Pith Number

pith:LAUJYPFT

pith:2019:LAUJYPFTWTDKT6HT3QTX65G3FI

not attested not anchored not stored refs pending

What can PSR J1640-4631 tell us about the internal physics of this neutron star?

Quan Cheng, Shuang-Nan Zhang, Xiao-Ping Zheng, Xi-Long Fan

arxiv:1904.06570 v1 · 2019-04-13 · 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{LAUJYPFTWTDKT6HT3QTX65G3FI}

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	2026-05-17T23:46:46.936424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58289c3cb3b4c6a9f8f3dc277f74db2a38e597f5daf72c449e3c069e5243678e

Aliases

arxiv: 1904.06570 · arxiv_version: 1904.06570v1 · doi: 10.48550/arxiv.1904.06570 · pith_short_12: LAUJYPFTWTDK · pith_short_16: LAUJYPFTWTDKT6HT · pith_short_8: LAUJYPFT

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/LAUJYPFTWTDKT6HT3QTX65G3FI \
  | 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: 58289c3cb3b4c6a9f8f3dc277f74db2a38e597f5daf72c449e3c069e5243678e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be097ea28579d7601bd1a76abdb25bae5c065574e0006607faa3bf7ebb6d8a64",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-04-13T17:09:16Z",
    "title_canon_sha256": "f12744e6972927b907f3b8f2d2b3b9f9fb1040243596b0177d00bad0257266c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.06570",
    "kind": "arxiv",
    "version": 1
  }
}