Pith Number

pith:QKNC3QC3

pith:2021:QKNC3QC3LO2HFMOUFZ4W3SBQVX

not attested not anchored not stored refs pending

Confirming the existence of twin stars in a NICER way

Jan-Erik Christian, J\"urgen Schaffner-Bielich

arxiv:2109.04191 v1 · 2021-09-09 · astro-ph.HE · 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{QKNC3QC3LO2HFMOUFZ4W3SBQVX}

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.

Cited by

1 paper in Pith

Probing Neutron Star Interiors and the Properties of Cold Ultra-dense Matter with the SKAO

Receipt and verification

First computed	2026-07-05T04:53:17.794856Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

829a2dc05b5bb472b1d42e796dc830addb7c29231d09d1dcb174f44e6d97ab8a

Aliases

arxiv: 2109.04191 · arxiv_version: 2109.04191v1 · doi: 10.48550/arxiv.2109.04191 · pith_short_12: QKNC3QC3LO2H · pith_short_16: QKNC3QC3LO2HFMOU · pith_short_8: QKNC3QC3

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/QKNC3QC3LO2HFMOUFZ4W3SBQVX \
  | 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: 829a2dc05b5bb472b1d42e796dc830addb7c29231d09d1dcb174f44e6d97ab8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "681a0f289a6cc98afcc64890bef4431b06b3d0039de96d9e4fe02060c421cf10",
    "cross_cats_sorted": [
      "nucl-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-09-09T11:54:31Z",
    "title_canon_sha256": "a1864520d6059389939849daf8802ac0977c88451b0d8f7a065cdfca00e26d96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.04191",
    "kind": "arxiv",
    "version": 1
  }
}