Pith Number

pith:BQVLBJHU

pith:2013:BQVLBJHUZPEELUG7TGYDKWLL5K

not attested not anchored not stored refs pending

Astrophysics of Super-massive Black Hole Mergers

Jeremy D. Schnittman (GSFC)

arxiv:1307.3542 v1 · 2013-07-12 · gr-qc · 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{BQVLBJHUZPEELUG7TGYDKWLL5K}

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	2026-05-18T01:48:50.868475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c2ab0a4f4cbc845d0df99b035596beab02b9fb489e3f08aa5e73d2730c82dfb

Aliases

arxiv: 1307.3542 · arxiv_version: 1307.3542v1 · doi: 10.48550/arxiv.1307.3542 · pith_short_12: BQVLBJHUZPEE · pith_short_16: BQVLBJHUZPEELUG7 · pith_short_8: BQVLBJHU

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/BQVLBJHUZPEELUG7TGYDKWLL5K \
  | 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: 0c2ab0a4f4cbc845d0df99b035596beab02b9fb489e3f08aa5e73d2730c82dfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63aa4030cf8bd4765398d147798f97ba5b241c6fd134119eef1e4035f7391ff1",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-07-12T19:06:27Z",
    "title_canon_sha256": "6469045acb774e0ddd35d11d5fee4cf6051f5ce80cb813392a06ed4ac83fc6e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.3542",
    "kind": "arxiv",
    "version": 1
  }
}