Pith Number

pith:3MJGKFXA

pith:2019:3MJGKFXAFP6P4OECWYQCLEO4B4

not attested not anchored not stored refs pending

Warm dark matter model with a few keV mass is bad for the too-big-to-fail problem

Xi Kang

arxiv:1911.05257 v1 · 2019-11-13 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3MJGKFXAFP6P4OECWYQCLEO4B4}

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	2026-07-05T00:32:05.113803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db126516e02bfcfe3882b6202591dc0f2f598deee067eb1fbc6e41429ea63a4b

Aliases

arxiv: 1911.05257 · arxiv_version: 1911.05257v1 · doi: 10.48550/arxiv.1911.05257 · pith_short_12: 3MJGKFXAFP6P · pith_short_16: 3MJGKFXAFP6P4OEC · pith_short_8: 3MJGKFXA

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/3MJGKFXAFP6P4OECWYQCLEO4B4 \
  | 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: db126516e02bfcfe3882b6202591dc0f2f598deee067eb1fbc6e41429ea63a4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54875c316537fc65ac67a2f2585159df4f61f0f7eb99e2dc09eee29042c241a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-11-13T02:30:52Z",
    "title_canon_sha256": "2d060d77293a7b217b953b89f46400af5ba6700cf46c0d9e3e550ba3976dd456"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.05257",
    "kind": "arxiv",
    "version": 1
  }
}