Pith Number

pith:MWQBOQYB

pith:2006:MWQBOQYBIDK6G3VKDUPUUF7PFY

not attested not anchored not stored refs pending

Stellar populations in the nuclei of late-type spiral galaxies

Carl-Jakob Walcher (MPIA), Hans-Walter Rix (MPIA), Joern Rossa (STScI), Joseph C.Shields (Ohio U), Luis C. Ho (OCIW), Roeland P. van der Marel (STScI), Stephane Charlot (MPA/IAP), Torsten Boeker (ESTEC)

arxiv:astro-ph/0604138 v1 · 2006-04-06 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MWQBOQYBIDK6G3VKDUPUUF7PFY}

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	2026-05-18T04:36:21.494328Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65a017430140d5e36eaa1d1f4a17ef2e08d2d7d180de527084c89ad23696a5bf

Aliases

arxiv: astro-ph/0604138 · arxiv_version: astro-ph/0604138v1 · doi: 10.48550/arxiv.astro-ph/0604138 · pith_short_12: MWQBOQYBIDK6 · pith_short_16: MWQBOQYBIDK6G3VK · pith_short_8: MWQBOQYB

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/MWQBOQYBIDK6G3VKDUPUUF7PFY \
  | 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: 65a017430140d5e36eaa1d1f4a17ef2e08d2d7d180de527084c89ad23696a5bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "308bbde96a33abd4ada145f0e4256aa55f13158bca16272e3ba04fad229f8296",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-04-06T16:30:28Z",
    "title_canon_sha256": "6ba948dca819508eb59106e04e37e4277ad52f61a79746d4a2891126ef845761"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0604138",
    "kind": "arxiv",
    "version": 1
  }
}