Pith Number

pith:HBFJ54HB

pith:2011:HBFJ54HBD37EDP3TVSYZUSGK2D

not attested not anchored not stored refs pending

Stellar population gradients in Fornax Cluster S0 galaxies: connecting bulge and disk evolution

2), (2) University of Nottingham, A. Arag\'on-Salamanca (2), A.G. Bedregal (1, M.R. Merrifield (2) ((1) Universidad Complutense de Madrid, N. Cardiel (1), Spain, U.K.)

arxiv:1103.4378 v1 · 2011-03-22 · 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{HBFJ54HBD37EDP3TVSYZUSGK2D}

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	2026-05-18T00:36:33.802087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

384a9ef0e11efe41bf73acb19a48cad0fed42db23a2d95733593ecf5f1ae0504

Aliases

arxiv: 1103.4378 · arxiv_version: 1103.4378v1 · doi: 10.48550/arxiv.1103.4378 · pith_short_12: HBFJ54HBD37E · pith_short_16: HBFJ54HBD37EDP3T · pith_short_8: HBFJ54HB

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/HBFJ54HBD37EDP3TVSYZUSGK2D \
  | 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: 384a9ef0e11efe41bf73acb19a48cad0fed42db23a2d95733593ecf5f1ae0504

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3740dd398cfd1e62f4a15c16d311991f9c8cff65b31bba24709af06330f802f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-22T20:48:10Z",
    "title_canon_sha256": "bd21217af94cbdc216bfaf28f12f47967dabf62eb1846f4347f92fd902099ee0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.4378",
    "kind": "arxiv",
    "version": 1
  }
}