Pith Number

pith:W2KDCQNR

pith:2013:W2KDCQNRWIJI3UQPBXHPQBXLSW

not attested not anchored not stored refs pending

XMM-Newton observations of 1A 0535+262 in quiescence

Andrea Santangelo, Isabel Caballero, Richard Rothschild, Rozaliya Doroshenko, Sergej Tsygankov, Victor Doroshenko

arxiv:1311.7553 v1 · 2013-11-29 · 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{W2KDCQNRWIJI3UQPBXHPQBXLSW}

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	2026-05-18T03:05:55.895887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6943141b1b2128dd20f0dcef806eb95b1a79234b0031e1a13aa1916d1d7fa94

Aliases

arxiv: 1311.7553 · arxiv_version: 1311.7553v1 · doi: 10.48550/arxiv.1311.7553 · pith_short_12: W2KDCQNRWIJI · pith_short_16: W2KDCQNRWIJI3UQP · pith_short_8: W2KDCQNR

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/W2KDCQNRWIJI3UQPBXHPQBXLSW \
  | 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: b6943141b1b2128dd20f0dcef806eb95b1a79234b0031e1a13aa1916d1d7fa94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65bbe8e039c626aa23310a25efd71021aa7fb0682e28d9ddc7a2058172aa8088",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-11-29T13:16:51Z",
    "title_canon_sha256": "5f724ae563933421ca22d1fe7950fdca6a3ca7bbe0010b2725a06194848aa987"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.7553",
    "kind": "arxiv",
    "version": 1
  }
}