Pith Number

pith:KZV3DFXA

pith:2020:KZV3DFXAEKHKDFYT7VZ6FVEWHK

not attested not anchored not stored refs pending

From galactic nuclei to the halo outskirts: tracing supermassive black holes across cosmic history and environments

Alberto Sesana, Daniele Spinoso, David Izquierdo-Villalba, Massimo Dotti, Silvia Bonoli, Yetli Rosas-Guevara

arxiv:2001.10548 v2 · 2020-01-28 · 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{KZV3DFXAEKHKDFYT7VZ6FVEWHK}

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	2026-07-05T01:07:39.627849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

566bb196e0228ea19713fd73e2d4963a8e616b90c3ff1bbc66504dd6121dd44b

Aliases

arxiv: 2001.10548 · arxiv_version: 2001.10548v2 · doi: 10.48550/arxiv.2001.10548 · pith_short_12: KZV3DFXAEKHK · pith_short_16: KZV3DFXAEKHKDFYT · pith_short_8: KZV3DFXA

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/KZV3DFXAEKHKDFYT7VZ6FVEWHK \
  | 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: 566bb196e0228ea19713fd73e2d4963a8e616b90c3ff1bbc66504dd6121dd44b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5c3d299acd15bcec0e1b454d953c73a41e9d291df5ce6be382dbc3632e31676",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-01-28T19:00:03Z",
    "title_canon_sha256": "f7cfdf364de9adc9626552f20a3245647ee70d6feb1c253f11a51a5d26fb5542"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.10548",
    "kind": "arxiv",
    "version": 2
  }
}