Pith Number

pith:NOIGDX6D

pith:2025:NOIGDX6DWBQCJ5IX36YLLDZLLX

not attested not anchored not stored refs pending

A Comparison of Full Spectral Fitting Codes for Measuring the Stellar Initial Mass Function and Other Stellar Population Properties in Elliptical Galaxies

Alexandra Masegian, Anja Feldmeier-Krause, Ilaria Lonoce, Wendy L. Freedman

arxiv:2508.16525 v1 · 2025-08-22 · 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{NOIGDX6DWBQCJ5IX36YLLDZLLX}

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	2026-07-05T11:57:50.242473Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b9061dfc3b06024f517dfb0b58f2b5de0f0c6d96d7bb1255ab0b26cc23c17df

Aliases

arxiv: 2508.16525 · arxiv_version: 2508.16525v1 · doi: 10.48550/arxiv.2508.16525 · pith_short_12: NOIGDX6DWBQC · pith_short_16: NOIGDX6DWBQCJ5IX · pith_short_8: NOIGDX6D

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/NOIGDX6DWBQCJ5IX36YLLDZLLX \
  | 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: 6b9061dfc3b06024f517dfb0b58f2b5de0f0c6d96d7bb1255ab0b26cc23c17df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7a36a22e41df14ad7ee6d3ea67fa9d417fdd089fa30d76a84c68fbc4add351e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-08-22T16:47:50Z",
    "title_canon_sha256": "79ffa8a16d5a88bdcc68b6d61ae3b3d62b566d0a125edd7974dc4f5f4a7fc234"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.16525",
    "kind": "arxiv",
    "version": 1
  }
}