Pith Number

pith:QQPMYOBJ

pith:2019:QQPMYOBJT4C7RW72KTVBCS6AUD

not attested not anchored not stored refs pending

Common Origin of Warm Dark Matter and Dark Radiation

Keisuke Harigaya, Manuel A. Buen-Abad, Raymond T. Co

arxiv:1911.13267 v2 · 2019-11-29 · astro-ph.CO · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QQPMYOBJT4C7RW72KTVBCS6AUD}

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	2026-07-05T02:04:39.497077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

841ecc38299f05f8dbfa54ea114bc0a0ed341b7e05b1d96d4918089deda55686

Aliases

arxiv: 1911.13267 · arxiv_version: 1911.13267v2 · doi: 10.48550/arxiv.1911.13267 · pith_short_12: QQPMYOBJT4C7 · pith_short_16: QQPMYOBJT4C7RW72 · pith_short_8: QQPMYOBJ

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/QQPMYOBJT4C7RW72KTVBCS6AUD \
  | 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: 841ecc38299f05f8dbfa54ea114bc0a0ed341b7e05b1d96d4918089deda55686

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13121dd44338d005b636c6c33ea62d946a6e9bfeebe2361344c4af3e82b222ca",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-11-29T18:06:02Z",
    "title_canon_sha256": "4fd8764059e9981132aa4be3b2db9985afd0d043aedabf89ad644331349a1ce4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.13267",
    "kind": "arxiv",
    "version": 2
  }
}