Pith Number

pith:ZN5IDJXU

pith:2008:ZN5IDJXUM3SYDNSAVCPKUYALX4

not attested not anchored not stored refs pending

Astrophysical Tests of Lorentz and CPT Violation with Photons

Alan Kostelecky, Matthew Mewes

arxiv:0809.2846 v2 · 2008-09-17 · astro-ph · gr-qc · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZN5IDJXUM3SYDNSAVCPKUYALX4}

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	2026-05-18T04:36:40.923058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb7a81a6f466e581b640a89eaa600bbf17582262959cd88a24d7a96e438eb7c0

Aliases

arxiv: 0809.2846 · arxiv_version: 0809.2846v2 · doi: 10.48550/arxiv.0809.2846 · pith_short_12: ZN5IDJXUM3SY · pith_short_16: ZN5IDJXUM3SYDNSA · pith_short_8: ZN5IDJXU

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/ZN5IDJXUM3SYDNSAVCPKUYALX4 \
  | 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: cb7a81a6f466e581b640a89eaa600bbf17582262959cd88a24d7a96e438eb7c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c96cb6740f20b598c3310c551040df75d78ac88f01a2351589c0fe5e25587426",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-17T15:47:18Z",
    "title_canon_sha256": "fb4bd8e22a6d9da120e9076301e9797c92dc893ac0bcf01525802f04278530b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2846",
    "kind": "arxiv",
    "version": 2
  }
}