Pith Number

pith:Y3DUKL4Q

pith:2013:Y3DUKL4QBAAM6JOMXOZWEGJ7SW

not attested not anchored not stored refs pending

A variable absorption feature in the X-ray spectrum of a magnetar

Andrea Tiengo, Diego Gotz, Fabio Gastaldello, GianLuca Israel, Giovanni F. Bignami, Luciano Nobili, Luigi Stella, Nanda Rea, Paolo Esposito, Roberto Turolla, Sandro Mereghetti, Silvia Zane

arxiv:1308.4987 v1 · 2013-08-22 · 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{Y3DUKL4QBAAM6JOMXOZWEGJ7SW}

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	2026-05-18T03:15:17.761067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6c7452f900800cf25ccbbb362193f958a2a816001d0084c1cb366bd3cfa5243

Aliases

arxiv: 1308.4987 · arxiv_version: 1308.4987v1 · doi: 10.48550/arxiv.1308.4987 · pith_short_12: Y3DUKL4QBAAM · pith_short_16: Y3DUKL4QBAAM6JOM · pith_short_8: Y3DUKL4Q

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/Y3DUKL4QBAAM6JOMXOZWEGJ7SW \
  | 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: c6c7452f900800cf25ccbbb362193f958a2a816001d0084c1cb366bd3cfa5243

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9778c1a84f36116ce198f026bba69fa2780b6739193a27549f0a10b3fddce811",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-08-22T20:16:42Z",
    "title_canon_sha256": "5190d33dcb2ba718891eac7d5546644ee80344e2dc1ed68731f42540d0885a67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4987",
    "kind": "arxiv",
    "version": 1
  }
}