Pith Number

pith:W6AC3GTN

pith:2019:W6AC3GTNNSK42GYFJCX6G3DQSO

not attested not anchored not stored refs pending

Reverberation mapping of narrow-line Seyfert 1 galaxy I Zwicky 1: black hole mass

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

arxiv:1904.06146 v1 · 2019-04-12 · 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{W6AC3GTNNSK42GYFJCX6G3DQSO}

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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.

Cited by

1 paper in Pith

Strong X-ray Variability of I Zwicky 1: Obscuration from Clumpy Accretion-Disk Winds

Receipt and verification

First computed	2026-05-17T23:46:11.766877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7802d9a6d6c95cd1b0548afe36c70938738de19a8372b44d81c613bd0cb9354

Aliases

arxiv: 1904.06146 · arxiv_version: 1904.06146v1 · doi: 10.48550/arxiv.1904.06146 · pith_short_12: W6AC3GTNNSK4 · pith_short_16: W6AC3GTNNSK42GYF · pith_short_8: W6AC3GTN

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/W6AC3GTNNSK42GYFJCX6G3DQSO \
  | 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: b7802d9a6d6c95cd1b0548afe36c70938738de19a8372b44d81c613bd0cb9354

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a59a21c8c26952dbfc7149f780903430bd8c92d0b4902127cd5f954d079b4923",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-04-12T10:31:48Z",
    "title_canon_sha256": "43ee7fb586e0c06633e714ddecc587a706201260fcd0a03d98a01398fee513a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.06146",
    "kind": "arxiv",
    "version": 1
  }
}