Pith Number

pith:WWWBZIT2

pith:2009:WWWBZIT2QOWWQ2VM7T5UK6F5VO

not attested not anchored not stored refs pending

Origin and Evolution of the Abundance Gradient along the Milky Way Disk

2), Beijing, China), China; (2) Graduate School, Cosmology, J. Fu (1, J.L. Hou (1), J. Yin (1, R.X. Chang (1)((1) Key Laboratory for Research in Galaxies, Shanghai Astronomical Observatory, The Chinese Academy of Sciences

arxiv:0902.1014 v1 · 2009-02-06 · astro-ph.GA · 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{WWWBZIT2QOWWQ2VM7T5UK6F5VO}

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	2026-05-18T04:29:16.784933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5ac1ca27a83ad686aacfcfb4578bdab9a6984b816bcbfb97baef48d96d7cbb9

Aliases

arxiv: 0902.1014 · arxiv_version: 0902.1014v1 · doi: 10.48550/arxiv.0902.1014 · pith_short_12: WWWBZIT2QOWW · pith_short_16: WWWBZIT2QOWWQ2VM · pith_short_8: WWWBZIT2

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/WWWBZIT2QOWWQ2VM7T5UK6F5VO \
  | 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: b5ac1ca27a83ad686aacfcfb4578bdab9a6984b816bcbfb97baef48d96d7cbb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "039be85d6e773a74ed5fce84bc1a3c70af47d48f92bff788f1d0b9147b6f90ee",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-02-06T05:47:40Z",
    "title_canon_sha256": "0d91e8f3b98a9e9673c451b12fd6484f8b8d949330cee281bd85b09fdd3a670c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1014",
    "kind": "arxiv",
    "version": 1
  }
}