Pith Number

pith:EPPHF5IT

pith:1995:EPPHF5ITN65TDTDMBPUJ5SSJXL

not attested not anchored not stored refs pending

On the masses of neutron stars

Caltech), E.J. Zuiderwijk (Univ. of Groningen, J. van Paradijs (Univ. of Amsterdam, M.H. van Kerkwijk (Univ. of Amsterdam, RGO), Univ. of Alabama in Huntsville)

arxiv:astro-ph/9505071 v1 · 1995-05-16 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EPPHF5ITN65TDTDMBPUJ5SSJXL}

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	2026-05-18T04:21:40.995905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23de72f5136fbb31cc6c0be89eca49bae3bb7eff35c91c0849775ae008f89b44

Aliases

arxiv: astro-ph/9505071 · arxiv_version: astro-ph/9505071v1 · doi: 10.48550/arxiv.astro-ph/9505071 · pith_short_12: EPPHF5ITN65T · pith_short_16: EPPHF5ITN65TDTDM · pith_short_8: EPPHF5IT

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/EPPHF5ITN65TDTDMBPUJ5SSJXL \
  | 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: 23de72f5136fbb31cc6c0be89eca49bae3bb7eff35c91c0849775ae008f89b44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33e2765d9f1c1d79781248c868f0be60ed2f3e86df2bd7a3135f6c6f651cf42a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-05-16T20:59:53Z",
    "title_canon_sha256": "d9da16cfbf89079ec0621f985b036534a1c768727ba705b187a872a61ed21bb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9505071",
    "kind": "arxiv",
    "version": 1
  }
}