Pith Number

pith:KHR2FCOF

pith:2012:KHR2FCOFBTNFWFGVSTKHMQ3VEO

not attested not anchored not stored refs pending

The missing compact star of SN1987A: a solid quark star?

G. J. Qiao, J. D. Liang, J. L. Han, R. X. Xu, X. W. Liu

arxiv:1201.3101 v2 · 2012-01-15 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KHR2FCOFBTNFWFGVSTKHMQ3VEO}

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	2026-05-18T01:58:49.129581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51e3a289c50cda5b14d594d476437523a871a906a569c0e998b59f90bf5eabcc

Aliases

arxiv: 1201.3101 · arxiv_version: 1201.3101v2 · doi: 10.48550/arxiv.1201.3101 · pith_short_12: KHR2FCOFBTNF · pith_short_16: KHR2FCOFBTNFWFGV · pith_short_8: KHR2FCOF

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/KHR2FCOFBTNFWFGVSTKHMQ3VEO \
  | 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: 51e3a289c50cda5b14d594d476437523a871a906a569c0e998b59f90bf5eabcc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51f97c4165299f1e188ee05dd87017d9d4673b1f0d4007aeaa3c84a3088a0310",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-01-15T16:30:07Z",
    "title_canon_sha256": "9ee7627f9e3da2f64aee95b27a4c4f045284057dab4d4dbf15a2b0d14b6ac041"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3101",
    "kind": "arxiv",
    "version": 2
  }
}