Pith Number

pith:PGH2FDAA

pith:2013:PGH2FDAAKWTL7HTNBOK6TMCAO2

not attested not anchored not stored refs pending

Dark matter equation of state from rotational curves of galaxies

Argelia Bernal, Dario Nunez, Juan Barranco

arxiv:1301.6785 v2 · 2013-01-28 · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PGH2FDAAKWTL7HTNBOK6TMCAO2}

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	2026-05-18T02:27:19.116827Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

798fa28c0055a6bf9e6d0b95e9b040768749e9b646c0f527e16a04c3dbdba9c2

Aliases

arxiv: 1301.6785 · arxiv_version: 1301.6785v2 · doi: 10.48550/arxiv.1301.6785 · pith_short_12: PGH2FDAAKWTL · pith_short_16: PGH2FDAAKWTL7HTN · pith_short_8: PGH2FDAA

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/PGH2FDAAKWTL7HTNBOK6TMCAO2 \
  | 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: 798fa28c0055a6bf9e6d0b95e9b040768749e9b646c0f527e16a04c3dbdba9c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a0dfb06a40e00010e179641da8a58fb840730da7dfe406197286ebca50601b1",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-01-28T21:40:48Z",
    "title_canon_sha256": "006616ccfaca84cd25eec16211062aae3248d9b3d04cf638e9dd976900f5fe6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.6785",
    "kind": "arxiv",
    "version": 2
  }
}