Pith Number

pith:32PGNPLK

pith:2011:32PGNPLKXQJYBRNQKS4H4FM43I

not attested not anchored not stored refs pending

The Optical Counterpart of NGC 1313 X-1

Hua Feng (Tsinghua), Lin Yang (Tsinghua), Philip Kaaret (Iowa)

arxiv:1103.5281 v1 · 2011-03-28 · 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{32PGNPLKXQJYBRNQKS4H4FM43I}

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	2026-05-18T02:02:44.482832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de9e66bd6abc1380c5b054b87e159cda00b9544b8df36ca36c86b01820ee2c72

Aliases

arxiv: 1103.5281 · arxiv_version: 1103.5281v1 · doi: 10.48550/arxiv.1103.5281 · pith_short_12: 32PGNPLKXQJY · pith_short_16: 32PGNPLKXQJYBRNQ · pith_short_8: 32PGNPLK

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/32PGNPLKXQJYBRNQKS4H4FM43I \
  | 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: de9e66bd6abc1380c5b054b87e159cda00b9544b8df36ca36c86b01820ee2c72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee7cdc199ad7c5b504faaede8533403818e7a7fe9280fee9238230edc3d536cd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-03-28T05:42:12Z",
    "title_canon_sha256": "bdc90393be7b532351c53ed0dec4fc1b6a76917e830b1a9828a5064624b82030"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.5281",
    "kind": "arxiv",
    "version": 1
  }
}