Pith Number

pith:NFKGUGFT

pith:2003:NFKGUGFT6M3ZGLXDSQVT2MVDFC

not attested not anchored not stored refs pending

The phase of the radio and X-ray pulses of PSR B1937+21

B.W. Stappers, E. Massaro, G. Cusumano, L. Kuiper, L. Nicastro, M. Kramer, O. Lohmer, T. Mineo, W. Hermsen

arxiv:astro-ph/0309580 v1 · 2003-09-22 · 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{NFKGUGFT6M3ZGLXDSQVT2MVDFC}

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.

Cited by

1 paper in Pith

Searching for links between energetic millisecond pulsars and repeating fast radio bursts

Receipt and verification

First computed	2026-07-04T15:20:12.300337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69546a18b3f337932ee3942b3d32a328bf94373059ac4fc3a8f7c81e702235e9

Aliases

arxiv: astro-ph/0309580 · arxiv_version: astro-ph/0309580v1 · doi: 10.48550/arxiv.astro-ph/0309580 · pith_short_12: NFKGUGFT6M3Z · pith_short_16: NFKGUGFT6M3ZGLXD · pith_short_8: NFKGUGFT

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/NFKGUGFT6M3ZGLXDSQVT2MVDFC \
  | 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: 69546a18b3f337932ee3942b3d32a328bf94373059ac4fc3a8f7c81e702235e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd9edc44fea11463ab16de06c728f4f852a49e48e44affce680d2722cbbf6a3b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-09-22T14:15:44Z",
    "title_canon_sha256": "1bcd687770f6d7c98a19650f3e6c9d16258e7f5d00752f35ea73930f4f2c9cad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0309580",
    "kind": "arxiv",
    "version": 1
  }
}