Pith Number

pith:WXMNNXGY

pith:2021:WXMNNXGYEEL257CGO3E7WY5GHP

not attested not anchored not stored refs pending

The space density of ultra-luminous QSOs at the end of reionization epoch by the QUBRICS Survey and the AGN contribution to the hydrogen ionizing background

A. Grazian, E. Giallongo, F. Fontanot, F. Guarneri, G. Calderone, G. Cupani, K. Boutsia, S. Cristiani, Y. Ozdalkiran

arxiv:2110.13736 v1 · 2021-10-26 · 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{WXMNNXGYEEL257CGO3E7WY5GHP}

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	2026-07-05T03:49:23.150432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5d8d6dcd82117aefc4676c9fb63a63be07a144ce8816f1e614747d503412853

Aliases

arxiv: 2110.13736 · arxiv_version: 2110.13736v1 · doi: 10.48550/arxiv.2110.13736 · pith_short_12: WXMNNXGYEEL2 · pith_short_16: WXMNNXGYEEL257CG · pith_short_8: WXMNNXGY

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/WXMNNXGYEEL257CGO3E7WY5GHP \
  | 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: b5d8d6dcd82117aefc4676c9fb63a63be07a144ce8816f1e614747d503412853

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba26b8a3fd28ef50f28a2aa8bea323f40bb9bef4c209119a7a51c4913053af58",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-10-26T14:29:48Z",
    "title_canon_sha256": "91fa8bd763ef3bf1870bd144ad4b2cebafd640947e51308592ce7ccb51194368"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.13736",
    "kind": "arxiv",
    "version": 1
  }
}