Pith Number

pith:23D2PZDP

pith:2005:23D2PZDPHJ6FPNHJUHJAQBPUJB

not attested not anchored not stored refs pending

Three XMM-Newton observations of the Anomalous X-ray Pulsar 1E 1048.1-5937: long term variations in spectrum and pulsed fraction

A. Tiengo, G. L. Israel, L. Stella, N. Rea, R. Turolla, S. Mereghetti, S. Zane

arxiv:astro-ph/0503390 v1 · 2005-03-17 · 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{23D2PZDPHJ6FPNHJUHJAQBPUJB}

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	2026-07-04T16:51:01.454440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6c7a7e46f3a7c57b4e9a1d20805f44874f50257e850bf7eafeb63cc97c93018

Aliases

arxiv: astro-ph/0503390 · arxiv_version: astro-ph/0503390v1 · doi: 10.48550/arxiv.astro-ph/0503390 · pith_short_12: 23D2PZDPHJ6F · pith_short_16: 23D2PZDPHJ6FPNHJ · pith_short_8: 23D2PZDP

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/23D2PZDPHJ6FPNHJUHJAQBPUJB \
  | 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: d6c7a7e46f3a7c57b4e9a1d20805f44874f50257e850bf7eafeb63cc97c93018

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3547f4aef3900a195a4c26be91a0e2ecfd4a0eb7f727324389018493f1d20141",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-03-17T14:44:26Z",
    "title_canon_sha256": "63a072be1c38a43431e8a75f0c7d08c7b72db5e709ce62c24bed236eef5f775a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0503390",
    "kind": "arxiv",
    "version": 1
  }
}