Pith Number

pith:VIXXWH3M

pith:2013:VIXXWH3MXZTXAIFGQ6SSGYCBFU

not attested not anchored not stored refs pending

RX J0440.9+4431: a persistent Be/X-ray binary in outburst

C. Ferrigno, D. Klochkov, E. Bozzo, K. Pottschmidt, P. Kretschmar, R. Farinelli

arxiv:1303.7087 v1 · 2013-03-28 · 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{VIXXWH3MXZTXAIFGQ6SSGYCBFU}

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	2026-05-18T01:50:51.602727Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa2f7b1f6cbe677020a687a52360412d3b8bf0d96042950e29a029826c6c7859

Aliases

arxiv: 1303.7087 · arxiv_version: 1303.7087v1 · doi: 10.48550/arxiv.1303.7087 · pith_short_12: VIXXWH3MXZTX · pith_short_16: VIXXWH3MXZTXAIFG · pith_short_8: VIXXWH3M

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/VIXXWH3MXZTXAIFGQ6SSGYCBFU \
  | 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: aa2f7b1f6cbe677020a687a52360412d3b8bf0d96042950e29a029826c6c7859

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db4231e78d5414fd9a0f9fc7fed2f8750dda663f05498cbeaf71494147c1b814",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-03-28T10:49:57Z",
    "title_canon_sha256": "ebfaae479e8315f85b7f317278ab578baaab2a95b6543d4239b124cc6e60ced4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.7087",
    "kind": "arxiv",
    "version": 1
  }
}