Pith Number

pith:7H2HDL6E

pith:2015:7H2HDL6EXD4OXTROCVDVPM5K4H

not attested not anchored not stored refs pending

The cooling of the Cassiopeia A neutron star as a probe of a triplet neutron pairing in the core

Lev B. Leinson

arxiv:1509.02827 v3 · 2015-09-07 · astro-ph.HE · astro-ph.SR · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7H2HDL6EXD4OXTROCVDVPM5K4H}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:29:29.227859Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9f471afc4b8f8ebce2e154757b3aae1ef444226c7b8db8541cb6eddbf2596b0

Aliases

arxiv: 1509.02827 · arxiv_version: 1509.02827v3 · doi: 10.48550/arxiv.1509.02827 · pith_short_12: 7H2HDL6EXD4O · pith_short_16: 7H2HDL6EXD4OXTRO · pith_short_8: 7H2HDL6E

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/7H2HDL6EXD4OXTROCVDVPM5K4H \
  | 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: f9f471afc4b8f8ebce2e154757b3aae1ef444226c7b8db8541cb6eddbf2596b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72d0c03e15ed8eb86449bad9fa212a5f87e10eca3aa7aedb99810f5e51477191",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "nucl-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-09-07T20:36:25Z",
    "title_canon_sha256": "c5e5b1e7aede90c32508a45e206d8a168bd316bba101d399fae7d3871a349aaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02827",
    "kind": "arxiv",
    "version": 3
  }
}