Pith Number

pith:VFL2ZM3J

pith:2012:VFL2ZM3JWQPDJFULNZV2HEJ6BU

not attested not anchored not stored refs pending

Optical identification of X-ray source 1RXS J180431.1-273932 as a magnetic cataclysmic variable

A. A. Nucita, N. Masetti, P. Parisi

arxiv:1207.2148 v2 · 2012-07-09 · 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{VFL2ZM3JWQPDJFULNZV2HEJ6BU}

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	2026-05-18T01:56:26.327428Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a957acb369b41e34968b6e6ba3913e0d18f235648c64d092f75b2cb210c1192c

Aliases

arxiv: 1207.2148 · arxiv_version: 1207.2148v2 · doi: 10.48550/arxiv.1207.2148 · pith_short_12: VFL2ZM3JWQPD · pith_short_16: VFL2ZM3JWQPDJFUL · pith_short_8: VFL2ZM3J

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/VFL2ZM3JWQPDJFULNZV2HEJ6BU \
  | 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: a957acb369b41e34968b6e6ba3913e0d18f235648c64d092f75b2cb210c1192c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2857d430c4300bd161963977fa7119d96ceb5a523ec7f5ccfd0bff2266c79a90",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-07-09T20:00:00Z",
    "title_canon_sha256": "cd090b01f445e491e2496fac5d8f5927156a1482e6b76945aa958418cc13757a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2148",
    "kind": "arxiv",
    "version": 2
  }
}