Pith Number

pith:6A7B3EGF

pith:2014:6A7B3EGFJJOVPU6NJSPFQXB3KQ

not attested not anchored not stored refs pending

A Supermassive Black Hole in an Ultracompact Dwarf Galaxy

(10) U. Heidelberg, (11) U. of Texas), (2) MPIA, (3) ESO-Santiago, (4) U. of Queensland, (5) Michigan State U., 6), (6) ESO-Garching, (7) Smithsonian/Sternberg, (8) AAO/Macquarie U., (9) UC Santa Cruz, Anil Seth (1), Holger Baumgardt (4), Igor Chilingarian (7), Jay Strader (5), Jean Brodie (9), Jonelle L. Walsh (11) ((1) U. of Utah, Lee Spitler (8), Mark den Brok (1), Matthias Frank (10), Michael Hilker (6), Nadine Neumayer (2, Remco van den Bosch (2), Richard McDermid (8), Steffen Mieske (3)

arxiv:1409.4769 v2 · 2014-09-16 · 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{6A7B3EGFJJOVPU6NJSPFQXB3KQ}

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	2026-05-18T01:42:02.004678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f03e1d90c54a5d57d3cd4c9e585c3b541fd0a82a041eb5f5309ef9165b22d752

Aliases

arxiv: 1409.4769 · arxiv_version: 1409.4769v2 · doi: 10.48550/arxiv.1409.4769 · pith_short_12: 6A7B3EGFJJOV · pith_short_16: 6A7B3EGFJJOVPU6N · pith_short_8: 6A7B3EGF

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/6A7B3EGFJJOVPU6NJSPFQXB3KQ \
  | 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: f03e1d90c54a5d57d3cd4c9e585c3b541fd0a82a041eb5f5309ef9165b22d752

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98fd83191b2c0315c10eb16d1b75ae81a67b083031c12e80db5ac9ac54e17848",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-09-16T20:00:11Z",
    "title_canon_sha256": "e1ebfbe9e3f595f4dcfe74636ff2f0a0a5a549703a72174c2d5529c653b9e4fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.4769",
    "kind": "arxiv",
    "version": 2
  }
}