Pith Number

pith:DA3JIMOV

pith:2013:DA3JIMOV6CV6QBDGNPVDWLMBTM

not attested not anchored not stored refs pending

The cooling of the Cassiopeia A neutron star as a probe of the nuclear symmetry energy and nuclear pasta

Bao-An Li, Joshua Hooker, Kyleah Murphy, William G. Newton

arxiv:1308.2137 v2 · 2013-08-09 · astro-ph.SR · 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{DA3JIMOV6CV6QBDGNPVDWLMBTM}

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	2026-05-18T01:48:21.690509Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18369431d5f0abe804666bea3b2d819b25e69aa3efed7755e32007598082e64b

Aliases

arxiv: 1308.2137 · arxiv_version: 1308.2137v2 · doi: 10.48550/arxiv.1308.2137 · pith_short_12: DA3JIMOV6CV6 · pith_short_16: DA3JIMOV6CV6QBDG · pith_short_8: DA3JIMOV

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/DA3JIMOV6CV6QBDGNPVDWLMBTM \
  | 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: 18369431d5f0abe804666bea3b2d819b25e69aa3efed7755e32007598082e64b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c76698a87df06a0f28f8fb80bdb8a373d8a548400071afa491c7cfc0f4a8385d",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "nucl-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-08-09T14:33:38Z",
    "title_canon_sha256": "3fd4d8e91ce2fb57f0f80abe855a03416908113585d52bf9e9daea39bec3deba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2137",
    "kind": "arxiv",
    "version": 2
  }
}