Pith Number

pith:5URWDQQJ

pith:2009:5URWDQQJGGJN5A6GHRALFQP3V3

not attested not anchored not stored refs pending

The stellar population content of the thick disk and halo of the Milky Way analogue NGC 891

Marina Rejkuba, Mustapha Mouhcine, Rodrigo Ibata

arxiv:0903.4211 v1 · 2009-03-24 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5URWDQQJGGJN5A6GHRALFQP3V3}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:14:26.116983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed2361c2093192de83c63c40b2c1fbaec77e0f2ea1923e2f51be35294c11849e

Aliases

arxiv: 0903.4211 · arxiv_version: 0903.4211v1 · doi: 10.48550/arxiv.0903.4211 · pith_short_12: 5URWDQQJGGJN · pith_short_16: 5URWDQQJGGJN5A6G · pith_short_8: 5URWDQQJ

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/5URWDQQJGGJN5A6GHRALFQP3V3 \
  | 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: ed2361c2093192de83c63c40b2c1fbaec77e0f2ea1923e2f51be35294c11849e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "848a5269ada06dd00e233a85ce8f7fb0586ab25b11e1a940fdca43e5c550fe69",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-24T22:25:44Z",
    "title_canon_sha256": "503770d50ddd8486910ee3c6465e3fe2df88b8b5574cea5235ed91dc0fdfd72e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4211",
    "kind": "arxiv",
    "version": 1
  }
}