Pith Number

pith:7QWRAVVO

pith:2013:7QWRAVVOJVTH465JZKVQMOZNWW

not attested not anchored not stored refs pending

The neutron star in Cassiopeia A: equation of state, superfluidity, and Joule heating

A. Bonanno, G. F. Burgio, M. Baldo, V. Urpin

arxiv:1311.2153 v1 · 2013-11-09 · 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{7QWRAVVOJVTH465JZKVQMOZNWW}

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	2026-05-18T01:46:32.679592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc2d1056ae4d667e7ba9caab063b2db5ac3fa7b4a8b76e1c93d663a4b7ae59b9

Aliases

arxiv: 1311.2153 · arxiv_version: 1311.2153v1 · doi: 10.48550/arxiv.1311.2153 · pith_short_12: 7QWRAVVOJVTH · pith_short_16: 7QWRAVVOJVTH465J · pith_short_8: 7QWRAVVO

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/7QWRAVVOJVTH465JZKVQMOZNWW \
  | 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: fc2d1056ae4d667e7ba9caab063b2db5ac3fa7b4a8b76e1c93d663a4b7ae59b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eed783fd397b30b969af5f45299e81ba3f4a3d39778a1015c8e362aa149d6520",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-11-09T09:16:47Z",
    "title_canon_sha256": "8d5df8ed86edc7a18d846a9dd8165f416523a3548828c3660e0f950c481947d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.2153",
    "kind": "arxiv",
    "version": 1
  }
}