Pith Number

pith:OS5QRHAT

pith:2012:OS5QRHAT232FX4XRMPM3PSLO2S

not attested not anchored not stored refs pending

A Stellar Dynamical Mass Measurement of the Black Hole in NGC 3998 from Keck Adaptive Optics Observations

2), (2) University of California, (3) Max-Planck Institut f\"ur Astronomie, (4) University of Hertfordshire), Aaron J. Barth (2), Irvine, Jonelle L. Walsh (1, Marc Sarzi (4) ((1) The University of Texas at Austin, Remco C.E. van den Bosch (3)

arxiv:1205.0816 v1 · 2012-05-03 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OS5QRHAT232FX4XRMPM3PSLO2S}

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	2026-05-18T01:57:38.242826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74bb089c13d6f45bf2f163d9b7c96ed4abbfb370146f36c966e158a46825647f

Aliases

arxiv: 1205.0816 · arxiv_version: 1205.0816v1 · doi: 10.48550/arxiv.1205.0816 · pith_short_12: OS5QRHAT232F · pith_short_16: OS5QRHAT232FX4XR · pith_short_8: OS5QRHAT

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/OS5QRHAT232FX4XRMPM3PSLO2S \
  | 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: 74bb089c13d6f45bf2f163d9b7c96ed4abbfb370146f36c966e158a46825647f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b37eab05307c61500e982d75690d34cc8983a7822c2c095ae24f1e29b6b9643a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-05-03T20:12:03Z",
    "title_canon_sha256": "987445e8abee1776cbec82d1bb4c04f9dd158e2b7185b04ee55064eed759c73a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.0816",
    "kind": "arxiv",
    "version": 1
  }
}