Pith Number

pith:LPA4FGLM

pith:2013:LPA4FGLMRDFF5XBLCFSUS337TE

not attested not anchored not stored refs pending

Discovery of a 6.4 h black hole binary in NGC 4490

G. L. Israel, L. Sidoli, L. Zampieri, M. Mapelli, P. Esposito, S. E. Motta

arxiv:1309.6328 v2 · 2013-09-24 · 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{LPA4FGLMRDFF5XBLCFSUS337TE}

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	2026-05-18T03:05:47.479841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5bc1c2996c88ca5edc2b1165496f7f991bdc333408aa94f3bca5af7605c4229b

Aliases

arxiv: 1309.6328 · arxiv_version: 1309.6328v2 · doi: 10.48550/arxiv.1309.6328 · pith_short_12: LPA4FGLMRDFF · pith_short_16: LPA4FGLMRDFF5XBL · pith_short_8: LPA4FGLM

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/LPA4FGLMRDFF5XBLCFSUS337TE \
  | 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: 5bc1c2996c88ca5edc2b1165496f7f991bdc333408aa94f3bca5af7605c4229b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b6d2a99dc6e07d8f3a7c259034e5bf13f4f6475b9f409d23121c3d6ea7928c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-09-24T20:01:52Z",
    "title_canon_sha256": "bef37871dda4995f8a55e04f8d407d8eeb1b111d729b8d1b4f2994375744d01f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.6328",
    "kind": "arxiv",
    "version": 2
  }
}