Pith Number

pith:4PVYC6GD

pith:2019:4PVYC6GDVYVRQQVBVAO5FQNNL6

not attested not anchored not stored refs pending

Supermassive black holes with high accretion rates in active galactic nuclei: X. Optical variability characteristics

Chen Hu, Jian-Min Wang, Jin-Ming Bai, Kai Wang, Kai-Xing Lu, Luis C. Ho, Ming Xiao, Pu Du, Wei-Hao Bian, Yan-Rong Li, Ye-Fei Yuan, Ying-Ke Huang, Zhi-Xiang Zhang

arxiv:1904.03393 v2 · 2019-04-06 · 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{4PVYC6GDVYVRQQVBVAO5FQNNL6}

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	2026-05-17T23:44:54.594730Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3eb8178c3ae2b1842a1a81dd2c1ad5fb604609c5e3f3a8ed45102a76e162703

Aliases

arxiv: 1904.03393 · arxiv_version: 1904.03393v2 · doi: 10.48550/arxiv.1904.03393 · pith_short_12: 4PVYC6GDVYVR · pith_short_16: 4PVYC6GDVYVRQQVB · pith_short_8: 4PVYC6GD

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/4PVYC6GDVYVRQQVBVAO5FQNNL6 \
  | 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: e3eb8178c3ae2b1842a1a81dd2c1ad5fb604609c5e3f3a8ed45102a76e162703

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbb02d63ece2ada64c5b06abafc43c5d68294283856884b9ba477e3943bc8d0e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-04-06T09:21:05Z",
    "title_canon_sha256": "b8e1b393474982436796955913f0e967ac2e33eaf5b63061a933c2fb8b2bdc3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.03393",
    "kind": "arxiv",
    "version": 2
  }
}