Pith Number

pith:VJEVWWI2

pith:2009:VJEVWWI2VR6VGPLO2ONJOJ5A63

not attested not anchored not stored refs pending

Cardassian Universe Constrained by Latest Observations

Chao-Jun Feng, Xin-zhou Li

arxiv:0912.4793 v1 · 2009-12-24 · astro-ph.CO · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VJEVWWI2VR6VGPLO2ONJOJ5A63}

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	2026-05-18T02:33:55.401564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa495b591aac7d533d6ed39a9727a0f6f53285f99d0c22a5315941fe044f905b

Aliases

arxiv: 0912.4793 · arxiv_version: 0912.4793v1 · doi: 10.48550/arxiv.0912.4793 · pith_short_12: VJEVWWI2VR6V · pith_short_16: VJEVWWI2VR6VGPLO · pith_short_8: VJEVWWI2

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/VJEVWWI2VR6VGPLO2ONJOJ5A63 \
  | 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: aa495b591aac7d533d6ed39a9727a0f6f53285f99d0c22a5315941fe044f905b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "452256244a979accd7e38319388d5a1ac1849cef3744060d2b851c21802156fe",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-24T05:34:24Z",
    "title_canon_sha256": "40f1f2ad00f01cc998e0e40ddfd1ba31ef1d2b891bac85e4b58da41586bb3f9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4793",
    "kind": "arxiv",
    "version": 1
  }
}