Pith Number

pith:PDXPLPDW

pith:2015:PDXPLPDWYIY44WISIWCNBQ7RKO

not attested not anchored not stored refs pending

Direct Urca processes involving singlet proton superfluidity in neutron star cooling

Cheng Zhi Liu, Cun Bo Fan, Lin Xiao, Tmurbagan Bao, Xiao Jun Zhang, Xiu Lin Huang, Yan Xu

arxiv:1509.05150 v4 · 2015-09-17 · 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{PDXPLPDWYIY44WISIWCNBQ7RKO}

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	2026-05-18T01:15:58.221814Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78eef5bc76c231ce59124584d0c3f1539a09ea6336d4dc8d511181dc80cdef2d

Aliases

arxiv: 1509.05150 · arxiv_version: 1509.05150v4 · doi: 10.48550/arxiv.1509.05150 · pith_short_12: PDXPLPDWYIY4 · pith_short_16: PDXPLPDWYIY44WIS · pith_short_8: PDXPLPDW

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/PDXPLPDWYIY44WISIWCNBQ7RKO \
  | 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: 78eef5bc76c231ce59124584d0c3f1539a09ea6336d4dc8d511181dc80cdef2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40ebe8f4b6acf6a98bc151cc856dd4bb6fb7710f77b2ac03c8a0fccd4f89fd95",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nucl-th",
    "submitted_at": "2015-09-17T07:38:36Z",
    "title_canon_sha256": "1581b4342604aadede068ea923026b8a6a8f7f15f7869752b354deabe0b33035"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.05150",
    "kind": "arxiv",
    "version": 4
  }
}