Pith Number

pith:WHRUQR6D

pith:2006:WHRUQR6DRBUDI7E2ZFTAUPJVTF

not attested not anchored not stored refs pending

The Hard X-ray 20-40 keV AGN Luminosity Function

2), (2) Univ. Maryland Baltimore County, (3) INTEGRAL Science Data Centre), C. R. Shrader (1), N. Gehrels (1), N. Produit (3) ((1) NASA/GSFC, S. Soldi (3), V. Beckmann (1

arxiv:astro-ph/0606687 v1 · 2006-06-28 · 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{WHRUQR6DRBUDI7E2ZFTAUPJVTF}

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	2026-05-18T04:28:58.538216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1e34847c38868347c9ac9660a3d35996a5f8259aaa77958ab06b1da636fdcf8

Aliases

arxiv: astro-ph/0606687 · arxiv_version: astro-ph/0606687v1 · doi: 10.48550/arxiv.astro-ph/0606687 · pith_short_12: WHRUQR6DRBUD · pith_short_16: WHRUQR6DRBUDI7E2 · pith_short_8: WHRUQR6D

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/WHRUQR6DRBUDI7E2ZFTAUPJVTF \
  | 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: b1e34847c38868347c9ac9660a3d35996a5f8259aaa77958ab06b1da636fdcf8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5f90b0d4cf57eb4661d12a9dbfc64334756665de071c52f0ce261fdf945ad63",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-06-28T17:36:09Z",
    "title_canon_sha256": "ca7a610debe08b5ba9cfbb1331bf8e440d5c72adfa409411655c1fbf851dff23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0606687",
    "kind": "arxiv",
    "version": 1
  }
}