Pith Number

pith:HHWSYI5Y

pith:2004:HHWSYI5YCH2OXWHFSD5X44MWBD

not attested not anchored not stored refs pending

Black hole mass and accretion rate of active galactic nuclei with double-peaked broad emission lines

F.K. Liu (Peking Univ.), Xue-Bing Wu

arxiv:astro-ph/0406415 v1 · 2004-06-18 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HHWSYI5YCH2OXWHFSD5X44MWBD}

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	2026-07-04T16:44:02.520672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39ed2c23b811f4ebd8e590fb7e719608dd2ed0689791cf8908bb748666ff9d91

Aliases

arxiv: astro-ph/0406415 · arxiv_version: astro-ph/0406415v1 · doi: 10.48550/arxiv.astro-ph/0406415 · pith_short_12: HHWSYI5YCH2O · pith_short_16: HHWSYI5YCH2OXWHF · pith_short_8: HHWSYI5Y

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/HHWSYI5YCH2OXWHFSD5X44MWBD \
  | 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: 39ed2c23b811f4ebd8e590fb7e719608dd2ed0689791cf8908bb748666ff9d91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d94c4552a269f5ce0c1031e4f4db40f9eac3225dd8b63f5ba8ddf072d26cd4f1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-06-18T09:53:48Z",
    "title_canon_sha256": "46e81a9677c72c3feaa6fc6ab7bad103078caa9dd2b7d627fdfbd816f6f03af7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0406415",
    "kind": "arxiv",
    "version": 1
  }
}