Pith Number

pith:GCCLIFHP

pith:2026:GCCLIFHPW62GFT7F6FA3CL5CGS

not attested not anchored not stored refs pending

Pretraining Data Can Be Poisoned through Computational Propaganda

David Kohlbrenner, Hannaneh Hajishirzi, Kyle Lo, Noah A. Smith, Victoria Graf

arxiv:2607.15267 v1 · 2026-07-16 · cs.AI · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GCCLIFHPW62GFT7F6FA3CL5CGS}

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	2026-07-17T01:22:17.625268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3084b414efb7b462cfe5f141b12fa2349663f143ead99de82fecf366bbcfff0c

Aliases

arxiv: 2607.15267 · arxiv_version: 2607.15267v1 · doi: 10.48550/arxiv.2607.15267 · pith_short_12: GCCLIFHPW62G · pith_short_16: GCCLIFHPW62GFT7F · pith_short_8: GCCLIFHP

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/GCCLIFHPW62GFT7F6FA3CL5CGS \
  | 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: 3084b414efb7b462cfe5f141b12fa2349663f143ead99de82fecf366bbcfff0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22380a9db5da430d6b5efe3bc82760426592d715ad230429e934e13037741a5c",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-07-16T17:56:05Z",
    "title_canon_sha256": "7db619be2703970f28221d501aefbd6b2dde00f510da008aad9f9b2fad449646"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.15267",
    "kind": "arxiv",
    "version": 1
  }
}