Pith Number

pith:UYSTWNGF

pith:2009:UYSTWNGFX65YNCLMSC3GTQNSJB

not attested not anchored not stored refs pending

The Evolution of Spheroidal Galaxies in Different Environments

(2) ESO), Alexander Fritz (1), Bodo L. Ziegler (2) ((1) Gemini

arxiv:0909.0107 v1 · 2009-09-01 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UYSTWNGFX65YNCLMSC3GTQNSJB}

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	2026-05-18T02:12:12.291435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6253b34c5bfbb86896c90b669c1b248575a11f20cbafbb9b69946ce740e681c

Aliases

arxiv: 0909.0107 · arxiv_version: 0909.0107v1 · doi: 10.48550/arxiv.0909.0107 · pith_short_12: UYSTWNGFX65Y · pith_short_16: UYSTWNGFX65YNCLM · pith_short_8: UYSTWNGF

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/UYSTWNGFX65YNCLMSC3GTQNSJB \
  | 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: a6253b34c5bfbb86896c90b669c1b248575a11f20cbafbb9b69946ce740e681c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c48d4511ab6c68e015d6ce5bcb70eb9661f52a0fe721c16eb6fc1c717b794a93",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-01T07:14:19Z",
    "title_canon_sha256": "3e83e7ea34756a918cfee3acadae0bbb29e2a008ab6e9dc1b3d4a0e63b0ef5a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0107",
    "kind": "arxiv",
    "version": 1
  }
}