Pith Number

pith:PYKZZU3G

pith:2009:PYKZZU3GOZU2URPNC2Y7ATOUTX

not attested not anchored not stored refs pending

Properties of Disks and Bulges of Spiral and Lenticular Galaxies in the Sloan Digital Sky Survey

M. Fukugita, N. Oohama, N. Yasuda, O. Nakamura, S. Okamura

arxiv:0908.4312 v1 · 2009-08-29 · 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{PYKZZU3GOZU2URPNC2Y7ATOUTX}

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	2026-05-18T02:34:37.140668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e159cd3667669aa45ed16b1f04dd49dd3f71291b31506f88226f66da5f87791

Aliases

arxiv: 0908.4312 · arxiv_version: 0908.4312v1 · doi: 10.48550/arxiv.0908.4312 · pith_short_12: PYKZZU3GOZU2 · pith_short_16: PYKZZU3GOZU2URPN · pith_short_8: PYKZZU3G

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/PYKZZU3GOZU2URPNC2Y7ATOUTX \
  | 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: 7e159cd3667669aa45ed16b1f04dd49dd3f71291b31506f88226f66da5f87791

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7aded10a25aa6ef50cbb5ed232d0400383e629d317a2d6c4e7e75c3c66b62b53",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-29T02:21:07Z",
    "title_canon_sha256": "a28896dff4dc7b5f1e739471152e98afda85b5d510d764d6169e9a679b79e6a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4312",
    "kind": "arxiv",
    "version": 1
  }
}