Pith Number

pith:EFJXFIW7

pith:1999:EFJXFIW72MOESIOZNBOQVB6O53

not attested not anchored not stored refs pending

The X-Ray Luminosity Function of Active Galactic Nuclei

G. Hasinger, G. Zamorani, J. Truemper, M. Schmidt, R. Giacconi

arxiv:astro-ph/9908295 v1 · 1999-08-26 · 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{EFJXFIW72MOESIOZNBOQVB6O53}

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	2026-07-04T14:17:03.864080Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

215372a2dfd31c4921d9685d0a87ceeef873b7c8eed193aec54b6e7c3a1ff5dd

Aliases

arxiv: astro-ph/9908295 · arxiv_version: astro-ph/9908295v1 · doi: 10.48550/arxiv.astro-ph/9908295 · pith_short_12: EFJXFIW72MOE · pith_short_16: EFJXFIW72MOESIOZ · pith_short_8: EFJXFIW7

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/EFJXFIW72MOESIOZNBOQVB6O53 \
  | 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: 215372a2dfd31c4921d9685d0a87ceeef873b7c8eed193aec54b6e7c3a1ff5dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b2dc5f80027b42cecfcf23a37b0a1dc6e93d480705791805aefb3e583412151",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-08-26T18:47:22Z",
    "title_canon_sha256": "56338ea7f2ab8a24b7960490c44a41be5e3ca7595ee0a31aede76d2f49a3fa53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9908295",
    "kind": "arxiv",
    "version": 1
  }
}