Pith Number

pith:ZICGMIOW

pith:2022:ZICGMIOWGTJPSGWCJDHPOCUDEC

not attested not anchored not stored refs pending

Probing quasar lifetimes with proximate $21$-centimetre absorption in the diffuse intergalactic medium at redshifts $z\geq 6$

Ewald Puchwein, Girish Kulkarni, James S. Bolton, Laura C. Keating, Margherita Molaro, Martin G. Haehnelt, Nina Hatch, Tom\'a\v{s} \v{S}oltinsk\'y

arxiv:2211.07655 v2 · 2022-11-14 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZICGMIOWGTJPSGWCJDHPOCUDEC}

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	2026-07-05T05:28:31.394921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca046621d634d2f91ac248cef70a832098d8f1f3e02402097d0f4f7136d34536

Aliases

arxiv: 2211.07655 · arxiv_version: 2211.07655v2 · doi: 10.48550/arxiv.2211.07655 · pith_short_12: ZICGMIOWGTJP · pith_short_16: ZICGMIOWGTJPSGWC · pith_short_8: ZICGMIOW

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/ZICGMIOWGTJPSGWCJDHPOCUDEC \
  | 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: ca046621d634d2f91ac248cef70a832098d8f1f3e02402097d0f4f7136d34536

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c40127aa497abba8f4fd62a2c958bfed1670678a523a811a39e812311e0aa023",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2022-11-14T19:00:00Z",
    "title_canon_sha256": "8f56b9f54f8f17c275dc8bbea1fb2f5004ffda0bc64719afef3c14c8c4d8a118"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2211.07655",
    "kind": "arxiv",
    "version": 2
  }
}