Pith Number

pith:A25IFDRO

pith:2010:A25IFDROIE66NYKTG33QCAANCD

not attested not anchored not stored refs pending

Modeling the Surface X-ray Emission and Viewing Geometry of PSR J0821-4300 in Puppis A

(2) JILA/University of Colorado), E. V. Gotthelf (1), J. P. Halpern (1) ((1) Columbia University, R. Perna (2)

arxiv:1009.4473 v1 · 2010-09-22 · 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{A25IFDROIE66NYKTG33QCAANCD}

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	2026-05-18T02:05:18.377159Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06ba828e2e413de6e15336f701000d10e8479cfd817df0f1b4064e30915491fa

Aliases

arxiv: 1009.4473 · arxiv_version: 1009.4473v1 · doi: 10.48550/arxiv.1009.4473 · pith_short_12: A25IFDROIE66 · pith_short_16: A25IFDROIE66NYKT · pith_short_8: A25IFDRO

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/A25IFDROIE66NYKTG33QCAANCD \
  | 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: 06ba828e2e413de6e15336f701000d10e8479cfd817df0f1b4064e30915491fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32a4c1a4a3ec51eb5b47af7cb0723d6f500232a7184e9e3e16e5cfb01a28cddd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-09-22T20:35:59Z",
    "title_canon_sha256": "11bbba061c80277e7ae1ca89935791b8b40df9040876287d164b9286cc2ca8b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.4473",
    "kind": "arxiv",
    "version": 1
  }
}