Pith Number

pith:6WJNPE57

pith:2009:6WJNPE57BC4XQOB2RPDZUWOGRV

not attested not anchored not stored refs pending

Evidence for intermediate-age stellar populations in early-type galaxies from K-band spectroscopy

A.J. Cenarro, A. Vazdekis, D.R. Silva, E. M\'armol-Queralt\'o, H. Kuntschner, J. Gorgas, N. Cardiel, P. S\'anchez-Bl\'azquez, R.F. Peletier, S.C. Trager

arxiv:0909.5385 v1 · 2009-09-29 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6WJNPE57BC4XQOB2RPDZUWOGRV}

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	2026-05-18T02:34:20.803557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f592d793bf08b978383a8bc79a59c68d73e3d0555c0209c3319798240f34eeb3

Aliases

arxiv: 0909.5385 · arxiv_version: 0909.5385v1 · doi: 10.48550/arxiv.0909.5385 · pith_short_12: 6WJNPE57BC4X · pith_short_16: 6WJNPE57BC4XQOB2 · pith_short_8: 6WJNPE57

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/6WJNPE57BC4XQOB2RPDZUWOGRV \
  | 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: f592d793bf08b978383a8bc79a59c68d73e3d0555c0209c3319798240f34eeb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3186b2995847974c7e2b06bd83cc2bf190bfa7c74de030c0bda39db318409fb5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-29T16:45:02Z",
    "title_canon_sha256": "25fb46aec948f7ff77d179fc193c5cebbc9e65ade424ccfc41cd23a211ca754e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.5385",
    "kind": "arxiv",
    "version": 1
  }
}