Pith Number

pith:VGJR7333

pith:2016:VGJR7333AF6H2IVYEWFQ6SAWTT

not attested not anchored not stored refs pending

A 17-billion-solar-mass black hole in a group galaxy with a diffuse core

Chung-Pei Ma, Jenny E. Greene, Jens Thomas, John P. Blakeslee, Nicholas J. McConnell, Ryan Janish

arxiv:1604.01400 v1 · 2016-04-05 · 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{VGJR7333AF6H2IVYEWFQ6SAWTT}

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	2026-05-18T01:16:13.107722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9931fef7b017c7d22b8258b0f48169cd4338e811447a084dfc6989d7e0ab481

Aliases

arxiv: 1604.01400 · arxiv_version: 1604.01400v1 · doi: 10.48550/arxiv.1604.01400 · pith_short_12: VGJR7333AF6H · pith_short_16: VGJR7333AF6H2IVY · pith_short_8: VGJR7333

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/VGJR7333AF6H2IVYEWFQ6SAWTT \
  | 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: a9931fef7b017c7d22b8258b0f48169cd4338e811447a084dfc6989d7e0ab481

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00c983ae5ec13d59031333adedc9615be9d9d3c0d98a43252e9cad80849e973b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-04-05T20:00:02Z",
    "title_canon_sha256": "1147235cacc8a9e180dc3b38e1246e35a54d538d1901fcd1cde86062de557592"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.01400",
    "kind": "arxiv",
    "version": 1
  }
}