Pith Number

pith:ZN3YTRRN

pith:2025:ZN3YTRRNLQILQ6ACSXSB7AL66M

not attested not anchored not stored refs pending

Using Lyman Alpha Absorption to Measure the Intensity and Variability of $z \sim 2.4$ Ultraviolet Background Light

Caryl Gronwall, Daniel Farrow, Donald P. Schneider, Dustin Davis, Eric Gawiser, Erin Mentuch Cooper, Gary J. Hill, Karl Gebhardt, Laurel H. Weiss, Mahan Mirza Khanlari, Mahdi Qezlou, Maja Lujan Niemeyer, Robin Ciardullo, Simon Gazagnes

arxiv:2504.13253 v1 · 2025-04-17 · 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{ZN3YTRRNLQILQ6ACSXSB7AL66M}

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	2026-07-05T10:50:52.079069Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb7789c62d5c10b8780295e41f817ef31fd2efa57741a311c4e3ca1c062fadcb

Aliases

arxiv: 2504.13253 · arxiv_version: 2504.13253v1 · doi: 10.48550/arxiv.2504.13253 · pith_short_12: ZN3YTRRNLQIL · pith_short_16: ZN3YTRRNLQILQ6AC · pith_short_8: ZN3YTRRN

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/ZN3YTRRNLQILQ6ACSXSB7AL66M \
  | 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: cb7789c62d5c10b8780295e41f817ef31fd2efa57741a311c4e3ca1c062fadcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fa68a6265890a4f4ea36df1ddc7b698b7bef6d1d189715252c9e1ec989da271",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-04-17T18:00:03Z",
    "title_canon_sha256": "958c5b9002ddc4e0c97a784189bd2ed0307dc821458f5dd089bc075998165929"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.13253",
    "kind": "arxiv",
    "version": 1
  }
}