Pith Number

pith:5TU2CUDS

pith:2019:5TU2CUDSV3XZYFLJM34YS7VAGT

not attested not anchored not stored refs pending

Revealing the Origin and Cosmic Evolution of Supermassive Black Holes

A. W. S. Man, B. R. McNamara, C. Willott, D. Haggard, G. Sivakoff, I. H. Stairs, J. Hlavacek-Larrondo, J. Ruan, L. Ferrarese, L. Gallo, P. B. Hall, R. M. Alexandroff, S. C. Gallagher, S. L. Ellison, S. McGee, T. E. Woods, V. C. Khatu

arxiv:1910.06346 v1 · 2019-10-14 · astro-ph.GA · astro-ph.CO · 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{5TU2CUDSV3XZYFLJM34YS7VAGT}

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	2026-07-05T01:04:04.349435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ece9a15072aeef9c156966f9897ea034fc6157b484717366a8f0ed974acd9789

Aliases

arxiv: 1910.06346 · arxiv_version: 1910.06346v1 · doi: 10.48550/arxiv.1910.06346 · pith_short_12: 5TU2CUDSV3XZ · pith_short_16: 5TU2CUDSV3XZYFLJ · pith_short_8: 5TU2CUDS

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/5TU2CUDSV3XZYFLJM34YS7VAGT \
  | 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: ece9a15072aeef9c156966f9897ea034fc6157b484717366a8f0ed974acd9789

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c6dd9686314b8fb201ecbfeedab5ecce32dd8799f5541a42890419a70c63b8d",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-10-14T18:00:12Z",
    "title_canon_sha256": "356dfe81b97948472884628d656b2cfd55c1136a1aa86e5e95b91dbe5b908248"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.06346",
    "kind": "arxiv",
    "version": 1
  }
}