Pith Number

pith:ACB6IZPA

pith:2026:ACB6IZPAQU6P7URY5VC7M7JUZB

not attested not anchored not stored refs pending

When AI Reviews Its Own Code: Recursive Self-Training Collapse in Code LLMs

Liang Zhao, Xinyuan Song, Zekun Cai

arxiv:2606.28438 v1 · 2026-06-26 · cs.SE · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ACB6IZPAQU6P7URY5VC7M7JUZB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-30T00:15:14.053871Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0083e465e0853cffd238ed45f67d34c85fa7db335b9bc25cfa6859741cefe009

Aliases

arxiv: 2606.28438 · arxiv_version: 2606.28438v1 · doi: 10.48550/arxiv.2606.28438 · pith_short_12: ACB6IZPAQU6P · pith_short_16: ACB6IZPAQU6P7URY · pith_short_8: ACB6IZPA

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ACB6IZPAQU6P7URY5VC7M7JUZB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 0083e465e0853cffd238ed45f67d34c85fa7db335b9bc25cfa6859741cefe009

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "defcc7bf7b367c3318ec86df133b49e0d08ac35ca133ed71ac5109cf3f14dcff",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-06-26T07:35:43Z",
    "title_canon_sha256": "7e9d0cf3bd1dc16f4ca202b2b675cf6b9fa6c5b3c475ea25c0870485cc5a081e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.28438",
    "kind": "arxiv",
    "version": 1
  }
}