Pith Number

pith:NPAFQTP7

pith:2014:NPAFQTP7IZMCTSN2OQ253HQMQ7

not attested not anchored not stored refs pending

The Hard X-Ray Luminosity Function of High-Redshift ($3<z\lesssim 5$) Active Galactic Nuclei

Andrea Comastri, Cristian Vignali, Fabio Vito, Kazushi Iwasawa, Marcella Brusa, Nico Cappelluti, Roberto Gilli

arxiv:1409.6918 v1 · 2014-09-24 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPAFQTP7IZMCTSN2OQ253HQMQ7}

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	2026-05-18T01:41:57.261204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bc0584dff465829c9ba7435dd9e0c87dbe92453eceeacfaff5a0f67be0bc77e

Aliases

arxiv: 1409.6918 · arxiv_version: 1409.6918v1 · doi: 10.48550/arxiv.1409.6918 · pith_short_12: NPAFQTP7IZMC · pith_short_16: NPAFQTP7IZMCTSN2 · pith_short_8: NPAFQTP7

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/NPAFQTP7IZMCTSN2OQ253HQMQ7 \
  | 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: 6bc0584dff465829c9ba7435dd9e0c87dbe92453eceeacfaff5a0f67be0bc77e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4841f85479672e558fb90a0075c2998d902305d1e947fe08a013b5565d1c2d18",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-09-24T12:04:18Z",
    "title_canon_sha256": "6756c404623dc9a8ed1205f85dab4a8e987d9771c5a4733540bd6474bf7e58ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.6918",
    "kind": "arxiv",
    "version": 1
  }
}