Pith Number

pith:SIMQ6UJM

pith:2026:SIMQ6UJMAWVCQ6AVSOALSCQVYO

not attested not anchored not stored refs pending

Cepheid metallicities from low-resolution near-infrared spectra: validation against the optical reference scale

(2) Institute for Astronomy, 3), Austria, Germany), Institut f\"ur Astro- und Teilchenphysik, M. A. Urbaneja (1), N. Przybilla (1) ((1) Universit\"at Innsbruck, R. P. Kudritzki (2, Universit\"atssternwarte, University of Hawaii at Manoa, USA (3) LMU M\"unchen

arxiv:2608.04767 v1 · 2026-08-05 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SIMQ6UJMAWVCQ6AVSOALSCQVYO}

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	2026-08-06T01:47:04.159618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92190f512c05aa2878159380b90a15c3b6715e6f213f5c4b647161964a75665f

Aliases

arxiv: 2608.04767 · arxiv_version: 2608.04767v1 · doi: 10.48550/arxiv.2608.04767 · pith_short_12: SIMQ6UJMAWVC · pith_short_16: SIMQ6UJMAWVCQ6AV · pith_short_8: SIMQ6UJM

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/SIMQ6UJMAWVCQ6AVSOALSCQVYO \
  | 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: 92190f512c05aa2878159380b90a15c3b6715e6f213f5c4b647161964a75665f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90ad9a48cc68e9c83d4bf8bfdec5935079cd9f5125d590e85609743f02748b1a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-08-05T12:33:08Z",
    "title_canon_sha256": "0ca23df0359c1ae523c677b628d5e4ceb9a14050c6ef899e52e23eeaca259a23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.04767",
    "kind": "arxiv",
    "version": 1
  }
}