Pith Number

pith:QPEVP45E

pith:2010:QPEVP45ELB4DHJYFUVFBQ5HMMG

not attested not anchored not stored refs pending

The stellar populations of early-type galaxies -- I. Observations, line-strengths and stellar population parameters

Craig Harrison, Harald Kuntschner, Matthew Colless, Michael Pracy, Roberto De Propris, Warrick Couch

arxiv:1006.4870 v1 · 2010-06-24 · 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{QPEVP45ELB4DHJYFUVFBQ5HMMG}

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	2026-05-18T02:06:42.620166Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83c957f3a4587833a705a54a1874ec619f42741ddf16520d2955f01b0c2c9073

Aliases

arxiv: 1006.4870 · arxiv_version: 1006.4870v1 · doi: 10.48550/arxiv.1006.4870 · pith_short_12: QPEVP45ELB4D · pith_short_16: QPEVP45ELB4DHJYF · pith_short_8: QPEVP45E

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/QPEVP45ELB4DHJYFUVFBQ5HMMG \
  | 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: 83c957f3a4587833a705a54a1874ec619f42741ddf16520d2955f01b0c2c9073

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6547d911d073a95fda22200e426500babb0a528b97f388794df1649aad468e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-06-24T20:17:07Z",
    "title_canon_sha256": "e16d0e5f95f4c46df02a156d80a06a1ed38154265c7e3459282003d2472730d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.4870",
    "kind": "arxiv",
    "version": 1
  }
}