Pith Number

pith:YKNH3WH4

pith:2012:YKNH3WH4VROQ6VQZ7NP2XFKRMV

not attested not anchored not stored refs pending

Cosmological constraints on polytropic gas model

K. Karami, S. Asadzadeh, Z. Safari

arxiv:1209.6374 v1 · 2012-09-26 · 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{YKNH3WH4VROQ6VQZ7NP2XFKRMV}

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	2026-05-18T00:39:16.290147Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c29a7dd8fcac5d0f5619fb5fab95516570275b6b5e82f1f4026e44d8cb2ccb6a

Aliases

arxiv: 1209.6374 · arxiv_version: 1209.6374v1 · doi: 10.48550/arxiv.1209.6374 · pith_short_12: YKNH3WH4VROQ · pith_short_16: YKNH3WH4VROQ6VQZ · pith_short_8: YKNH3WH4

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/YKNH3WH4VROQ6VQZ7NP2XFKRMV \
  | 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: c29a7dd8fcac5d0f5619fb5fab95516570275b6b5e82f1f4026e44d8cb2ccb6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dac6cec753815cfeacf5f1c30077f158c9fb119470aa6ce170c1b08c96034fc3",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-26T09:39:56Z",
    "title_canon_sha256": "67f8ba0338d7fd3d70fdf98ff7a94ae205e38014666ad353f68ce4129e7609c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.6374",
    "kind": "arxiv",
    "version": 1
  }
}