Pith Number

pith:PFIDGIDL

pith:2001:PFIDGIDLPUPEVMFL3A6DA4M3IK

not attested not anchored not stored refs pending

A photometric and spectroscopic study of dwarf and giant galaxies in the Coma cluster -- III. Spectral ages and metallicities

B. Mobasher, B.M. Poggianti, D. Carter, K. Shimasaku, M. Doi, M. Iye, M. Sekiguchi, M. Yagi, N. Kashikawa, N. Yasuda, S. Okamura, T. Bridges, Y. Komiyama

arxiv:astro-ph/0107158 v2 · 2001-07-09 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PFIDGIDLPUPEVMFL3A6DA4M3IK}

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	2026-07-04T16:23:40.806343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

795033206b7d1e4ab0abd83c30719b429ecad8877539f7d03909db641b0354bb

Aliases

arxiv: astro-ph/0107158 · arxiv_version: astro-ph/0107158v2 · doi: 10.48550/arxiv.astro-ph/0107158 · pith_short_12: PFIDGIDLPUPE · pith_short_16: PFIDGIDLPUPEVMFL · pith_short_8: PFIDGIDL

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/PFIDGIDLPUPEVMFL3A6DA4M3IK \
  | 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: 795033206b7d1e4ab0abd83c30719b429ecad8877539f7d03909db641b0354bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32b80b421fddb30b347cfa30ada5040c0492b47e7326e9ce68d7dade6024163f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-09T16:50:11Z",
    "title_canon_sha256": "264be7bc7f1851398d3240eb64f67d06dcb7149d9c4810f523155480cb85ae56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107158",
    "kind": "arxiv",
    "version": 2
  }
}