Pith Number

pith:KQALLVDT

pith:2018:KQALLVDTCINPTH7GDAJ4JA2ESM

not attested not anchored not stored refs pending

X-ray Luminosity Function of Quasars at 3<z<5 from XMM-Newton Serendipitous Survey Data

G. A. Khorunzhev (1), R. A. Burenin (1) (Space Research Institute Russian Academy of Sciences), S. Yu. Sazonov (1)

arxiv:1808.01773 v2 · 2018-08-06 · astro-ph.HE · 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{KQALLVDTCINPTH7GDAJ4JA2ESM}

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	2026-05-17T23:42:53.801390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5400b5d473121af99fe61813c48344933c4c65819fe4433b7507b47554740a1e

Aliases

arxiv: 1808.01773 · arxiv_version: 1808.01773v2 · doi: 10.48550/arxiv.1808.01773 · pith_short_12: KQALLVDTCINP · pith_short_16: KQALLVDTCINPTH7G · pith_short_8: KQALLVDT

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/KQALLVDTCINPTH7GDAJ4JA2ESM \
  | 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: 5400b5d473121af99fe61813c48344933c4c65819fe4433b7507b47554740a1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54f4f09693388b4ae7534d9d3d37337fc8dc6c11b289a6d97efffb01fabe940a",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-08-06T08:37:18Z",
    "title_canon_sha256": "00de657476daac8b191eb08827bc8d59c49993686cb1de5dd7ec10a4b0899396"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.01773",
    "kind": "arxiv",
    "version": 2
  }
}