Pith Number

pith:2MASQCPR

pith:2004:2MASQCPRLSKLBSCLFQX4WAFSE6

not attested not anchored not stored refs pending

Distinguishing Bare Quark Stars from Neutron Stars

Charles Gale (McGill U.), Dany Page (UNAM), Madappa Prakash (SUNY Stony Brook), Prashanth Jaikumar

arxiv:astro-ph/0407091 v1 · 2004-07-05 · astro-ph · hep-ph · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2MASQCPRLSKLBSCLFQX4WAFSE6}

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	2026-07-04T16:44:15.148159Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3012809f15c94b0c84b2c2fcb00b2279df34e14af0da0d87bb5b164286de96c

Aliases

arxiv: astro-ph/0407091 · arxiv_version: astro-ph/0407091v1 · doi: 10.48550/arxiv.astro-ph/0407091 · pith_short_12: 2MASQCPRLSKL · pith_short_16: 2MASQCPRLSKLBSCL · pith_short_8: 2MASQCPR

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/2MASQCPRLSKLBSCLFQX4WAFSE6 \
  | 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: d3012809f15c94b0c84b2c2fcb00b2279df34e14af0da0d87bb5b164286de96c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a1ec81fb71b2d427599b695bb9cf4e4409c22fe595e3e6d1b87cac67de3cee7",
    "cross_cats_sorted": [
      "hep-ph",
      "nucl-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-07-05T19:25:35Z",
    "title_canon_sha256": "9ef8af5d747759ec87ae95959ae42280e73a90e7a104d21789180cd263cf61d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0407091",
    "kind": "arxiv",
    "version": 1
  }
}