Pith Number

pith:VAY4THSV

pith:2026:VAY4THSVCWU3JC5GQURJO7YYQX

not attested not anchored not stored refs pending

High-S/N Quasar Observations with HST/COS: Deep Fields for Spectroscopy

Andreea Petric, Andrew J. Fox, Annalisa De Cia, Annelia Anderson, Bart Wakker, Benjamin Oppenheimer, Brad Koplitz, Cameron Hummels, C\'eline P\'eroux, Christopher Churchill, David French, Debopam Som, Doyeon Avery Kim, Farhan Hasan, Frances Cashman, Gisella De Rosa, Glenn Kacprzak, Hsiao-Wen Chen, Jane Charlton, Jason Tumlinson, Jerry Kriss, Jessica Werk, J. Michael Shull, Joseph Burchett, Kate Rowlands, Kathleen Barger, Matilde Mingozzi, Max Pettini, Michelle Berg, Molly Peeples, Nahum Arav, Nicolas Lehner, Nicolas Tejos, Patrick Petitjean, Philipp Richter, Raghunathan Srianand, Ramona Augustin, Ravi Sankrit, Romeel Dav\'e, Rongmon Bordoloi, Ryan Cooke, Sanchayeeta Borthakur, Sapna Mishra, Sean Johnson, Sowgat Muzahid, Svea Hernandez, TalaWanda Monroe, Travis Fischer, Varsha Kulkarni, Vikram Khaire, Yakov Faerman, Zhijie Qu

arxiv:2605.29949 v1 · 2026-05-28 · 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{VAY4THSVCWU3JC5GQURJO7YYQX}

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	2026-05-29T02:06:03.288086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a831c99e5515a9b48ba68522977f1885fb18b33d9eb17239d7d8694e13ea368c

Aliases

arxiv: 2605.29949 · arxiv_version: 2605.29949v1 · doi: 10.48550/arxiv.2605.29949 · pith_short_12: VAY4THSVCWU3 · pith_short_16: VAY4THSVCWU3JC5G · pith_short_8: VAY4THSV

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/VAY4THSVCWU3JC5GQURJO7YYQX \
  | 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: a831c99e5515a9b48ba68522977f1885fb18b33d9eb17239d7d8694e13ea368c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55bd5ec1a8fe1630cc2ae8c0ae92eb741d289642d65a83549aa7e43b12e2aec8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-28T13:57:07Z",
    "title_canon_sha256": "20961d3d04ade40c2d721f5ea538182ed14b5a3fcbce2527e46e8a73bb8f7861"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.29949",
    "kind": "arxiv",
    "version": 1
  }
}