2.2 is a citationally-stable freeze; future corpus freezes may introduce additional normative content (not auto-reflected here)
  • SDK v1.3.0 exceeds v2.2 corpus scope — the runtime implements additional invariants ahead of their publication in a future corpus freeze; adopters using SDK bind to this superset
  • Several corpus-required items (TCB attestation, supply-chain provenance, multi-principal governance, author vulnerability protection V4 path) are not runtime-enforced in SDK v1.3.0 yet
  • Multi-instance coordination (multiple PAI Authors cooperating) is proposal-stage — NOT in v2.2.1
  • Regulatory zone governance + provider-disposition disclosure are scheduled for a later release — NOT in v2.2.1
  • Formal verification methods produce specification-level verdicts, not runtime-SDK conformance

Installation

SDK (Rust)

cargo add pai-kernel

Or add to Cargo.toml:

[dependencies]
pai-kernel = "1.3"

Individual crates available (see workspace members). Running the daemon:

cargo install --path runtime/pai_kernel
pai_governance_daemon --config pai-kernel.toml

Default bind: 127.0.0.1:9100. HTTP surface per pai_api crate.

Framework corpus

  • Clone repo: git clone https://github.com/PAI-Kernel/pai-kernel.git
  • Checkout tag: git checkout v2.2.1
  • Read corpus docs: repository root

Or browse online: corpus.paikernel.org

Distribution scope

Invitation-only early adopter distribution.

  • Public GitHub release (discoverable but not announced)
  • crates.io publication (Rust developers can find via search; not promoted)
  • Direct personal invitations sent to initial adopter shortlist
  • No public announcement on LinkedIn, X, HackerNews, Product Hunt until future DL authorizes it

Transition to general availability gated on:

  • Next major corpus release publication, OR
  • Early adopter feedback validating stability

Either transition requires new DL.

Feedback

Welcomed via:

  • GitHub Issues at github.com/PAI-Kernel/pai-kernel/issues (public)
  • Direct contact: contact@paikernel.org
  • Security-sensitive: GitHub security advisory

Valuable contributions:

  • Objections, counterexamples, architectural critique
  • Formal verification extensions
  • Experience reports from attempted deployments

Rollback posture

  • Pre-push rollback — release authorization can be rescinded before first push (no external impact)
  • Post-push rollback — repository can be set back to private; v2.2.1 tag deletion possible but creates "withdrawn release" signal (avoided unless critical)
  • Critical-failure archive path — if post-release problems emerge, archive public repo and restart on new repo (high cost; reserved for critical defect)

License

  • Corpus (Markdown documents): CC BY 4.0
  • SDK code (Rust): MIT OR Apache-2.0 (dual license per Rust convention)
  • Paper: SSRN standard posting terms

See LICENSE for full text.

Acknowledgments

v2.2.1 is the product of sustained solo development effort across 2026 by the maintainer (Mikhail Sergeev as Independent Researcher / PAI-Kernel Initiative). The framework's development followed an internal governance discipline that systematically considered multiple perspectives — product, technical, standards, research, audit, and ecosystem — through documented decision-making processes.

Specific acknowledgments are deferred to the general-availability release; early adopter contributions (once feedback arrives) will be documented in a future CONTRIBUTORS file.

Next

  • v2.2.2 (patch candidate): reserved for security or citation-critical fixes only
  • Next major corpus release: under active development; timeline subject to dedicated publication cycle
  • Public announcement: separate future DL; gated on readiness signals above

PAI-Kernel v2.2.1 · Release Notes · 2026-04-23
Tag: v2.2.1 · Commit: [to be filled at tag creation]

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PAI-CD v2.2 — Freeze Edition (Initial Public Release)

21 Mar 16:29
@MikhailSergeev369 MikhailSergeev369
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v2.2
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PAI-CD v2.2 — Freeze Edition

Initial public release of the PAI Constitutional Document (PAI-CD).

This release establishes the normative core of PAI-CD v2.2 as a stable baseline for:

  • academic publication
  • external review

Contents

  • Foundational constitutional documents (Public Edition):

    • Constitutional Document
    • Bill of Authorial Rights
    • Glossary

  • Initial research paper:

    • PAI-CD: A Constitutional Framework for Authorial Sovereignty in Deployed AI Systems

Normative Status

The normative authority of PAI-CD v2.2 is defined exclusively by the constitutional documents included in this release package.

At this stage, the Public Edition is published as a flat structure in the repository root.

Future versions will introduce a structured corpus/ directory without altering normative content.

All other materials — including README, papers, and supporting documentation — are non-binding.

Scope of Public Edition

This release includes 3 of 10 documents comprising the PAI-CD v2.2 framework.

The remaining documents (implementation mapping, threat modeling, compliance, and governance layers) will be published in subsequent stages.

Stability

Version 2.2 is designated as a Freeze Edition:

  • core invariants are fixed
  • interpretation rules are stable
  • changes require formal Amendment

License

CC BY 4.0 (see LICENSE)

PAI Foundation (in formation)

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