Pith Number

pith:UB4DLNHX

pith:2025:UB4DLNHXP4YBM6Q4AVOTZDE2GP

not attested not anchored not stored refs pending

First detection of X-ray polarization from the long-period X-ray pulsar 4U 1954+319

Alexander Salganik, Andrea Santangelo, Honghui Liu, Juri Poutanen, Lingda Kong, Menglei Zhou, QingChang Zhao, Sergey S. Tsygankov, Sofia V. Forsblom

arxiv:2512.08195 v2 · 2025-12-09 · 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{UB4DLNHXP4YBM6Q4AVOTZDE2GP}

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	2026-05-26T01:03:19.521194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a07835b4f77f30167a1c055d3c8c9a33e4396b6d5a6b65c195aab69656f7b522

Aliases

arxiv: 2512.08195 · arxiv_version: 2512.08195v2 · doi: 10.48550/arxiv.2512.08195 · pith_short_12: UB4DLNHXP4YB · pith_short_16: UB4DLNHXP4YBM6Q4 · pith_short_8: UB4DLNHX

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/UB4DLNHXP4YBM6Q4AVOTZDE2GP \
  | 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: a07835b4f77f30167a1c055d3c8c9a33e4396b6d5a6b65c195aab69656f7b522

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2793eaa83c9d6db4c5d19a0f1fbfaf117c18de2fec8481153888a12d499ea6fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-12-09T02:56:53Z",
    "title_canon_sha256": "107085c4ab7ded00d894546512cab2c46d643f816785f787fcbf616251939345"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.08195",
    "kind": "arxiv",
    "version": 2
  }
}