Pith Number

pith:VG6EPT2E

pith:2010:VG6EPT2ECATZPWOJLWOZAOI6BD

not attested not anchored not stored refs pending

Unusual PAH Emission in Nearby Early-Type Galaxies: A Signature of an Intermediate Age Stellar Population?

A. Bressan, G. L. Granato, L. Buson, L. Silva, M. Clemens, O. Vega, P. Panuzzo, R. Rampazzo, W. W. Zeilinger

arxiv:1008.0009 v1 · 2010-07-30 · 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{VG6EPT2ECATZPWOJLWOZAOI6BD}

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	2026-05-18T02:06:00.744912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9bc47cf44102797d9c95d9d90391e08d1ba29b3b3cef40320d687bafb8e8cea

Aliases

arxiv: 1008.0009 · arxiv_version: 1008.0009v1 · doi: 10.48550/arxiv.1008.0009 · pith_short_12: VG6EPT2ECATZ · pith_short_16: VG6EPT2ECATZPWOJ · pith_short_8: VG6EPT2E

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/VG6EPT2ECATZPWOJLWOZAOI6BD \
  | 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: a9bc47cf44102797d9c95d9d90391e08d1ba29b3b3cef40320d687bafb8e8cea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a814208336b18e9babc0c12c1987d1dec89f20b22d01286513dce2c6ff99568",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-07-30T20:16:58Z",
    "title_canon_sha256": "7e9d6395812e604e9aeaf5b1ba479683c2e2828bad40a83f8c590e13968aafc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.0009",
    "kind": "arxiv",
    "version": 1
  }
}