Pith Number

pith:YOJAF2AO

pith:2022:YOJAF2AOGVJMXJFVB2FKPD32GV

not attested not anchored not stored refs pending

Optical spectroscopic observations of intermediate-mass black holes and their host galaxies: the $M_{BH}-\sigma_*$ relation

Igor Chilingaryan, Ivan Katkov, Ivan Kuzmin, Kirill Grishin, Mariia Demianenko, Victoria Toptun, Vladimir Goradzhanov

arxiv:2201.01078 v1 · 2022-01-04 · astro-ph.GA · 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{YOJAF2AOGVJMXJFVB2FKPD32GV}

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	2026-07-05T05:01:17.879469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c39202e80e3552cba4b50e8aa78f7a355331e82029ba79ac0c82b3c444963b2f

Aliases

arxiv: 2201.01078 · arxiv_version: 2201.01078v1 · doi: 10.48550/arxiv.2201.01078 · pith_short_12: YOJAF2AOGVJM · pith_short_16: YOJAF2AOGVJMXJFV · pith_short_8: YOJAF2AO

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/YOJAF2AOGVJMXJFVB2FKPD32GV \
  | 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: c39202e80e3552cba4b50e8aa78f7a355331e82029ba79ac0c82b3c444963b2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37e467b0fd3a735b601f8651c673474241f362f72cd9959e5451cbc5ac2a34da",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2022-01-04T10:49:27Z",
    "title_canon_sha256": "685e28360807ad6774c331469fe13b2e34d30b2cc2248f14bc150b31e71647f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.01078",
    "kind": "arxiv",
    "version": 1
  }
}