Pith Number

pith:W2UCJLID

pith:2009:W2UCJLIDVBGZHRT3Z5BDOOA52X

not attested not anchored not stored refs pending

Is the universe rotating?

M.-C. Chu, Shi-Chun Su

arxiv:0902.4575 v3 · 2009-02-26 · 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{W2UCJLIDVBGZHRT3Z5BDOOA52X}

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	2026-05-18T02:14:38.632934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6a824ad03a84d93c67bcf4237381dd5e44c6adb6cb595f776f435f425ec6596

Aliases

arxiv: 0902.4575 · arxiv_version: 0902.4575v3 · doi: 10.48550/arxiv.0902.4575 · pith_short_12: W2UCJLIDVBGZ · pith_short_16: W2UCJLIDVBGZHRT3 · pith_short_8: W2UCJLID

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/W2UCJLIDVBGZHRT3Z5BDOOA52X \
  | 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: b6a824ad03a84d93c67bcf4237381dd5e44c6adb6cb595f776f435f425ec6596

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1e9ba80daf34a6e1d192a2f99743ca2db6991ddc722e9e5e01b5c627905c8a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-02-26T12:54:49Z",
    "title_canon_sha256": "e8c8524e3e422b864cdde8414ce47b82a46d402b01a8d5721c81acfd9326ab9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4575",
    "kind": "arxiv",
    "version": 3
  }
}