Pith Number

pith:WQCU6FQM

pith:2012:WQCU6FQME3URCBRV5DAE6GWPAL

not attested not anchored not stored refs pending

Secular evolution in action: central values and radial trends in the stellar populations of boxy bulges

(2) Oxford, (3) ESO), Harald Kuntschner (3) ((1) MPE, Martin Bureau (2), Michael J. Williams (1)

arxiv:1209.3167 v1 · 2012-09-14 · 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{WQCU6FQME3URCBRV5DAE6GWPAL}

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	2026-05-18T01:54:29.092223Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4054f160c26e9110635e8c04f1acf02fd7e2099f1f45b94849207ff95b20eb0

Aliases

arxiv: 1209.3167 · arxiv_version: 1209.3167v1 · doi: 10.48550/arxiv.1209.3167 · pith_short_12: WQCU6FQME3UR · pith_short_16: WQCU6FQME3URCBRV · pith_short_8: WQCU6FQM

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/WQCU6FQME3URCBRV5DAE6GWPAL \
  | 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: b4054f160c26e9110635e8c04f1acf02fd7e2099f1f45b94849207ff95b20eb0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6d5e874a473b982e052cedf4d0c47a3c9ac503280724fe895071ca9ab123bae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-14T12:24:10Z",
    "title_canon_sha256": "fec67cb23a33727b2d7b207e39e3a53f1bfb4508ae944b4aa3ce1d539ffad00f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.3167",
    "kind": "arxiv",
    "version": 1
  }
}