Pith Number

pith:2UJNS6QI

pith:2009:2UJNS6QI4QMKF2ELY34Q4EOPVG

not attested not anchored not stored refs pending

The Norma cluster (ACO3627): II. The near infrared K_s-band luminosity function

(2) University of Cape Town, Cape Town, Germany, Heidelberg, P. A. Woudt (2), R. C. Kraan-Korteweg (2) ((1) Max Planck Institute for Astronomy, R. E. Skelton (1), South Africa)

arxiv:0904.3485 v1 · 2009-04-22 · 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{2UJNS6QI4QMKF2ELY34Q4EOPVG}

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	2026-05-18T02:13:58.047535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d512d97a08e418a2e88bc6f90e11cfa9832e4e94de711229283dbef87684d744

Aliases

arxiv: 0904.3485 · arxiv_version: 0904.3485v1 · doi: 10.48550/arxiv.0904.3485 · pith_short_12: 2UJNS6QI4QMK · pith_short_16: 2UJNS6QI4QMKF2EL · pith_short_8: 2UJNS6QI

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/2UJNS6QI4QMKF2ELY34Q4EOPVG \
  | 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: d512d97a08e418a2e88bc6f90e11cfa9832e4e94de711229283dbef87684d744

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be2827328eab3d52d13d6a6382d6eeae0756469d7c786a4514cdd1a96f25a6e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-22T16:36:44Z",
    "title_canon_sha256": "8fd130f83c1e0e58e629c6718122bb6800d2176254fa64f00c742dd22f71624b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3485",
    "kind": "arxiv",
    "version": 1
  }
}