Pith Number

pith:H2Q2IMWC

pith:2009:H2Q2IMWCM3Z4BDYXOXMYA7ASEK

not attested not anchored not stored refs pending

What broad emission lines tell us about how active galactic nuclei work

C. Martin Gaskell

arxiv:0908.0386 v2 · 2009-08-04 · astro-ph.CO · 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{H2Q2IMWCM3Z4BDYXOXMYA7ASEK}

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.

Cited by

1 paper in Pith

Physically motivated AGN emissivity profiles and their effects on quasar microlensing signatures. 1. Multi-epoch accretion disc size inference

Receipt and verification

First computed	2026-05-18T02:12:44.929543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ea1a432c266f3c08f1775d9807c122280afcec18150aae14ae5d2afdc01b272

Aliases

arxiv: 0908.0386 · arxiv_version: 0908.0386v2 · doi: 10.48550/arxiv.0908.0386 · pith_short_12: H2Q2IMWCM3Z4 · pith_short_16: H2Q2IMWCM3Z4BDYX · pith_short_8: H2Q2IMWC

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/H2Q2IMWCM3Z4BDYXOXMYA7ASEK \
  | 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: 3ea1a432c266f3c08f1775d9807c122280afcec18150aae14ae5d2afdc01b272

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b461826ddb6ab2fd9b4114091063f9b808d8cbde049c8407340c4493780ee159",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-04T05:58:34Z",
    "title_canon_sha256": "255c64c41f7aa58ac21ce66aa520d4a5f3014731c4ae3e308e27baf10645b329"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0386",
    "kind": "arxiv",
    "version": 2
  }
}