Pith Number

pith:WL5LOFKY

pith:2013:WL5LOFKYIEFYEC43JXKWSLPNBZ

not attested not anchored not stored refs pending

Further Evidence for a Supermassive Black Hole Mass - Pitch Angle Relation

2, (2) Instituto de Astrofisica de Canarias, 3), (3) Universidad de La Laguna, (4) University of Arkansas, (5) Georgia State University), Benjamin L. Davis (1), Claud H. S. Lacy (1) ((1) University of Arkansas, Daniel Kennefick (1), Doug Shields (1), Fayetteville, Joel C. Berrier (1, Julia D. Kennefick (1), Little Rock, Marc S. Seigar (4), Matthew Hartley (1), Misty C. Bentz (5), R. Scott Barrows (1)

arxiv:1304.4937 v2 · 2013-04-17 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WL5LOFKYIEFYEC43JXKWSLPNBZ}

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	2026-05-18T03:18:51.257714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2fab71558410b820b9b4dd5692ded0e634ff8b41be01c8f7dd68deddf3cc3b5

Aliases

arxiv: 1304.4937 · arxiv_version: 1304.4937v2 · doi: 10.48550/arxiv.1304.4937 · pith_short_12: WL5LOFKYIEFY · pith_short_16: WL5LOFKYIEFYEC43 · pith_short_8: WL5LOFKY

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/WL5LOFKYIEFYEC43JXKWSLPNBZ \
  | 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: b2fab71558410b820b9b4dd5692ded0e634ff8b41be01c8f7dd68deddf3cc3b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc4ea985fc40be202f5a64edc05bc2ff29b440c330d312533cc454fe40c8ed9a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-04-17T20:00:03Z",
    "title_canon_sha256": "e6924aebef6db26b2d5cc8fe23e7442a8fb58cf897b97bd827aa239b6b0cd6f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4937",
    "kind": "arxiv",
    "version": 2
  }
}